The Italian brand name Nova Florida is one of the world's best manufacturers of heating equipment. 1992 was a significant year for the company - the period of joining the ranks of the most famous concern in Italy, the Fondital Group. Since then, a huge range of high-quality, practical and aesthetic technology has delighted European consumers. Aluminum radiators, gas boilers, convectors, stand-alone boilers, thermoblocks and burners in the Russian Federation are sold by Vesta Trading.

Serial production of ergonomic and durable equipment is ensured by a streamlined high-tech production cycle with automatic quality control.

The trademark of the Italian craftsmen is the self-diagnosis function built into the security system. Wall-mounted gas double-circuit boilers are equipped with a secondary flow-through heat exchanger, and their design uses the patented Aqua Premium System hot water technology. Combining plate heat exchanger with a storage boiler allows you to increase the volume of water consumption, while reducing the dimensions of the heating structure itself.

The exquisite design of Nova Florida wall-mounted gas boilers is supported by a high degree of reliability and durability of operation. Their design includes all the necessary components of the boiler room: an expansion tank, a circulation pump, a safety valve, as well as a security system and many useful service functions. Boilers are produced with closed and open combustion chambers, and therefore are able to operate on any gas: liquefied or natural.

Another innovation of Italian manufacturers is the Vela Compact series of gas boilers - the smallest heating elements of all on the territory of Russia. The extremely compact dimensions (700 × 400 × 250 mm), coupled with the modern design of the control panel, will ideally fit into the interior of a small kitchen or other household premises. The five-pipe bithermal heat exchanger has a high efficiency, and multi-colored light indicators allow you to effectively diagnose the operation of the boiler. The Vela Compact series is available in two versions: CTFS (23.7 kW) with forced draft and sealed combustion chamber and CTN (22.2 kW) with natural draft and open combustion chamber.

The high production potential of Nova Florida allows it to be in the center of world innovation, to carry out its own developments and find the best, and sometimes, unique solutions, one of a kind, and therefore extremely demanded.

Review of the gas wall-mounted boiler Nova Florida Vela Compact

Two-circuit gas wall-mounted boiler Nova Florida Vela Compact with a sealed combustion chamber, forced smoke removal and stopped circulation is designed for heating and hot water supply for private and country houses.

Specifications

Figure: one - Hydraulic circuit CTFS models

1. DHW temperature sensor, 2. Modulating gas valve, 3. Heating circuit temperature sensor, 4. Burner nozzles, 5. Burner, 6. Ignition / flame detection electrode, 7. Safety thermostat, 8. Thermal heat exchanger, 9. Sealed combustion chamber, 10. Exhaust fan, 11. Flue gas pressure control point, 12. Air supply / flue gas pressure difference safety switch, 13. Air supply / flue gas coaxial pipe, 14. Combustion air pressure control point, 15. Air release valve, 16. Filter at the inlet of cold sanitary water, 17. Expansion tank, 18. Circulation pump, 19. Make-up valve, 20. Minimum pressure switch in
heating circuit, 21. Safety valve 3 bar, 22. DHW flow limiter - 10 liters per minute, 23. Sanitary water flow sensor, M - Heating system supply, C - DHW outlet, G - Gas inlet, F - Sanitary cold inlet water, R - Return from the heating system

The double-circuit gas wall-mounted boiler Nova Florida Vela Compact is equipped with a built-in atmospheric gas burner and is available in the following versions:

CTN 24 AF: open combustion chamber, natural exhaust of combustion products, electronic ignition, flow-through bithermal heat exchanger for hot water supply;

CTFS 24 AF: closed combustion chamber, forced discharge of combustion products, electronic ignition, flow-through bithermal heat exchanger for hot water supply.

Both models are equipped with an ionisation flame monitor.

Performance characteristics of boilers Nova Florida Vela Compact

Rated heat input (Qn) kW - 25.5 / 24.5

Rated useful thermal power (Pn) kW - 23.7 / 22.2

Reduced power consumption (Qr) kW - 12.5 / 12

Reduced net power (Pr) kW - 11.2 / 10.8

Efficiency at 100% load% - 93 / 90.6

Efficiency at 30% load% - 90.2 / 90

Heating temperature control limits C - 35 - 78

Maximum temperature of the heating circuit C - 78 + 5

Maximum / minimum system pressure (PMS) bar - 3 - 0.5

Nominal heat output in DHW mode (Qns) kW - 23.7 / 22.2

Reduced heat output in DHW mode (Qrs) kW - 12.5 / 12

DHW capacity (D) at t 30K l / min - 11.4 / 10.8

Maximum / minimum pressure in the DHW circuit bar - 8 - 0.5

DHW temperature control range C - 35-50

Maximum DHW temperature C - 58

Height mm - 700

Width mm - 400

Depth mm - 250

Weight kg - 27.5 / 24.85

Gas connection - G1 / 2

Heating connection - G3 / 4

DHW connection - G1 / 2

NOx emission class - 3/2

Power supply voltage V - 230

Mains frequency Hz - 50

Electric power consumption W - 140/80

Electrical protection class - IPX4D

Constructional characteristics of the boiler Nova Florida Vela Compact

Copper bithermal heat exchanger with high efficiency.

Heating circuit circulation pump with built-in air vent.

Expansion tank with a capacity of 6 liters.

Minimum pressure switch in the heating circuit.

Flow sensor for DHW priority.

DHW flow limiter at 10 l / min.

Make-up cock and drain cock.

Heating and DHW temperature sensors.

Safety thermostat limit value temperature.

Control panel with IPX4D electrical protection class.

Built-in electronic board for safety and flame modulation.

Electronic ignition and ionization control of the presence of a flame.

Flue gas differential pressure switch (CTFS).

Flue gas thermostat (CTN).

Double shut-off modulating gas valve.

User control panel

Combined operating mode switch and heating circuit temperature regulator (control range 35/78 ° C).

Combined release switch and DHW temperature controller (control range 35/58 ° C).

Heating circuit pressure gauge.

Status light indication:

Voltage presence;

Heating demand;

Flame presence;

Burner blocking;

Gas valve malfunction;

Burner blocking due to overtemperature;

Burner shutdown due to flue gas differential pressure switch (CTFS);

Burner shutdown due to flue gas thermostat (CTN) actuation;

Insufficient coolant pressure in the heating circuit;

Damage to temperature sensors.

Operating (operational) characteristics of the boilers Nova Florida Vela Compact

DHW function priority.

Electronic flame modulation in heating mode with a pre-calculated flame rise rate.

Electronic flame modulation in DHW mode.

Boiler anti-freeze function (On 5 ° C, Off: 30 ° C or after 15 minutes of operation).

Ignition Flame Spread Function (CTFS).

Time interval between burner starts (24 24 0 seconds at flow temperature\u003e 40 ° C).

Pump post-circulation function in heating and anti-freezing modes (30 seconds).

DHW pump post-circulation function (6 seconds in winter mode, 1 second in summer mode).

Post-ventilation function in DHW mode and only when the unit is in summer mode (10 seconds - CTFS).

Ventilation safety function after boiler shutdown due to faulty temperature sensors (1 minute - CTFS).

Anti-blocking function of the circulation pump (30 seconds of pump operation after every 24 hours of machine inactivity).

Malfunctions of the Nova Florida Vela Compact double-circuit gas wall-mounted boiler and method of elimination

1) The boiler is locked out and the LED lights up red

a) The burner does not turn on

No gas - Check the gas pressure and the condition of the gas shut-off and safety valves.

Gas valve disconnected - Connect it.

Defective gas valve - Replace it.

b) The burner does not turn on: no spark

The control board does not ignite: it is defective - Replace the board.

c) The burner turns on for a few seconds and turns off

The control board does not detect the presence of a flame: phase and neutral are reversed - Check the correct connection of the phase and neutral.

Ignition / flame detection wire disconnected / damaged - Connect or replace wire.

Ignition / flame detection electrode defective - Replace electrode.

The control board does not detect a flame: it is defective - Replace the board.

The ignition pressure is too low - Increase it.

The minimum heat output is set incorrectly - Check the burner settings.

2) The Nova Florida Vela Compact boiler is blocked and the LED lights up yellow

a) Fan pressure switch (CTFS) does not work

Pressure switch defective - Check relay: replace if defective.

Silicone tubing disconnected or damaged - Connect or replace silicone tubing.

There is insufficient air flow or flue gas evacuation for combustion - Check the air supply and flue gas pipes: clean them or replace if necessary.

Fan defective - Replace it.

Control board defective - Replace it.

b) Flue gas thermostat tripped (CTN)

Incorrect operation of the air supply / flue gas venting system - Check the flue, ventilation ducts and grilles.

Flue gas thermostat defective - Replace it.

The exit from this state is performed by turning the knob to the “Unlock” position.

3) The boiler is locked and the LED is red

a) Safety thermostat tripped

There is no circulation in the heating system: system pipes are clogged, thermostatic valves or radiator taps are closed - Check the condition of the heating system.

Circulation pump blocked or defective - Check pump.

The boiler automatically returns to working condition after 10 seconds. or by turning the dial to the “Unlock” position.

4) LED flashes red

a) The temperature in the heating circuit has exceeded 85 ° C

- Insufficient circulation in the heating system - Check the circulation pump and the condition of the heating system.

The boiler automatically returns to operating condition after the causes of blockage have been eliminated.

5) LED flashes yellow

a) Insufficient pressure in the heating system

Leaks in the heating system - Check the condition of the heating system.

Pressure switch disconnected - Connect pressure switch.

Pressure switch defective - Replace it.

The boiler automatically returns to operating condition after the causes of blockage have been eliminated.

6) LED flashes yellow and red

Heating circuit temperature sensor disconnected - Connect it.

Heating circuit temperature sensor defective - Replace it.

The Nova Florida Vela Compact boiler automatically returns to working condition after the causes of blockage have been eliminated.

7) LED flashes green and red

a) The heating circuit temperature sensor does not work

DHW temperature sensor disconnected - Connect it.

DHW temperature sensor defective - Replace it.

The unit automatically returns to operating condition after the causes of blockage have been eliminated.

8) The DHW circuit of the boiler is not working

a) The flow sensor does not work

Insufficient pressure or flow in the DHW circuit - Check the DHW system and flow sensor filter.

Flow sensor defective or disconnected - Replace or reconnect it.

Flow sensor relay stuck - Replace it.

LED flashes green

a) Gas valve modulator does not work

Loose or missing connection between control board and gas valve - Check the gas valve connections.

Gas valve modulator coil defective - Replace the gas valve modulator coil.

The unit automatically returns to operating condition after the causes of the blockage have been eliminated.

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The gas wall-hung boiler Nova Florida Vela CTFS 24 AF cannot start. If we press the on / off button, the burner functions. If you release the button, the unit dies out. Explain the cause of the problem? The thermoelectric converter or gas valve may be faulty. A decrease in gas pressure on the inlet pipeline may also occur. Sometimes there is a lack of voltage on the control board. There was a problem recently. The inclusion is very poor. The pilot burner ignites, but there is no flame on the main gas burner equipment. Can anyone please explain what is the reason? Most likely a malfunction of the ignition mechanism. You need to service the boiler and clean the ignition device. Because of what the Nova Florida Vela Compact double-circuit boiler does not stop working after the required temperature is established? It heats up to 85C, then it crashes. During the restart operation, everything is repeated. Presumably, the electronic board is not in order, the temperature sensor is broken, the overheating protection button has a problem. It cannot be ruled out that an error occurred in the automatic adjustments. Please tell me why it is not possible to raise the temperature of the coolant over 70 C? We need to increase the temperature, and the screen shows that this is the maximum. How do I adjust the heating? If the device cannot raise the temperature in the heating circuit, the following reasons are possible. In the specified settings, a limit is set on the highest heating temperature not higher than 70C. There is a decrease in the draft velocity in the chimney. The wall-mounted Nova Florida Delfis boiler is unstable in the mode of heating the DHW system. Hot and cold water can alternate from the tap. Tell me what is the reason? The sources of damage can be as follows. Cold water can mix in due to a damaged 3-way valve. The heat exchanger is clogged with dirt. It needs to be cleaned. Water leaks regularly from the tap at the bottom of the boiler. The unit itself cannot be started. What do you need to do? Apparently, there is a coolant discharge through the protection valve. This factor indicates an increase in pressure in the system. Also, the system filling valve may not be closed or it may be necessary to pump the expander tank. I would like to know what kind of malfunction occurs when the pressure increases continuously and the water discharge valve starts to work? The display shows the heating symbol every time the unit heats up. What could be? There is a damage to the heating circuit temperature sensor. The heat carrier does not circulate well in the heating system. Why did the Nova Florida gas boiler periodically turn off? For example, the other day the piezo ignition did not function at all. The maintenance of the device was done two weeks ago. What's the matter? We can assume that functional disorders have appeared in the chimney device. You must complete the chimney check. Inoperability of the piezo igniter will mean the breakdown of its component in the event of a voltage drop or water has flowed into it. Please help me figure out the chimney? Soon the second day, as there is a return thrust, while the smoke began to fall directly into the room. The chimney was made by myself. It is a steel pipe. There may be omissions somewhere. The device performs well DHW heating, and when heating starts, the water immediately comes to a boil, and the unit goes into an accident. What could be faulty, and what is the way to fix it? Probably, the circulation pump is faulty, the control board is damaged, the temperature sensor is broken. Debris can also clog the filter screen. In the DHW cycle, the unit alternately starts to produce cold and hot water. I just can't understand why this is happening. How to set up water heating yourself? There seems to be dirt in the heating system or the heat exchanger needs to be cleaned. It is also possible that the pressure control relay is broken or the circulation pump is faulty. The main reason may be a faulty chimney design. There may be soot contamination that drastically decreases its performance. In addition, it is imperative to check the hood in the room. The wall-mounted boiler Nova Florida CTN 24 was put into operation. The unit immediately raises the temperature above 96 degrees, but then stops working with overheating. Later, when it cools down, it starts to start on its own. What does it depend on? The suspension of overheating operation indicates a circulation problem in the system. First of all, it is recommended to control the position of the valves on the radiators. They must be left open. Next, an inspection is carried out for clogging of the filter, and it is also recommended to make sure that the heat exchanger does not contain scale. Completed the installation of this model in March. Presumably five months later, the device suddenly became very noisy. Please tell me what is the reason for the noise? There may be scale in the heat exchanger. When the water is hard, limescale deposits will later be deposited in the radiator pipes. Would like to country house connect the gas boiler Nova Florida Vela Compact. Could you tell me how to correctly put this device into operation? For proper start-up of this equipment, you need to do certain actions. Switch on the power supply to the device. We open the gas tap. Then we start the gas burner equipment. Then adjust the desired temperature. We need to perform maintenance. Instruct how to properly drain the water from the unit? According to the instructions, this work is performed as follows. Disconnect the unit from the power supply. We close the gas valve. We open the automatic air vent. Open the drain valve completely. Then clean up any spilled liquid. If necessary, you can drain the water through the drain valve. This component is placed at the bottom of the boiler. Please tell us how to diagnose the operation of a 3-way valve? I think that he is not fully completing the opening. In the heating mode, it does not pump the extreme radiators, however, in the DHW mode, the pipe heats up for the flow of heating water under the boiler unit. Of course, the 3-way valve should be inspected for poor stem travel in the intermediate state. We also recommend checking your heating system. We use the floor-standing boiler Nova Florida Altair in the house. Until that day, he worked without question. Now, after five seconds after switching on, it began to go out. It seems that it cannot pump liquid into the system. Tell me what is the problem? A possible factor for this malfunction may be the ignition electrode, which does not detect the flame, or a lack of circulation. Recently there was a problem with this unit. While working, he began to whistle. I tried to restart - it succeeded, but no changes happened. Tell me what is the reason for the whistle? In many cases, a sharp whistle occurs when the pressure on the burner nozzles is incorrectly set. The set value must be checked and corrected if appropriate. The boiler was recently filled with water and the unit began to operate with delays. For example, we set up any temperature, but the heating mode occurs only up to 26 degrees, and then the device turns off. Explain what happened? If the electronic board unit was flooded with water, it can be assumed that it is defective. It must be rebooted using the direct disconnection of the device from the mains. Then re-run and test its functionality. I have a Nova Florida Vela Compact 24 boiler installed. Now, at the start, the wick ignites for 9 seconds, but the main burner does not catch the fire, because of which the device begins to fade. How can I fix the breakdown? Based on your words, the ignition unit is out of order or there is a problem with the burner. Just in case, you need to see if the phasing is correct when connected to the electrical network. I performed the installation of the same model myself at the beginning of August. After about three months, the hot water supply stopped working, although the heating circuit is functioning as expected. I tried to turn on hot water, but the device only displays the temperature, and does not even think about heating. Tell me what is the reason? Most likely, the 3-way valve is faulty. It is required to change it. Explain why the boiler is equipped with a safety temperature sensor? A temperature sensor stops the flow of gas to the burner in case of overheating of the water in the primary system. I need to flush and clean the main water heat exchanger. Tell me how to properly remove this component? This element can be freely removed from the device using a conventional screwdriver. Here is the dismantling process. Drain the water from the device using the drain cock. Then it is required to empty the hot water supply system. Unscrew the screws securing the main heat exchanger and remove it from the frame. We connected the unit of just such a model. After about a few months, the water pressure in it dropped. Often he throws it off and stops. That is, it does not hold pressure at all. What is the reason? If the machine does not increase the water pressure, it can be assumed that there is a leak from the make-up valve. When the shutdown occurs and the pressure drops to zero, the 3-way valve is damaged. Tell me how to clean the cold water filter? First, it is necessary to free the hot water supply system from water. Second, unscrew the flow sensor nut. Then we dismantle the sensor together with the filter from the socket. After removal, we clean from debris and dirt. The unit had a humming sound before starting, but now the noise has increased. Initially, the sound quickly disappeared, but now it is heard longer. occurred for a short time, did you encounter this problem? The appearance of an extraneous rumble can be explained by the presence of limescale inside the body of the heat exchanger, the heating of which proceeds unevenly due to the different thickness of the walls. The more the heat exchanger is clogged, the stronger the rumble, and, accordingly, the heat transfer decreases. The appliance is functioning, but there is clearly no water circulating in the system. Return pump very hot. What could have happened? Most likely, the mud filter is clogged or the tap is closed somewhere, which blocks the movement of the coolant. The circulation pump could still have broken. Why can't the mountains heat up. water? The tap water is barely warm. Help me understand what happened? Troubleshooting can be done in several ways. For example, there is a malfunction of the DHW temperature sensor, it needs to be replaced. Perhaps the power adjustments for DHW heating are out of order. Periodically, we notice a break in the spark during ignition. The burner is clean, the chimney is in order, the draft is good. Where can I find the problem?

