if you have Vacation home, and communications are not connected to it, then you can solve the issue expressed in the need for heating and providing water heating with the help of boiler equipment. The main thing is to make the right choice, because such an installation will take up and heating system central place. The choice should be made based on safety and reliability rules.

Modern heating equipment is offered in a huge range. You may prefer a floor-standing or wall-mounted model, with or without a chimney, non-volatile or power-assisted. Modern manufacturers They offer for sale single-circuit and double-circuit heating equipment options. The former will be able to make the house more comfortable and cozy, while the latter will allow you to use hot water. Before making a choice, you need to read the reviews; Proterm boilers are no exception to this rule. They are offered in a wide range, can have different power and specifications, you can read about this below.

Review of boilers from the manufacturer "Proterm": "Bear 50 KLZ"

This equipment model costs RUB 143,914. It is a gas floor-standing boiler that can operate on mains fuel. The consumer will have the opportunity to provide a connection to liquefied gas. The equipment is double-circuit and is used for heating, as well as for hot water supply. The design has an open combustion chamber.

To remove combustion products, a fan must be connected. This Proterm Bear boiler has a 10-liter expansion tank. The heat exchanger is based on cast iron, which increases the reliability and service life of the boiler. The manufacturer made sure that the unit was protected from overheating of the coolant in the system. To do this, engineers equipped the model with a cooling circuit. Convenient start-up of the device is ensured by electric ignition.

Considering the model of heating equipment “Bear 50 KLZ”, we can mention that it has a power of 49 kW. The burner is modulating. The maximum power consumption is 50 kW. The gas temperature at minimum and maximum power is 115°C.

You may also be interested in how liquefied gas is consumed; the value is 3.8 kg per hour. Heating temperature is equivalent to 85°C. At 25°C coolant, productivity reaches 21 liters per minute. If the dimensions of the boiler room are limited, then you should take an interest in the design parameters, they are 1385x505x892 mm. The device weighs 210 kg. It belongs to the X4D protection class. The volume of the expansion tank is 10 l.

The coolant outlet temperature can reach up to 70 °C. The possible pressure of natural gas is 0.013 bar. Maximum natural gas consumption 35.2 m 3 /h. If you plan to connect the equipment yourself, then you may need a chimney diameter of 180 mm. At 100% thermal power, the equipment efficiency is 92%.

Reviews about the model

The above-described Proterm heating boiler, according to consumers, has many positive features, among them the following should be highlighted:

• simple controls;
• high efficiency;
• independent regulation of thermal loads;
• possibility of replacing middle cast iron sections.

As for ease of control, it is provided by an external panel with which you can adjust and control parameters floor model. Consumers emphasize that this equipment is used for systems with closed coolant circulation.

The device is controlled using a built-in microprocessor. Buyers, in their words, quite often choose this model for the reason that it provides the ability to independently adjust the thermal loads of the hot water supply and heating circuits. The unit is also good because it is resistant to complex hydraulic conditions.

User manual

After you familiarize yourself with the characteristics of the Proterm boiler that you have purchased or are just planning to purchase, it would not be a bad idea to ask what operating rules the manufacturer prescribes. Quite often, this allows you to extend the life of the equipment or prevent its breakdown. As for the model described above, it must be installed only in specially equipped rooms for this purpose.

The device is put into operation only after testing. It is important to follow safety regulations. They say that gas supply standards must be taken into account. You can set the water temperature in the boiler yourself. This also applies to heating temperature. In this case, the operator will have to use the MODE button.

To set the time intervals for heating water in the boiler, use a timer. Exploitation gas boiler“Proterm” is also convenient because on the panel you can see equipment messages about errors that occur during operation. For example, if you see an F1 code, it will indicate a loss of flame. But the designation F2 indicates that the boiler temperature sensor was faulty.

Review of the wall-mounted boiler brand "Gepard 23 MTV"

Another equipment option from the manufacturer Proterm is Gepard 23 MTV. You can purchase this model for RUB 42,088. The device was developed in 2015 and is used for heating as well as hot water supply.

The design provides for a closed combustion chamber, which makes it possible to use a coaxial chimney. The boiler has a primary heat exchanger made of copper. The burner is made of chromium-nickel steel. The heat exchanger in the device is plate-type and made of stainless steel.

Specifications

The above-described Proterm Cheetah boiler has a power of 24.6 kW. Power consumption reaches 156 W. Buyers are often interested in the maximum consumption of natural gas, which is 2.9 m 3 /h. Temperature hot water the output can reach 65°C, while its minimum value is 35°C. The permissible natural gas pressure is 0.02 bar. The volume of the expansion tank is 5 liters.

The equipment belongs to the X4D protection class. The unit weighs 34 kg, this should be taken into account, because the Proterm wall-mounted boiler must be securely mounted on a vertical surface. Temperature flue gases is 110°C. Maximum fuel consumption when using liquefied gas is 2.1 kg per hour. The heating temperature can reach 83°C, while the minimum value is 35°C. If you plan to install the device in cramped conditions, then you should be especially interested in the dimensions of the unit; they are 740x310x410 mm.

Among the main advantages of the above-described equipment option, consumers highlight:

• closed combustion chamber;
• equipped with a coaxial exhaust gas system;
• the ability to receive information about the operation of the boiler using a liquid crystal display;
• automatic switching to hot water supply mode when opening a hot water tap.

If we compare this model with the previous one in the line, it was equipped by the manufacturer with a display. Its bright backlight allows the user to see data even in a bright room. The boiler is durable and reliable, which is ensured by a hydraulic block made of composite material. This feature improved the model compared to the previous generation, where the units were equipped with hydraulic units.

User manual

Instructions for the Proterm boiler are included. This is very convenient, because immediately after purchase you can familiarize yourself with it in order to avoid mistakes when using the device. If the boiler is not used for its intended purpose, this may pose a danger to human health and life. If you notice a strong smell of gas while operating the equipment, you should open the doors and windows wide, creating a draft. Do not use open flames or smoke, or turn on plugs, telephones or other intercoms in the building.

Do not store or use explosive or flammable substances such as paper, gasoline and paint in the same room as the boiler. Sufficient air supply must be provided for combustion. Protective devices do not need to be removed or bypassed during operation of the equipment. It is not recommended to perform any manipulations with protective systems.

Review of the Panther 35 kW boiler

This Proterm gas boiler has an affordable price of 63,398 rubles. The equipment is a two-circuit unit with closed camera combustion. The device includes a primary heat exchanger and a plate heat exchanger for hot water supply, which is made of stainless steel. The liquid crystal display is located on external panel, allowing the operator to see data even in a bright room. The risk of freezing is reduced, as is overheating thanks to additional elements security.

