Wall-mounted gas boilers are famous for their power from 14 to 32 kilowatts, gas consumption (0.1 m3 of gas is required to generate 1 kW/hour of thermal energy), and extraordinary reliability. But even they, when three years of intensive use have passed, require replacement, and for failure to perform preventive work.
How to service a heating boiler
The first step is to inspect the condition of the heat exchanger, which tends to be covered with a generous layer of scale on the inside and soot on the outside.
First of all, let's inspect the condition of the heat exchanger, which is covered with a generous layer of scale on the inside and soot on the outside.
The scale is removed in the following way - we buy special mixtures to combat scale, dilute it correctly in water with the required ratio, pour the resulting mixture into the heating and let the boiler operate in the “chimney sweep” mode, or turn on the boiler on hot water.
It is advisable to perform this type of operation late in the evening, so that the next morning, when the coolant has cooled down, drain it and replace it with a new one. When cleaning the heat exchanger, the gas consumption of a wall-mounted gas boiler will decrease by 10%!
– open the boiler body, lay newspaper down, and use a special brush with stiff bristles, and carefully remove soot from the outer walls.
In wall-mounted gas boilers with a closed burner. They use in their design a switching power supply from which they operate circulation pump, modulating fan and boiler safety group, including control board.
How to protect yourself from constant power surges
But rarely does a wall-mounted gas boiler work without electrical breakdown, since in the Moscow region there are sudden voltage drops in the household network. And one sharp drop, like a capricious switching power supply (BP), which does not have a rectifying transformer, fails.
To prevent this, it is wise to purchase uninterruptible power supplies (UPS), which are specially produced by the global industry for wall-mounted gas boilers. If you buy an inexpensive passive I.B.P., the output will be an exclusively pure sine wave, which pulsed B.P.s “love” so much.
Not a small purpose of I.B.P. in the event of a short-term power outage, the inverter unit will allow the gas boiler to operate for some time from battery offline. And as soon as the energy in the I.B.P battery runs out, the gas boiler will automatically stop working due to safety reasons. (You can read about this here)
But boiler prevention will not be complete if you do not pay attention to the pipes and heating radiators. In order for the heating to be reliable and have the required thermal conductivity, it is reasonable steel pipes heating, replace with pipes made of cross-linked polyethylene, metal-plastic or PVC
For indoor heating, it is preferable to use aluminum or bimetallic heating radiators, which are initially characterized by a low water capacity and a low level of thermal inertia.
The tips in this article are best followed by craftsmen who are doing internships in service centers.
Publication date 01/26/2015
In this article we will look at the technology for cleaning a double-circuit wall-mounted gas boiler Sime Format.zip 5c with a closed combustion chamber and two heat exchangers (primary and DHW).
The boiler is cleaned in the following order:
Turn off the boiler using the main switch and close gas tap;
Remove the boiler front panel and manifold gas burner;
To clean the burner, direct a stream of air inside to remove all accumulated debris and dust;
Clean the heat exchanger by removing dust and combustion residues from it;
When cleaning the burner or heat exchanger, do not use chemicals or iron objects.
Make sure that the top perforated part of the burner is free of scale deposits.
Assemble the previously removed boiler parts, ensuring that all elements match.
Check the functioning of the main burner;
Once all gas connections have been assembled, check them for leaks using soapy water or products specifically designed for this purpose. DO NOT USE OPEN FLAME FOR THIS!
Do not process plastic parts boiler with calcium chloride.
Chimney sweep function.
To start diagnostics of the combustion process, turn the multi-position main switch knob and stop it in the “flame” position, wait until the two-color green/orange indicator light begins to flash. From this moment on, the boiler will begin heating to maximum power, turning off at 80ºC and turning on again at 70ºC. Before turning on the chimney sweep function. Make sure the radiator valves or possible zone valves are open. You can carry out a similar check from the DHW mode. To do this, after activating the chimney sweep function, it is enough to take a sample of hot water from one or more taps. Even under these conditions, the boiler operates at maximum power at the set 80ºC and 70ºC ON THE PRIMARY CIRCUIT. The hot water taps must be open during the test.
Having completed monitoring the combustion process, turn off the boiler by placing the multi-position switch in the position you require.
Attention: the chimney sweep function switches off automatically after 15 minutes or when hot water preparation is completed.
Cleaning the primary circuit hot water filter.
To clean the filter, close the supply and return shut-off valves of the heating system. Turn off the power on the control panel, remove the front panel of the boiler and drain the water from the boiler using the drain tap.
Place a container under the filter for the remaining water, unscrew the filter cap and remove the filter mesh. Remove dirt and limescale deposits from it. Before replacing the filter, check the rubber gasket.
Please enable JavaScript to view the 
The question of how to start a heating boiler may seem extremely simple to you. We plug the device into the outlet, press a couple of buttons (if available), and the device begins to work. In fact, it turns out that the first launch is the most critical. It allows you to check the reliability of the entire system, as well as fine-tune the main heating parameters. In addition, the first launch, which, in theory, should be carried out by specialists, will determine the availability of warranty service. If you do something wrong, the device may be voided from warranty, or you may be denied free repairs, citing the fact that errors were made during connection or startup. Therefore, take the matter seriously and do everything exactly as I will tell you below. website
First start of a gas boiler: filling heating system water
First of all, I would like to say that the first launch is aimed at checking and adjusting not only the boiler itself, but also the entire heating system to which it is connected. Therefore, your first actions will determine how efficient the heating in your home will be. Initially, you need to start filling the system with water. At the bottom of the boiler, where the piping is connected, you will find a small valve or something like that. The shape of the valve may vary from model to model, so don't be surprised if your "valve" turns out to be just a plastic rotating pin. We look at the instructions and check what position the valve is currently in. If it is closed, then you need to turn it to open position. But this must be done so that the tap is not fully open. Otherwise, “stuck air” may remain in the pipes.
Next, look at the pressure gauge (pressure indicator). The first start-up of the boiler involves creating a pressure of approximately 2-2.5 atmospheres. As soon as the arrow reaches the corresponding value, turn off the injection pump (if present), close the tap and begin bleeding air using automatic or manual Mayevsky taps, and on each heating device. That is, we open the tap and air comes out. When the water comes out, you can close the tap. At this time, the pressure gauge on the boiler should show a pressure of 1-1.5 atmospheres, which must be brought up to 1.5-2 atmospheres. This will be the optimal operating pressure for your double-circuit boiler.
First start-up of a gas boiler: pressure testing and flushing of the system
In principle, not all specialists do this step, but I would recommend that you do not give up on it. You'll have to tinker, but everything will be clean inside. To carry out further operations, you will still need to acquire a pressure pump. If you don't want to buy it, you can borrow it from your friends. After this, you most likely won't need it anymore. Pressure testing of the system is carried out to determine the strength and tightness of all connections and components of the system. Simply put, when performing pressure testing, you check the system for leaks. Pressure testing can be carried out either with a water column or compressed air. We pump water under pressure one and a half times the working pressure, after which we leave the system alone for 10-15 minutes. We restore operating pressure. If a decrease in pressure was observed on the pressure gauge during the pressure testing process, then you have a leak somewhere. Correct the defects once they are discovered and repeat the process.