The device does not register a spark due to poor notification from the combustion control unit. It is necessary to inspect the wire from the ionization sensor to the electrode. You probably need to tighten it up. A defect in the sensor insulation may be present and must be replaced.

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Heating system control. Installation. Connection. Transfer to another type of gas. Adjustment devices and protection devices.

Features. Installation and assembly. Automation components.

Technical specifications. Installation. Adjustment and check. Maintenance.

Regulation and protection. Installation and assembly. Pressure setting. Maintenance.

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After starting a malfunction appeared. He does not want to turn on, he worked for two years, now the entire panel is on fire as if the boiler is turned on, when the self-diagnosis mode is on, then it clicks, turns off for miles and then turns on the entire panel again. It turned on once, but it gives an error E10 water pressure, although the pressure in the system is 1.5 atm. Tell me what could be?

We installed and connected a Baxi Fourtech 24 F boiler. What cold water pressure is allowed at the inlet to the DHW unit?

Bosch boiler 6000 24 kw, single-circuit with built-in three-way valve... Does not see the boiler sensor, gives an error. Tell me how to make sure that it does not give an error and work normally both for heating and for a boiler?

If you disable the DHW flow sensor, can it be possible to reprogram it into a single-circuit device through the L3 menu?

Installed the Arderia esr 2.13 ffcd boiler. If my coolant pressure drops a little in 2-3 days for a couple of divisions, can there be a reason for a three-way valve malfunction (there are no leaks from the radiators)?

The gas boiler Arderia 2.35 is in operation. Tell me about the power reduction. I heard something about modulation, fan speed and so on. Is it possible to really reduce the power?

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We installed and connected a Buderus Logano G234-WS-44 kW boiler, Logomatic 4211 automatic equipment. Heating on cylinders without hot water supply, nozzles for reduced gas were also replaced. We survived the winter, the cylinders were replaced, all without problems. Then in the spring, when the temperature outside is + 16 + 18, the boiler began to turn off for a long time and, when turned on, began to display a burner error on the screen and a red button lamp on the front wall lit up. We pressed the button, turned on the power again and everything worked. It happened several times, then for the summer they turned off the boiler completely, what could be the malfunction?

In a single-circuit Buderus 072, is the BKN coil circuit heated by the same heat exchanger as for heating or the same as on the 2-circuit one that is on the DHW?

Tell me, for Vaillant wall-mounted gas boilers, are there real / actual differences for the better in the new generation turboTEC plus VU / 5-5 compared to / 3-5?

Malfunction in the operation of the boiler, the green LED (power supply) is flashing, the instructions say that the thermal protection has worked, the green indicator flashes, even if nothing is connected to the board. How to fix? I checked all SMD resistors and transistors, everything is in order.

Gas boiler double-circuit Daewoo Gasboiler with electronic panel... When the DHW is turned on, the heating is heated, the operating mode is summer. I took off the three-way valve, there is no dirt and production. It seems that the board does not control the three-way valve. How to check?

Installed and connected wall-mounted boiler Electrolux Basic Xi. A malfunction began that the boiler stopped seeing the flame and turned off the gas supply after 7-8 seconds. And after 3 attempts, it gave an E1 error. How can you fix it?

Malfunction of the Koreastar boiler. Heating works fine, hot water is intermittent, when the hot water tap is turned on, cold water comes first, then boiling water. After a few seconds, cool, then boiling water again. What could be the problem?

Malfunction of the ferroli domiproject 24 boiler - I adjust 60-70 degrees, it goes to minimum combustion, does not turn on, does not turn off. Restarting is unstable. No pattern is revealed. What to do?

In operation, the gas boiler Junkers euroline, when hot water is turned on, ignites the gas, then goes out and so on several times. If you turn it on while the heating is running, then the water heating turns on immediately. Can you please tell me what could be the problem?

Tell me about the adjustments of the gas boiler Navien Ace 16 turbo remote control v1.3. Cannot set the fan run-down. I bet 30 seconds, but still 2 minutes. twists.

Malfunction of the boiler Oasis ZRT18. The unit starts up, the gas is ignited, then it goes out. Again it lights up and goes out (three times it happens). Then it flares up and works fine. It does not give any error. What is the reason?

Malfunction of the gas boiler Senor Duval - the water pressure sensor shows 0.0, the indicator flashes red, hot water is not heated, but the water pressure in the apartment is good. How can I fix the problem?

Where should the condensate drain be installed in the coaxial flue? The wh2d boiler with a closed combustion chamber is located 1m from the wall.

The problem of starting the Westen Pulsar D boiler. Piezo ignition works, but there is no flame, after a crackling error E01. Rearranged the fork in places.

The Novella floor-standing gas boiler has blocked - the green lights on the panel are on, and nothing else happens. How to fix?

An Ariston gas wall-mounted boiler was installed and connected, which does not hold pressure at all: during the cooling of heated water, the pressure drops to zero, although water is regularly drawn. What's with the pressure?

Malfunction of the metropolis dgt 25 bf boiler. The hot water supply stopped working, the heating is working, it does not give an error. What do you advise?

Please tell me how to solve the problem. The Solly Standard boiler, with any attempt to turn it on or hot water, gives a GS error.

The Wolf boiler is in operation. IN recent times he began to behave strangely: in the pause between starts, he turns on the burner for one second five times, and 70 degrees pops up on the display. Where to look for a malfunction?

ACV Wester Line works very unstable: it often goes into an accident, at startup it emits a characteristic knock and stalls, and at times everything is fine. The unit is almost new, what's wrong with it?

Gas boiler Demrad stopped supplying gas to the burner. The piezo element clicks, but there is no ignition. Everything is in order with the gas stove, there is gas. What is the reason?

Kiturami world boiler malfunction, stops periodically. I wipe the flame sensor and the apparatus works well for a while, but soon everything repeats itself. He also began to smoke heavily. Maybe it's a short chimney, and you need to lengthen it?

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Errors of boilers Nike Star, Eolo Star / Mini, Mythos. Boiler malfunctions with the possibility of automatic unlocking.

My boiler in winter mode systematically raises the temperature to 80 degrees. He summoned the master three times. He said that this is for many imergaz models, and offered to install a programmer, but not the fact that it would help. Tell me how to solve this problem and will this programmer help?

Model 11.6; 17.4; 23.2; 29.3 kW. Specifications. Control elements of the automation unit. Installation and maintenance. Malfunctions and their elimination.

The gas boiler AOGV was installed and put into operation. Hot water dispensing problem. The heat exchanger has been flushed. Less than a month has passed, and again the water does not flow. We put the filter on the water, but time passed, and again hot water does not flow. What could be the breakdown?

Assembly and installation. Start-up and adjustment. Malfunctions and ways to eliminate them.

Technical specifications. Installation and connections. Startup and work order. Automation adjustments.

Malfunction of the boiler Neva lux 7023. With a frequency of 2 times a month, it gives an error E7. But after reboot it still works. Now it gives error E6. It will work for 15 minutes, and then it turns off. What could it be?

Construction and automation unit. Firing up procedure. Malfunctions and repairs.

Tell me if the Atem Zhitomir boiler goes out due to the weak gas pressure, it clicks and goes out. What is the problem? Is it possible to turn off the automation for a while and how?

Gas boiler Lemax KSG-12.5 Premium was installed. After turning off the main burner, a click occurs after a couple of minutes, what is the reason, tell me?

A gas boiler KS-G was installed and connected, for 250 sq. m. When firing up, it does not turn off, the temperature rises, if I am not mistaken, the automatic Arbat 1. The flame is not regulated - too large. What to do?

I installed the Mayak gas boiler and connected it. It works fine. But the reason is this. When he works on a unit, he beeps strongly, if the regulator is turned 2-7, the squeak disappears. Tell me what could be?

We installed and connected a Danko gas boiler with Kare automatics, it works fine on the igniter, but it is worth adding the power on the burner, it completely dies out, yesterday it faded out for 5 minutes, today it works for 20 minutes and completely goes out. Who faced this problem?

The boiler gazeko 18 is in operation. When hot water is turned on, the pressure in the system drops after make-up, the pressure reaches 3 bar. Have to dump. What's the matter, how to fix it?

Water often boils in the boiler, while it goes into an overheating accident. The heat exchanger was recently washed, the system is not clogged. What's the matter?

Malfunction of the Rinnai 167 RMF boiler. Recently started showing error 14. How can you fix the breakage?

The Celtic ds boiler heats up to 45 degrees and costs the whole day it does not turn off and does not heat up the batteries, sometimes it shows an a3 error. How can this problem be resolved?

The hot water pressure in the Mora Top boiler has dropped. What is the reason?

Seoul wall mounted gas boiler stopped turning on due to no ignition error. How can it be eliminated? What exactly is out of order?

domdz.ru

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Review of the gas wall-mounted boiler Nova Florida Vela Compact

Two-circuit gas wall-mounted boiler Nova Florida Vela Compact with a sealed combustion chamber, forced smoke removal and stopped circulation is designed for heating and hot water supply for private and country houses.

Specifications

Figure: 1 - Hydraulic diagram model CTFS

1. DHW temperature sensor, 2. Modulating gas valve, 3. Heating circuit temperature sensor, 4. Burner nozzles, 5. Burner, 6. Ignition / flame detection electrode, 7. Safety thermostat, 8. Thermal heat exchanger, 9. Sealed combustion chamber, 10. Exhaust fan, 11. Flue gas pressure control point, 12. Air supply / flue gas pressure difference safety switch, 13. Air supply / flue gas coaxial pipe, 14. Combustion air pressure control point, 15. Air release valve, 16. Filter at the inlet of cold sanitary water, 17. Expansion tank, 18. Circulation pump, 19. Make-up tap, 20. Minimum pressure switch in the heating circuit, 21. Safety valve 3 bar, 22. DHW flow limiter - 10 liters per minute , 23. Sanitary water flow sensor, M - Heating system supply, C - DHW outlet, G - Gas supply, F - Cold sanitary water inlet, R - Heating system return

The double-circuit gas wall-mounted boiler Nova Florida Vela Compact is equipped with a built-in atmospheric gas burner and is available in the following versions:

CTN 24 AF: open combustion chamber, natural exhaust of combustion products, electronic ignition, flow-through bithermal heat exchanger for hot water supply; - CTFS 24 AF: closed combustion chamber, forced discharge of combustion products, electronic ignition, flow-through bithermal heat exchanger for hot water supply. Both models are equipped with an ionisation flame monitor.

Performance characteristics of boilers Nova Florida Vela Compact

Rated power input (Qn) kW - 25.5 / 24.5 Rated useful heat input (Pn) kW - 23.7 / 22.2 Reduced power input (Qr) kW - 12.5 / 12 Reduced effective power (Pr) kW - 11.2 / 10.8 Efficiency at 100% load% - 93 / 90.6 Efficiency at 30% load% - 90.2 / 90 Heating temperature control range C - 35 - 78 Maximum heating circuit temperature C - 78 + 5 Maximum / minimum system pressure (PMS) bar - 3 - 0 , 5 Nominal heat output in DHW mode (Qns) kW - 23.7 / 22.2 Reduced heat output in DHW mode (Qrs) kW - 12.5 / 12 DHW output (D) at t 30K l / min - 11.4 / 10.8 Maximum / minimum pressure in DHW circuit bar - 8 - 0.5 DHW temperature control range C - 35-50 Maximum DHW temperature C - 58 Height mm - 700 Width mm - 400 Depth mm - 250 Weight kg - 27.5 / 24.85 Gas connection - G1 / 2 Heating connection - G3 / 4 DHW connection - G1 / 2 NOx emission class - 3/2 Voltage power supply V - 230 Power supply frequency Hz - 50 Power consumption W - 140/80 Electrical protection class - IPX4D

Constructional characteristics of the boiler Nova Florida Vela Compact

Copper bithermal heat exchanger with high efficiency. - Heating circuit circulation pump with built-in air vent. - Expansion tank with a capacity of 6 liters. - Minimum pressure switch in the heating circuit. - Flow sensor for DHW priority. - DHW flow limiter at 10 l / min. - Make-up tap and drain tap. - Temperature sensors for the heating circuit and DHW. - Safety thermostat for temperature limit value. - Control panel with IPX4D electrical protection class. - Built-in electronic board for safety and flame modulation. - Electronic ignition and ionization control of the presence of a flame. - Differential pressure switch for combustion products (CTFS). - Flue gas thermostat (CTN). - Modulating gas valve with double shut-off.

User control panel

Combined operating mode switch and heating circuit temperature regulator (control range 35/78 ° C). Combined release switch and DHW temperature controller (control range 35/58 ° C). Heating circuit pressure gauge.

Status light indication:

Voltage presence; - heating demand; - presence of a flame; - burner blocking; - malfunction of the gas valve; - burner blocking due to overtemperature; - blocking of the burner due to the actuation of the differential pressure of the combustion products (CTFS); - burner blocking due to actuation of the flue gas thermostat (CTN); - insufficient pressure of the heating agent in the heating circuit; - damage to temperature sensors.