Model specifications

After reading the reviews about Proterm boilers, you can understand which model is better to choose. But it is also important to take into account the technical characteristics. For example, the Panther model has a power of 35 kW. Power consumption reaches 175 watts. Flue gas temperature at minimum power is 102.9°C. This traditional boiler provides a maximum power consumption of 38.4 kW.

9

Starting the boiler

Warning: Putting the boiler into
operation and its first start-up must
be produced only by certified

by Protherm specialist
specialized organization!

When starting the boiler for the first time, make sure
is that:

1. the boiler is connected to the electrical network and

in this case, the phase and zero are not mixed up.

2. gas shut-off valve is open;
3. service taps for heating and hot water supply

4. The pressure in the heating system is

within acceptable limits 1 - 2 bar.
Install the main switch (Fig. 1,
pos. 7) to the ON position (I). Boiler
will turn on and start working in mode
heating water in the boiler (if the boiler
connected to the boiler). After heating the water in
boiler the boiler will switch to mode
heating (provided that the mode
heating active). In case of protective

boiler shutdown on the panel display
control, a message will appear indicating
malfunction (see “Messages about
errors“, page 8). Using a button
RESET (Fig. 1, item 6) unlock
boiler. If, after switching on, the protective
shutdown will occur again or is not possible
will unlock the boiler,
contact your service organization.

Boiler shutdown

When the boiler is switched off for a short time
install the main switch (Fig.
1, pos. 7) to the OFF position (O).
When the boiler is turned off for a long time
period it is necessary to disconnect it from
electrical network and shut off the supply
gas to the boiler. If in winter the boiler
not used, then the heating system
needs to be emptied. However
Frequent draining should be avoided and
top-up of the heating system to avoid
formation of scale and deposits inside
boiler

Starting and shutting down the boiler

Boiler adjustment

Operating a boiler without room
regulator

according to the readings of the boiler sensor. IN
terminal block XT5 on terminals 5 and 6 is
jumper (factory setting). Order
settings:

Turn on the boiler with the main switch;
set the required temperature

flow line on the control panel.

Operating a boiler with room temperature
thermostat

In this mode, the boiler supports
set temperature in the heating system
by room regulator. Jumper,
installed in the XT5 terminal block on clamps
5 and 6, removed. In its place is connected
room regulator. If indoors
with room regulator on radiators
thermostatic valves installed,
it is necessary to convert them completely
open position.
Warning: On the control panel

Meaning

Malfunction on-
outdoor sensor
temperature

The boiler operates without restrictions, but the temperature

The coolant is regulated by the boiler sensor (see.
“Setting the heating temperature”, page 5).

If the boiler does not operate in equithermal mode, then
such a message cannot appear.

Electric boiler Proterm A heating ramp is the most common model in Russia among all manufacturers represented on the domestic market. Good quality European assembly and reliability of components, many positive feedback for Protherm electric boilers and reasonable prices contributed to their popularity among buyers, both in Russia and abroad.

To understand the advantages and disadvantages of Slovak heating equipment, it is necessary to analyze the technical characteristics and design of wall-mounted electric boilers of the Proterm Skat series, the model range presented on the market, and connection features. We will also consider problems and malfunctions that may arise during operation of the device, errors and methods for eliminating them.

The lineup electric boilers Proterm Skat, type K(KR)

Today, the Slovak company Protherm is represented on the Russian market not only with its boilers, but also with eight models of electric boilers of the Skat K(KR) type, differing in power consumption and connection to the electrical network. The country of origin of water heaters is Slovakia.

The company produces only single-circuit devices capable of heating a private house with a total area from 30 to 280 m2. Among them, both single-phase ones stand out - with the ability to connect to a 220 V power supply network, and three-phase ones - 380 Volts.

Electric boiler Proterm: photo

The main difference between electric boilers of this model range is their rated power, which can be 6 or 9 kW, 12, 14 or 18 kW, 24 and 28 kW. Depending on the chosen model, these are the units:

— low power: Scat 6K and 9K;
- medium power: Scat 12K, 14K and 18K;
— high power: Skat 21K, 24K and 28K.

The operation of the Proterm electric boiler is controlled using special buttons, made in the form of multi-directional arrows, on the front panel of the heating apparatus.

They can set the required water temperature in the heating system, as well as in the remote boiler indirect heating, which is purchased when it is necessary to obtain hot water for household needs. In addition, the button " Mode/Ok» you can turn on (set) the desired operating mode of the electric boiler:

— traditional mode for heating (25-85 °C);
— “warm floor” mode (30-45 °C);
— hot water preparation mode in an indirect heating boiler (35-70 °C).

The multifunctional LCD display informs about the temperature in the heating circuit and the boiler, as well as about problems and errors in the operation of the boiler in case of any malfunctions. Above the display there are lights that light up depending on the set operating mode of the device, changes in power consumption and insufficient water pressure in the system.

By default, everything electric boilers“Protherm” are 3-phase, however, low-power models of 6 and 9 kW (“Skat 6K” and “Skat 9K”) can be connected to a single-phase 220 V network. Medium power devices are designed for heating a house with an area of ​​up to 180 m2, and high-power boilers - more than 20 kW - can be installed in private houses or other premises with a total area of ​​up to 280-300 m2. Let's look at the table.

Proterm Skat: cable cross-section, energy consumption

Features of the Proterm electric boiler

The heating apparatus consists of several main elements necessary for its full operation.

1. Copper heat exchanger cylindrical shape for heating the coolant.
2. Block of heating elements made of copper of different power and quantity with multi-stage switching.
3. Expansion tank 7 liters to compensate for thermal expansion in the heating system.
4. Hydraulic group consisting of:

- three-speed circulation pump ;
— safety valve at 3 bar;
— automatic air vent.

Also on line heating circuit An NTS temperature sensor is installed, as well as an emergency sensor that protects the unit from overheating. There is a system to protect the device from freezing. and from blocking the circulation pump.

Electric heating elements are built into the heat exchanger of the Proterm boiler, top and bottom. Depending on the model, the number of heating elements may vary. For example, in Skat 6K, 9K, 12K and 14K devices two heating elements are installed, in Skat 18K and 21K there are three heating elements, in 24K and 28K there are four. For each model, heating element blocks have different power.