Next, we will proceed to flushing the system, which is an indispensable process that accompanies the first start-up of the boiler. First, a rough wash is carried out to remove all light suspended matter. Flushing should be carried out at a pressure of 4 bar. The water stirred up after pressure testing will leave the system through open waters. The second stage is finishing washing, which must be carried out using injection pumps. It is quite possible that you will encounter clogging of the “mud filters” that are installed in front of the boiler. If this happens, close the shut-off valve and clean the mesh, after disassembling the filter.
Starting a gas boiler in winter
If you are conducting your first launch in winter period, then you may stumble upon major troubles associated with the features temperature regime heating system. Before you start filling the system with water, warm up all rooms to above-zero temperatures using all kinds of heating devices. When this is done, fill the short circuit, closer to the distributor or boiler, warm up the coolant to 20 degrees, and gradually move further along the circuits. Make sure that the water being poured is within 20 degrees Celsius. You shouldn’t warm up the coolant too much, because you can, again, run into problems. I strongly recommend that you carry out this procedure with a partner who will monitor the radiators or pressure.
Direct start of the boiler
Now you can start the boiler in operating mode. We plug the device into the outlet, open the gas supply valve and look at the numbers on the screen. Press the power button, set all switches to the operating position, according to the instructions. The boiler will start to turn on. The main thing is that the circulation pump works. In order for it to work normally, you will have to remove from it the air that remains in it despite all the preliminary procedures. So, to remove air from the pump, you need to remove the front cover from the boiler, fold back the dashboard and find the circulation pump. We unscrew the wide screw from it, but not all the way. Water will run out of it, mixed with air bubbles. When the bubbles are gone, tighten the screw. That's all, now the liquid will circulate through the system in full mode. Don't worry if you hear gurgling sounds. This air valve automatically releases any air remaining in the expansion tank from the system. When the pressure stabilizes, the “gurgles” will disappear.
-
Is it possible to make an apartment electrical panel with your own hands?
-
Operation and control of a forced-action concrete mixer.
-
Vinyl wallpaper (vinyl, non-woven or paper backing), features.
-
Which plastic windows are the best - characteristics, user choice.
Egis, Egis Plus, Uno, BS
Ariston Uno
Compact dimensions (400x700x250).
- Semi-built-in connection fittings.
- Closed chamber: the outer walls of the chamber insulate it thanks to elements integrated at the back with the boiler wall, at the front with a gap to isolate the combustion chamber when the front control panel is opened.
- Compact group of heating elements: (burner, copper heat exchanger, fan, combustion chamber).
- The main circuit is controlled by two sensors with a negative temperature characteristic at the inlet and outlet of the main heat exchanger (temperature control, overheating control).
- Chassis designed for the family of compact boilers.
- Easily dismountable pipe connections using rubber gasket rings.
Hydraulic module (open and closed chambers)
A specially designed multifunctional group made of composite materials, including a rotary circulation pump and a 3-way valve body.
- The operation of the main circuit is controlled by two sensors at the inlet and outlet of the main heat exchanger (temperature control, overheating control).
- Integrated circulation pump.
- 3-way valve driven by a control board.
- Secondary heat exchanger.
- Copper hydraulic components of the DHW circuit.
- DHW flow sensor.
- Expansion tank built behind the combustion chamber.
Models of gas boilers Ariston Uno 24 Mffi, 24 Mi. Hot water preparation mode: control logic - Command to turn on the hot water preparation mode: the flow sensor detects the beginning of water flow, which allows the circulation pump to turn on. 3-way valve: hot water production corresponds to standby mode; this means that the stepper motor moves the damper, thereby opening the water outlet line from secondary heat exchanger and connects it to the suction cavity of the pump, directing the flow to the main heat exchanger, only in the event of a system transition from heating mode to hot water preparation mode. Flow sensor operation: The flow sensor detects
the pressure of cold water at the entrance to the boiler, and allows the circulation pump to start. Operation of the circulation pump: after starting, the circulation pump supplies water from the secondary to the main heat exchanger.
Checking the functionality of the sensors (Probabilistic test): The control board of the Ariston Uno 24 boiler conducts a test based on data from the NTC (1) and NTC (2) temperature sensors, checking that the temperature difference between the sensors does not exceed 5C. Fan operation ( closed chamber): The control board supplies voltage to the fan and monitors the efficiency of exhaust gas removal through a differential pressure sensor. Traction Control (Open Chamber): The control board operates the traction control system via a mechanical temperature sensor. If the sensor is disconnected, broken, or the overheating mechanism is triggered (there is no exhaust gas removal), an emergency shutdown of the boiler occurs; emergency shutdown in this mode lasts 12 minutes, the boiler can be started again by turning it off/on.
Ignition of the burner: the gas valve is activated and releases the amount of gas necessary for smooth ignition; the ignition device generates a high voltage current applied to the electrode. As a result, a spark jumps between the electrode and the burner body. Flame control: This control is carried out by an electrode that detects the presence of ionization current. Monitoring the presence and circulation of water in the heating line: the control board carries out such control by measuring 3 different meanings temperature via two sensors NTC (1) and NTC (2) for 12 seconds. The main heat exchanger of the Ariston Uno 24 Mffi / Mi boiler: heats the water, which is supplied by a circulation pump from the secondary heat exchanger.
Hydraulic group: directs the flow of water from the main heat exchanger to the secondary one; In this way, the movement of water in the heating circuit is blocked, directing it to the circuit for preparing hot sanitary water. Secondary heat exchanger: receives cold water from the multifunctional hydraulic group, heats it and transfers it to the consumer for use. Flame modulation: flame modulation occurs between the maximum hot water power value (preset on the gas valve) and the minimum power value (preset on the gas valve); the burner remains on until the temperature reaches 61C
(temperature at which scale begins to form) and turns off.
Superheat temperature control: superheat control is carried out by checking two sensors NTC1 and NTC2, the superheat temperature is 105 ±1 C. If any of the two sensors shows a temperature of 105 ±1 C, the boiler stops and the following indication lights up on the control panel: only the green signal flashes. Prevention of scale formation: in hot water preparation mode, the burner turns off when the temperature measured by the sensor at the inlet to the main NTC heat exchanger (2) reaches - 65C (safe temperature for scale formation in hot water preparation mode above 52C) or - 61C (safe temperature for scale formation in hot water mode below 52C).
If the hot water preparation command is given in heating or post-circulation mode, the burner does not turn off within 3 seconds after receiving the signal from the flow sensor, even if the NTC sensor (2) detects the scale temperature. Also, the shutdown mode based on scale formation temperature is not activated when checking the presence and circulation of water in the main circuit (within 12 seconds). The 3-way valve actuator is not activated because it is in the standby position for hot water preparation. The hot water temperature is controlled by an NTC sensor (2) at the inlet to the main heat exchanger. The control board microprocessor controls the water temperature in the main circuit, therefore, the hot water temperature is controlled indirectly.