Operating (operational) characteristics of the boilers Nova Florida Vela Compact

Priority of the DHW function. - Electronic modulation of the flame in heating mode with a pre-calculated flame rise rate. - Electronic flame modulation in DHW mode. - Boiler anti-freeze function (On 5 ° C, Off: 30 ° C or after 15 minutes of operation). - Flame spread function during ignition (CTFS). - Time interval between burner starts (24 24 0 seconds at a flow temperature\u003e 40 ° C). - Pump post-circulation function in heating and anti-freezing modes (30 seconds). - Function of post-circulation of the pump in the DHW circuit (6 seconds in winter mode, 1 second in summer mode). - Post-ventilation function in DHW mode and only when the unit is in summer mode (10 seconds - CTFS). - Protective ventilation function after boiler shutdown due to faulty temperature sensors (1 minute - CTFS). - Anti-blocking function of the circulation pump (30 seconds of pump operation after every 24 hours of machine inactivity).

Nova Florida Vela Compact double-circuit gas wall-mounted boiler malfunctions and elimination method

1) The boiler is locked out and the LED lights up red

a) The burner does not turn on

No gas - Check the gas pressure and the condition of the gas shut-off and safety valves. - The gas valve is disconnected - Connect it. - Gas valve defective - Replace it. - Control board defective - Replace it.

b) The burner does not turn on: no spark

Ignition / flame detection electrode defective - Replace electrode. - The control board does not ignite: it is defective - Replace the board.

c) The burner turns on for a few seconds and turns off

The control board does not detect the presence of a flame: phase and neutral are reversed - Check the correct connection of the phase and neutral. - Ignition / flame detection wire disconnected / damaged - Connect or replace wire. - Ignition / flame detection electrode defective - Replace electrode. - The control board does not detect the presence of a flame: it is defective - Replace the board. - The ignition pressure is too low - Increase it. - The minimum heating output is set incorrectly - Check the burner settings. The exit from this state is performed by turning the knob to the “Unlock” position.

2) The Nova Florida Vela Compact boiler is blocked and the LED lights up yellow

a) Fan pressure switch (CTFS) does not work

Pressure switch defective - Check relay: replace if defective. - Silicone tubes disconnected or damaged - Connect or replace silicone tubes. - There is insufficient air flow or flue gas evacuation for combustion - Check the air supply and flue gas pipes: clean them or replace if necessary. - Fan defective - Replace it. - Control board defective - Replace it.

b) Flue gas thermostat tripped (CTN)

Incorrect operation of the air supply / flue gas venting system - Check the flue, ventilation ducts and grilles. - Flue gas thermostat defective - Replace it. The exit from this state is performed by turning the knob to the “Unlock” position.

3) The boiler is blocked and the LED is red

a) Safety thermostat tripped

There is no circulation in the heating system: the system pipes are clogged, the thermostatic valves or radiator taps are closed - Check the condition of the heating system. - The circulation pump is blocked or defective - Check the pump. The boiler automatically returns to working condition after 10 seconds. or by turning the knob to the “Unlock” position.

4) LED flashes red

a) The temperature in the heating circuit has exceeded 85 ° C

Insufficient circulation in the heating system - Check the circulation pump and the condition of the heating system. - The boiler automatically returns to operating condition after the reasons for the blockage have been eliminated.

5) LED flashes yellow

a) Insufficient pressure in the heating system

Leaks in the heating system - Check the condition of the heating system. - Disconnected pressure switch - Connect relay. - Defective pressure switch - Replace it. The boiler automatically returns to operating condition after the reasons for the blockage have been eliminated.

6) LED flashes yellow and red

Heating circuit temperature sensor disconnected - Connect it. - Defective heating circuit temperature sensor - Replace it. The Nova Florida Vela Compact boiler automatically returns to working condition after the causes of the blockage have been eliminated.

7) LED flashes green and red

a) The heating circuit temperature sensor does not work

DHW temperature sensor disconnected - Connect it. - Defective DHW temperature sensor - Replace it. The unit automatically returns to operating condition after the causes of blockage have been eliminated

8) The DHW circuit of the boiler is not working

a) The flow sensor does not work

Insufficient pressure or flow in the DHW circuit - Check dHW system and a flow sensor filter. - Flow sensor defective or disconnected - Replace or reconnect it. - The flow sensor relay is stuck - Replace it.

LED flashes green

a) Gas valve modulator does not work

Loose or missing connection between control board and gas valve - Check the gas valve connections. - The gas valve modulator coil is defective - Replace the gas valve modulator coil.

The unit automatically returns to operating condition after the causes of blockage have been eliminated.

Errors of gas boilers Ferroli

Errors of gas boilers Ariston

Errors of Baksi gas boilers

Operation of Daewoo boilers

Errors of gas boilers Beretta

Errors of gas boilers Buderus

Errors of gas boilers Vilant

Malfunctions and repairs Navien

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Overview of the gas boiler KSG Ochag

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Checks and adjustments of the boiler Nova Florida Vela Compact

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Adjustments of the gas boiler Nova Florida Vela Compact

Conversion from natural gas to liquefied gas

Make sure that the wall-mounted boiler is disconnected from the power supply; - remove the main burner; - remove the nozzles from the main burner and replace them with nozzles of the required diameter, depending on the type of new gas. - it is imperative to install new copper gaskets; - replace the main burner; - on the electronic board of the boiler, set the MET-GPL jumper to the GPL position; - adjust the gas valve.

Gas valve adjustment siemens vgu56.a1109

Fig. 5. Siemens gas valve adjustment

Using a small screwdriver, unscrew the protective screw in the gas inlet pressure measurement connection, connect a micromanometer to the connection and check the gas pressure at the valve inlet (in the gas line). - Then, in the same way, connect the micromanometer to the gas pressure measuring point at the valve outlet. - Switch on the wall-mounted boiler Nova Florida Vela Compact to maximum heating power by opening a large DHW draw-off and setting the DHW temperature controller to maximum. - After removing the yellow plastic protective cap A, turn screw C counterclockwise to decrease the pressure and clockwise to increase the pressure. - After setting the maximum pressure, remove the connector from the modulator reel in order to set the boiler to the minimum heat output. - Adjust the minimum pressure with the inner screw B of the gas valve (hold the outer screw C stationary). - Put the connector on the modulator bobbin and check the correctness and noiselessness of the burner ignition; - Check for gas leaks; - Replace the protective plastic cap A; - After completing the above operations, fill in the tag indicating the set parameters and attach it to the machine. Gas boiler checks Nova Florida Vela Compact

Checking the functionality of temperature sensors

The electronics checks the correct functioning of the NTC sensors connected to the boiler control board. If the temperature perceived by the sensor is outside the correct temperature range recorded by the sensor, then this is perceived as a malfunction of the sensor. - Violation of the heating circuit temperature sensor in heating mode or in the anti-freeze function: the burner turns off immediately; the pump stops after completing a post-circulation cycle; the fan runs for 1 minute. Any requests for heating or anti-freeze function are ignored. - Malfunction of the heating circuit temperature sensor when the wall-mounted boiler Nova Florida Vela Compact is either in standby mode, or in summer mode, or in winter mode, or in the absence of any requests: the boiler performs the post-circulation function (1 second in winter mode, 30 seconds in summer) and post-ventilation function for 1 minute. - Violation of the heating circuit temperature sensor in DHW mode: the violation is only signaled, but DHW continues to be provided. - Violation of the DHW temperature sensor when the DHW request is fulfilled: the burner turns off immediately; the pump performs post-circulation for 1 second in summer and 30 seconds in winter. - The fan runs for 1 minute (duration of the post-ventilation function after blocking or malfunction of the temperature sensor). Any DHW demand is ignored while the heating and anti-freeze functions are active.

General check of the gas valve modulator

The electronics check the function of the proportional modulator of the gas valve. A malfunction is detected if the modulator is electrically disconnected or has a short circuit. In the event of a malfunction of the modulator, all boiler functions are retained, but at the minimum heat output. The modulator malfunction signal disappears when the electrical parameters of the modulator return to standard limits.

Automatic flame check

A flame detection device is always active and monitors the presence of a flame continuously. When a request is received to turn on the boiler, the state of the contacts of the differential air pressure switch (model CTFS 24 AF) is checked and the fan is turned on. When the initial state of the contacts of the differential air pressure switch (boiler Nova Florida Vela Compact CTFS 24 AF) or the flue gas thermostat (model CTFN 24) is correct, the device maintains a TW delay (1.5 seconds), after which it switches on the gas valve and ignition transformer. If a flame is detected, the gas valve remains open.

Ignition development

After a delay, burner ignition is initialized. The current in the modulator coil rises within 10 seconds: from the value corresponding to the minimum gas pressure to 65% of the maximum value for a device with an open combustion chamber and 80% of the maximum value for a turbo boiler). Actually, the ignition procedure is completed 1 second after the presence of a flame is determined. Now, only in devices with a closed combustion chamber, the process of flame development continues, which consists in the fact that a current increasing to a maximum is supplied to the modulator for two seconds. After the full development of the flame, the gas boiler Nova Florida Vela Compact begins to work in normal mode. The ignition transformer turns off 2 seconds after detecting the presence of a flame or at the end of the safe ignition period. If in cold conditions when trying to ignite the flame does not occur, repeated attempts to ignite are automatically carried out (up to 5 attempts for a turbo boiler and 2 attempts for a chimney). Between ignition attempts, the combustion chamber is ventilated (10 seconds for a turbo boiler and 35 seconds for a chimney). If the flame disappears, the flame detection device tries to ignite again. The flame detection device goes into lockout state when no flame was detected during the last ignition attempt during the TS ignition period (10 seconds) or if an extraneous flame is detected with the gas valve off for more than 1 minute. To unlock it is necessary to wait a few seconds, turn the corresponding regulator to the unlocked position, wait a while and return the regulator to the desired position.

Flue gas thermostat (only Nova Florida Vela Compact CTN 24 AF boiler)

The flue gas thermostat contacts are normally closed. When the exit of flue gases is difficult, the smoke begins to flow around the smoke trap from the outside and the temperature of the smoke trap (on which the thermostat is installed) rises, as a result of which the thermostat triggers open the contacts of the latter. When the contacts open, the gas valve is de-energized and 2 seconds after the contacts open, the electronic board is blocked (if the thermostat contacts are closed within 2 seconds, the electronic board will continue to function normally). After blocking, the pump performs post-circulation. If, within 10 seconds after blocking, the thermostat contacts close, then the Nova Florida Vela Compact boiler can restart. The ten minute waiting period can be reset to zero by unlocking the appliance with the DHW regulator. Start of ignition: if, within 2 seconds after the start of ignition, the contacts of the flue gas thermostat open, the board is blocked and the pump is recirculated. After 10 minutes of interlock due to open flue gas thermostat (waiting period for flue gas thermostat), the board can automatically restart if the flue thermostat contacts are closed. The ten minute waiting period can be reset to zero by unblocking the boiler using the DHW regulator. To unlock it is necessary to wait about 5 seconds, turn the corresponding regulator to the unlocked position, wait a while and return the regulator to the desired position.

Differential air pressure switch (only boiler model Nova Florida Vela Compact CTFS 24)

The air pressure switch is connected directly to the electronic board and its contacts are normally open. Before the fan is switched on, the contacts of the air pressure switch are in the N.O. state. (normally open), and close after the fan is turned on. When the air pressure switch contacts are open, the gas valve cannot turn on. If, 10 seconds after turning on the exhaust fan, the air pressure switch contacts are still open, a blocking signal is generated, which does not require the unlocking procedure. The same blocking signal, which does not require the unblocking procedure, is also generated if the contacts of the air pressure switch are in the wrong position in standby mode or during boiler operation. If the contacts of the air pressure switch are in the wrong position for more than 1 minute, then the boiler goes into a permanent blocking state, the exit from which requires the unblocking procedure. Differential relay pressure: 45/35 Pa Pmax \u003d 1500 Pa

Safety thermostat

The safety thermostat is located on the bithermal heat exchanger and its contacts are normally closed. When the temperature is detected above 95 ° C, the contacts open, thereby interrupting the power supply to the gas valve and turning off the burner. If the safety thermostat is triggered when the gas valve is running, the boiler will shut down. Activation of the safety thermostat when the gas valve is not working (between requests or when the boiler is in standby mode) leads to a malfunction signal (LED 2 lights up red). This situation does not require an unlocking procedure. Burner start-up will be delayed until the safety thermostat contacts are closed. The safety thermostat with normally closed contacts switches the voltage 20Vdc. Response temperature 95 ° C. Heating circuit temperature sensor: NTC 10k Ohm at 25 ° C.

DHW temperature sensor: NTC 10k Ohm at 25 ° C.

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Heating systems for country and country houses. Boilers, gas water heaters, water heaters - Repair, service, operation. Recommendations for assembly and installation.

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Operation of boilers Nova Florida Vela Compact

Boiler start-up Nova Florida Vela Compact

Before starting up the Nova Florida Vela Compact boiler, make sure that:

The flue gas duct and the protruding part of the pipe are installed according to the instructions: when the device is switched on, there should be no leakage of combustion products through the seals; - the unit is connected to a 230 V and 50 Hz power supply network; - the system is properly filled with coolant (pressure on the manometer - 1-1.3 bar); - possible shut-off valves in the pipes of the heating system are open; - the gas in the network corresponds to the gas for which the boiler is adjusted at the factory: otherwise, change the boiler to another gas. - the gas supply valve is open; - no gas leakage; - the external general switch installed in front of the boiler is on; - the boiler safety valve 3 bar is not blocked; - no coolant leaks; - the pump is not blocked.

Fig. 6 - Scheme of the control board

0SCHEMOD11: PCB M3-M11: Line contacts, TA M13: Telemetry control interface M2-M12: Accessory contacts E: Ignition and flame detection electrode P: Circulation pump V: Fan (only for TFS model) TF: Flue gas thermostat (only for TN model) PV: Fan pressure switch (only for TFS model) DK: Safety water pressure switch SR: Heating sensor 10k Ohm 25 ° CB \u003d 343 5 SS: DHW sensor 10k Ohm 25 ° CB \u003d 343 5 TA: Indoor thermostat (optional) CM1-CM2: Jumpers for selecting the boiler type / gas type FL: Flow sensor VG: Gas valve TL: Limit value thermostat

Boiler operation Nova Florida Vela Compact

Turning on

The following procedures should only be carried out after the Nova Florida Vela Compact boiler has been installed, checked and installed by a qualified commissioner. - Open the gas shut-off valve. - Apply power to the unit (LED will light up green). - Select the boiler operating mode using the regulator. - Use the regulator to set the desired temperature of the heating medium in the heating circuit. - Set the DHW temperature with the regulator. - If there is a room thermostat, set the desired room temperature on it. When requested by the heating system, the LED will light up green. When a flame appears, the LED will turn yellow. When the boiler is turned on after a long period of inactivity, especially if it runs on liquefied gas, it can be difficult to start the boiler. In this case, turn on any other gas appliance (eg stove, oven, etc.) before starting the boiler. Even after such actions, the device may be difficult to start and lock once or twice. Unlock by turning the knob to the position for a few seconds.

Operation of boilers Nova Florida Vela Compact

To prevent too frequent switching on / off in heating mode, the boiler maintains a four-minute pause between switching on. However, if the temperature in the heating system falls below 40 ° C, the pause between switching on will be canceled and the device will turn on as needed. The boiler electronics always prioritizes DHW over heating. The domestic hot water temperature can be set between 35 ° C and 58 ° C. The temperature of the heating medium in the heating system can be set in the range from 35 ° C to 78 ° C. The Nova Florida Vela Compact boiler is equipped with a domestic hot water flow limiter, which allows you to get a maximum of 10 liters per minute. The hot water performance depends on the heat output and the temperature difference by which the device heats the water. The appliance is equipped with an anti-freeze system, which is disabled in the standby mode of the boiler. When the temperature sensor in the heating circuit detects a temperature of 5 ° C, the device turns on at minimum power and works for 15 minutes or until the temperature rises to 30 ° C. When it turns off, the pump continues to run anyway. The anti-freeze function only protects the unit and not any other components of the heating system. The heating system can be protected with a room thermostat, but remember that when the boiler is put into standby mode, the room thermostat is deactivated. The heating system can be effectively protected against freezing by using special anti-freeze products suitable for heating systems with different types of structural metals. Do not use automotive antifreeze and periodically check the effectiveness of the product. If the unit is idle, but connected to the mains, the pump is switched on every 24 hours for 30 seconds to prevent seizure.