I propose to analyze in detail internal organization mounted electric boiler "Proterm Skat" according to the instruction diagram:

Internal device "Protherm Skat" according to instructions

1 - heating unit;
2 - valve for air release;
3 - heat exchanger;
4 - pressure sensor;
5 - safety valve;
6 — circulation pump adjustment regulator;
7 — pump status LED;
8 — grounding on the “return”;
9 — grounding on the water heater body;
10 - circulation pump;
11 - electrical cable connection;
12 - contactor;
13 - electronic board;
14 - NTS temperature sensor;
15 - emergency temperature limiter sensor.

Electric boiler connection: water circuit, cable

Connecting a Protherm electric boiler

1. Like most modern wall-mounted heating devices, all connectors for connecting the boiler are located at the bottom of the housing. This is done to save space in the room in which the electric boiler is installed.

2. The heating water circuit is connected using two threaded fittings with a diameter of 3/4″. On the left is the return line (coolant inlet to the boiler), on the right is the direct line (output).

3. Nearby are located: overflow for the safety valve, drain valve, as well as connectors for connecting electric cable different sections. You can monitor the pressure in the heating system using the readings of the pressure gauge, which is also located in the lower part of the device body.

Electric boilers Proterm Skat: technical characteristics, dimensions

Proterm boilers have fairly compact dimensions of 410 x 740 x 310 mm, which allows them to fit harmoniously into the interior even completely small kitchen or boiler room. We look at the remaining technical characteristics in the table.

Technical characteristics of Proterm electric boilers

Errors and malfunctions of the Proterm electric boiler: methods for troubleshooting problems

1. Error code F00, F10, F13, F19.

These codes tell us that the NTS temperature sensor is faulty. It may need to be replaced or the electronic board replaced. But first check that the cable connections are working properly.

2. Error F20.

The emergency temperature limiter sensor or thermal fuse is faulty. Try to short-circuit them one by one. If the boiler turns off again, replace the faulty element.

3. Error F22.

This error indicates a “dry” start of the electric boiler. Add water pressure in the system, it should be at least 0.6 Bar. There may also be air present in pipes and radiators.

4. Error code F41 and F55. The relay or contactor is stuck. Check these parts for defects.

5. Error F63. No communication with EEPROM. Reset settings to factory defaults.

6. Errors F73 and F74.

Errors under these codes indicate problems with the water pressure sensor. You need to check the contacts or replace the sensor itself.

7. Errors F85 and F86. Freezing of water in the electric boiler itself (F85) or in the indirect heating boiler (F86).

Electrical diagram for connecting Proterm Skat boilers

Electrical diagram for connecting the boiler Proterm Skat 6, 9, 12, 14K

Advantages of Proterm electric boilers:

— build quality and operational reliability;
— wide range of different capacities;
— modern system security;
— high efficiency 99.5%;
— the ability to connect additional options and equipment;
— good feedback buyers and specialists.

Disadvantages of the Proterm brand electric boiler:

— lack of a room unit included in the package;
— there are no models with a built-in boiler for heating domestic water;
— the use of non-freezing liquid as a coolant is not permitted;
— price from 35,000 rubles.

We looked in detail electric boilers Proterm Heating ramp, entire model range and technical specifications. Having disassembled the internal structure according to the operating instructions, we identified the main advantages and disadvantages of these devices. We also focused on possible errors if malfunctions occur and some ways to fix them yourself. Let's watch the video.

For heating and hot water supply of apartments and small private houses with one bathroom, double-circuit gas boilers are usually used.

IN big houses with several sanitary premises for heating, single-circuit gas boilers with storage boiler for preparing hot water. This system provides more comfortable use of hot water in the house.

In an apartment in a new building with apartment heating A Protherm Gepard 23 MTV double-circuit gas boiler was installed. Next, let's look at setting the boiler power using this apartment as an example.

Gas boilers of the Protherm Gepard series are almost a complete analogue (a simpler version) of the Protherm Panther boilers. This article describes in detail the adjustment and power settings of gas boilers Protherm Gepard and Protherm Panther.

It should be noted that the company that produces Protherm series boilers at its other plant produces gas boilers of the famous Vaillant brand. Vaillant gas boilers are in a higher price category due to the use of more quality materials for the manufacture of heat exchangers. But in design, other parts used, and service menu settings, Vaillant brand gas boilers are very similar to Protherm boilers.

The principles of adjustment and power settings described in this article Suitable for gas boilers of many other brands and manufacturers.

Internal structure of the double-circuit gas boiler Protherm Gepard 23 MTV and Panther 25.30 KTV (Panther)

Reasons for clocking (pulse operation) of the boiler in heating mode

The operating manual states that the useful thermal power of the Protherm Gepard 23 MTV boiler is regulated within the range from a maximum of 23.3 kW. to minimum 8.5 kW. The factory setting for power in heating mode is set to 15 kW.

The total area of ​​the apartment heated by the boiler is 60 m 2. To heat the apartment, heating devices (radiators) with a total maximum thermal power of 4 are installed kW.

How to determine the maximum thermal power of a heating circuit in a house or apartment

How to determine the maximum thermal power heating circuit? On the websites of radiator manufacturers and sellers we find the thermal power of each radiator installed in the house. In manufacturers' catalogs, the heat transfer of radiators is presented in 2 modes: 1) 90/70/20 degrees and 2) 75/65/20. You need to look at the heat transfer according to the “75-65/20” parameter. The sum of the powers of all radiators connected to the boiler will be equal to the maximum thermal power of the heating circuit. For the apartment from our example, this value turned out to be 4 kW.

The installers installed the boiler and put it into operation, “forgetting” to carry out the commissioning work. The boiler was started to work with the factory setting of maximum power in heating mode 15 kW.

Obviously, a heating system with a maximum power of only 4 kW., will not be able to accept the thermal energy produced by the boiler with a power of 15 kW. The power of the boiler burner is controlled automatically within certain limits. But the huge difference in the power of the boiler and heating devices leads to the fact that the boiler automation is not able to bring the boiler power in line with the needs of the heating system without additional settings.

The large difference between the power of a gas boiler and the power of heating devices, among other disadvantages, leads to cyclical operation of the boiler.

By the way, about other disadvantages of an overly powerful boiler. The service instructions for the Protherm Gepard 23 MTV boiler indicate its efficiency in heating mode: 93.2% at maximum thermal power (23.3 kW.) and 79.4% when operating at minimum power (8.5 kW.) Imagine how the efficiency will further decrease if this boiler has to work with a heating system with a power of 4 kW. Please note that a double-circuit boiler operates in heating mode most of the time throughout the year, with minimal power. At least 1/4 of the gas spent on heating will literally fly uselessly down the chimney. This will be the price to pay for installing overly powerful heating and hot water equipment in the house.

