The well-known Slovak company Protherm has gained confidence due to the high quality and reliability of the equipment produced. A careful study of the needs of customers, trends in demand for various models of manufactured devices allowed the company to gain a leading position in the market.

The company produces dozens of: floor-standing and wall-mounted, and, with open and closed combustion chambers. Proterm double-circuit wall-mounted gas boilers, to which this article is devoted, have gained particular popularity.

Description of the double-circuit boiler Proterm

Boilers that have the function of heating domestic water are called double-circuit, because they heat water for two systems - a heating circuit and a hot water supply system (DHW).

The DHW system in such boilers, if necessary, can function separately from the heating system. This mode is necessary to supply the house with hot water in the summer.

Wall-mounted double-circuit models are presented in a wide power range - from 11 to 30 kV, which allows the buyer to choose the best option depending on the heated area.

In wall-mounted boilers, a mechanism is provided for releasing the combustion chamber from exhaust gases. This is done in two ways. The first is the forced removal of residual gases using a fan, such a combustion chamber is called closed. The second option - the gases are given the opportunity to independently leave the room through the chimney, this chamber is open.

All products of the Proterm company are completed with the most modern systems of automatic control, management and protection.

Distinctive features

By installing a double-circuit gas boiler Proterm in your house, you will become the owner of a real home boiler room, which, in addition to regular functions, will provide your household with hot water.

The main distinguishing features of the Proterm gas boiler line are listed below:

• economy, ease of use;
• a large selection of models - by price, power, functionality, protection capabilities;
• price-quality ratio - one of the best among manufacturers of similar equipment;
• high efficiency (more than 90%);
• models are available with a built-in boiler.

Important! Proterm gas boilers are adapted for Russian conditions - they can function normally even with reduced pressure of gas or water in the mains.

Gas boilers produced by Proterm during operation will not disappoint you and will justify the wildest expectations.

Model range of boilers Proterm

The range of heating boilers offered by Proterm is wide and varied. The product catalog includes:

1. electric boilers;
2. solid fuel, working on wood and coal;
3. universal units that can run on gas and diesel fuel;
4. high power industrial boilers;

The range of Proterm gas boilers includes two types: and. The company manufactures gas boilers in the range from small wall-mounted devices weighing 30 kg to heavy floor units, the most famous of which is the Proterm double-circuit gas boiler model Medved 30 KLZ weighing 155 kg.

As for double-circuit wall-mounted devices, they are produced in 5 series:

• Panther (Panther).
• Jaguar (Jaguar).
• Lynx (Rys).
• Cheetah (Gepard).
• Tiger (Tiger).

Each series includes several models that differ in power, performance, price and some other parameters. In particular, the devices of the Panther, Cheetah and Tiger series include models with both closed and open combustion chambers. A typical representative is a double-circuit gas boiler of the company Proterm Panther 25 KTV with a power of 25 kW, in which there is a device for the forced removal of exhaust gases from a closed chamber.

Specifications

The main technical characteristics, for ease of comparison and speeding up the search for the necessary information, are summarized in Table 1.

Model	Panther	Jaguar	Cheetah	Tiger	Lynx
Characteristic	25 KOV, 25 KTV, 30 KTV	11 JTVs, 24 JTVs	11MOV, 11MTV, 23MOV, 23MTV	12KOZ, 12KTZ, 24KOZ, 24KTZ	18/25 MKV 25/30 MKV
The combustion chamber	T-closed O-open	closed	T-closed O-open	T-closed O-open	closed
RH temperature, °C	35-85	30-85	30-83	45-85	30-85
DHW temperature, °C	38-60	30-64	38-65	40-60	30-64
Expansion tank OV, l	7,0	7,0	5,0	8,0	8,0
expansion DHW tank, l	–	–	–	2,0	5,0
DHW capacity, l/min	up to 17.0	up to 10.7	up to 11	up to 12.6	up to 14.2
Natural gas consumption kg/h	2,84 – 3,44	–	2,73	1,41 – 2,84	–
Consumption of liquefied gas, kg/h	2,08 – 3,21	–	1,9	0,91 – 2,08	–
Consumption of natural gas DHW cubic meters / hour	–	2,73	–	–	1,39-3,08
Consumption of liquefied gas DHW, kg/h	–	1,02	–	–	1,02-2,26
Consumption of natural gas RH m3/hour	–	1,39 2,73	–	–	–
Consumption of liquefied gas OB, kg/h	–	0,55 1,02	–	–	–
Storage tank, l	–	–	–	45	–
Weight, kg	34 – 41	29 – 30	31 – 34	70 – 71	35 – 36
Dimensions, mm	800х338*440	700x280x410	740x310x410	900x410x570	700x280x390
Price, thousand rubles	45 – 53	27 – 32	34 – 39	50 – 130	54 – 56