Boiler lockout Nova Florida Vela Compact

When abnormal conditions are created during the operation of the Nova Florida Vela Compact boiler, it is automatically blocked. Proceed as described below depending on the reason for blocking.

Burner lockout

When the burner locks out, LED 2 (Fig. 1) lights up red.

If this happens, proceed as follows:

Check if the gas valve is open and if there is gas in the line (by turning on the stove, for example). - after making sure that gas is supplied, unlock the burner by turning the regulator to position for a few seconds. If the boiler does not turn on and locks out again on the third attempt, contact a qualified technician. If burner shutdown occurs frequently, signaling a permanently recurring malfunction, contact the Service Center for maintenance.

Overheating lock

When overheating occurs in the heating system, the LED indicator flashes red.

Blocking in case of insufficient pressure in the system

If the Nova Florida Vela Compact boiler locks out due to the pressure switch tripping, the LED indicator flashes yellow. Feed the heating system through the make-up tap located at the bottom next to the hydraulic connections. The pressure in the heating system (when cold) must be between 1 and 1.3 bar.

To restore pressure in the heating system, proceed as follows:

Open the system make-up valve by turning it counterclockwise and keep it open until the pressure gauge shows a pressure of 1-1.3 bar. - Close the system make-up valve by turning it clockwise. If the boiler shutdown occurs frequently for this reason, this indicates a malfunction in the heating system. When the make-up of the system is complete, carefully and carefully close the make-up valve. If the make-up valve is not closed completely, then this may increase the pressure in the heating system, which will trigger the boiler safety valve and possibly splash water from it.

Blocking in case of violations in the flue gas / air supply system

In the event of conditions causing abnormal operation of the chimney or air supply, the boiler is shut down. When the boiler is blocked due to a violation in the flue gas / air supply system, the LED indicator lights up yellow.

Blocking in case of failure of temperature sensors

If the device is blocked due to irregularities in the temperature sensors, the LED indicator flashes as follows:

Yellow / red for the heating circuit temperature sensor; - red / green for the DHW temperature sensor.

Adjusting the maximum power

Check the value of the gas pressure at the inlet; - remove the plastic cap located on the modulator reel, which protects the adjusting screws of the pressure regulator; - connect a micromanometer to the IN connection to check the pressure at the gas valve inlet or to the OUT connection to check the pressure on the burner; - turn the regulator on the control panel clockwise until it stops and open one or two hot water taps so that the Nova Florida Vela Compact boiler works at maximum power; - to INCREASE the pressure on the burner, turn the brass nut clockwise and to DECREASE the pressure, turn it counterclockwise. - when working on liquefied gas, turn the brass nut clockwise until it stops.

Fig. 7 - Adjustment of the gas valve

Minimum power adjustment

Remove the connector from the bobbin regulator); - turn on the burner and check if the minimum pressure corresponds to the set value; - using a 10 mm wrench, while holding the nut in a fixed position, turn the plastic screw clockwise to increase the pressure and counterclockwise to decrease the pressure. - put the connector on the modulator bobbin.

Final operations

Switch on the boiler and check the correctness and noiselessness of the burner ignition; - check again the maximum and minimum pressure on the gas valve; - adjust it if necessary; - replace the protective plastic cap; - close the gas pressure measuring points; - check for gas leaks.

Things to check:

General condition of the apparatus; - tightness of the gas system of the boiler and the gas supply line to the boiler; - gas pressure at the inlet to the apparatus; - minimum and maximum pressure on the burner; - turning on the boiler; - combustion parameters by gas analysis; - integrity, degree of wear and tightness of chimneys; - operation of the traction interrupt device (CTN); - absence of flue gas leaks into the room and correct operation of the chimney (CTN); - correct operation of the flue gas safety thermostat (CTN); - operation of the fan pressure switch (CTFS); - the overall integrity of all safety devices boiler; - absence of water leaks and oxidation of compounds in the boiler; - operation of the system safety valve; - pressure of the expansion tank; - operation of the pressure switch in the system.

Cleaning operations for the boiler Nova Florida Vela Compact:

General cleaning of the inside of the unit; - cleaning of gas injectors; - cleaning of air intake and gas outlet pipes (CTFS); - cleaning the traction interrupter (CTN); - cleaning of ventilation grilles in the room where the boiler is installed (CTN); - cleaning the outside of the heat exchanger;

When performing the first maintenance, also check:

Suitability of the premises for the installation of the boiler; - ventilation ducts in the room where the boiler is installed (CTN); - chimneys, their diameters and length;

Correct installation of the boiler according to the instructions given in this manual.

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How to choose a gas boiler for heating and hot water supply at home

P about the assessment of marketers, when buying a gas boiler, people most often choose double-circuit wall-mounted boilers... Because the double-circuit wall-mounted gas boiler, firstly, does not take up space on the floor, and secondly, and this is the main advantage - the function of preparing hot water for household needs. The buyer does not need to additionally purchase any boiler or column. This is not necessary, because a double-circuit boiler performs two functions: heating water (and maintaining its set temperature) for the heating system and heating water for the hot water supply (DHW) system.

Wall-mounted double-circuit gas boilers have a power range from 12 to 35 kW. Power of 35 kW is quite enough for heating premises with an area of \u200b\u200b350 - 400 sq. M. And in the preparation of hot water, a double-circuit gas boiler is in no way inferior to gas water heaters. Neither performance nor comfort. Boiler productivity is from 8 to 13 liters of hot water per minute. Double-circuit gas boilers are of two types: with a bithermal ("pipe in a pipe") heat exchanger and with separate heat exchangers (one for the heating system, and the other for hot water supply). It must be said that replacing a bithermal heat exchanger is more expensive than replacing a DHW heat exchanger. You should also pay attention to this when choosing a boiler. Like any other technique, gas boilers also "break down". By the way, the owner of the boiler should not forget about the annual service. And, as a rule, breakdowns occur at the most inopportune moment - during the heating season. And the most unpleasant thing is in severe frost, and for some reason the service department does not come to you. And if you have arrived, then their services are not cheap. Therefore, if you feel in yourself the strength, ability and desire to understand the structure and logic of your boiler yourself, we will help you with advice. And not always you may need a spare part to fix a breakdown.

Don't panic, save money and sort it out ...

And so, if you decide to repair the boiler yourself, you need to know the logic of its operation. The device of boilers of various brands is similar, we will consider everything on the example of the Ariston boiler (Ariston).

The device of a turbocharged (turbo) boiler with a closed combustion chamber (FF) - fig. one Main components:

1 - air intakes for a dual system

smoke removal / air supply;

2 - pneumorel (pressure switch);

3 - condensate collector for pneumatic relay;

4 - overheating thermostat;

5 - main heat exchanger (heating heat exchanger);

6 - supply NTC1 sensor;

7 - burner with electrodes;

8 - gas valve / ignition device;

9 - NTC DHW sensor;

10 - relief (safety) valve, 3 bar;

11 - control panel;

12 - circulation pump;

13 - NTC2 return (return) sensor;

14 - fan;

15 - holes for smoke analysis;

16 - exhaust manifold.

Deviceandatmospheric(atmo) boiler fromfromcovered combustion chamber (FROMF) — fig. 2

Main components:

1 - exhaust hood;

2 - thrust sensor;

3 - overheating thermostat;

4 - supply NTC1 sensor;

5 - burner with electrodes;

6 - gas valve and ignition device;

7 - NTC DHW sensor;

8 - relief (safety) valve, 3 bar;

9 - control panel;

10 - circulation pump;

11 - NTC2 return (return) sensor;

12 - main heat exchanger.

Boiler operation logic in heating mode

Consider step by step the operation of the boiler using detailed diagram his devices.

Command to turn on the boiler in heating mode

The command is given from the temperature sensor NTC1 (pos. 20, see diagram below) located on the boiler flow pipe. If you use additional equipment to control the operation of the boiler (timer, thermostat, room programmer, module remote control), the command to turn on the heating is given by this device.

Consider the option when the command is supplied from the NTC1 sensor. At this moment, the actual temperature of the heating medium determined by the sensor is compared with the temperature set on the control panel. And, if the actual temperature is less than the set one, the boiler starts heating mode. The activation of the mode is accompanied by the indication of LEDs on the front panel of the boiler or the appearance of information on the display (if your boiler has one).

In standby mode for heating activation, the three-way valve (pos. 10, see diagram below) is in the DHW position. That is, the outlet of the secondary DHW heat exchanger is open, and the inlet of the pump and the heating system is closed. At the moment of switching on the heating mode, voltage is applied to the contacts of the stepper motor, which changes the position of the three-way valve: the outlet from the secondary DHW heat exchanger is closed and the suction cavity of the pump with the heating system opens. The change in the position of the three-way valve does not occur instantly, but within 7 seconds after the command to turn on.

3. Switching on the pump

After switching the three-way valve to heating mode, voltage is supplied to the circulation pump (pos. 7, see diagram below). And the pump begins to supply the coolant from the heating system to the main heat exchanger of the boiler.

4. Turning on the fan

The fan relay on the control board drives the fan (key 25, see diagram below).

The evacuation (removal) of any remaining waste gases begins.

5. Control over the removal of exhaust gases

Boiler operation diagram in heating mode

1 - pneumorel - pressure switch - smoke pressure switch; 2 - primary heat exchanger;

3 - temperature sensor - NTC2-return (return); 4 - volume compensator - hydraulic compensator - expansion tank;

5 - manometer; 6 - automatic air vent - air vent;

7 - circulation pump; 8 - three-way valve drive;

9 - flow sensor; 10 - three-way valve;

11 - return valve - return - heating; 12 - cold water inlet tap;

13 - gas tap; 14 - hot water tap;

15 - tap for entry - supply - heating; 16 - secondary heat exchanger for hot water supply;

17 - buy-pass; 18 - gas valve - gas fittings;

19 - overheating sensor; 20 - temperature sensor - NTC1-feed;

21 - burner; 22 - electrical unit;

23 - flame control electrode - ionization; 24 - ignition electrode;

25 - fan - smoke exhauster.

6. Burner ignition

7. Flame control

8. Circulation control

9. Modulation of the flame

Modulation occurs within the maximum heating power (set on the control panel) and the minimum power set on the gas valve.

10. Superheat control

Boiler operation logic in DHW mode

Consider step by step the operation of the boiler using the same scheme.

1. Switching on hot water preparation

Switching the boiler into DHW mode fixes the flow sensor (pos. 9, see the diagram above) and feeds it to the boiler control board.

2. Turning on the three-way valve

In standby mode, the three-way valve (pos. 10, see diagram above) is always in the DHW position. And if switching on to the DHW mode occurred when the boiler was operating in heating mode, the three-way valve will move to the DHW position (DHW priority).

3. Switching on the pump

Voltage is applied to the contacts of the circulation pump (pos. 7, see the diagram above), it turns on and supplies the coolant from the secondary heat exchanger (pos. 16, see the diagram above) to the main one (pos. 2, see the diagram above).

4. Turning on the fan

The fan relay on the control board drives the fan (pos. 25, see the diagram above), and the pneumatic relay - the smoke pressure switch (pos. 1, see the diagram above) monitors the efficiency of evacuation (removal) of exhaust gases (this happens in turbocharged boilers ).

5. Control of exhaust gas removal

In turbocharged boilers with a closed combustion chamber, a pneumorele (smoke pressure switch) "monitors" the efficiency of removal of combustion products (item 1, see diagram below). If everything is correct, the contacts of the pressure switch are closed and a command is sent to ignite the burner. If not, the operation of the boiler is blocked by the control board.

In atmospheric boilers with an open combustion chamber, a temperature draft sensor “monitors” the removal of combustion products. If suddenly it is cut off or triggered by overheating due to poor gas discharge, then the control board also blocks the boiler. 6. Burner ignition After the contacts of the pressure switch are closed, the gas valve (pos. 18, see diagram above) is activated and passes the set amount of gas for smooth ignition. High-voltage pulses go from the ignition coil to the ignition electrode (pos. 24, see the diagram above). A spark jumps between the electrode contact and the burner body (pos. 21, see diagram above) - the burner ignites. 7. Flame control The presence of a flame is monitored by an ionization electrode (pos. 23, see diagram above). It checks for the presence of ionization current and if it is absent within 8 seconds, the boiler is blocked. The principle of flame control by ionization is based on the fact that when gas is burned, many free electrons and ions are formed. These particles are "attracted" to the ionization electrode and cause an ionization current of tens of microamperes to flow. If the flame goes out - the ionization intensity falls below a certain level, the burner turns off. The reason for the disappearance of ionization may be contamination or burning of the ionization (control) electrode. Another reason for the loss of the ionization signal may be a decrease in the resistance between the ionization electrode and the torch body due to the deposition of conductive dust. 8. Circulation control

The circulation is controlled by temperature sensors NTC1 on the flow (pos. 20, see the diagram above) and NTC2 on the return pipeline - "return" (pos. 3, see the diagram above). The temperature difference and rate of change is controlled. If this data is normal - the boiler continues to work, if not - the boiler is blocked.

9. Modulation of the flame

After registering a flame, the boiler performs modulation. Modulation is an automatic smooth change in the flame power gas burner depending on the heat demand at the moment. This method of regulation is the most modern and economical.

Flame modulation gives comfort when using the DHW system, as it allows you to precisely maintain the water temperature set by the consumer. The burner power automatically adjusts to the heat output required for heating or heating water.

Modulation takes place within the maximum DHW power and minimum power (set on the gas valve).

10. Superheat control The overheating sensor (pos. 19, see the diagram above) is responsible for boiler overheating. If the temperature on the sensor reaches 102 - 105 degrees. C - the boiler is blocked. Note:in boilers with a bithermic heat exchanger, there is no three-way valve. If the flow sensor (item 9, see the diagram above) detects the water supply, the boiler switches to DHW mode. If the flow sensor does not register the water supply, then the boiler will operate in heating mode. Boiler operation diagram in DHW mode

The logic of operation of boilers of different brands may differ slightly, but the basic principles are the same.

Being guided at what stage of its operation the boiler enters emergency mode, you can determine the possible cause of the malfunction and eliminate it yourself.

We wish you good luck!

P about the assessment of marketers, when buying a gas boiler, people most often choose double-circuit wall-mounted boilers. Because the double-circuit wall-mounted gas boiler, firstly, does not take up space on the floor, and secondly, and this is the main advantage - the function of preparing hot water for household needs. The buyer does not need to additionally purchase any boiler or column. This is not necessary, because a double-circuit boiler performs two functions: heating water (and maintaining its set temperature) for the heating system and heating water for the hot water supply (DHW) system.

Wall-mounted double-circuit gas boilers have a power range from 12 to 35 kW. Power of 35 kW is quite enough for heating premises with an area of \u200b\u200b350 - 400 sq. M. And in the preparation of hot water, a double-circuit gas boiler is in no way inferior to gas water heaters. Neither performance nor comfort. Boiler productivity is from 8 to 13 liters of hot water per minute. Double-circuit gas boilers are of two types: with a bithermal ("pipe in a pipe") heat exchanger and with separate heat exchangers (one for the heating system, and the other for hot water supply). It must be said that replacing a bithermal heat exchanger is more expensive than replacing a DHW heat exchanger. You should also pay attention to this when choosing a boiler. Like any other technique, gas boilers also "break down". By the way, the owner of the boiler should not forget about the annual service. And, as a rule, breakdowns occur at the most inopportune moment - during the heating season. And the most unpleasant thing is in severe frost, and for some reason the service department does not come to you. And if you have arrived, then their services are not cheap. Therefore, if you feel in yourself the strength, capabilities and desire to understand the structure and logic of your boiler, we will help you with advice. And not always you may need a spare part to fix a breakdown.

Do not panic, save money and sort it out ...

And so, if you decide to repair the boiler yourself, you need to know the logic of its operation. The device of boilers of various brands is similar, we will consider everything using the example of the Ariston boiler (Ariston).