Tips on the topic “How to increase the efficiency of a gas boiler” can be found if you read this article to the end.

Excessive cyclicality, impulsiveness of work or, as people say, “clocking the boiler” manifests itself in the fact that the boiler burner, after being turned on, quickly turns off when the set temperature is reached in the straight pipe at the outlet of the boiler. But the radiators remain not heated to this set temperature - the water heated in the boiler simply does not have time to reach the heating devices. That is, the boiler produces more thermal energy per unit time than a less powerful heating circuit is capable of receiving. Therefore, the temperature of the water leaving the boiler rises quickly and it turns off earlier, without having time to heat the radiators.

After a short time, the circulation pump supplies the heat exchanger with the remaining cool water from the heating system return pipe and the burner turns on again. Then everything repeats again.

A high-power heating system has an increased pipe diameter and radiator volume, which means less hydraulic resistance. IN large systems the water does not flow exactly the same, it flows faster, with a higher flow rate (liters per second). During the rapid passage through the boiler heat exchanger, each liter of water only manages to heat up by 15-20 degrees o C. And in order to heat this liter to a given temperature, the water in the heating system must pass through the heat exchanger several times.

Low-power heating systems have thinner pipes, smaller radiators, higher hydraulic resistance and water flows slower. If you heat slowly flowing water with the same power, then the water entering the heat exchanger immediately, at one time, will heat up by 40-60 degrees o C, immediately to the maximum temperature, and the boiler will turn off. And the water remaining in the system, which has not reached the boiler, will remain cold until the next clock cycle. This is what happens in the boiler if its power is not adapted to the heating system.

The size of the flame (burner power) in the boiler is controlled electronically using a complex algorithm, which takes into account the time from the start of the burner, the temperature value, the rate of temperature change in the heating circuit, and the temperature difference in the forward and return pipes. I don’t know all the intricacies of the regulation algorithm, but automation, without additional service settings, does not ensure normal operation of the boiler at a power below the minimum specified in the technical specifications.

In a properly configured heating system, the temperature difference in the forward and return pipes should be no more than 20 o C.

Clocking reduces the service life of the boiler and increases gas consumption

Any person, even without being a mechanic or electrician, knows that the most difficult operating mode for equipment is the moment of startup, turning on mechanical and electrical equipment. During the start-up period, the greatest wear is observed, and failures most often occur. An increase in the number of starts as a result of cyclicity consumes the operating life of very expensive parts of the boiler the most - gas and three-way valves, circulation pump, exhaust gas fan.

To ignite at the moment of starting, the maximum amount of gas is supplied to the burner. Part of the gas, before the flame appears, literally flies into the pipe. Constantly “re-igniting” the burner further increases gas consumption and reduces the efficiency of the boiler.

Some cyclical operation of a gas boiler is provided for by its normal operating mode. For example, regulating the temperature in a room without a thermostat or using a two-position thermostat occurs by periodically turning the boiler burner on and off.

The task of regulating boiler power is to eliminate excessive cycling - clocking caused by a lack of adaptation of the boiler settings to the heating system.

To eliminate boiler clocking, it is necessary to equalize the power of the boiler and the heating circuit

You can do this in two ways:

1. Reduce the boiler burner power to a level at which the automation can ensure normal operation of the boiler with the connected heating system.
2. Increase the maximum power of the heating circuit by installing additional radiators or replacing existing ones with more powerful ones.

You can use both methods at once. Reduce the difference between the power of the boiler and the heating circuit by replacing and installing more powerful radiators. And then, compensate for the remaining difference by adjusting the boiler power.

The second method is more expensive, but sometimes you have to choose it. The fact is that, in order to save money, builders often install radiators in the house without a reserve of thermal power. As a result, in order to maintain the required temperature in the premises, in frosty conditions it is necessary to supply heating water to the radiators at a maximum temperature of more than 75 o C. At this temperature, decomposition (combustion) of organic dust particles occurs on the radiators and appears in the rooms. bad smell. In addition, the high temperature of the coolant shortens the service life of polymer pipes and other parts of the heating system made of plastic and rubber.

Sometimes, the power of radiators is simply not enough to maintain the required thermal conditions even at the maximum heating water temperature. Before adjusting the boiler power, I recommend determining the need, and, if necessary, increasing the power of the radiators by 30 - 100%, at least in the coldest rooms.

Top - standard temperature regime radiator operation in systems with plastic pipes. Below are the maximum radiator temperatures for comfortable, soft heat. To switch from standard mode to soft heat, the power (size) of the radiator must be increased by approximately 2 times.

The main advantage of low temperature heating is the possibility of using modern technologies. It's about O condensing boilers, solar collectors and heat pumps. They require that the system have low temperature heating water.

When replacing radiators, it is necessary to take into account that the expansion tank built into the boiler is designed for a volume of water in the heating system of no more than 50 liters for a Gepard boiler, and 70 liters for a Panther. If the amount of water as a result of installing new radiators turns out to be greater, then it is necessary to install an external expansion tank.

The external expansion tank is connected to the return line of the heating system closer to the boiler. In this case, it is better to disable the built-in expansion tank.

Buy radiators in your city

Heating radiators

How to regulate the burner power of a gas boiler

The useful thermal output of a gas boiler can be reduced by reducing the gas supply to the burner. They do this by changing the gas valve settings.

Gas valve Honeywell boiler Protherm Gepard (Panther) - operating diagram.
EVS1— safety electric valve; EVS2— electric drive of the control valve; Vm— a stepper motor controls gas flow through a control valve.

IN modern boilers"Protherm Gepard" and "Protherm Panther" basic settings gas valve from Honeywell changed using a stepper motor. The stepper motor is controlled from the boiler control panel through the service menu.

It should be noted that the manufacturer in some versions of gas boilers Protherm Gepard (Panther), Vaillant, instead of a Honeywell gas valve, installs gas valve SIT 845 Sigma. The maximum and minimum burner power settings for this valve are made by rotating the adjusting screws located on the valve body. Read about the features of adjusting the SIT gas valve below, on page 2.

The electromechanical devices of the boiler (electric valves, stepper and conventional electric motors, sensors) are controlled by a microprocessor of the electronic control board in accordance with the programmed program. The boiler operating program settings can be changed on the control panel using two menus - a public user menu and a hidden service menu.

Access to the service menu of the Protherm Gepard boiler

The Protherm Gepard boiler is controlled from the control panel through a publicly accessible user menu. How the owner can operate the boiler is described in the operating manual.

On the control panel you can call up another, hidden menu - a service menu intended for specialists. The service menu becomes available on the display screen after entering the code.