Abbreviations: HW - heating water, DHW - hot water supply.

Deciphering the code in the model name:

1. the two-digit figure corresponds to the rated power input in kW;
2. the first letter - in combination with the third indicates the model;
3. the second letter is the type of combustion chamber: O - open, K, T - closed;
4. the third letter is the boiler type: V, Z - double-circuit, O - single-circuit.

In addition to the parameters indicated in the table, all wall-mounted double-circuit boilers have a number of other characteristics. In particular, they have the following protection systems:

• safety valve to discharge the coolant when the pressure in the system rises;
• protection of the circulation pump against jamming;
• protection of water pipes from freezing;
• gas control - stops the gas supply to the burner if the flame suddenly goes out;
• air outlet - getting rid of the trapped air from the heating system;
• protection of the boiler against overheating with a thermostat.

The electronic control system for gas boilers performs the following functions:

1. microprocessor control;
2. device status control;
3. regulation of indoor air temperature;
4. display of current temperature readings and fault codes.

Service center maintenance

Every year, preferably before the first start after the summer break, it is recommended to invite a specialist from a certified service organization to inspect and test the boiler. During a preventive inspection, the condition of the gas burner is checked, power is adjusted, burner nozzles and heat exchangers are cleaned. A particularly important part of the inspection is to check the operation of the emergency thermostat and the combustion chamber thermostat.

Attention! When cleaning the nozzles of a gas burner, in no case should they be allowed to change their inner diameter!

Boiler maintenance by the user

Cleaning the casing of the unit without removing the protective cover. Must be carried out after disconnecting the device from the network. Power supply is allowed only after complete drying.

The water pressure in the heating circuit must be checked weekly. If necessary, carry out make-up after the unit has cooled down below 400°C.

It is necessary to regularly, at least once every three months, check the tightness of the connections of the chimney system, the cleanliness of the filter and the sump, and remove dirt if necessary.

If a gas leak is detected, the device must be switched off immediately, the gas valve closed and a specialist service organization called. It is not recommended to repair the unit yourself. For example, the instruction manual for the Gepard wall-mounted double-circuit gas boiler manufactured by Proterm does not recommend trying to fix the malfunctions on your own, so as not to lose the company's warranties.

When buying any heating equipment, the user receives instructions. It describes all the points that relate not only to the installation of the unit, but also to its operation. Boiler Proterm Skat 9 kW is no exception. Of course, for some reason the instruction was lost, then it will not work to start heating the house. After all, the electric boiler must be properly configured. There are certain rules for the installation and operation of an electrical unit. They must be observed. Otherwise, the equipment will not work correctly.

The advantage of the electric boiler Proter Skat

The Proterm Skat unit has a number of advantages. Such heating equipment has become a good alternative to gas heating appliances. The popularity of Proterm Skat boilers is increasing every year. After all, such units are ideal for heating houses that are not connected to the main gas pipeline. Electric boilers of this modification are simply indispensable for country cottages with periodic or seasonal residence.

Among the advantages of such units, the following should be highlighted:

It is worth noting that Proterm Skat electric boilers have proven themselves during their existence as economical and safe heating devices.

Installation Features

Boilers Proterm Skat 9 kW are supplied with all necessary fasteners and elements. Besides the kit includes an instruction that describes the process of connecting and setting up the unit step by step. It is worth noting that models that differ in power have exactly the same principle of installation, operation, and configuration.