The device of a turbocharged (turbo) boiler with a closed combustion chamber (FF) - fig. one Main components:

1 - air intakes for a dual system

smoke removal / air supply;

2 - pneumorel (pressure switch);

3 - condensate collector for pneumatic relay;

4 - overheating thermostat;

5 - main heat exchanger (heating heat exchanger);

6 - NTC1 feed sensor;

7 - burner with electrodes;

8 - gas valve / ignition device;

9 - NTC DHW sensor;

10 - relief (safety) valve, 3 bar;

11 - control panel;

12 - circulation pump;

13 - NTC2 return (return) sensor;

14 - fan;

15 - holes for smoke analysis;

16 - exhaust manifold.

Deviceandatmospheric(atmo) boiler fromfromcovered combustion chamber (FROMF) - fig. 2

Main components:

1 - exhaust hood;

2 - thrust sensor;

3 - overheating thermostat;

4 - supply NTC1 sensor;

5 - burner with electrodes;

6 - gas valve and ignition device;

7 - NTC DHW sensor;

8 - relief (safety) valve, 3 bar;

9 - control panel;

10 - circulation pump;

11 - NTC2 return (return) sensor;

12 - main heat exchanger.

Boiler operation logic in heating mode

Consider step by step the operation of the boiler using a detailed diagram of its device.

Command to turn on the boiler in heating mode

The command is given from the temperature sensor NTC1 (pos. 20, see diagram below) located on the boiler flow pipe. If you use additional equipment to control the operation of the boiler (timer, thermostat, room programmer, remote control module), then the command to turn on the heating is given by this device.

Consider the option when the command is supplied from the NTC1 sensor. At this moment, the actual temperature of the heating medium determined by the sensor is compared with the temperature set on the control panel. And, if the actual temperature is less than the set one, the boiler starts heating mode. The activation of the mode is accompanied by the indication of LEDs on the front panel of the boiler or the appearance of information on the display (if your boiler has one).

In standby mode for heating activation, the three-way valve (pos. 10, see diagram below) is in the DHW position. That is, the outlet of the secondary DHW heat exchanger is open, and the inlet of the pump and the heating system is closed. At the moment of switching on the heating mode, voltage is applied to the contacts of the stepper motor, which changes the position of the three-way valve: the outlet from the secondary DHW heat exchanger is closed and the suction cavity of the pump with the heating system opens. The change in the position of the three-way valve does not occur instantly, but within 7 seconds after the command to turn on.

3. Switching on the pump

After switching the three-way valve to heating mode, voltage is supplied to the circulation pump (pos. 7, see diagram below). And the pump begins to supply the coolant from the heating system to the main heat exchanger of the boiler.

4. Turning on the fan

The fan relay on the control board drives the fan (key 25, see diagram below).

The evacuation (removal) of any remaining waste gases begins.

5. Control over the removal of exhaust gases

Boiler operation diagram in heating mode

1 - pneumorel - pressure switch - smoke pressure switch; 2 - primary heat exchanger;

3 - temperature sensor - NTC2-return (return); 4 - volume compensator - hydraulic compensator - expansion tank;

5 - manometer; 6 - automatic air vent - air vent;

7 - circulation pump; 8 - three-way valve drive;

9 - flow sensor; 10 - three-way valve;

11 - return valve - return - heating; 12 - cold water inlet tap;

13 - gas tap; 14 - hot water tap;

15 - tap for entry - supply - heating; 16 - secondary heat exchanger for hot water supply;

17 - buy-pass; 18 - gas valve - gas fittings;

19 - overheating sensor; 20 - temperature sensor - NTC1 supply;

21 - burner; 22 - electrical unit;

23 - flame control electrode - ionization; 24 - ignition electrode;

25 - fan - smoke exhauster.

6. Burner ignition

7. Flame control

8. Circulation control

9. Modulation of the flame

Modulation occurs within the maximum heating power (set on the control panel) and the minimum power set on the gas valve.

10. Superheat control

Boiler operation logic in DHW mode

Consider step by step the operation of the boiler using the same scheme.

1. Switching on hot water preparation

Switching on the boiler to DHW mode fixes the flow sensor (pos. 9, see the diagram above) and feeds it to the boiler control board.

2. Turning on the three-way valve

In standby mode, the three-way valve (pos. 10, see diagram above) is always in the DHW position. And if switching to DHW mode occurred when the boiler was operating in heating mode, the three-way valve will move to the DHW position (DHW priority).

3. Switching on the pump

Voltage is applied to the contacts of the circulation pump (pos. 7, see the diagram above), it turns on and supplies the coolant from the secondary heat exchanger (pos. 16, see the diagram above) to the main one (pos. 2, see the diagram above).

4. Turning on the fan

The fan relay on the control board activates the fan (pos. 25, see the diagram above), and the pneumatic relay - the smoke pressure switch (pos. 1, see the diagram above) monitors the efficiency of evacuation (removal) of exhaust gases (this happens in turbocharged boilers ).

5. Control of exhaust gas removal

In turbocharged boilers with a closed combustion chamber, a pneumorele (smoke pressure switch) "monitors" the efficiency of removal of combustion products (item 1, see diagram below). If everything is correct, the contacts of the pressure switch are closed and a command is sent to ignite the burner. If not, the operation of the boiler is blocked by the control board.

In atmospheric boilers with an open combustion chamber, a temperature draft sensor “monitors” the removal of combustion products. If suddenly it is cut off or triggered by overheating due to poor gas discharge, then the control board also blocks the boiler. 6. Burner ignition After the contacts of the pressure switch are closed, the gas valve (pos. 18, see diagram above) is activated and passes the set amount of gas for smooth ignition. High-voltage pulses go from the ignition coil to the ignition electrode (pos. 24, see the diagram above). A spark jumps between the electrode contact and the burner body (pos. 21, see diagram above) - the burner ignites. 7. Flame control The presence of a flame is monitored by an ionization electrode (pos. 23, see diagram above). It checks for the presence of ionization current and if it is absent within 8 seconds, the boiler is blocked. The principle of flame control by ionization is based on the fact that when gas is burned, many free electrons and ions are formed. These particles are "attracted" to the ionization electrode and cause an ionization current of tens of microamperes to flow. If the flame goes out - the ionization intensity falls below a certain level, the burner turns off. The reason for the disappearance of ionization may be contamination or burning of the ionization (control) electrode. Another reason for the loss of the ionization signal may be a decrease in the resistance between the ionization electrode and the torch body due to the deposition of conductive dust. 8. Circulation control

The circulation is controlled by temperature sensors NTC1 on the flow (pos. 20, see the diagram above) and NTC2 on the return pipeline - "return" (pos. 3, see the diagram above). The temperature difference and rate of change is controlled. If this data is normal - the boiler continues to work, if not - the boiler is blocked.

9. Modulation of the flame

After registering a flame, the boiler performs modulation. Modulation is an automatic smooth change in the power of the gas burner flame depending on the heat demand at the moment. This method of regulation is the most modern and economical.

Flame modulation gives comfort when using the DHW system, as it allows you to precisely maintain the water temperature set by the consumer. The burner power automatically adjusts to the heat output required for heating or heating water.

Modulation takes place within the maximum DHW power and minimum power (set on the gas valve).

10. Superheat control The overheating sensor (pos. 19, see the diagram above) is responsible for boiler overheating. If the temperature on the sensor reaches 102 - 105 degrees. C - the boiler is blocked. Note:in boilers with a bithermic heat exchanger, there is no three-way valve. If the flow sensor (item 9, see the diagram above) detects the water supply, the boiler switches to DHW mode. If the flow sensor does not register the water supply, then the boiler will operate in heating mode. Boiler operation diagram in DHW mode

The logic of operation of boilers of different brands may differ slightly, but the basic principles are the same.

Being guided at what stage of its operation the boiler enters emergency mode, you can determine the possible cause of the malfunction and eliminate it yourself.

We wish you good luck!

The huge popularity that Nova Florida gas boilers have is provided by: a large range of equipment performance, the ability to choose the required configuration, small size and attractive cost. All this explains why heating equipment from Nova Florida is so popular with domestic consumers.

Types of gas equipment

Nova Florida manufactures several types of heating equipment, components for the installation of a heating system, as well as all the necessary components for the operation of boilers. All products can be divided into the following types:

Start-up and adjustment of all equipment should be carried out by a specialized team. After completing the work, the boiler is guaranteed.

Hinged boiler equipment

Hinged gas heating boiler Nova Florida has several dozen modifications. To facilitate the selection of a suitable model, you can pay attention to the following:

If necessary, the boiler can be regulated remotely using the remote control or GSM notification.

Floor standing boilers

Gas floor-standing boilers heating Nova Florida can also be divided into several categories depending on the technical device of the structure:

All Nova Florida boiler models support the ability to connect an external thermostat and room temperature sensors. Their installation ensures the optimization of the heating operation.

Installation and commissioning

During the installation of Nova Florida boilers, it is necessary to observe general rules safety regarding the installation of gas equipment. In this case, some features and characteristics of the technique should be taken into account:

When choosing, first of all, one should be guided by the required power of the device. You can calculate performance using a simple calculation:

1 kW \u003d 10 m2

You should also take into account the principle of operation of the equipment. Atmospheric boilers are less whimsical in operation and more reliable, but they have a higher gas consumption. Condensing ones require fine tuning, but they can reduce fuel costs by up to 30%.

The cost of the Nova Florida boiler in the basic configuration is quite attractive for the price segment in which it is located. For a relatively low price, efficient equipment is provided with all the functions necessary for heating and hot water supply.

The gas wall-hung boiler Nova Florida Vela CTFS 24 AF cannot start. If we press the on / off button, the burner functions. If you release the button, the unit dies out. Explain the cause of the problem?

The thermoelectric converter or gas valve may be faulty. A decrease in gas pressure on the inlet pipeline may also occur. Sometimes there is a lack of voltage on the control board.

There was a problem recently. The inclusion is very poor. The pilot burner ignites, but there is no flame on the main gas burner equipment. Can anyone please explain what is the reason?

Most likely a malfunction of the ignition mechanism. You need to service the boiler and clean the ignition device.

Because of what the Nova Florida Vela Compact double-circuit boiler does not stop working after the required temperature is established? It heats up to 85C, then it crashes. During the restart operation, everything is repeated.

Presumably, the electronic board is not in order, the temperature sensor is broken, the overheating protection button has a problem. It cannot be ruled out that an error occurred in the automatic adjustments.

Please tell me why it is not possible to raise the temperature of the coolant over 70 C? We need to increase the temperature, and the screen shows that this is the maximum. How do I adjust the heating?

If the device cannot raise the temperature in the heating circuit, then the following reasons are possible. In the specified settings, a limit is set on the highest heating temperature not higher than 70C. There is a decrease in the draft velocity in the chimney.

The wall-mounted Nova Florida Delfis boiler is unstable in the mode of heating the DHW system. Hot and cold water can alternate from the tap. Tell me what is the reason?

The sources of damage can be as follows. Cold water can mix in due to a damaged 3-way valve. The heat exchanger is clogged with dirt. It needs to be cleaned.

Water leaks regularly from the tap at the bottom of the boiler. The unit itself cannot be started. What do you need to do?

Apparently, there is a coolant discharge through the protection valve. This factor indicates an increase in pressure in the system. Also, the system filling valve may not be closed or it may be necessary to pump the expander tank.

I would like to know what kind of malfunction happens when the pressure increases continuously and the water discharge valve starts to work? The display shows the heating symbol every time the unit heats up. What could be?

There is a damage to the heating circuit temperature sensor. The coolant circulates poorly in the heating system.

Why did the Nova Florida gas boiler periodically turn off? For example, the other day the piezo ignition did not function at all. The maintenance of the device was done two weeks ago. What's the matter?

We can assume that functional disorders have appeared in the chimney device. You must complete the chimney check. Inoperability of the piezo igniter will mean the breakdown of its component in the event of a voltage drop or water has flowed into it.

Please help me figure out the chimney? Soon the second day, as there is a return thrust, while the smoke began to fall directly into the room. The chimney was made by myself. It is a steel pipe. There may be omissions somewhere.

The device performs well heating DHW, and when heating starts, the water immediately comes to a boil, and the unit goes into an accident. What could be faulty, and what is the way to fix it?

Probably, the circulation pump is faulty, the control board is damaged, the temperature sensor is broken. Debris can also clog the filter screen.

In the DHW cycle, the unit alternately begins to produce cold and hot water. I just can't understand why this is happening. How to set up water heating yourself?

There appears to be dirt in the heating system or the heat exchanger needs to be cleaned. It is also possible that the pressure control relay is broken or the circulation pump is faulty.

The main reason may be a faulty chimney design. There may be soot contamination that drastically decreases its performance. In addition, it is imperative to check the hood in the room.

The wall-mounted boiler Nova Florida CTN 24 was put into operation. The unit immediately raises the temperature above 96 degrees, but then stops working with overheating. Later, when it cools down, it starts to start on its own. What does it depend on?

The suspension of overheating operation indicates a circulation problem in the system. First of all, it is recommended to control the position of the valves on the radiators. They must be left open. Next, an inspection is carried out for clogging of the filter, and it is also recommended to make sure that the heat exchanger does not contain scale.

Completed the installation of this model in March. Presumably five months later, the device suddenly became very noisy. Please tell me what is the reason for the noise?

There may be scale in the heat exchanger. When the water is hard, limescale deposits will later be deposited in the radiator pipes.

We would like to connect the gas boiler Nova Florida Vela Compact in a country house. Could you tell me how to correctly put this device into operation?

For the correct start-up of this equipment, you need to do certain actions. Switch on the power supply to the device. We open the gas tap. Then we start up the gas burner equipment. Then adjust the desired temperature.

We need to perform maintenance. Instruct how to properly drain the water from the unit?

According to the instructions, this work is performed as follows. Disconnect the unit from the power supply. We close the gas valve. We open the automatic air vent. Fully open the drain valve. Then clean up any spilled liquid. If necessary, you can drain the water through the drain valve. This component is placed underneath the boiler.

Please tell us how to diagnose the operation of a 3-way valve? I think that he is not fully completing the opening. In the heating mode, it does not pump the extreme radiators, however, in the DHW mode, the pipe heats up to supply heating water under the boiler unit.

Of course, the 3-way valve should be inspected for poor stem travel in the intermediate state. We also recommend checking your heating system.

We use the floor-standing boiler Nova Florida Altair in the house. Until that day, he worked without question. Now, after five seconds after switching on, it began to go out.

It seems that it cannot pump liquid into the system. Tell me what is the problem? A possible factor for this malfunction may be the ignition electrode, which does not detect the flame, or a lack of circulation.

Recently there was a problem with this unit. While working, he began to whistle. I tried to restart - it succeeded, but no changes occurred. Tell me what is the reason for the whistle?

In many cases, a sharp whistle occurs when the pressure on the burner nozzles is incorrectly set. The set value must be checked and corrected if appropriate.

The boiler was recently filled with water and the unit began to operate with delays. For example, we set up any temperature, but the heating mode occurs only up to 26 degrees, and then the device turns off. Explain what happened?

If the electronic board unit was flooded with water, it can be assumed that it is defective. It must be rebooted using a direct disconnection of the device from the mains. Then re-run and test its functionality.

I have a Nova Florida Vela Compact 24 boiler installed. Now, at the start, the wick ignites for 9 seconds, but the main burner does not catch the fire, which is why the device starts to die out. How can I fix the breakdown?

Based on your words, the ignition unit has failed or there is a problem with the burner. Just in case, you need to see if the phasing is correct when connected to the electrical network.

I performed the installation of the same model myself in early August. After about three months, the hot water supply stopped working, although the heating circuit is functioning as expected. I tried to turn on hot water, but the device only displays the temperature, and does not even think about heating. Tell me what is the reason?

Most likely, the 3-way valve is faulty. It is required to change it.

Explain why the boiler is equipped with a protective thermal sensor?

A temperature sensor stops the flow of gas to the burner in case of overheating of the water in the primary system.