Press and hold the mode button (1) for about 7 seconds; the display will change - a number will appear 0 . — Using buttons + or — (2), enter code, number 35 . — Confirm entering the code by pressing the mode button (1). After this, the display will show the first line of the menu in the form of symbols alternating on the screen: d. 0.

— Using buttons + or — d.**.

- Press the "mode" button to move from the menu bar number designation " d.**» to the parameter value (the “=” symbol and the parameter value are alternately displayed on the display). — Change the values ​​of the displayed parameters using the + or — buttons (3) on the boiler panel. — 3 seconds after the change, the new values ​​are automatically confirmed. To return the display to its original state, press the “mode” button for 3 seconds. After 15 minutes of inactivity, the display returns to operating mode on its own.

Access to the service menu of the Protherm Panther boiler (Panther)

The control panel of the Protherm Panther boiler has some differences from the Protherm Gepard boiler. The boiler control panel has a hidden service menu, which becomes accessible when the code is entered.

To access the service menu of the Protherm Panther boiler, you must: Press and hold the mode button (1) for about 7 seconds; The display appearance will change. - By using buttons on the left + or — (2), enter the access code into the service menu - number 35 in the left half of the display. — Confirm entering the code by pressing the mode button (1).

After this, the display will show the 1st line of the menu in the form of symbols d.00 with the menu line number in the left half of the display, and the numeric value of the line parameter in the right half of the display. - By using buttons on the left + or — (2), enter the number with the required menu bar number: d.**.

To change the value of an option in the menu bar:— Change the values ​​of the displayed line parameters using buttons on the right + or — (3) on the boiler panel. — 3 seconds after the change, the new values ​​are automatically confirmed. To return the display to its original state, press the “mode” button for 3 seconds. After 15 minutes of inactivity, the display returns to operating mode on its own.

The service menu commands and the procedure for setting the power of the Protherm Panther boiler are similar to those given for the Protherm Gepard boiler.

Description of some service menu commands

Line d.00— maximum heating output (net power) of the boiler in heating mode, kW. The range of possible parameter values ​​is from =9 to =23, factory setting = 15 (for Protherm Gepard).

Line d.01— run-on time of the circulation pump in heating mode, min., select a value between 2 and 60 min. Factory setting =5

Line d.02— Time delay after operation in heating mode for anti-cycling, min. Protects against frequent switching on and off of the burner in heating mode (this function is not applicable in DHW mode). Choose a value between 2 and 60 min. Factory setting = 20 minutes. This delay (called anti-cycling time) prevents a rapid restart in heating mode after the burner has stopped due to the set temperature or the room thermostat TA. It depends on the coolant temperature setting: - at 80 °C, it is set to 1 minute and is not adjustable. - at 20 °C, it can be adjusted from 1 to 60 minutes using the parameter d.02 in the service menu. At intermediate temperatures, between 20 °C and 80 °C, the delay value changes proportionally in the range from 1 min. up to set in d.02 parameter.

Dependence of anti-cycling time on the parameter value setting in the line d.02 and heating temperatures

Line d.18— operating mode of the circulation pump; Operating mode options: = 0 - with burner: the pump operates together with the burner. =1 - continuous; with RT thermostat: the pump is activated by the command of the room thermostat. =2 - constantly in winter: the pump runs all the time while the boiler is in WINTER mode. Factory setting =1.

Line d.19— speed of the circulation pump; Operating mode options: =0 - burner is running; speed in heating mode is selected automatically, maximum - in DHW mode, minimum - if the burner is turned off = 1 - min. speed in heating mode, max. – in DHW mode =2 – automatically selected in heating mode, max. – in DHW mode =3 — max. speed in heating and hot water mode. Factory setting =2. Each time the burner is started in heating mode, the pump starts with limited speed at least 30 seconds. If the temperature difference between supply and return reaches 20 OK, the pump switches to maximum speed before turning off the burner (even if the temperature difference has decreased). The same cycle occurs at the next ignition.

Line d.35— shows the position of the 3-way valve, heating/DHW (read only); =99 - hot water =0 - heating =40 - middle position

Line d.36— shows on the display the hot water consumption measured by the flow sensor, l/min. when dispensing hot water (read only)

Line d.40- shows on the display the temperature of the water leaving the boiler in the direct pipeline of the heating system, o C. (only for reading)

Line d.41- shows on the display the temperature of the water at the inlet to the boiler, in the return pipe of the heating system, o C. (only for reading)

Line d.44 — Ionization current control. This parameter informs that the ionization current is in the optimal range. The displayed value does not represent the actual current value! Range of values: 0 – 10. In the range: =0 – 4 – ionization current is sufficient – ​​flame is present; =4 – 8 – ionization current is slightly below a sufficient level – there is a possibility of flame loss; =8 – 10 – ionization current does not correspond to a sufficient level – there is no flame.

Line d.52— setting the minimum power of the boiler burner by shifting the minimum position of the Honeywell gas valve stepper motor. The range of possible parameter values ​​is from =0 to =99. The lower the parameter value, the weaker the intensity of gas combustion.

Line d.53— setting the maximum power of the boiler burner by shifting the maximum position of the Honeywell gas valve stepper motor. The range of possible parameter values ​​is from =0 to =-99 (negative values ​​with a minus sign). The lower the parameter value, the weaker the intensity of gas combustion.

Line d.62- lowering the heating temperature at night. Setting range 0 - 30 o C. If you connect a timer or even a manual switch to the boiler, you can switch the boiler into two modes: day or night. In night mode, the heating temperature setting is reduced by the amount set in d.62. Those. During the day, the temperature of the heating water and the temperature in the house are higher, and at night lower. You can set it the other way around.

Line d.67 — Displays the time between boiler starts. This parameter displays the cooling time in minutes before the boiler is turned on again. The countdown of minutes begins at the moment the boiler turns off due to exceeding the maximum set operating temperature of the heating water on the boiler control panel and the room regulator is permanently closed. This parameter is important for the anti-cycling function of the boiler, when the cooling time until the next switch-on is calculated based on the set boiler heating water temperature and the set anti-cycling time interval in line d.02.

Line d.70 — Setting the position of the three-way valve. In this mode, it is possible to set the position of the three-way valve, regardless of the heating requirements for a particular circuit. Three-way valve position: =0 - valve is controlled based on standard requirements from the control system; =1 - three-way valve is set to the middle position to empty the boiler (both heating and domestic hot water); =2 - the three-way valve is set to the heating position of the extract air.

Line d.71— Setting the maximum temperature in the heating system. Select a value from =45 to =80 °C. Factory setting =75 °C.