Before installing heating equipment Proterm Skat, it is necessary to coordinate all work with electrical distribution services.

Electric boilers Proterm Skat with a power of 9 kW can be connected to a conventional 220V power supply. Installation of such heating equipment is carried out using a mounting plate. Such a unit does not have certain restrictions on the choice of installation location. Of course, there are some requirements - you need free access for service, maintenance, adjustment and repair of heating equipment.

How to install

The Proterm Skat electric boiler is connected to the pipe system using branch pipes. The heater is connected in such a way that, in the event of malfunctions during operation, the coolant can be freely drained without affecting the entire system. Additional valves allow you to fill the system with coolant and drain it. also, in order to exclude freezing of water in houses with seasonal residence during cold periods, experts recommend removing the coolant completely from the system before the temperature drops.

The Proterm Skat boiler is connected to the mains through a power line connected separately. The network cable is connected to the terminals, which are located in the lower corner of the case. All screws on the connectors must be carefully tightened. A boiler with a power of 9 kW can be connected to a single-phase network.

How to use the Proterm Skat boiler

The operation of the Proterm Skat electric boiler does not cause any particular difficulties. After all, such heating equipment is equipped with systems for control and regulation. In order for the device to start working, you need to do just a few simple steps:

1. Plug the unit into the mains.
2. On the control panel of the heating equipment, select the required temperature mode.
3. Adjust the power of the unit.
4. Make more precise temperature settings.
5. If necessary, change the pressure level in the system.

After the done manipulations, you must press the "Start" button. That's all, the Proterm Skat boiler is ready for work. During the first few days of operation, it is worth monitoring the operation of the unit and, if necessary, adjusting the temperature regime. This will identify some problems in the operation of the unit caused by the presence of air jams in the system.

Electric boiler Proterm The slope for heating is the most common model in Russia among all manufacturers on the domestic market. The good quality of the European assembly and the reliability of components, a lot of positive feedback on 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 Proterm of the Skat series, the model range on the market, and connection features. We will also consider problems and malfunctions that may arise during the operation of the device, errors and methods for their elimination.

Model range of electric boilers Proterm Skat, type K (KR)

To date, the Slovak company Protherm is represented on the Russian market not only by its boilers, but also by eight models of electric boilers of the Skat K (KR) type, which differ 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 of ​​​​30 to 280 m2. Among them, both single-phase - with the ability to connect to a 220 V power supply, and three-phase - 380 Volts stand out.

Electric boiler Proterm: photo

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

- low power: Skat 6K and 9K;
- medium power: Skat 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 multidirectional arrows, on the front panel of the heating apparatus.

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

- traditional mode for heating (25-85 ° С);
- "warm floor" mode (30-45 ° С);
- the mode of preparation of hot water 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, all Protherm electric boilers 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 houses 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. We look at the table.

Proterm Skat: cable cross-section, energy consumption

Features of the electric boiler device Proterm

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

1. Cylindrical copper heat exchanger 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;
- 3 bar safety valve;
- automatic air vent.

In addition, an NTS temperature sensor is installed on the heating circuit line, as well as an emergency sensor that protects the unit from overheating. There is a system for protecting the device from freezing. and from blocking the circulation pump.

Electric heating elements are mounted in the heat exchanger of the Proterm boiler, from above and below. Depending on the model, the number of heating elements may be different. For example, in the Skat 6K, 9K, 12K and 14K devices, two blocks of heating elements are installed, in Skat 18K and 21K - three heating elements, in 24K and 28K - four. For each model, the blocks of heating elements have different capacities.

I propose to disassemble in detail the internal structure of the Proterm Skat mounted electric boiler according to the instruction diagram:

Internal device "Protherm Skat" according to the instructions

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

Electric boiler connection: water circuit, cable

Connecting an electric boiler Protherm

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

2. The heating water circuit is connected using two 3/4″ threaded fittings. On the left is the return line (heat carrier inlet to the boiler), on the right is the straight line (outlet).