I need to flush and clean the main water heat exchanger. Tell me how to properly remove this component?

This element can be freely removed from the device using a conventional screwdriver. Here is the dismantling process. Drain the water from the device using the drain cock. Then it is required to empty the hot water supply system. Unscrew the screws securing the main heat exchanger and remove it from the frame.

We connected the unit of just such a model. After about a few months, the water pressure in it dropped. Often he throws it off and stops. That is, it does not hold pressure at all. What is the reason?

If the machine does not increase water pressure, it can be assumed that there is a leak from the make-up valve. When the shutdown occurs and the pressure drops to zero, the 3-way valve is damaged.

Tell me how to clean the cold water filter?

First, it is necessary to free the hot water supply system from water. Second, unscrew the flow sensor nut. Then we dismantle the sensor together with the filter from the socket. After removal, we clean from debris and dirt.

The unit had buzzed before starting up, but now the noise has increased. Initially, the sound disappeared quickly, but now it is heard longer. occurred for a short time, encountered this problem?

The appearance of an extraneous rumble can be explained by the presence of limescale inside the heat exchanger body, the heating of which proceeds unevenly due to the different wall thicknesses. The more the heat exchanger is clogged, the stronger the rumble, and, accordingly, the heat transfer decreases.

The appliance functions, but there is clearly no water circulating in the system. Return pump very hot. What could have happened?

Most likely, the mud filter is clogged or the tap is closed somewhere, which blocks the movement of the coolant. The circulation pump could still have broken.

Why can't the mountains warm up. water? The tap water is lukewarm. Help me understand what happened?

Troubleshooting can be done in several ways. For example, a malfunction of the DHW temperature sensor, it needs to be replaced. Perhaps the power adjustments for DHW heating are out of order.

From time to time we notice a break in the spark during ignition. The burner is clean, the chimney is in order, the draft is good. Where can I find the problem?

The device does not register a spark due to poor notification from the combustion control unit. It is necessary to inspect the wire from the ionization sensor to the electrode. You probably need to tighten it up. A defect in the sensor insulation may be present and must be replaced.

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After starting, a malfunction appeared. He does not want to turn on, he worked for two years, now the entire panel is on fire as if the boiler is turned on, when the self-diagnosis mode is on, then it clicks, turns off for miles and then turns on the entire panel again. It turned on once, but gives an error E10 water pressure, although the pressure in the system is 1.5 atm. Tell me what could be?

Bosch 6000 24 kW boiler, single-circuit with built-in three-way valve. Does not see the boiler sensor, gives an error. Tell me how to make sure that it does not give an error and work normally both for heating and for a boiler?

Installed the Arderia esr 2.13 ffcd boiler. If my coolant pressure drops a little in 2-3 days for a couple of divisions, can there be a reason for a three-way valve malfunction (there are no leaks from the radiators)?

The gas boiler Arderiya 2.35 is in operation. Tell me about the power reduction. I heard something about modulation, fan speed, etc. Is it possible to really reduce the power?

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We installed and connected a Buderus Logano G234-WS-44 kW boiler, Logomatic 4211 automatic equipment. Heating on cylinders without hot water supply, nozzles for reduced gas were also replaced. We survived the winter, the cylinders were replaced, all without problems. Then in the spring, when the temperature outside is + 16 + 18, the boiler began to turn off for a long time and, when turned on, began to display a burner error on the screen and a red button lamp on the front wall lit up. We pressed the button, turned on the power again and everything worked. It happened several times, then for the summer they turned off the boiler completely, what could be the malfunction?

In a single-circuit Buderus 072, is the BKN coil circuit heated by the same heat exchanger as for heating or the same as on the 2-circuit one that is on the DHW?

Tell me, for Vaillant wall-mounted gas boilers, are there real / actual differences for the better in the new generation of turboTEC plus VU / 5-5 compared to / 3-5?

Malfunction in the operation of the boiler, the green LED (power supply) flashes, the instructions say that the thermal protection has worked, the green indicator flashes, even if nothing is connected to the board. How to fix? I checked all SMD resistors and transistors, everything is in order.

A double-circuit gas boiler Daewoo Gasboiler with an electronic panel is in operation. When the DHW is turned on, the heating is heated, the operating mode is summer. I took off the three-way valve, there is no dirt and production. It seems that the board does not control the three-way valve. How to check?

The wall-mounted boiler Electrolux Basic Xi \u200b\u200bis installed and connected. A malfunction began that the boiler stopped seeing the flame and turned off the gas supply after 7-8 seconds. And after 3 attempts, it gave an E1 error. How can you fix it?

Malfunction of the Koreastar boiler. Heating works fine, hot water is intermittent, when the hot water tap is turned on, cold water comes first, then boiling water. After a few seconds, cool, then boiling water again. What could be the problem?

Malfunction of the ferroli domiproject 24 boiler - I adjust 60-70 degrees, it goes to minimum combustion, does not turn on, does not turn off. Restarting is unstable. No pattern is revealed. What to do?

In operation, the gas boiler Junkers euroline, when hot water is turned on, ignites the gas, then goes out and so on several times. If you turn it on while the heating is running, then the water heating turns on immediately. Can you please tell me what could be the problem?

Tell me about the adjustments of the gas boiler Navien Ace 16 turbo remote control v1.3. The fan run-out cannot be set. I bet 30 seconds, but still 2 minutes. twists.

Malfunction of the boiler Oasis ZRT18. The unit starts up, the gas is ignited, then it goes out. It lights up again, goes out (three times it happens). Then it flares up and works fine. It does not give any error. What is the reason?

Malfunction of the gas boiler Senor Duval - the water pressure sensor shows 0.0, the indicator flashes red, hot water does not heat up, but the water pressure in the apartment is good. How do I fix the problem?

Where should the condensate drain be installed in the coaxial flue? Boiler wh1d with a closed combustion chamber, located at a distance of 1m from the wall.

An Ariston gas wall-mounted boiler was installed and connected, which does not hold pressure at all: during the cooling of heated water, the pressure drops to zero, although water is regularly drawn. What's with the pressure?

The gas wall-hung boiler Nova Florida Vela CTFS 24 AF cannot start. If we press the on / off button, the burner functions. If you release the button, the unit dies out. Explain the cause of the problem? The thermoelectric converter or gas valve may be faulty. A decrease in gas pressure on the inlet pipeline may also occur. Sometimes there is a lack of voltage on the control board. There was a problem recently. The inclusion is very poor. The pilot burner ignites, but there is no flame on the main gas burner equipment. Can anyone please explain what is the reason? Most likely, a malfunction of the ignition mechanism. You need to service the boiler and clean the ignition device. Because of what the Nova Florida Vela Compact double-circuit boiler does not stop working after the required temperature is established? It heats up to 85C, then it crashes. During the restart operation, everything is repeated. Presumably, the electronic board is not in order, the temperature sensor is broken, the overheating protection button has a problem. It cannot be ruled out that an error occurred in the automatic adjustments. Please tell me why it is not possible to raise the temperature of the coolant over 70 C? We need to increase the temperature, and the screen shows that this is the maximum. How to adjust heating? If the device cannot raise the temperature in the heating circuit, the following reasons are possible. In the specified settings, a limit is set on the highest heating temperature not higher than 70C. A decrease in the draft speed in the chimney is observed. The Nova Florida Delfis wall-mounted boiler performs unstable functions in the mode of heating the DHW system. Hot and cold water can alternate from the tap. Tell me what is the reason? The sources of damage can be as follows. Cold water can mix in due to a damaged 3-way valve. The heat exchanger is clogged with dirt. Cleaning is required. Water leaks regularly from the tap at the bottom of the boiler. The unit itself cannot be started. What do you need to do? Apparently, there is a coolant discharge through the protection valve. This factor indicates an increase in pressure in the system. Also, the system filling valve may not be closed or it may be necessary to pump the expander tank. I would like to know what kind of malfunction occurs when the pressure continuously increases and the water discharge valve starts to work? The display shows the heating symbol every time the unit heats up. What could be? There is a damage to the heating circuit temperature sensor. The heat carrier does not circulate well in the heating system. Why did the Nova Florida gas boiler periodically turn off? For example, the other day the piezo ignition did not function at all. The maintenance of the device was done two weeks ago. What's the matter? We can assume that functional disorders have appeared in the chimney device. You must complete the chimney check. Inoperability of the piezo igniter will mean the breakdown of its component in the event of a voltage drop or water has flowed into it. Please help me figure out the chimney? Soon the second day, as there is a return thrust, while the smoke began to fall directly into the room. The chimney was made by myself. It is a steel pipe. There may be omissions somewhere. The device performs well DHW heating, and when heating starts, the water immediately comes to a boil, and the unit goes into an accident. What could be faulty, and what is the way to fix it? Probably, the circulation pump is faulty, the control board is damaged, the temperature sensor is broken. Debris can also clog the filter screen. In the DHW cycle, the unit alternately starts to produce cold and hot water. I just can't understand why this is happening. How to set up water heating yourself? There seems to be dirt in the heating system or the heat exchanger needs to be cleaned. It is also possible that the pressure control relay is broken or the circulation pump is faulty. The main reason may be a faulty chimney design. There may be soot contamination that drastically decreases its performance. In addition, it is imperative to check the hood in the room. The wall-mounted boiler Nova Florida CTN 24 was put into operation. The unit immediately raises the temperature above 96 degrees, but then stops working with overheating. Later, when it cools down, it starts to start on its own. What does it depend on? The suspension of overheating operation indicates a circulation problem in the system. First of all, it is recommended to control the position of the valves on the radiators. They must be left open. Next, an inspection is carried out for clogging of the filter, and it is also recommended to make sure that the heat exchanger does not contain scale. Completed the installation of this model in March. Presumably five months later, the device suddenly became very noisy. Please tell me what is the reason for the noise? There may be scale in the heat exchanger. When the water is hard, limescale will build up in the radiator pipes. We would like to connect the gas boiler Nova Florida Vela Compact in a country house. Could you tell me how to correctly put this device into operation? For proper start-up of this equipment, you need to do certain actions. Switch on the power supply to the device. We open the gas tap. Then we start the gas burner equipment. Then adjust the desired temperature. We need to perform maintenance. Instruct how to properly drain the water from the unit? According to the instructions, this work is performed as follows. Disconnect the unit from the power supply. We close the gas valve. We open the automatic air vent. Open the drain valve completely. Then clean up any spilled liquid. If necessary, you can drain the water through the drain valve. This component is placed at the bottom of the boiler. Please tell us how to diagnose the operation of a 3-way valve? I think that he is not fully completing the opening. In the heating mode, it does not pump the extreme radiators, however, in the DHW mode, the pipe heats up for the flow of heating water under the boiler unit. Of course, the 3-way valve should be inspected for poor stem travel in the intermediate state. We also recommend checking your heating system. We use the floor-standing boiler Nova Florida Altair in the house. Until that day, he worked without question. Now, after five seconds after switching on, it began to go out. It seems that it cannot pump liquid into the system. Tell me what is the problem? A possible factor for this malfunction may be the ignition electrode, which does not detect the flame, or a lack of circulation. Recently there was a problem with this unit. While working, he began to whistle. I tried to restart - it succeeded, but no changes happened. Tell me what is the reason for the whistle? In many cases, a sharp whistle occurs when the pressure on the burner nozzles is incorrectly set. The set value must be checked and corrected if appropriate. The boiler was recently filled with water and the unit began to operate with delays. For example, we set up any temperature, but the heating mode occurs only up to 26 degrees, and then the device turns off. Explain what happened? If the electronic board unit was flooded with water, it can be assumed that it is defective. It must be rebooted using the direct disconnection of the device from the mains. Then re-run and test its functionality. I have a Nova Florida Vela Compact 24 boiler installed. Now, at the start, the wick ignites for 9 seconds, but the main burner does not catch the fire, which is why the device starts to die out. How can I fix the breakdown? Based on your words, the ignition unit is out of order or there is a problem with the burner. Just in case, you need to see if the phasing is correct when connected to the electrical network. I performed the installation of the same model myself at the beginning of August. After about three months, the hot water supply stopped working, although the heating circuit is functioning as expected. I tried to turn on hot water, but the device only displays the temperature, and does not even think about heating. Tell me what is the reason? Most likely, the 3-way valve is faulty. It is required to change it. Explain why the boiler is equipped with a safety temperature sensor? A temperature sensor stops the flow of gas to the burner in case of overheating of the water in the primary system. I need to flush and clean the main water heat exchanger. Tell me how to properly remove this component? This element can be freely removed from the device using a conventional screwdriver. Here is the dismantling process. Drain the water from the device using the drain cock. Then it is required to empty the hot water supply system. Unscrew the screws securing the main heat exchanger and remove it from the frame. We connected the unit of just such a model. After about a few months, the water pressure in it dropped. Often he throws it off and stops. That is, it does not hold pressure at all. What is the reason? If the machine does not increase the water pressure, it can be assumed that there is a leak from the make-up valve. When the shutdown occurs and the pressure drops to zero, the 3-way valve is damaged. Tell me how to clean the cold water filter? First, it is necessary to free the hot water supply system from water. Second, unscrew the flow sensor nut. Then we dismantle the sensor together with the filter from the socket. After removal, we clean from debris and dirt. The unit had a humming sound before starting, but now the noise has increased. Initially, the sound quickly disappeared, but now it is heard longer. occurred for a short time, did you encounter this problem? The appearance of an extraneous rumble can be explained by the presence of limescale inside the body of the heat exchanger, the heating of which proceeds unevenly due to the different thickness of the walls. The more the heat exchanger is clogged, the stronger the rumble, and, accordingly, the heat transfer decreases. The appliance functions, but there is clearly no water circulating in the system. Return pump very hot. What could have happened? Most likely, the mud filter is clogged or the tap is closed somewhere, which blocks the movement of the coolant. The circulation pump could still have broken. Why can't the mountains warm up. water? The tap water is lukewarm. Help me understand what happened? Troubleshooting can be done in several ways. For example, a malfunction of the DHW temperature sensor, it needs to be replaced. Perhaps the power adjustments for DHW heating are out of order. From time to time we notice a break in the spark during ignition. The burner is clean, the chimney is in order, the draft is good. Where can I find the problem?

The device does not register a spark due to poor notification from the combustion control unit. It is necessary to inspect the wire from the ionization sensor to the electrode. You probably need to tighten it up. A defect in the sensor insulation may be present and must be replaced.

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Heating system control. Installation. Connection. Transfer to another type of gas. Adjustment devices and protection devices.

Features. Installation and assembly. Automation components.

Technical specifications. Installation. Adjustment and check. Maintenance.

Regulation and protection. Installation and assembly. Pressure setting. Maintenance.

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After starting a malfunction appeared. He does not want to turn on, he worked for two years, now the entire panel is on fire as if the boiler is turned on, when the self-diagnosis mode is on, then it clicks, turns off for miles and then turns on the entire panel again. It turned on once, but it gives an error E10 water pressure, although the pressure in the system is 1.5 atm. Tell me what could be?

We installed and connected a Baxi Fourtech 24 F boiler. What cold water pressure is allowed at the inlet to the DHW unit?

Bosch 6000 boiler 24 kW, single-circuit with a built-in three-way valve. Does not see the boiler sensor, gives an error. Tell me how to make sure that it does not give an error and work normally both for heating and for a boiler?

If you disable the DHW flow sensor, can it be possible to reprogram it into a single-circuit device through the L3 menu?

Installed the Arderia esr 2.13 ffcd boiler. If my coolant pressure drops a little in 2-3 days for a couple of divisions, can there be a reason for a three-way valve malfunction (there are no leaks from the radiators)?

The gas boiler Arderia 2.35 is in operation. Tell me about the power reduction. I heard something about modulation, fan speed and so on. Is it possible to really reduce the power?

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We installed and connected a Buderus Logano G234-WS-44 kW boiler, Logomatic 4211 automatic equipment. Heating on cylinders without hot water supply, nozzles for reduced gas were also replaced. We survived the winter, the cylinders were replaced, all without problems. Then in the spring, when the temperature outside is + 16 + 18, the boiler began to turn off for a long time and, when turned on, began to display a burner error on the screen and a red button lamp on the front wall lit up. We pressed the button, turned on the power again and everything worked. It happened several times, then for the summer they turned off the boiler completely, what could be the malfunction?