Monitoring the presence and circulation of water in the main circuit - The Ariston Uno 24 boiler does not provide for the installation of a flow sensor in the main circuit and a maximum pressure switch: the control function for the presence and circulation of water determines the presence of water in the main circuit and the efficiency of the circulation pump. Each time the boiler is turned on, 3 delta (dT) temperatures are checked sequentially for 12 seconds based on the values of two sensors NTC (1) and NTC (2) at the inlet and outlet of the main heat exchanger: dT must increase by at least 2C in 12 seconds, dT should not exceed 50C in 12 seconds, the rate of increase of dT should not exceed 10C per second.
If at least one of these conditions is not met, the boiler stops and the pump turns off after 40 seconds. Shutdown in this mode is characterized by the simultaneous turning on of two indicators: red (blocking); yellow (no water / blocked circulation / overheating). To restart, you must set the O/I switch to position R: after five unsuccessful attempts to start, the boiler will be completely blocked and starting will only be possible after disconnecting the boiler from the power supply.
Operating functions of the Ariston Uno boiler
Chimney sweep function - To activate this function, you must turn the “on/off/restart” knob to the “restart” position and hold it in this position for 10 seconds. In this case, the boiler goes into maximum power mode according to the calibration of the gas valve and the yellow indicator begins to flash. The burner ignites as follows: in the “WINTER” mode: the burner ignites immediately and the boiler begins to operate in central heating, in “SUMMER” mode: the burner ignites only if the hot water tap is opened. In both modes, the burner turns off when the NTC sensor (1) reaches a temperature of 88C. The chimney sweep function can be disabled in two ways: Manually – by pressing the on/off switch, Automatically – 5 minutes after switching on. In the “chimney sweep” mode, the following boiler functions do not work: clock/room thermostat, heating and hot water temperature control.
“Comfort” function - The control board of the Ariston Uno 24 boiler allows you to provide the “comfort” function, which guarantees the receipt of hot water instantly when you open the tap. The control panel has a corresponding button to turn on this function and an indicator light (1st from the left in the row of indicators). When you press the “comfort” button, the boiler goes into standby mode and when the first user opens the hot water tap, the burner turns on and the boiler starts operating in DHW mode. After closing the tap, the burner, periodically turning on, continues to maintain the temperature in the DHW heat exchanger - 42C: T on = 42C - 6C = 36C, T off = 42C. This continues for 60 minutes between
the last closing-opening of the tap, then in order to save gas, the boiler goes into standby mode again. When you press the “comfort” button again, the boiler returns to its original state - the “comfort” function is turned off. Temperature sensors - This boiler is equipped with contact temperature sensors with a negative temperature characteristic (NTC) installed on the supply and return lines to the main heat exchanger.
Elements and details
Circulation pump - The pump impeller is inserted into a multifunctional group. The air vent is also built into the multifunctional group. Device: air vent port, hydraulic group, washer, pump. Pump protection: the circulation pump is controlled by a relay and two NTC sensors of the main circuit and turns off 40 seconds after activating the shutdown mode of the Ariston Uno 24 boiler in the absence or insufficient water circulation in the system.
Anti-blocking function: The pump turns on for 20 seconds every 21 hours after the boiler was last stopped. The 3-way valve remains in hot water mode. The circulation pump continues to operate for the set time after the burner is turned off in the following cases: Opening of the T.A./OR contacts - 2 minutes. Switching the switch from the “WINTER” mode to the “SUMMER” mode - 2 minutes. When the shutdown temperature is reached (4°C above the set value) - Until the end of the TA/OR command. Shutdown due to insufficient circulation or lack of water in the system - 40 seconds. Shutdown due to ignition fault or system overheating (1) - 2 minutes. Stopping hot water extraction - 30 seconds. Turning off the burner after heating the system in antifreeze mode - 2 minutes.
Main heat exchanger - Made of copper and coated with a special silicone anti-corrosion compound. The heat exchanger has two elements on two levels. Serves to transfer heat from combustion products to water circulating in the heating system and secondary heat exchanger. Device: built-in NTC contact temperature sensors, hot water supply port, cold water inlet port.
Electronic Control Board - The UNO-MCU and UNOCOM/AR control boards are designed as a complete unit electronic systems, designed to control the safety and comfort systems of wall-mounted boilers of the Ariston Uno model. The control board has a built-in microprocessor that controls various boiler functions and acts as an interface for remote control, data transmission and
thermoregulation based on indoor and outdoor temperature sensors. It is connected by wires to the sensors and actuators of the boiler to perform safety and control functions; all user adjustments and settings are saved in the memory of the remote control storage device.
All control panel indicators and adjustment potentiometers are built into the board. The control panel is made in the style of the Ariston trademark. Power is supplied to the board through the connector panel and leaves the control unit to the actuators (high voltage ~230 V), protected by two ~230 V fuses (phase and zero). The connector panel also has two additional contacts not protected by fuses (phase and neutral) 230 V at the output to the modem. A transformer protected by varistors generates a low voltage current to control the logical functions of the boiler and power additional consumers, such as a timer, CLIMATE MANAGER, modem for remote access support.
By installing jumpers on the board, the following functions of the Ariston Uno 24 Mffi / Mi boiler can be adjusted:
CN102 - Remote access / setting of sparking power - On. Off / Restart / Heating.
CN101 - Ignition delay - 0 - Ignition delay: 2 min.
CN104 - Heating temperature potentiometer: 38-44.
CN100 - Setting the maximum heating power and soft ignition - DHW mode / heating mode.
Ariston Uno boiler control panel display table
The boiler is turned off - None of the indicators are lit. Turn on moment - All indicators light up simultaneously and go out after about 1 second. Standby Mode - The green light blinks at a low frequency to indicate that power is being supplied to the control board. Setting by power - The red indicator flashes constantly - jumper 1-4 is in the boiler settings mode position. Remote Access Mode - The yellow light flashes at a low rate to indicate that Remote Access Mode is activated. The fan is running and the gas pressure switch is in the off position) - If 20 seconds after starting the fan, the pressure switch contacts do not close or if the fan does not start when commanded to start, and the pressure switch contacts remain closed for more than 3 seconds.
The burner is on - The green indicator replaces the flame observation window. Shutdown due to ignition failure - Emergency shutdown mode due to a malfunction in the spark generation system, a restart is required. Shutdown due to overheating or water circulation problems - Emergency shutdown due to system overheating or water circulation problems, a restart is required. Stops after 5 unsuccessful restart attempts within 15 seconds. - Shutdown due to exceeding the number of restart attempts; The device must be disconnected from the power supply and turned on again. “Chimney sweep” mode - The boiler operates in the “chimney sweep” mode. “Comfort” mode - The device operates in “comfort” mode.