3. Nearby are located: an overflow for a safety valve, a drain valve, as well as connectors for connecting an electrical cable of different sections. You can monitor the pressure in the heating system according to the pressure gauge, which is also located in the lower part of the device.

Electric boilers Proterm Skat: specifications, dimensions

Proterm boilers have rather compact dimensions of 410 x 740 x 310 mm, which allows them to harmoniously fit into the interior of even a very small kitchen or boiler room. See the table for other specifications.

Technical characteristics of electric boilers Proterm

Errors and malfunctions of the Proterm electric boiler: troubleshooting methods

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

These codes tell us about a malfunction of the NTS temperature sensor. You may need to replace it or replace the electronic board. But first, check the cable connections for operability.

2. Error F20.

The emergency temperature limiter or thermal fuse is faulty. Try shorting them one by one. If the boiler shuts down again, replace the defective element.

3. Error F22.

This error indicates a "dry" start of the electric boiler. Add water pressure to the system, it must be at least 0.6 bar. Air may also be present in pipes and radiators.

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

5. Error F63. No connection to EEPROM. Reset the settings to factory settings.

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).

Wiring diagram for boilers Proterm Skat

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

Advantages of electric boilers Proterm:

— build quality and reliability in operation;
— a wide range of different power;
— modern security system;
— high efficiency of 99.5%;
- the ability to connect additional options and equipment;
- good feedback from buyers and specialists.

Disadvantages of the Proterm brand electric boiler:

- lack of a room apparatus in the configuration;
- there are no models with a built-in boiler for heating domestic water;
- it is not allowed to use antifreeze liquid as a coolant;
- price from 35,000 rubles.

We have examined in detail electric boilers Proterm Slope for heating, the entire range and specifications. Having disassembled the internal device according to the operating instructions, we revealed the main advantages and disadvantages of these devices. And also focused on possible errors in the event of malfunctions 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 large houses with several sanitary facilities for heating, single-circuit gas boilers with a storage boiler for preparing hot water are more often used. Such a system provides more comfortable use of hot water in the house.

In the apartment of a new building with apartment heating, a double-circuit gas boiler Protherm Gepard 23 MTV is installed. Next, consider setting the boiler power using the example of this apartment.

Gas boilers of the Protherm Gepard series (Cheetah) are almost a complete analogue (simpler version) of Protherm Panther boilers (Panther). This article describes in detail the adjustment, setting the power 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 well-known Vaillant brand. Vaillant gas boilers are in a higher price category due to the use of better materials for the manufacture of heat exchangers. But in terms of design, other parts used, and service menu settings, Vaillant brand gas boilers are very similar to Protherm boilers.

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

The internal arrangement of the double-circuit gas boiler Protherm Gepard 23 MTV and Panther 25.30 KTV (Panther)

Causes of clocking (pulse operation) of the boiler in heating mode

The instruction manual states that the useful heat output of the Protherm Gepard 23 MTV boiler is adjustable from a maximum of 23.3 kW. up to a minimum of 8.5 kW. The factory setting for heating power 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 heat output of 4 kW.

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

How to determine the maximum thermal output of the heating circuit? On the websites of manufacturers and sellers of radiators, we find the thermal power of each radiator installed in the house. In the catalogs of manufacturers, 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 by the parameter “75-65/20”. The sum of the capacities of all radiators connected to the boiler will be equal to the maximum heat output 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 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 capacity of 15 kW. The power of the boiler burner is automatically regulated 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.

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

By the way, about other disadvantages of a too powerful boiler. The service manual for the Protherm Gepard 23 MTV boiler indicates its efficiency in heating mode: 93.2% at maximum heat output (23.3 kW.) and 79.4% when operating at minimum power (8.5 kW.) Imagine how the efficiency will decrease even more if this boiler has to work with a heating system with a capacity of 4 kW. Please note that a double-circuit boiler during the year works most of the time in heating mode, with a minimum power. At least 1/4 of the gas used for heating will literally fly out uselessly into the pipe. This will be a retribution for installing overly powerful equipment for heating and hot water 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 cyclicity, impulsiveness of work or, as the people say, “boiler clocking” manifests itself in the fact that the burner of the boiler, after switching on, quickly turns off upon reaching the set temperature in the straight pipe at the outlet of the boiler. But at the same time, the radiators remain not warmed up 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 of time than a less powerful heating circuit can accept. Therefore, the water temperature at the outlet of the boiler rises rapidly and it turns off earlier, not having time to heat the radiators.