In a single-circuit Buderus 072, is the BKN coil circuit heated by the same heat exchanger as for heating or the same as on the 2-circuit one that is on the DHW?

Tell me, for Vaillant wall-mounted gas boilers, are there real / actual differences for the better in the new generation turboTEC plus VU / 5-5 compared to / 3-5?

Malfunction in the operation of the boiler, the green LED (power supply) is flashing, the instructions say that the thermal protection has worked, the green indicator flashes, even if nothing is connected to the board. How to fix? I checked all SMD resistors and transistors, everything is in order.

A double-circuit gas boiler Daewoo Gasboiler with an electronic panel is in operation. When the DHW is turned on, the heating is heated, the operating mode is summer. I took off the three-way valve, there is no dirt and production. It seems that the board does not control the three-way valve. How to check?

Installed and connected wall-mounted boiler Electrolux Basic Xi. A malfunction began that the boiler stopped seeing the flame and turned off the gas supply after 7-8 seconds. And after 3 attempts, it gave an E1 error. How can you fix it?

Malfunction of the Koreastar boiler. Heating works fine, hot water is intermittent, when the hot water tap is turned on, cold water comes first, then boiling water. After a few seconds, cool, then boiling water again. What could be the problem?

Malfunction of the ferroli domiproject 24 boiler - I adjust 60-70 degrees, it goes to minimum combustion, does not turn on, does not turn off. Restarting is unstable. No pattern is revealed. What to do?

In operation, the gas boiler Junkers euroline, when hot water is turned on, ignites the gas, then goes out and so on several times. If you turn it on while the heating is running, then the water heating turns on immediately. Can you please tell me what could be the problem?

Tell me about the adjustments of the gas boiler Navien Ace 16 turbo remote control v1.3. Cannot set the fan run-down. I bet 30 seconds, but still 2 minutes. twists.

Malfunction of the boiler Oasis ZRT18. The unit starts up, the gas is ignited, then it goes out. Again it lights up and goes out (three times it happens). Then it flares up and works fine. It does not give any error. What is the reason?

Malfunction of the gas boiler Senor Duval - the water pressure sensor shows 0.0, the indicator flashes red, hot water is not heated, but the water pressure in the apartment is good. How can I fix the problem?

Where should the condensate drain be installed in the coaxial flue? The wh2d boiler with a closed combustion chamber is located 1m from the wall.

The problem of starting the Westen Pulsar D boiler. Piezo ignition works, but there is no flame, after a crackling error E01. Rearranged the fork in places.

The Novella floor-standing gas boiler has blocked - the green lights on the panel are on, and nothing else happens. How to fix?

An Ariston gas wall-mounted boiler was installed and connected, which does not hold pressure at all: during the cooling of heated water, the pressure drops to zero, although water is regularly drawn. What's with the pressure?

Malfunction of the metropolis dgt 25 bf boiler. The hot water supply stopped working, the heating is working, it does not give an error. What do you advise?

Please tell me how to solve the problem. The Solly Standard boiler, with any attempt to turn it on or hot water, gives a GS error.

The Wolf boiler is in operation. Recently, he began to behave strangely: in the pause between starts, he turns on the burner five times for one second, and 70 degrees jumps out on the display. Where to look for a malfunction?

ACV Wester Line works very unstable: it often goes into an accident, at startup it emits a characteristic knock and stalls, and at times everything is fine. The unit is almost new, what's wrong with it?

Gas boiler Demrad stopped supplying gas to the burner. The piezo element clicks, but there is no ignition. Everything is in order with the gas stove, there is gas. What is the reason?

Kiturami world boiler malfunction, stops periodically. I wipe the flame sensor and the apparatus works well for a while, but soon everything repeats itself. He also began to smoke heavily. Maybe it's a short chimney, and you need to lengthen it?

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Errors of boilers Nike Star, Eolo Star / Mini, Mythos. Boiler malfunctions with the possibility of automatic unlocking.

My boiler in winter mode systematically raises the temperature to 80 degrees. He summoned the master three times. He said that this is for many imergaz models, and offered to install a programmer, but not the fact that it would help. Tell me how to solve this problem and will this programmer help?

Model 11.6; 17.4; 23.2; 29.3 kW. Specifications. Control elements of the automation unit. Installation and maintenance. Malfunctions and their elimination.

The gas boiler AOGV was installed and put into operation. Hot water dispensing problem. The heat exchanger has been flushed. Less than a month has passed, and again the water does not flow. We put the filter on the water, but time passed, and again hot water does not flow. What could be the breakdown?

Assembly and installation. Start-up and adjustment. Malfunctions and ways to eliminate them.

Technical specifications. Installation and connections. Startup and work order. Automation adjustments.

Malfunction of the boiler Neva lux 7023. With a frequency of 2 times a month, it gives an error E7. But after reboot it still works. Now it gives error E6. It will work for 15 minutes, and then it turns off. What could it be?

Construction and automation unit. Firing up procedure. Malfunctions and repairs.

Tell me if the Atem Zhitomir boiler goes out due to the weak gas pressure, it clicks and goes out. What is the problem? Is it possible to turn off the automation for a while and how?

Gas boiler Lemax KSG-12.5 Premium was installed. After turning off the main burner, a click occurs after a couple of minutes, what is the reason, tell me?

A gas boiler KS-G was installed and connected, for 250 sq. m. When firing up, it does not turn off, the temperature rises, if I am not mistaken, the automatic Arbat 1. The flame is not regulated - too large. What to do?

I installed the Mayak gas boiler and connected it. It works fine. But the reason is this. When he works on a unit, he beeps strongly, if the regulator is turned 2-7, the squeak disappears. Tell me what could be?

We installed and connected a Danko gas boiler with Kare automatics, it works fine on the igniter, but it is worth adding the power on the burner, it completely dies out, yesterday it faded out for 5 minutes, today it works for 20 minutes and completely goes out. Who faced this problem?

The boiler gazeko 18 is in operation. When hot water is turned on, the pressure in the system drops after make-up, the pressure reaches 3 bar. Have to dump. What's the matter, how to fix it?

Water often boils in the boiler, while it goes into an overheating accident. The heat exchanger was recently washed, the system is not clogged. What's the matter?

Malfunction of the Rinnai 167 RMF boiler. Recently started showing error 14. How can you fix the breakage?

The Celtic ds boiler heats up to 45 degrees and costs the whole day it does not turn off and does not heat up the batteries, sometimes it shows an a3 error. How can this problem be resolved?

The hot water pressure in the Mora Top boiler has dropped. What is the reason?

Seoul wall mounted gas boiler stopped turning on due to no ignition error. How can it be eliminated? What exactly is out of order?

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Review of the gas wall-mounted boiler Nova Florida Vela Compact

Two-circuit gas wall-mounted boiler Nova Florida Vela Compact with a sealed combustion chamber, forced smoke removal and stopped circulation is designed for heating and hot water supply for private and country houses.

Specifications

Figure: 1 - Hydraulic diagram model CTFS

1. DHW temperature sensor, 2. Modulating gas valve, 3. Heating circuit temperature sensor, 4. Burner nozzles, 5. Burner, 6. Ignition / flame detection electrode, 7. Safety thermostat, 8. Thermal heat exchanger, 9. Sealed combustion chamber, 10. Exhaust fan, 11. Flue gas pressure control point, 12. Air supply / flue gas pressure difference safety switch, 13. Air supply / flue gas coaxial pipe, 14. Combustion air pressure control point, 15. Air release valve, 16. Filter at the inlet of cold sanitary water, 17. Expansion tank, 18. Circulation pump, 19. Make-up tap, 20. Minimum pressure switch in the heating circuit, 21. Safety valve 3 bar, 22. DHW flow limiter - 10 liters per minute , 23. Sanitary water flow sensor, M - Heating system supply, C - DHW outlet, G - Gas inlet, F - Domestic cold water inlet, R - Heating system return

The double-circuit gas wall-mounted boiler Nova Florida Vela Compact is equipped with a built-in atmospheric gas burner and is available in the following versions:

CTN 24 AF: open combustion chamber, natural exhaust of combustion products, electronic ignition, flow-through bithermal heat exchanger for hot water supply; - CTFS 24 AF: closed combustion chamber, forced discharge of combustion products, electronic ignition, flow-through bithermal heat exchanger for hot water supply. Both models are equipped with an ionisation flame monitor.

Performance characteristics of boilers Nova Florida Vela Compact

Nominal heat input (Qn) kW - 25.5 / 24.5 Nominal heat input (Pn) kW - 23.7 / 22.2 Reduced power input (Qr) kW - 12.5 / 12 Reduced useful power (Pr) kW - 11.2 / 10.8 Efficiency at 100% load% - 93 / 90.6 Efficiency at 30% load% - 90.2 / 90 Heating temperature regulation range C - 35 - 78 Maximum heating circuit temperature C - 78 + 5 Maximum / minimum system pressure (PMS) bar - 3 - 0 , 5 Nominal heat output in DHW mode (Qns) kW - 23.7 / 22.2 Reduced heat output in DHW mode (Qrs) kW - 12.5 / 12 DHW output (D) at t 30K l / min - 11.4 / 10.8 Maximum / minimum pressure in DHW circuit bar - 8 - 0.5 Range of regulation of DHW temperature C - 35-50 Maximum DHW temperature C - 58 Height mm - 700 Width mm - 400 Depth mm - 250 Weight kg - 27.5 / 24.85 Gas connection - G1 / 2 Heating connection - G3 / 4 DHW connection - G1 / 2 NOx emission class - 3/2 Voltage power supply V - 230 Frequency in the power network Hz - 50 Power consumption W - 140/80 Electrical protection class - IPX4D

Constructional characteristics of the boiler Nova Florida Vela Compact

Copper bithermal heat exchanger with high efficiency. - Heating circuit circulation pump with built-in air vent. - Expansion tank with a capacity of 6 liters. - Minimum pressure switch in the heating circuit. - Flow sensor for DHW priority. - DHW flow limiter at 10 l / min. - Make-up tap and drain tap. - Temperature sensors of the heating circuit and DHW. - Safety thermostat for temperature limit value. - Control panel with IPX4D electrical protection class. - Built-in electronic board for safety and flame modulation. - Electronic ignition and ionization control of the presence of a flame. - Differential pressure switch for combustion products (CTFS). - Flue gas thermostat (CTN). - Modulating double shut-off gas valve.

User control panel

Combined operating mode switch and heating circuit temperature regulator (control range 35/78 ° C). Combined release switch and DHW temperature controller (control range 35/58 ° C). Heating circuit pressure gauge.

Status light indication:

Voltage presence; - heating demand; - presence of a flame; - burner blocking; - gas valve malfunction; - burner blocking due to overtemperature; - blocking of the burner due to actuation of the differential pressure switch of the combustion products (CTFS); - burner blocking due to actuation of the flue gas thermostat (CTN); - insufficient pressure of the heating agent in the heating circuit; - damage to temperature sensors.

Operating (operational) characteristics of the boilers Nova Florida Vela Compact

DHW function priority. - Electronic modulation of the flame in heating mode with a pre-calculated flame rate of rise. - Electronic flame modulation in DHW mode. - Boiler anti-freeze function (On 5 ° C, Off: 30 ° C or after 15 minutes of operation). - Flame spread function during ignition (CTFS). - Time interval between burner starts (24 24 0 seconds at a flow temperature\u003e 40 ° C). - Pump post-circulation function in heating and anti-freezing modes (30 seconds). - Function of post-circulation of the pump in the DHW circuit (6 seconds in winter mode, 1 second in summer mode). - Post-ventilation function in DHW mode and only when the unit is in summer mode (10 seconds - CTFS). - Protective ventilation function after boiler shutdown due to faulty temperature sensors (1 minute - CTFS). - Anti-blocking function of the circulation pump (30 seconds of pump operation after every 24 hours of machine inactivity).

Nova Florida Vela Compact double-circuit gas wall-mounted boiler malfunctions and elimination method

1) The boiler is locked out and the LED lights up red

a) The burner does not turn on

No gas - Check the gas pressure and the condition of the gas shut-off and safety valves. - The gas valve is disconnected - Connect it. - Gas valve defective - Replace it. - Control board defective - Replace it.

b) The burner does not turn on: no spark

Ignition / flame detection electrode defective - Replace electrode. - The control board does not ignite: it is defective - Replace the board.

c) The burner turns on for a few seconds and turns off

The control board does not detect the presence of a flame: phase and neutral are reversed - Check that the phase and neutral are connected correctly. - Ignition / flame detection wire disconnected / damaged - Connect or replace wire. - Ignition / flame detection electrode defective - Replace electrode. - The control board does not detect the presence of a flame: it is defective - Replace the board. - The ignition pressure is too low - Increase it. - The minimum heat output is set incorrectly - Check the burner settings. The exit from this state is performed by turning the knob to the “Unlock” position.

2) The Nova Florida Vela Compact boiler is blocked and the LED lights up yellow

a) Fan pressure switch (CTFS) does not work

Pressure switch defective - Check relay: replace if defective. - Silicone tubes disconnected or damaged - Connect or replace silicone tubes. - There is insufficient air flow or flue gas evacuation for combustion - Check the air supply and flue gas pipes: clean them or replace if necessary. - Fan defective - Replace it. - Control board defective - Replace it.

b) Flue gas thermostat tripped (CTN)

Incorrect operation of the air supply / flue gas venting system - Check the flue, ventilation ducts and grilles. - Flue gas thermostat defective - Replace it. The exit from this state is performed by turning the knob to the “Unlock” position.

3) The boiler is blocked and the LED is red

a) Safety thermostat tripped

There is no circulation in the heating system: the system pipes are clogged, the thermostatic valves or radiator taps are closed - Check the condition of the heating system. - The circulation pump is blocked or defective - Check the pump. The boiler automatically returns to working condition after 10 seconds. or by turning the knob to the “Unlock” position.

4) LED flashes red

a) The temperature in the heating circuit has exceeded 85 ° C

Insufficient circulation in the heating system - Check the circulation pump and the condition of the heating system. - The boiler automatically returns to operating condition after the reasons for the blockage have been eliminated.

5) LED flashes yellow

a) Insufficient pressure in the heating system

Leaks in the heating system - Check the condition of the heating system. - Disconnected pressure switch - Connect relay. - Defective pressure switch - Replace it. The boiler automatically returns to operating condition after the reasons for the blockage have been eliminated.

6) LED flashes yellow and red

Heating circuit temperature sensor disconnected - Connect it. - Defective heating circuit temperature sensor - Replace it. The Nova Florida Vela Compact boiler automatically returns to working condition after the causes of the blockage have been eliminated.

7) LED flashes green and red

a) The heating circuit temperature sensor does not work

DHW temperature sensor disconnected - Connect it. - Defective DHW temperature sensor - Replace it. The unit automatically returns to operating condition after the causes of blockage have been eliminated.

8) The DHW circuit of the boiler is not working

a) The flow sensor does not work

Insufficient pressure or flow in the DHW circuit - Check the DHW system and flow sensor filter. - Flow sensor defective or disconnected - Replace or reconnect it. - The flow sensor relay is stuck - Replace it.

LED flashes green

a) Gas valve modulator does not work

Loose or missing connection between control board and gas valve - Check the gas valve connections. - The gas valve modulator coil is defective - Replace the gas valve modulator coil.

The unit automatically returns to operating condition after the causes of blockage have been eliminated.

Errors of gas boilers Ferroli

Errors of gas boilers Ariston

Errors of Baksi gas boilers

Operation of Daewoo boilers

Errors of gas boilers Beretta

Errors of gas boilers Buderus

Errors of gas boilers Vilant

Malfunctions and repairs Navien

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Overview of the gas boiler KSG Ochag

Checks and adjustments of the boiler Nova Florida Vela Compact

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Adjustments of the gas boiler Nova Florida Vela Compact

Conversion from natural gas to liquefied gas

Make sure that the wall-mounted boiler is disconnected from the power supply; - remove the main burner; - remove the nozzles from the main burner and replace them with nozzles of the required diameter, depending on the type of new gas. - it is imperative to install new copper gaskets; - refit the main burner; - set the MET-GPL jumper to the GPL position on the boiler electronic board; - adjust the gas valve.