Ariston BS
Models of wall-mounted gas boilers Ariston BS II: 24 FF, 15 FF, 24 CF
Heating mode - The heating request is activated by: room thermostat, room thermostat with timer - programmer. The temperature detected by the NTC 1 flow sensor is shown on the display. When the Ariston BS 24 ff boiler is in the standby state, the 3-way valve is in the “DHW” position. When the boiler is turned on in the “heating” mode, power is supplied to the three-way valve drive (the drive rod is retracted). The 3-way valve closes the outlet from the secondary heat exchanger and opens the coolant return line from the heating system. The pump turns on 7 seconds after the request for heating in the “heating” mode to allow the three-way valve to switch to the “heating” position; The circulation pump takes the coolant from the heating system and supplies it to the main heat exchanger.
The fan turns on (boilers with a closed combustion chamber). If the pneumatic relay contacts are closed, then the transition to the next phase of the ignition cycle occurs. If the pneumatic relay contacts do not close, after 20 seconds from the moment the fan is turned on, the device stops (the yellow LED on the control panel lights up), but the fan will continue to work, waiting for the pneumatic relay contacts to close (boilers with a closed combustion chamber). In models with an open combustion chamber, a smoke removal thermostat is used (t is monitored continuously). If this device is triggered (contacts are open), the boiler is blocked with a code (the yellow LED on the control panel lights up). Power supply to
the ignition device and the gas valve occur after the contacts of the pneumatic relay are closed. Gas supply: gas is supplied to the burner in the amount specified by the soft ignition value (starting flame) (adjusted with the DHW temperature knob when the boiler is switched to setting mode). The presence of a flame is controlled by an ionization electrode.
If ignition does not occur (max. 8 sec.): Ariston BS II 24, 15 FF: repeats the ignition procedure 3 times with smooth ignition, if no flame is detected after the 3rd attempt, the boiler is blocked. Ariston BS II 24 CF: blocked (only one ignition attempt). Control is carried out using coolant temperature sensors at the supply and return to the device. The temperature difference between supply and return (T supply-return) and the rate of change of these temperatures are checked. After registering the presence of a flame on the burner, the boiler modulates the heat output depending on the heat load. Modulation occurs between the maximum thermal power for heating and the minimum thermal power of the device
(adjustable on the gas valve). Overheating is monitored constantly (even when the burner is turned off) by an overheating protection thermostat (102±4C) with automatic restart. The thermostat is located on the coolant supply pipe. After the thermostat is activated, the burner goes out, but no indication is displayed; If the thermostat does not restart within 5 seconds, the boiler will be locked (the red overheating and blocking LEDs on the control panel will light up). Reactivation of the overheating thermostat 87C.
Ariston BS boiler components
Three-way valve - The boiler uses a 3-way valve to change the distribution of water flows (heating system or DHW heat exchanger). Control is carried out using the main board through a special relay. Body made of new composite material, new electric motor. With the new three-way valve we reduce hydraulic losses in Heating mode and thus increase the residual pressure of the pump. The lower part of the new engine is white. The new shaft housing is “10”, marked on the front. It is permissible to use a new motor with an old shaft. It is not allowed to use an old motor with a new shaft. If the boiler is in standby mode, the 3-way valve is in DHW mode.
DHW plate heat exchanger - The DHW plate heat exchanger is installed on the right and left hydraulic blocks at the rear using 2 bolts. Steel plates – profiled, reinforced.
Pump - Characteristics: Single-speed circulation pump: Pump ASKOLL type 3NK / 40 -9A – C 230 V 50 HZ, Condenser 1.4 F I (A) = 0.19 / P(W) = 40, Built-in automatic air vent, Removal screw air from the pump
Pump post-circulation
Switching off the contact thermostat - 3 min.
- Heat transfer in standby mode - 2 min.
- Burner shutdown (Setting + 4C) - No stop
- The device is turned off due to a “water circulation” failure - 1 min.
- The device does not work because no flame is detected - 2 min.
- Overheating - 2 min.
- End of the “combustion analysis” mode - 2 min.
- Regulators - Non-stop
- Operating at 62C or 65C - Non-stop
- Disabling the anti-freeze function - 2 min.
Automatic bypass - The Ariston BS 24 ff boiler is equipped with an automatic bypass (bypass valve), which allows you to protect the primary heat exchanger from insufficient circulation in the heating system. The flow is regulated automatically through a valve and spring, which opens depending on the tension of the spring. Bypass provides minimum consumption in the main heat exchanger 350 l/h. The bypass is located behind the main safety valve.
Main Heat Exchanger - The main heat exchanger is made of copper and coated with an aluminum and silicone based compound that is resistant to high temperatures. The function of the main heat exchanger is to transfer heat from combustion products to the coolant, which enters the heating circuit or plate heat exchanger if the DHW mode is activated. Mounted in a section at the top of the combustion chamber.
DHW flow sensor - The DHW flow sensor combines a turbine, filter and housing. In DHW mode, when the flow rate is more than 1.6 l/min, the turbine sends a signal to turn on the burner to the electronic board through a reed switch relay. The filter protects the turbine and plate heat exchanger of the hot water supply from contaminants and foreign particles coming with the water. The filter is checked when the boiler is first ignited, during operation and maintenance.
Temperature sensors - To control the temperature in the Ariston BS 24 FF, 15 FF, 24 CF boiler, 2 NTC clamp-on sensors are used. One is located at the outlet of the heat exchanger (NTC 1), the second is located at the inlet to the heat exchanger (NTC 2). In heating mode, NTC 1 sensor regulates the power of the gas burner. In DHW mode, the NTC 2 sensor regulates the power of the gas burner. In all cases, constant monitoring of the coolant flow is carried out by 2 sensors (via T).
Gas valve CARTIER - The CARTIER gas valve uses stepper motor technology. According to the request from the electronic board, a signal is sent to the stepper drive (motor) of the gas valve to supply more or less gas to the burner. A safety device is placed at the inlet of the gas valve to ensure proper operation. The following diagram shows the operation of a step-by-step gas valve: Request in heating or DHW mode. The safety device is activated at 24 V DC. Step-by-step gas valve modulator stage of smooth ignition. Moves the gas valve step modulator according to the request (PWM signal comes from the board). The gas valve can operate on natural gas and liquefied gas. If the fuel type is changed, it is enough to change the injectors (the maximum gas pressure setting is adjusted in accordance with the table). Max. gas valve pressure 60 mb. The ignition unit is located on the gas pipe.
Check max. burner gas pressure:
To check the gas pressure, loosen screw “1” and connect the pressure gauge to the outlet gas pressure measurement fitting.
- Turn on the water supply to maximum or the “chimney sweep” function to maximum power - press the reset button and hold it for 5 seconds, turn the DHW knob to maximum. value, the yellow indicator light flashes, the 80 indicator light is on.