Line d.88 — Water hammer protection in the wiring cold water(for KTV and KOV boilers). The ability to change the parameter eliminates the reaction to water hammer, which in some cases occurs in cold water pipelines. For example, at closing automatic valve in the flush cistern of the toilet (or washing machine, or dishwasher) a pressure surge (water hammer) may occur in the water supply pipes. The consequence of this may be a false response of the flow sensor (turbine) tap water, which will lead to short-term unwanted activation of the DHW mode of the boiler. Factory setting =0 - activation of the ignition process for heating tap water at a flow rate of 1.5 l/min. Changing the parameter to value =1 - activation of the ignition process for heating tap water at a flow rate of 3.7 l/min. In this case, the flow duration should be at least 2 seconds.

Line d.90 — Identification of the connected room sensor. Using this parameter, it is possible to verify that the room regulator is correctly connected, or that the communication between the room regulator and the boiler is working properly. Attention: this description Applies only to controllers that support eBus communication. If a conventional regulator with a switching relay was connected, this function cannot be used. Display: =0 - the regulator is not connected or does not communicate with the boiler; =1 - the regulator is connected and there is communication between it and the boiler.

Line d.96— Setting the boiler to the parameters set at the factory. If the settings lead to incorrect operation or failures, it is possible to restore the boiler to factory settings. Setting: =0 - replacement with factory settings will not be performed; =1 - a return to factory settings will be made Note: when entering the setting of this parameter, the display always shows parameter “0”

How to eliminate boiler clocking in heating mode

Adjusting the maximum heating power of a Gepard or Panther boiler through the service menu

At the first stage in the service menu, as described above, we find the line d.0, press the “mode” button and look at the value of the boiler power parameter on the display, kW. In our example, the factory setting =15 was visible. It is necessary to set a new boiler power value equal to the power of the heating devices connected to the boiler. This setting will only work in heating mode.

If the power of the heating system corresponds to the operating range of boiler power

The maximum power of the heating system in the house may fall within the operating power range of the boiler specified in the instructions. For example, the total maximum power of radiators in a house is 11 kW. The operating power range of the Protherm Gepard 23 MTV boiler is within 8.5 - 23.3 kW.

In the service menu, as described above, find line d.0, press the “mode” button and look at the value of the boiler power parameter on the display, kW. For example, the factory setting =15 will be visible. Using the “-” button we set the new boiler power value = 11.

I recommend trying to set the boiler power to 20 - 30% less power heating circuit, for example d.00 =9 kW. This power should be enough to compensate for heat losses at home, since the power of radiators is usually chosen with some reserve.

Increasing the anticycling time

At the second stage, increase the anticycling time in the line d.02 service menu.

Factory setting d.02 = 20 minutes. According to the graph (see above) we determine that, for the heating water temperature specified on the display, 70 o C, restarting the burner is possible after 4 - 5 minutes, not earlier.

In line d.02 we set a new value for the anticycling time, for our example the maximum possible = 60 minutes. Line d.67 displays the time in minutes until the boiler is turned on again. Breaks in burner operation became approximately 10 minutes long. Twice as much as with the factory setting, which is still too often.

Increasing the anti-cycling time results in the burner turning on later, at a lower heating water temperature. The heat flow from the boiler to the heating circuit is reduced.

Thus, selecting the settings of the boiler power and anti-cycling time through the service menu, ensure that the cycle time between turning on the boiler burner is at least 15 minutes. That is, the boiler should be turned on no more than four times within one hour.

I note that not all brands of gas boilers have the ability to adjust the anti-cycling time. In this case, you only have to select the boiler power settings.

On some brands of gas boilers, the rotation speed (performance) of the circulation pump is set manually using a switch on the pump. To reduce the boiler clock, it is recommended to increase the pump speed.

Setting up a Gepard or Panther gas boiler for power below the minimum

At the third stage setup is in progress minimum boiler power, by an amount lower than specified in the instructions.

Such adjustment is not necessary in all cases, but only when the first and second stages do not bring the required result. As in our case, when at the first stage we use the “-” button to set a new boiler power value = 9 (the minimum possible setting corresponds to 8.5 kW.). The newly set maximum boiler heating power (8.5 kW) is still very different from the power of heating devices (4 kW).

It should be noted that adjusting the boiler power using the method described below is also useful in other cases, since it allows, through an experiment, to adjust the heating power of the boiler in accordance with the actual power of the heating circuit. The actual power is usually less than the calculated one.

Before carrying out work for setting the minimum burner power, necessary:

• Fully open thermostatic and other valves on radiators and set the room thermostat to maximum temperature. The thermostat that controls the heated floors is set to the maximum permissible temperature so as not to overheat the floors.
• In the custom menu of the boiler, set the maximum operating temperature, which is set by the owners in the coldest weather, adding another +5 °C. Usually it is not less than 65 °C. If the owners do not remember it, or on the new boiler in the menu they set the factory setting for the maximum temperature of 75 °C. The boiler burner will have to switch off automatically at a temperature of 5 °C more, i.e. at 80 °C.
• Cool the heating circuit to a heating water temperature below 30 °C.

Next, start the burner in heating mode, select the line in the service menu d.52, press the “mode” button and see on the display the value of the gas valve stepper motor position parameter in the factory minimum power mode.

By removing the front cover of the boiler, we visually observe the size of the flame in the burner. In our example, the factory setting was displayed on the display, the number = 72, and the flame height in the burner was quite high.

Use the “-” button to set a new parameter value in the line d.52, for example =20. 3 seconds after the change, when the new value is automatically confirmed, we observe a significant decrease in the flame height in the burner. This indicates that the useful power of the boiler with the specified setting will be greatly reduced.

Next, observe on the display the increase in temperature in the direct heating pipeline at the outlet of the boiler. Typically, the temperature increase stops when it reaches some value less than the set value, for example 52 °C. The boiler is running, but the temperature does not increase (or changes very, very slowly). This means that a power balance has been achieved between the boiler and the heating system at this established water temperature. At this moment, we increase the parameter in line d.52 of the service menu, set a new value = 30 - the temperature begins to rise again and stops again, for example at 63 °C. Again we add the parameter value in line d.52 =35 and so select the parameter until the temperature stops at a value slightly higher than the maximum, for example 77 °C. In this way, a balance is achieved between the power of the boiler and the heating circuit at maximum operating temperature. The boiler power will be set to the minimum level required to operate with the connected heating circuit. In this case, the cyclic operation of the boiler will be minimal.