Gas valve adjustment siemens vgu56.a1109

Fig. 5. Siemens gas valve adjustment

Using a small screwdriver, unscrew the protective screw in the gas inlet pressure measurement connection, connect a micromanometer to the connection and check the gas pressure at the valve inlet (in the gas line). - Then, in the same way, connect the micromanometer to the gas pressure measuring point at the valve outlet. - Switch on the wall-mounted boiler Nova Florida Vela Compact to maximum heating power by opening a large DHW draw-off and setting the DHW temperature controller to maximum. - After removing the yellow plastic protective cap A, turn screw C counterclockwise to decrease the pressure and clockwise to increase the pressure. - After setting the maximum pressure, remove the connector from the modulator reel in order to set the boiler to the minimum heat output. - Adjust the minimum pressure with the inner screw B of the gas valve (hold the outer screw C stationary). - Put the connector on the modulator bobbin and check the correctness and noiselessness of the burner ignition; - Check for gas leaks; - Replace the protective plastic cap A; - After completing the above operations, fill in the tag indicating the set parameters and attach it to the machine. Gas boiler checks Nova Florida Vela Compact

Checking the functionality of temperature sensors

The electronics checks the correct functioning of the NTC sensors connected to the boiler control board. If the temperature perceived by the sensor is outside the correct temperature range recorded by the sensor, then this is perceived as a malfunction of the sensor. - Violation of the heating circuit temperature sensor in heating mode or in the anti-freeze function: the burner turns off immediately; the pump stops after completing a post-circulation cycle; the fan runs for 1 minute. Any requests for heating or anti-freeze function are ignored. - Malfunction of the heating circuit temperature sensor when the wall-mounted boiler Nova Florida Vela Compact is either in standby mode, or in summer mode, or in winter mode, or in the absence of any requests: the boiler performs the post-circulation function (1 second in winter mode, 30 seconds in summer) and post-ventilation function for 1 minute. - Violation of the heating circuit temperature sensor in DHW mode: the violation is only signaled, but DHW continues to be provided. - Violation of the DHW temperature sensor when the DHW request is fulfilled: the burner turns off immediately; the pump performs post-circulation for 1 second in summer and 30 seconds in winter. - The fan runs for 1 minute (duration of the post-ventilation function after blocking or malfunction of the temperature sensor). Any DHW demand is ignored while the heating and anti-freeze functions are active.

General check of the gas valve modulator

The electronics check the function of the proportional modulator of the gas valve. A malfunction is detected if the modulator is electrically disconnected or has a short circuit. In the event of a malfunction of the modulator, all boiler functions are retained, but at the minimum heat output. The modulator malfunction signal disappears when the electrical parameters of the modulator return to standard limits.

Automatic flame check

A flame detection device is always active and monitors the presence of a flame continuously. When a request is received to turn on the boiler, the state of the contacts of the differential air pressure switch (model CTFS 24 AF) is checked and the fan is turned on. When the initial state of the contacts of the differential air pressure switch (boiler Nova Florida Vela Compact CTFS 24 AF) or the flue gas thermostat (model CTFN 24) is correct, the device maintains a TW delay (1.5 seconds), after which it switches on the gas valve and ignition transformer. If a flame is detected, the gas valve remains open.

Ignition development

After a delay, burner ignition is initialized. The current in the modulator coil rises within 10 seconds: from the value corresponding to the minimum gas pressure to 65% of the maximum value for a device with an open combustion chamber and 80% of the maximum value for a turbo boiler). Actually, the ignition procedure is completed 1 second after the presence of a flame is determined. Now, only in devices with a closed combustion chamber, the process of flame development continues, which consists in the fact that a current increasing to a maximum is supplied to the modulator for two seconds. After the full development of the flame, the gas boiler Nova Florida Vela Compact begins to work in normal mode. The ignition transformer turns off 2 seconds after detecting the presence of a flame or at the end of the safe ignition period. If in cold conditions when trying to ignite the flame does not occur, repeated attempts to ignite are automatically carried out (up to 5 attempts for a turbo boiler and 2 attempts for a chimney). Between ignition attempts, the combustion chamber is ventilated (10 seconds for a turbo boiler and 35 seconds for a chimney). If the flame disappears, the flame detection device tries to ignite again. The flame detection device goes into lockout state when no flame was detected during the last ignition attempt during the TS ignition period (10 seconds) or if an extraneous flame is detected with the gas valve off for more than 1 minute. To unlock it is necessary to wait a few seconds, turn the corresponding regulator to the unlocked position, wait a while and return the regulator to the desired position.

Flue gas thermostat (only Nova Florida Vela Compact CTN 24 AF boiler)

The flue gas thermostat contacts are normally closed. When the exit of flue gases is difficult, the smoke begins to flow around the smoke trap from the outside and the temperature of the smoke trap (on which the thermostat is installed) rises, as a result of which the thermostat triggers open the contacts of the latter. When the contacts open, the gas valve is de-energized and 2 seconds after the contacts open, the electronic board is blocked (if the thermostat contacts are closed within 2 seconds, the electronic board will continue to function normally). After blocking, the pump performs post-circulation. If, within 10 seconds after blocking, the thermostat contacts close, then the Nova Florida Vela Compact boiler can restart. The ten minute waiting period can be reset to zero by unlocking the appliance with the DHW regulator. Start of ignition: if, within 2 seconds after the start of ignition, the contacts of the flue gas thermostat open, the board is blocked and the pump is recirculated. After 10 minutes of interlock due to open flue gas thermostat (waiting period for flue gas thermostat), the board can automatically restart if the flue thermostat contacts are closed. The ten minute waiting period can be reset to zero by unblocking the boiler using the DHW regulator. To unlock it is necessary to wait about 5 seconds, turn the corresponding regulator to the unlocked position, wait a while and return the regulator to the desired position.

Differential air pressure switch (only boiler model Nova Florida Vela Compact CTFS 24)

The air pressure switch is connected directly to the electronic board and its contacts are normally open. Before the fan is switched on, the contacts of the air pressure switch are in the N.O. state. (normally open), and close after the fan is turned on. When the air pressure switch contacts are open, the gas valve cannot turn on. If, 10 seconds after turning on the exhaust fan, the air pressure switch contacts are still open, a blocking signal is generated, which does not require the unlocking procedure. The same blocking signal, which does not require the unblocking procedure, is also generated if the contacts of the air pressure switch are in the wrong position in standby mode or during boiler operation. If the contacts of the air pressure switch are in the wrong position for more than 1 minute, then the boiler goes into a permanent blocking state, the exit from which requires the unblocking procedure. Differential relay pressure: 45/35 Pa Pmax \u003d 1500 Pa

Safety thermostat

The safety thermostat is located on the bithermal heat exchanger and its contacts are normally closed. When the temperature is detected above 95 ° C, the contacts open, thereby interrupting the power supply to the gas valve and turning off the burner. If the safety thermostat is triggered when the gas valve is running, the boiler will shut down. Activation of the safety thermostat when the gas valve is not working (between requests or when the boiler is in standby mode) leads to a malfunction signal (LED 2 lights up red). This situation does not require an unlocking procedure. Burner start-up will be delayed until the safety thermostat contacts are closed. The safety thermostat with normally closed contacts switches the voltage 20Vdc. Response temperature 95 ° C. Heating circuit temperature sensor: NTC 10k Ohm at 25 ° C.

DHW temperature sensor: NTC 10k Ohm at 25 ° C.

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Heating systems for country and country houses. Boilers, gas water heaters, water heaters - Repair, service, operation. Recommendations for assembly and installation.

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Operation of boilers Nova Florida Vela Compact

Boiler start-up Nova Florida Vela Compact

Before starting up the Nova Florida Vela Compact boiler, make sure that:

The flue gas duct and the protruding part of the pipe are installed according to the instructions: when the device is switched on, there should be no leakage of combustion products through the seals; - the unit is connected to a 230 V and 50 Hz power supply network; - the system is properly filled with coolant (pressure on the manometer - 1-1.3 bar); - possible shut-off valves in the heating pipes are open; - the gas in the network corresponds to the gas to which the boiler is adjusted at the factory: otherwise, change the boiler to another gas. - the gas supply valve is open; - no gas leakage; - the external general switch installed in front of the boiler is on; - the boiler safety valve 3 bar is not blocked; - no coolant leaks; - the pump is not blocked.

Fig. 6 - Scheme of the control board

0SCHEMOD11: PCB M3-M11: Line contacts, TA M13: Telemetry control interface M2-M12: Accessory contacts E: Ignition and flame detection electrode P: Circulation pump V: Fan (only for TFS model) TF: Flue gas thermostat (only for TN model) PV: Fan pressure switch (only for TFS model) DK: Safety water pressure switch SR: Heating sensor 10k Ohm 25 ° CB \u003d 343 5 SS: DHW sensor 10k Ohm 25 ° CB \u003d 343 5 TA: Indoor thermostat (optional) CM1-CM2: Jumpers for selecting the boiler type / gas type FL: Flow sensor VG: Gas valve TL: Limit value thermostat

Boiler operation Nova Florida Vela Compact

Turning on

The following procedures should only be carried out after the Nova Florida Vela Compact boiler has been installed, inspected and installed by a qualified commissioner. - Open the gas shut-off valve. - Switch on the power supply to the unit (LED will light up green). - Select the boiler operating mode using the regulator. - Set the desired temperature of the heating medium in the heating circuit with the regulator. - Set the DHW temperature with the regulator. - If there is a room thermostat, set it to the desired room temperature. When requested from the heating system, the LED will light up green. When a flame appears, the LED will turn yellow. When the boiler is turned on after a long period of inactivity, especially if it is running on liquefied gas, it can be difficult to start the boiler. In this case, turn on any other gas appliance (eg stove, oven, etc.) before starting the boiler. Even after such actions, the device may be difficult to start and lock once or twice. Unlock by turning the knob to the position for a few seconds.

Operation of boilers Nova Florida Vela Compact

To prevent too frequent switching on / off in heating mode, the boiler maintains a four-minute pause between switching on. However, if the temperature in the heating system falls below 40 ° C, the pause between switching on will be canceled and the device will turn on as needed. The boiler electronics always prioritizes DHW over heating. The domestic hot water temperature can be set between 35 ° C and 58 ° C. The temperature of the heating medium in the heating system can be set in the range from 35 ° C to 78 ° C. The Nova Florida Vela Compact boiler is equipped with a domestic hot water flow limiter, which allows you to get a maximum of 10 liters per minute. The hot water performance depends on the heat output and the temperature difference by which the device heats the water. The appliance is equipped with an anti-freeze system, which is disabled in the standby mode of the boiler. When the temperature sensor in the heating circuit detects a temperature of 5 ° C, the device turns on at minimum power and works for 15 minutes or until the temperature rises to 30 ° C. When it turns off, the pump continues to run anyway. The anti-freeze function only protects the unit and not any other components of the heating system. The heating system can be protected with a room thermostat, but remember that when the boiler is put into standby mode, the room thermostat is deactivated. The heating system can be effectively protected against freezing by using special anti-freeze products suitable for heating systems with different types of structural metals. Do not use automotive antifreeze and periodically check the effectiveness of the product. If the unit is idle, but connected to the mains, the pump is switched on every 24 hours for 30 seconds to prevent seizure.

Boiler lockout Nova Florida Vela Compact

When abnormal conditions are created during the operation of the Nova Florida Vela Compact boiler, it is automatically blocked. Proceed as described below depending on the reason for blocking.

Burner lockout

When the burner locks out, LED 2 (Fig. 1) lights up red.

If this happens, proceed as follows:

Check if the gas valve is open and if there is gas in the line (by turning on the stove, for example). - after making sure that gas is supplied, unlock the burner by turning the regulator to position for a few seconds. If the boiler does not turn on and locks out again on the third attempt, contact a qualified technician. If burner shutdown occurs frequently, signaling a permanently recurring malfunction, contact the Service Center for maintenance.

Overheating lock

When overheating occurs in the heating system, the LED indicator flashes red.

Blocking in case of insufficient pressure in the system

If the Nova Florida Vela Compact boiler locks out due to the pressure switch tripping, the LED indicator flashes yellow. Feed the heating system through the make-up tap located at the bottom next to the hydraulic connections. The pressure in the heating system (when cold) must be between 1 and 1.3 bar.

To restore pressure in the heating system, proceed as follows:

Open the system make-up valve by turning it counterclockwise and keep it open until the pressure gauge shows a pressure of 1-1.3 bar. - Close the system make-up valve by turning it clockwise. If the boiler shutdown occurs frequently for this reason, this indicates a malfunction in the heating system. When the make-up of the system is completed, carefully and carefully close the make-up valve. If the make-up valve is not closed completely, this may increase the pressure in the heating system, which will trigger the boiler safety valve and possibly splash water from it.

Blocking in case of violations in the flue gas / air supply system

In the event of conditions causing abnormal operation of the chimney or air supply, the boiler is blocked. When the boiler is shut down due to faults in the chimney / air supply system, the LED indicator lights up yellow.

Blocking in case of failure of temperature sensors

If the device is blocked due to irregularities in the temperature sensors, the LED indicator flashes as follows:

Yellow / red for the heating circuit temperature sensor; - red / green for the DHW temperature sensor.

Adjusting the maximum power

Check the value of the gas pressure at the inlet; - remove the plastic cap located on the modulator reel, which protects the adjusting screws of the pressure regulator; - connect a micromanometer to the IN connection to check the pressure at the gas valve inlet or to the OUT connection to check the pressure on the burner; - turn the regulator on the control panel clockwise until it stops and open one or two hot water taps so that the Nova Florida Vela Compact boiler works at maximum power; - to INCREASE the pressure on the burner, turn the brass nut clockwise and to DECREASE the pressure, turn it counterclockwise. - when working on liquefied gas, turn the brass nut clockwise until it stops.

Fig. 7 - Adjustment of the gas valve

Minimum power adjustment

Remove the connector from the bobbin regulator); - turn on the burner and check if the minimum pressure corresponds to the set value; - using a 10 mm wrench, while holding the nut in a fixed position, turn the plastic screw clockwise to increase the pressure and counterclockwise to decrease the pressure. - put the connector on the modulator bobbin.

Final operations

Switch on the boiler and check the correctness and noiselessness of the burner ignition; - check again the maximum and minimum pressure on the gas valve; - adjust it if necessary; - replace the protective plastic cap; - close the gas pressure measuring points; - check for gas leaks.

Things to check:

General condition of the apparatus; - tightness of the gas system of the boiler and the gas supply line to the boiler; - gas pressure at the inlet to the apparatus; - minimum and maximum pressure on the burner; - turning on the boiler; - combustion parameters by gas analysis; - integrity, degree of wear and tightness of chimneys; - operation of the traction interrupt device (CTN); - absence of flue gas leaks into the room and correct operation of the chimney (CTN); - correct operation of the flue gas safety thermostat (CTN); - operation of the fan pressure switch (CTFS); - the overall integrity of all safety devices of the boiler; - absence of water leaks and oxidation of compounds in the boiler; - operation of the system safety valve; - pressure of the expansion tank; - operation of the pressure switch in the system.

Cleaning operations for the boiler Nova Florida Vela Compact:

General cleaning of the inside of the unit; - cleaning of gas injectors; - cleaning of air intake and gas outlet pipes (CTFS); - cleaning the traction interrupter (CTN); - cleaning of ventilation grilles in the room where the boiler is installed (CTN); - cleaning the outside of the heat exchanger;

When performing the first maintenance, also check:

Suitability of the premises for the installation of the boiler; - ventilation ducts in the room where the boiler is installed (CTN); - chimneys, their diameters and length;

Correct installation of the boiler according to the instructions given in this manual.

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