- The pressure must correspond to the value in the table “ gas settings” taking into account the type of gas used for the boiler. If the pressure is not correct, tighten or loosen the adjusting screw.
- The chimney sweep function turns off automatically after 10 minutes. or after pressing the Reset button.
Adjustment of maximum thermal power and smooth ignition:
Check/adjust max. thermal power and/or soft ignition, loosen the screw and connect the pressure gauge to the gas pressure measuring fitting at the inlet.
- Press the ON/OFF button and hold it for 10 seconds; As soon as the red indicator light begins to flash slowly, you can proceed to the next adjustment.
- To adjust the max. heat output turn the heating knob. To adjust soft ignition, turn the DHW knob.
- Settings are saved in memory automatically. If one of the two knobs is not adjusted, the boiler will remember the previously set value. To exit the function, press the ON/OFF button or wait 1 minute.
- At the end of the test, tighten the screw and check that it is secure in place.
Work on liquefied gas
To modify the Ariston BS II boiler from natural gas to liquefied gas, you must perform the following operations:
Turn off the power supply to the boiler and turn off the gas supply valve.
- Remove the gas manifold.
- Change the injectors and attach the sticker according to the instructions included in the kit.
- Turn on the device.
Carry out the settings in accordance with the table (gas):
Check and adjust maximum power
- check the minimum power
- adjust the maximum heating power
- check and adjust slow ignition
- adjust the ignition delay time for heating
The Ariston BS boiler is protected from malfunctions through internal checks performed by the autodiagnostic system. An electronic board stops the boiler if necessary. There are three types of faults: Emergency blocking: To turn on the device, you must press the “Reset” button again. The blockage is associated with “overheating” and “lack of flame during ignition.” Emergency stop: The boiler is in standby mode during the error. After the cause of the error disappears, the device turns on without additional actions. Information messages: do not affect the operation of the device.
Wall-mounted boiler Ariston Egis
Boiler models Ariston Egis 24 FF, 24 CF
Functions and components
Pneumatic relay control - Turning on the pneumatic relay allows you to proceed to the next stage. If after 20 seconds this does not happen, the boiler will go into mode emergency stop 6P1 with fan shutdown delay (models with a closed chamber). In models with an open chamber, the state of the thermostat contacts is monitored (continuing even when it is operating). When the smoke thermostat is triggered, shutdown is blocked via draft 601.
Flame detection - The presence of a flame is detected by the flame monitoring electrode. If the flame sensor does not detect the supplied power during the flame detection cycle: Ariston Egis 24 FF repeats the ignition attempt 3 times at soft ignition power, if after the 3rd attempt the presence of a flame is not detected, the boiler goes into lockout mode 501. Ariston Egis 24 CF goes into blocking mode 501 (only one ignition attempt). Safety time - 8 sec.
Circulation control - The check is carried out using water temperature sensors in the supply and return pipelines of the heating circuit. In this case, each of these temperatures, as well as their difference, is checked. In FF models, pressure control is additionally carried out using a minimum pressure switch.
Flame modulation - After detecting a flame, the Ariston Egis boiler adjusts the power in accordance with the required thermal load. Power adjustment is carried out by changing the power on the burner. The adjustment is carried out within the maximum heating power value (set on the control panel - parameter 231) and the minimum power value (set on the gas valve). There is the following relationship between turning off the burner and the temperature: 1 minute after flame detection: T off = T set point + 8C, 2 minutes after flame detection: T off = T set point + 6C starting from the 3rd minute after flame detection: T off = T set point + 4C. This principle prevents the burner from switching on too quickly at a certain system temperature. The next ignition can be carried out after a specified time from 0 to 7 minutes (the default is 2 minutes; the value is adjusted on the control panel - parameter 236).
Overheating control - Carried out by a thermostat (102±4C) located on the heating return line (even when the burner is on). After the thermostat opens, an emergency shutdown occurs (without indication); after 5 s, if the thermostat is already open, the boiler is blocked (entered into permanent memory). Error 101 appears on the display.
3-way valve - To change the direction of water movement, the device uses a three-way valve (installed on the line of the heating system or DHW heat exchanger). The 3-way valve is controlled by the electronic board of the Ariston Egis 24 ff boiler using a special relay. The valve consists of a body made of composite material and an electric motor (drive). If the boiler is in standby mode, the valve is in DHW mode. The three-way valve is driven by an ELBI electric motor. When replacing, the valve is dismantled without draining the system; it is necessary to remove the clamp (2) and disconnect the power cable. The three-way valve is powered from the boiler electronic board in accordance with the one selected on the panel
function control (mixed mode or DHW only). Two microswitches built into the housing (right and left) allow you to turn off the electric motor voltage when switching positions.
DHW heat exchanger - The DHW plate heat exchanger is mounted on the hydraulic units with 2 screws. The mounting holes for the screws are located asymmetrically on the heat exchanger body, installation in the wrong position is excluded.
Circulation pump - Constant speed circulation pump: Wilo INTMTSL 15/Premium-1. Types of post-circulation pump. Room thermostat open - 2 min. (adjustable with parameter 2 37 from 0 to 15 min.). Return from heating mode to standby mode - 2 min. The burner is off (setting T +4 C) - Constantly. The boiler is turned off due to lack of water circulation - 103 – 104 – 105 – 106 – 107. - 1 min. Device blocked - no flame detected 501 - 2 min. Overheating 101. - 2 min. End of operation of the “CHIMNEY SWEEPER” function - 2 min. If parameter 10 of menu 2 is set to "CO". - Constantly. End of DHW request or end of COMFORT cycle parameter 2 54=0 30 min. (T75C) / 3 min. (T75S).
End of DHW request or end of COMFORT cycle parameter 2 54=1 - 3 min. The anti-scale system turns off at 62C or 65C according to the DHW sensor NTCs - Without stopping. End of the anti-freeze function. - 2 minutes.
Bypass - The Ariston Egis 24 FF, 24 CF boiler is equipped with an automatic bypass that does not require adjustment. In the event of a loss of load in the system, caused, for example, by the activation of a thermostat or valve, the bypass ensures a minimum flow in the main heat exchanger of 350 l/h. Thus, the bypass protects the main heat exchanger from overheating in the event of weak or insufficient water circulation. When these conditions occur, the system adjusts the power and then turns off the burner when the set temperature is reached. The bypass is located in the supply unit and is attached to the same block as the 3 bar safety valve.
Expansion tank - The expansion tank allows you to compensate for the pressure that arises in the primary circuit when the water temperature rises. It consists of two parts separated by an SBR rubber membrane. One part contains nitrogen, the other contains water from the main heating circuit. The nitrogen chamber (which can be compressed) absorbs the excess water created when the water temperature rises. The expansion tank is designed to work with no more than a 175-liter heating system.