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

A high-power heating system has an increased diameter of pipes and a volume of radiators, which means less hydraulic resistance. In large systems, water does not flow exactly the same, it flows faster, at a higher flow rate (liters per second). During the rapid passage through the boiler heat exchanger, each liter of water has time to heat up only 15-20 degrees about 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.

In low-power heating systems, the pipes are thinner, the radiators are smaller, the hydraulic resistance is higher and the water flows more slowly. If you heat slowly flowing water with the same power, then the water that enters the heat exchanger immediately, at a time, will heat up by 40-60 degrees about 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 cycle of clocking. 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 by electronics according to a complex algorithm, which takes into account the time from the start of the burner, the temperature, the rate of temperature change in the heating circuit, and the temperature difference in the direct and return pipes. I do not know all the subtleties of the control algorithm, but automation, without additional service settings, does not ensure the normal operation of the boiler at a power below the minimum, which is indicated in the technical specification.

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

Clocking reduces the life of the boiler and increases gas consumption

Any person, even not being a mechanic and electrician, knows that the most difficult operating mode for equipment is the moment of starting, turning on mechanical and electrical equipment. During the start-up period, the greatest wear is observed, most often failures occur. An increase in the number of starts as a result of cyclicity, most of all eats up the service life of very expensive parts of the boiler - gas and three-way valves, a circulation pump, an exhaust gas fan.

For ignition at the time of start, the maximum amount of gas is supplied to the burner. Part of the gas, until the moment the flame appears, literally flies into the pipe. Constant "re-ignition" of the burner further increases the gas consumption and reduces the efficiency of the boiler.

Some cyclic operation of the gas boiler is provided for by the normal mode of its operation. For example, temperature control in a room without a thermostat or with a two-position thermostat occurs due to the periodic switching on and off of the boiler burner.

The task of regulating the power of the boiler is to to exclude excessive cyclicity - clocking caused by the 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 power of the boiler burner to a level at which the automation can ensure the normal operation of the boiler with the heating system connected.
2. Increase the maximum power of the heating circuit by installing additional radiators or replacing existing ones with more powerful ones.

You can apply both methods at once. Reduce the difference between the capacities 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 margin for thermal power. As a result, in order to maintain the required temperature in the premises, in frosts it is necessary to supply heating water to the radiators with a maximum temperature of more than 75 about C. At this temperature, decomposition (combustion) of particles of organic dust occurs on the radiators and an unpleasant smell appears in the rooms. In addition, the high temperature of the coolant reduces 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 regime even at the maximum temperature of the heating water. Before adjusting the power of the boiler, I recommend determining the need, and, if necessary, increasing the power of the radiators by 30 - 100%, at least in the coldest rooms.

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

The main advantage of low-temperature heating is the possibility of using modern technologies. We are talking about condensing boilers, solar collectors and heat pumps. They require that the system has a low heating water temperature.

When replacing radiators, it must be taken into account that the expansion tank built into the boiler is designed for a water volume in the heating system of not more than 50 liters for the Gepard boiler, and 70 liters for the Panther. If the amount of water as a result of installing new radiators turns out to be greater, then an external expansion tank must be installed.

An external expansion tank is connected to the return line of the heating system closer to the boiler. The built-in expansion tank, in this case, is best taken out of action.

Buy radiators in your city

Heating radiators

How to adjust the power of the gas boiler burner

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

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

In modern Protherm Gepard and Protherm Panther boilers, the basic settings Honeywell gas valve are changed with 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 the Honeywell gas valve, installs SIT 845 Sigma gas valve. The settings for the maximum and minimum burner power for this valve are made by turning the adjusting screws located on the valve body. See page 2 below for details on adjusting the SIT gas valve.