If the radiators do not warm up well in height, the temperature difference in the forward and return pipes at a maximum temperature is more than 15-20°, then increase the response pressure of the bypass valve. Read below on how to adjust the bypass valve. The water temperature in the forward and return pipelines can be seen on the display if you enter the service menu, lines d.40 and d.41.

In case of adjusting the bypass valve, the gas valve setting in line d.52 must be repeated.

In our example, the burner heated the water to a maximum temperature of 77 o C at the minimum value of the parameter in the line d.52, equal to =28 (factory setting was =72). With a lower parameter value, the burner could not heat the water to the specified temperature. And at a higher value, the burner heated the water to 80 o C and the boiler automatic switched off the combustion.

It should be noted that the method described above for adjusting the gas valve, which allows you to balance the boiler power with the power of the heating circuit through an experiment, is not included in the recommendations of the boiler manufacturer. This is the idea of ​​the author of the article, successfully implemented during setup autonomous systems heating with gas boilers.

Factory calibrated gas valve

Honeywell gas valve. 1 — fitting for measuring the gas pressure at the outlet to the burner; 2 — fitting for measuring inlet pressure.

The boiler manufacturer specifies Calibrate the minimum power on the gas valve as follows:

In line d.00 of the service menu, set parameter =9, which limits the boiler power to the minimum level specified in the instructions. Turn on the boiler in heating mode.

A pressure gauge tube is connected to the upper fitting at the gas valve outlet. Before connecting, it is necessary to unscrew the locking screw on the fitting 1-2 turns.

Call line d.52 service menu. And changing with buttons + And — string parameter value d.52, set the gas valve outlet to the minimum pressure specified in the boiler operating manual. For example, for a Gepard 23 MTV boiler, the minimum pressure in front of the burner is 1.5 mbar or 15.5 mm.water.st..

This setting will ensure the boiler operates with the minimum power specified by the manufacturer - 8.5 kW. The boiler manufacturer's service instructions do not answer the obvious question of what to do if the power of the heating circuit connected to the boiler is less.

In our example, after setting up and installing in the line d.52 parameter =28, measuring the pressure at the outlet of the gas valve in front of the burner showed a value of 4 mm.water column

Readers in the comments ask the question: “Isn’t such a significant decrease in gas pressure on the burner dangerous for the boiler?” Boilers have many different protections, but there is no protection against low gas pressure on the burner. From this we conclude that low pressure in itself is not dangerous for the boiler. It is important to ensure stable ignition and stable combustion of gas, since the boilers have appropriate protection.

A home mechanic can roughly assess whether the gas valve settings correspond to the factory settings without resorting to measuring the gas pressure on the valve.

To do this, set parameter =9 in line d.00 of the menu and turn on the boiler in the minimum heating power mode. Record gas meter readings. After 15 minutes (1/4 hour), the meter readings are recorded again and the gas consumption during this time is determined. For example, we determined the gas consumption from the meter to be 0.289 m 3 /15 min. Multiply this value by 4 and get gas consumption per 1 hour in minimum power mode 1.156 m 3 /hour. Compare the obtained value with the data from the factory instructions. For example, standard flow rate gas in minimum power mode for the Cheetah 23 boiler MTV is 1.15 m 3 /hour. Gas consumption according to the meter readings approximately corresponds to the factory norm. We conclude that setting the gas valve in minimum power mode meets the requirements of the factory instructions. If not, then the gas consumption is adjusted by changing the parameter in line d.52.

Similarly, based on gas consumption, you can evaluate the setting of the gas valve at maximum power by switching the boiler to DHW mode.

Power 23.3 kW. corresponds to the maximum pressure at the valve outlet 85 mm.water column

U-shaped pressure gauge

A simple pressure gauge for measuring a gas valve can be made from a clear plastic tube, filled with water and bent into a U shape. One end of the tube is placed over the valve fitting and the other is left open. A ruler is used to measure the difference in water levels in the branches of the tube. The measured distance will be equal to the pressure in millimeters of water column - mm.water.st..

A tube with an internal diameter of 8 can be tightly pulled onto the gas valve fitting. mm. For a tube of a different diameter you will have to select an adapter.

At the end of the measurements, do not forget to carefully tighten the screw on the measuring fitting and check its tightness.

Gas boiler Protherm (Proterm) is produced well-known company Protherm, founded in Slovakia more than a quarter of a century ago. The model range of this manufacturer is characterized a successful combination heating power level and energy efficiency indicators.

Model range of Protherm boilers - single-circuit and double-circuit

Gas equipment Proterm is produced by a European manufacturer in several modifications, which allows you to choose the model that is optimal in terms of functionality, as well as practical and most convenient to use.

Wall type

Wall-mounted gas equipment has undeniable advantages, including compact size, external aesthetics, excellent performance properties, the ability to adapt to operation with different energy carriers through a standard replacement of the nozzle, as well as cost-effectiveness.

• "Panther". Inexpensive model with two heat exchangers and water heating. A modern heating device with the ability to operate in a closed system. Possesses reliable protection from freezing, automatic shutdown of gas supply and control of pump operation.

Inexpensive heating device option in the Protherm line

• "Jaguar". A budget option for equipment that does not have a winter/summer mode. Double circuit unit with closed type combustion chamber and control via handles.

A simple model with the minimum required set of functions

• "Cheetah". Double-circuit turbocharged boiler with a power of 11–23 kW and a closed combustion chamber. Even low-power models can heat 10–11 liters of water in one minute. A wall-mounted device in which the movement of the coolant is forced.

Turbocharged boiler with high efficiency

• "Tiger". Features a neat appearance, informative LCD display and very simple controls. It is possible to program it for different operating modes or operate in automatic “comfort” mode. It is possible to automatically regulate the combustion process and is distinguished by a special ignition system.

Compact equipment with different operating modes

Main characteristics of the boiler

Floor type

Floor-standing single-circuit and double-circuit boilers have several advantages that make this type of equipment in demand among consumers. It is impossible to ignore high performance indicators, maximum thermal efficiency, economical fuel consumption, wide functionality and guaranteed durability.

• "Bear". A high-quality cast iron heat exchanger makes the unit durable and very reliable. The model has a “Winter-Summer” mode and convenient traction control. It has automatic regulation of the combustion process and is distinguished by a special ignition system.

The cast iron heat exchanger ensures long-term operation of the boiler

• "Buffalo". Easy to use and durable boiler with high efficiency, capable of operating on different types of fuel. A very powerful unit with a high degree of reliability.

Powerful equipment that can operate on different types of fuel

Main characteristics of the Bison model

Floor-standing boiler with a reliable heat exchanger

Main characteristics of the model

Stationary heating gas boiler

Main characteristics of the model Bear KLOM17

Construction of a Proterm gas boiler

Various modifications have individual characteristics of the device.