DHW flow sensor - In DHW mode, water flow passes through the turbine, which allows the electronic board to measure water flow using relays on the reed switches. When the DHW flow fluctuates, after measurements taken by the DHW flow meter, the board transmits a command to start or stop gas supply in order to reduce temperature fluctuations. The DHW flow sensor is equipped with a filter at the inlet to protect against contamination. There is also a device that protects against water hammer in the cold water pipeline, which can be activated using parameter 252 within a range of 0.5 sec. up to 20 sec. (0.5 sec by default). Data on the DHW circulation can be obtained using parameter 825. The voltage at the CN14 connector can also be measured.
Temperature sensors - To monitor the temperature in the supply and return lines of the primary circuit, there are two contact sensors. To determine the DHW temperature, an NTC 2 sensor is used, located at the inlet of the main heat exchanger, and the DHW regulation occurs indirectly, based on the temperature of the coolant. If the NTC 1 sensor is faulty, then the Anti-Freeze function is ensured by the NTC 2 sensor (only by the operation of the circulation pump, without turning on the burner).
Gas valve SIT 845 SIGMA - Gas supply valve installed on the Ariston Egis 24 ff boiler - valve model SIT 845 SIGMA with two control coils (power supply from 220 V alternating current), which supply gas to the main burner or shut off the gas supply. The pressure of the gas coming from the valve is regulated by a low voltage modulator (24 V) located on the valve, depending on the readings of temperature sensors transmitted to printed circuit board. The modulator is suitable for working with both natural and liquefied gas. The valve is also equipped with a NAC504 assembly designed to supply power to the ignition unit and gas valve. The valve is adjusted so that when switching to another type of gas it is only necessary to install the appropriate nozzle (replacement of valve parts is not required). The maximum permissible inlet gas pressure for this valve is 60 mbar.
Burner - All models of Ariston Egis boilers use a 19 mm Polidоro burner. The electrodes (two ignition electrodes and one flame detection electrode) form a single part. The ignition electrodes must be positioned at a distance of 4±1 mm from the burner, 8±1 mm from the base of the burner; the flame detection electrode must be at a minimum distance of 8±1 mm from the burner. If the burner does not ignite at the end of the ignition cycle, error code 501 is displayed on the control panel display. The minimum ionization current is 1 microampere. Ionization voltage is 110 VAC.
Pneumatic relay - To ensure proper drainage flue gases The boiler uses various pressure switches. 24 kW: OFF = 50 Pa / 0.50 mbar; ON = 60 Pa / 0.60 mbar. The first pressure value is determined in the fan (point “L” of the pneumatic relay). The second pressure value is determined inside the combustion chamber (point “H” of the pneumatic relay). In fact, two negative pressure values are used (relative to
atmospheric pressure), but this is especially important for pneumatic relays if there is a corresponding pressure difference (which can be measured using a differential pressure gauge connected to two pressure measuring points located at the top of the boiler). During boiler operation, the pneumatic relay is always active. Any “opening” during operation is always recorded. 607: The air relay is turned on before the ignition process begins. 6Р1: The air relay did not turn on when the fan started.
Ariston Egis Plus
Ariston Egis Plus gas boiler models: 24 FF, 24 CF
Features of the hydraulic module of the Ariston Egis Plus boiler
The operation of the main circuit is controlled by two NTC temperature sensors at the inlet and outlet of the main heat exchanger (temperature and superheat control).
- Innovative multifunctional group made of composite materials (components heating circuit) allows you to combine several functions while maintaining compact dimensions.
- Elements of the hot water preparation circuit are made of bronze.
- Command to prepare hot water (minimum pressure 0.4 bar).
- The group combines a circulation pump, a 3-inlet valve body, and a deaerator body.
- From the front: the circulation pump and the 3-port valve can be removed from the front: by removing the pump, you can ensure that its impeller is integrated into the multifunctional group.
- On the side: the connection point for the flexible bypass tube that connects the multifunction group to the hydraulic supply group.
- Top: Air vent valve body (immediately behind the pump impeller), connection point for the pump supply tube that connects the hydraulic group to the main heat exchanger and connection point expansion tank.
- Bottom: fitting for the heating circuit and cold sanitary water inlet (flow sensor housing and automatic make-up port).
- Rear: The hydraulic group is connected to the secondary heat exchanger.
Water supply group - The supply group is connected to the multifunctional group via a proportional bypass, and at the rear to a secondary heat exchanger. Front: the supply group is connected to the hot water pipe from the main heat exchanger with water sensor and safety
valve at 3 bar. Components of the Ariston Egis Plus 24 boiler hydraulic group: hot water pipe from the main heat exchanger, heating circuit supply fitting, safety valve, hot sanitary water supply fitting, secondary heat exchanger, bypass (to the multifunctional group): maximum capacity of the bypass circuit is 380 l/min. Make sure that the maximum pressure in the water supply system does not exceed 6 bar; if it is exceeded, it is necessary to install a pressure reducer. The minimum pressure to switch to hot water preparation mode is 0.4 bar (only for MFFI models). You can install a water flow limiter on the hot water outlet to save hot water and reduce waiting time.
Three-way valve - The 3-way valve is constantly energized, its function is to direct the flow of water from the main circuit to heat the secondary heat exchanger (in hot water preparation mode) or to the radiators (in heating mode). In heating mode, the return spring pushes the damper, shutting off the hot water circuit. In hot water preparation mode - motorized drive
overcomes the action of the return spring and moves the damper, shutting off the heating circuit. Switching the 3-way valve: In the “WINTER” mode, the circulation pump is switched on by a signal from the room thermostat with a fixed delay of 7 seconds - the time required to switch the 3-way valve, controlled by a relay, from the hot water preparation mode to the heating mode.
Three-way valve drive - Specifications: pusher stroke: 7.5 mm, switching time: valve opening: 6 sec. valve closing: 4 sec., voltage: ~220V/50Hz. Removing the 3-way valve: Disconnect the actuator spring retainer. Disconnect the drive. Unscrew the screw. Disconnect the drive assembly. Remove the pusher, damper and spring. Clean all components from traces of scale; When assembling, it is necessary to ensure the alignment of the components and correctly install the O-rings on both fittings.
Water inlet fitting and flow sensor - When the consumer turns on the hot water supply, water passes through the housing of the sensor, which operates on the Hall effect principle (the signal pulse depends on the water pressure). The water pressure must be at least 2.5 liters per minute to transmit the control signal. The control board supplies voltage to the flow sensor, which transmits the control signal for switching (if the water pressure is sufficient to switch the system to DHW mode) back to the board, which, in turn, switches the system to DHW mode. This control signal operates in on/off mode. The minimum pressure is 0.4 bar. The control board of the Ariston Egis Plus 24 FF, 24 CF boiler does not respond to a signal lasting less than 0.5 seconds, preventing short switching on and off in the event of water hammer in the cold water supply circuit. Components: Cold water inlet, Filling port, Cold water inlet, Flow sensor, Sensor gasket, Water outlet port to multi-function hydraulic group
Expansion tank - The expansion tank equalizes the expansion of water that occurs in the main circuit due to temperature changes. It consists of two sections separated by a rubber diaphragm. Nitrogen is pumped into one section, the other is directly connected to the main circuit. Technical characteristics: Capacity: 7 liters, Nitrogen pressure: 1 bar, Maximum operating temperature: 90C, Maximum operating pressure: 3.0, Maximum main circuit capacity: 130 liters, Parts: fixing bracket, connection tube with multifunctional group, fitting.
Secondary heat exchanger - 16 section plate heat exchanger made of of stainless steel Model AISI 316. Power: 27 kW. The heat exchanger is equipped with a deaxial stop to ensure correct installation.
Gas equipment for Egis Plus boilers
Gas valve - The boiler is equipped with a gas valve model SIT 845 SIGMA. The low-voltage modulator installed on the valves (24V) is the same both when using natural gas and when using liquefied gas. Electrical diagram of solenoids: EV1 voltage (between pins 3 and 4) = 220 V. EV1 resistance (between pins 3 and 4) = 878 Ohms. EV2 voltage (between pins 1 and 3) = 220 V. EV1 resistance (between pins 3 and 4) = 6860 Ohm. Modulator coil resistance = 80 Ohm. The gas valve is equipped with a spark generator / ignition transformer RB CONTROL 230 V. The gas valve 845 Sigma is equipped with two safety solenoid valves that control the gas movement. Electrical power is supplied to the first valve (EV1), thereby opening the passage of gas to the first damper.
The second electrovalve (EV2), installed on the servo control circuit, allows gas to pass into the chamber under the second damper (intermediate chamber). In the event of a power failure or loss of gas pressure, return springs return valves to closed position, cutting off the gas supply to the boiler. The pressure is regulated via a servo control circuit. The outlet pressure is maintained constant, while the supply capacity and inlet gas pressure are changed by the modulator. When the outlet pressure reaches the set value, the regulator diaphragm rises and the gas pressure in the intermediate chamber drops, thereby lowering the damper and reducing the outlet gas pressure to the set value. Likewise, when the outlet pressure drops, the pressure in the intermediate chamber increases, raising the damper and correspondingly increasing the outlet gas pressure.
Adjusting smooth ignition / maximum voltage sparking - Smooth ignition and maximum power of the heating circuit on the gas valve 845 Sigma are regulated by a potentiometer on the control board. To adjust, you need to install jumper No. 4 from position (CN100 connector) B to position A and disconnect the ionization electrode; in this way the following functions are activated: with the handle for setting the DHW temperature – adjusting the smooth ignition (the red indicator flashes); using the heating temperature adjustment handle – maximum heating power (red indicator flashes). The Ariston Egis Plus 24 ff boiler starts in the smooth ignition pressure mode and, as soon as the ionization electrode detects a flame, this mode is turned off. If no flame is detected, the following indication appears on the control panel: the red indicator flashes.
Adjusting the power in the mode of checking the presence and circulation of water - On this boiler it is possible, only when changing types of gas, to adjust the power at the time of checking the presence and circulation of water, which is carried out using temperature sensors NTC(1) and NTC(2). This check interval lasts 12 seconds after flame detection; the boiler controls power differently, depending on whether it is operating in central heating mode or in DHW mode: Heating mode: after the soft start stage, the boiler reaches the set power value depending on the position of jumper No. 1 and the heating temperature adjustment handle, by default this is is 60% of maximum power. DHW mode: after the soft start phase, the Ariston Egis Plus 24 FF/CF boiler can go into modulation mode if an increase in power is necessary; If the regulation requires a reduction in power, the boiler must return to the fixed power value that was set.
To adjust the power depending on the type of gas, it is necessary to install jumper No. 1 (connector CN102) from position B to position A, thus the heating temperature adjustment knob is activated for adjustment (red indicator flashes). In heating mode, this knob adjusts the gas pressure (by default it corresponds to 60% of the heating output) depending on the type of gas, namely natural gas = 49% of max. heating power, liquefied gas = 70% of max. heating power. This adjustment can only be made within 12 seconds of detecting a flame. When jumper No. 1 returns to its original position, the control board memorizes
set value.
Gas Pressure Adjustment - Gas inlet pressure and (max/min) gas valve outlet pressure can be measured through dedicated ports. Once the inspection is completed, the corresponding screws must be tightened and sealed. Recommended tightening torque is 1.0 Nm. Disconnect the compensation tube, if used, and remove the plastic cap. Supply pressure: set the boiler to maximum power mode (maximum current is supplied to the modulator) and take a measurement. The boiler returns to normal mode after 5 minutes or by pressing the off-on button. Maximum pressure: set the Ariston Egis Plus 24 FF/CF boiler to maximum power mode
(maximum current is supplied to the modulator). Tighten the nut, increasing the outlet pressure, unscrew it, decreasing the gas pressure. Use a 10mm wrench. The boiler returns to normal mode after 5 minutes or by pressing the off-on button. Minimum pressure: turn off the power from the valve modulator (disconnect the corresponding wire), hold the nut, tighten the screw, thereby increasing the pressure, or release the screw, decreasing the pressure. Use a flathead screwdriver. Remove the plastic cap from the modulator. Natural gas G20 / Butane G30 / Propane G31 - Inlet pressure (mbar) - 20 / 30 / 37. Max. pressure (mbar) - 10 / 24.2 / 36.1. Min. pressure (mbar) - 2.1 / 6.8 / 6.5.
Ariston Egis Plus boiler burner (closed chamber) - Technical characteristics: Compact type. Power: 24 kW. Number of injectors: 11. Injectors: Diameter 1.35 mm for natural gas G20. Diameter 0.78 mm for liquefied gas (G30 – G31).
Burner (open chamber) - Technical characteristics: Compact type. Power: 24 kW. Number of nozzles: 12. Nozzles: Diameter mm for natural gas G20. Diameter mm for liquefied gas (G30-31).
Changing the type of gas: setting the power in the mode of checking the presence and circulation of water in the heating circuit - To switch from one type of gas to another on the Egis Plus boiler, follow the instructions: Remove the burner. Replace injectors and associated gaskets. Repeat max/min adjustment. pressure and soft start on the gas valve. Change the sparking power (within 12”) in the mode of monitoring the presence/circulation of water in the heating circuit.
Flame detection - The flame is detected by the ionization current through the ionization electrode. A short circuit of the ionization electrode to ground will lead to an emergency shutdown of the boiler. Minimum ionization current approximately 0.5 mA; The voltage between the electrode and the ground is 110 V; The minimum resistance between the electrode and ground is more than 60 MOhm. Polarity does not matter when determining the presence of a flame.
Ionization current test method: Disconnect the wire between the electrode and the board in the center. Measure the presence of 0.5 mA current with a tester between the two open contacts of the wire. Voltage test method: Disconnect the wire between the electrode and the board at the center. Measure the voltage (at least 110 V) with a tester between the wire and ground.
Operation of wall-mounted gas boilers Electrolux Quantum
Sequence of actions to prepare for work:
Open the gas meter tap and wall-mounted boiler.