Manufacturing boilers using low-temperature cast iron helps to effectively minimize heat losses. A special feature of the design of heating devices of the Proterm brand is also an unusual, fairly environmentally friendly method of burning fuel.

The main components of gas heating equipment are presented:

• ignition system;
• burner;
• heat exchanger.

The heat source is represented by the flame of a burner in which gas is burned, and a heat exchanger is responsible for heating the coolant. The gas supply process is regulated by a thermostat, while combustion products, represented mainly by water vapor and carbon dioxide, are discharged through the chimney system.

Proterm boilers are used for heating and hot water supply

How to connect and configure

Basic conditions for installing a heating system gas equipment from the manufacturer "Proterm":

• installation of the boiler and the necessary auxiliary equipment is carried out in accordance with project documentation, taking into account the requirements of SNiP and manufacturer’s recommendations;
• installation of equipment is carried out in a room specially designed for these purposes, and in case of special modification of the unit - exclusively in well-ventilated outbuildings;
• the installation and commissioning process is carried out by specialists who have completed a training course in the installation and maintenance of gas equipment;
• any boiler malfunctions are repaired by a service organization authorized by the manufacturer of heating and water heating equipment;
• independent installation work entails deprivation of the consumer's warranty on the unit and its repair;
• When unpacking heating equipment, the supplied boiler must be checked for completeness and compliance with the type of fuel used.

Before proceeding with installation, you must carefully read the attached instructions, and during the installation process, all recommendations given in the accompanying documents must be followed. Markings on equipment must not be damaged or removed.

Standard technology for connecting and setting up a gas boiler:

• the unit is fixed to the wall using screws with appropriate spacers;
• connection pipes should not be loaded with a pipe heating system, hot water supply system or gas supply elements;
• the installation size of the tube connections, including their height and the required distance from inlet to outlet, must be strictly observed;
• the hydraulic group is placed on the lower part of the gas equipment, and the system is necessarily equipped with a filler valve and safety relief valves;
• when the maximum pressure inside the system is exceeded, steam or water is released from the safety valve;
• connecting the unit to the heating system presupposes the ability to carry out the full scope of maintenance and repair work;
• water is delivered to the heating system via a filling valve, and a drain device is used to reduce pressure or partially drain the coolant;
• special outlets installed in designated areas of the heating system have full drain and fill functions;
• the pressure of hot water supply to the equipment must exceed similar indicators in the heating system;
• in the “Filling” tap position (hydraulic group), the operation of the system must be monitored using a boiler pressure gauge;
• The valve opens counterclockwise and closes strictly clockwise.

Boiler equipment maintenance items covered by the warranty do not include activities such as deaeration and adjustment of the expansion tank.

Video: Connecting the Proterm boiler

Video: Setting up Protherm equipment

Brief operating instructions

Proper adjustment of Protherm gas boilers ensures optimal temperature conditions in rooms of different purposes and sizes. Among other things, the regulation of the automation of such equipment helps to increase the efficiency of the unit, and also makes its operation reliable and safe. Modern automation solves problems:

• opening and closing valves in the gas supply system;
• the process of starting the unit in automatic mode;
• established or emergency shutdown of boiler equipment;
• adjusting the flame level in the burner using a temperature sensor;
• display on the screen of air temperature, coolant heating level and other parameters.

Instructions for setting up a gas boiler:

• connecting a thermostat to a temperature sensor recorded in the room and setting the required values ​​allows you to obtain a comfortable heating temperature;
• installation of a thermostatic valve on supply pipes in front of heating radiators helps to change the cross-sectional area of ​​the pipe and easily carry out the process of regulating the temperature of the coolant;
• the first start of the system at the maximum temperature allows the coolant used to freely enter the tank, which contributes to its maximum filling;
• Increased efficiency is facilitated by timely removal of scale and soot, as well as monitoring the lack of air in the system and installing a draft limiter;
• regulation of pressure indicators is carried out using special valve regulators, and in order to increase the pressure, a circulation pump is installed;
• reducing the power of the boiler burner is carried out automatically through the service menu, and increasing power is controlled by installing additional radiators or replacing existing ones with the most powerful models;
• many units are characterized by full operation at a pressure of 1.5 atm., and normally this value is 0.3 atm. lower than the indicators in the heating system;
• a slight decrease in the pressure level in the unit is restored during a standard restart;
• automatic selection of the operating mode of the gas boiler helps maintain the desired temperature level even in the absence of consumers in the room for a long time.

The process of turning on the boiler for the first time is accompanied by its short and vigorous operation after the unit is fully connected to the heating system, making it easy to check the correct installation of the boiler equipment and the full functioning of the heating.

Common errors and malfunctions

Some of the most common malfunctions of Proterm gas boilers can be eliminated independently, but the correction of the most complex errors must be entrusted to the professionals of the service center.

Error/malfunction	Code/designation	Remedies
Reduced pressure level in the unit or heating system	F0	Check the functionality of the pressure sensor, make sure there are no cable damages and the integrity of the boiler control board
No flame in the burner	F1	Check the operation of the emergency thermostat and ignition transformer, make sure the gas supply and the integrity of the gas valve, restart
Rapid overheating of a gas boiler	F3	Eliminate blockages in the water filter and pump, check the functionality of the heat exchanger, replace the antifreeze mixture
Open circuit in the temperature sensor circuit	F4	Check the resistance readings on the sensor, make sure the integrity of the cables connecting the control panel and the sensor
Input signals are not recognized	F7	Make sure the information panel is working, check the panel connectors
Opening the NTC sensor circuit and grounding the DHW boiler	F8	Check connections, disconnect and reconnect elements, or completely replace the sensor
There is a short circuit on the traction sensor	F15	Disassemble and clean the terminal connections, clean the tubes, and, if necessary, complete replacement node
Low pressure level inside the heating circuit	F22	Top up the coolant to the required level, make sure the system is completely sealed and there are no leaks
Rapid increase in coolant temperature	F24	Replace insufficiently efficient pumping equipment and get rid of air in the system.
Unsuccessful initial ignition	F28	To eliminate the error/malfunction, it is necessary to involve specialists from the service center
Activating fan anti-freeze protection	F33
Pressure sensor error repeat	F75

Modern heating equipment from a manufacturer from Slovakia, the category of which includes single- and double-circuit gas boilers Protherm, is distinguished by its high reliability and variety of models. These high-quality and inexpensive boilers of European quality from the “middle class” are deservedly popular and are invariably in demand by domestic consumers.