Check the tightness of the gas connection by applying a soap solution or similar product.
Close the gas valve. Remove the front panel of the case.
Open the shut-off valve at the inlet of the hot water supply system (if one is provided during installation).
Open one or more hot water faucets to release air from the pipes.
Loosen the automatic vent valve plug. Open the radiator taps.
Fill the heating system.
Bleed the radiators and high points installation, then close any manual air release devices again.
Remove the plug and unlock the pump by turning the rotor with a screwdriver. During this operation, release the air from the pump.
Close the pump plug.
Reinstall the front panel of the case. Complete filling of the heating system.
Bleeding the unit and pump must be repeated several times.
Turn on the power supply to the boiler (using a two-pole switch). The LCD displays all characters followed by OFF. Open the gas valve.
Check the operation of the boiler in hot water supply and heating modes.
Checking the gas regulation on the Electrolux Quantum boiler
Checking the network pressure:
After turning off the boiler (making it inoperative), check the supply pressure using a tap and compare the read value with the values given in the passport.
Carefully close the pressure test outlet.
Checking the maximum pressure in the burner of the Electrolux Quantum 24Fi boiler:
Open pressure tap 26 (Fig. 11) and connect the pressure gauge.
Set the water temperature regulator in the hot water supply system to the maximum value.
Remove the protective plug “A” of the modulating device 25 (Fig. 10), freeing it from the stop “B” (for this purpose, turn it clockwise and pry it off with a screwdriver).
Release sufficient hot water. Compare the measured pressure with the standard values.
To calibrate burner pressure, turn the large hexagonal brass modulator nut 25 (max), see Figure 11 (turning the nut clockwise increases pressure).
Checking the minimum pressure in the burner:
Disconnect one of the two power cables C of the modulating device 25. Be careful not to touch the metal parts of the boiler (see Fig. 11).
Compare the measured pressure with the values indicated in the passport.
To calibrate the burner pressure, turn the plastic screw (25 (min.), Fig. 11) while holding the large hexagonal brass nut (25 (max.)) of the modulating device stationary (turning clockwise increases the pressure).
Connect power wire C to the modulator.
Check the maximum burner pressure again.
Replace the protective plug A (Fig. 10).
Close the hot water tap.
Close pressure tap 26.
Fig.10/11. Gas adjustment
Burner ignition adjustment:
Disconnect the Electrolux Quantum 24Fi wall-mounted gas boiler from the power supply.
Make sure the room thermostat is in the “heating” position.
Open the outlet for measuring pressure 26 (Fig. 11) and connect the pressure gauge.
Turn on the power to the device.
Make sure that the burner ignites evenly. If necessary, calibrate the ignition level.
Before proceeding with ignition calibration, turn off the power supply to the boiler using a two-pole switch.
Set the water temperature regulator in the hot water supply system and the function switch to the desired position.
Turn on the power supply to the Electrolux Quantum wall-mounted boiler: the following symbols will be displayed sequentially on the LCD display.
To adjust the burner ignition pressure, enter programming mode by pressing and holding the reset button for 15 seconds until parameter P01 appears on the LCD display. The LCD will display the following characters in sequence (parameter P01 will light up alternately with -- -- --).
Press the reset button and scroll through the parameters to P14, which is for setting the burner ignition pressure. The following characters will be displayed sequentially on the LCD (Parameter P14 will light up alternately with the number 135).
To change the setting, turn the hot water temperature control to the desired position.
Maintenance of gas wall-mounted boilers Electrolux Quantum
To ensure reliable and uninterrupted operation boiler, it is necessary that authorized specialists service center performed maintenance and cleaning once a year.
Before carrying out any cleaning, maintenance work, opening or dismantling of panels, switch off the power supply to the appliance using the all-pole switch provided during installation and close the gas valve.
Removal external panels gas boiler Electrolux Quantum:
Front panel - Remove the screws. Remove the front panel by pushing it up to release it from the lower hooks.
Side panels - Loosen the screws and remove two side panels, pushing them up to release them from the top hooks.
Emptying the hot water circuit:
Close the shut-off valve at the inlet of the hot water supply system (if one is provided during installation).
Open the hot water taps.
Emptying the heating circuit:
Close the supply and return valves of the heating system.
Open the boiler drain valve.
Cleaning the primary heat exchanger:
Remove the front housing panel and the front combustion chamber panel.
If there is contamination on the fins of the primary heat exchanger, completely cover the burner ramp with a sheet of paper or newspaper and clean it with a bristle brush.
Checking the pressure build-up of the expansion tank:
Empty the heating circuit according to the instructions and ensure that the expansion tank pressure is at least 1 bar.
If the pressure is lower, adequate pressure build-up must be ensured.
Cleaning the hot water heat exchanger:
The need to remove scale from the heat exchanger of a hot water supply system should be assessed by a specialist from an authorized service center, who, if necessary, will carry out cleaning using specially designed products.
Burner cleaning:
The inclined multi-gas burner does not require special maintenance; it is enough to clean it from dust using a bristle brush.
Whether this component requires special maintenance should be determined by an authorized service technician.
Smoke control device
The boiler is equipped with a device for controlling the removal of smoke (exhaust gases).
If smoke is discharged into the room (due to blockage or malfunction of the chimney), this device turns off the gas supply to the boiler, interrupting its operation.
Frequent operation of the device indicates a malfunction of the smoke exhaust system (chimney or chimney). In this case, a qualified person should take appropriate measures.
In the event of a confirmed malfunction of the device, it can only be replaced with a similar device from the original manufacturer.
Checking the efficiency of the Electrolux Quantum wall-mounted boiler
It is necessary to monitor the efficiency at the frequency required by current legislation:
Start the boiler in heating mode at maximum power.
Check the combustion process in the boiler using the taps located on the chimneys and compare the measured data with the tabulated ones.
The test can also be carried out if the boiler is operating at maximum power in hot water mode, which must be indicated in the test report.
Setting up the chimney sweep function
If the Electrolux Quantum 24Fi boiler is operating in "chimney sweep" mode, you can disable some automatic functions to simplify inspection and control operations:
Set the control panel controls to the desired position.
To access the chimney sweep function, enter programming mode by pressing and holding the reset button for 15 seconds until parameter P01 appears. The LCD will display the following characters in sequence (parameter P01 will light up alternately with -- -- --).
Press the reset button and scroll through the options until you reach the option for setting up the chimney sweep function. The LCD will display the following characters in sequence (parameter P09 will light up alternately with 00).
Set the hot water temperature regulator to the minimum value. On the LCD display, P09 will light up alternately with 01.
The activation of the chimney sweep function is also indicated by the alternate display of symbols.
The heating power can be adjusted using a water temperature regulator in the hot water supply system.
__________________________________________________________________________
__________________________________________________________________________
____________________________________________________________________________________________________________________________________________________
_______________________________________________________________________________
__________________________________________________________________________
OPERATION AND REPAIR OF BOILERS