The electromechanical devices of the boiler (electrovalves, stepper and conventional electric motors, sensors) are controlled by the microprocessor of the electronic control board in accordance with the programmed program. The settings of the boiler operation program 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 boiler Protherm Gepard (Cheetah)

The Protherm Gepard boiler is controlled from the control panel through the public user menu. How the owner manages the boiler is written in the instruction 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 the code entry by pressing the mode button (1). After that, the display will show the 1st menu line in the form of symbols interspersed on the screen: d. 0.

- Using buttons + or — d.**.

- Press the “mode” button to change from menu line number designation “ d.**” to the parameter value (the display alternates between the “=” symbol and the parameter value). - 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 reset the display, press the "mode" button for 3 seconds. After 15 minutes of inactivity, the display returns to normal on its own.

Access to the service menu of the boiler Protherm Panther (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 available when entering the code.

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

After that, 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 line number: d.**.

To change the value of a parameter 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 reset the display, press the "mode" button for 3 seconds. After 15 minutes of inactivity, the display returns to normal on its own.

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

Description of some service menu commands

Line d.00- maximum heat output (useful 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-out time of the circulation pump in heating mode, min., choose a value between 2 and 60 min. Factory setting =5

Line d.02- Time delay after heating operation for anti-cycling, min. Prevents the burner from being switched on and off frequently 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 the anti-cycling time) prevents a quick restart in heating mode after the burner has stopped at the set temperature or at the command of the room thermostat TA. It depends on the heat carrier temperature setting: — at 80 °C, it is set for 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 varies proportionally in the range from 1 min. up to the established d.02 parameter.

Dependence of the anticycling time on the setting of the parameter value in the line d.02 and heating temperature

Line d.18- operating mode of the circulation pump; Operating mode options: = 0 - with burner: the pump works together with the burner. =1 - continuously; with RT thermostat: the pump is switched on by the command of the room thermostat. =2 - permanent in winter: the pump runs all the time while the boiler is in the WINTER mode. Factory setting =1.

Line d.19- the speed of the circulation pump; Options for the operating mode: =0 - the burner is working; speed in heating mode is selected automatically, maximum - in DHW mode, minimum - if the burner is 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 DHW mode. Factory setting =2. Each time the burner is started in heating mode, the pump is switched on at a limited speed for at least 30 seconds. If the temperature difference between supply and return reaches 20 OK, the pump switches to maximum speed until the burner is switched off (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 flow of hot water 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 at the outlet of the boiler, in the direct pipeline of the heating system, about 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 pipeline of the heating system, about 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! Value range: 0 - 10. In the range: =0 - 4 - ionization current is sufficient - the flame is available; \u003d 4 - 8 - ionization current is slightly below a sufficient level - there is a possibility of losing the flame; =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 smaller the value of the parameter, 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 smaller the value of the parameter, the weaker the intensity of gas combustion.

Line d.62- lowering the heating temperature at night. Setting range 0 - 30 about 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 value set in d.62. Those. during the day the temperature of the heating water and the temperature in the house is higher, and at night it is lower. You can set it up the other way around.

Line d.67 - Display of the time between switching on the boiler. This parameter displays the cooling down time in minutes before the boiler is switched on again. The countdown of minutes starts at the moment the boiler is switched off due to the excess of the maximum 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 start is calculated on the basis of the set heating water temperature of the boiler 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 requirements for heating in one or another circuit. Position of the three-way valve: =0 - the valve is controlled based on standard requirements from the control system; \u003d 1 - the three-way valve is set to the middle position to empty the boiler (both heating and hot water); =2 — the three-way valve is set to the position of the heating agent.

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

Line d.88 - Water hammer protection in the distribution of cold water (for boilers KTV and KOV) . The ability to change the parameter leads to the elimination of the reaction to water hammer, which occurs in some cases in cold water pipelines. For example, at the moment the automatic valve closes in the toilet flush tank (or washing machine or dishwasher), a pressure surge (water hammer) may occur in the water pipes. This may result in a false operation of the tap water flow sensor (turbine), which will lead to a short-term unwanted activation of the boiler's DHW mode. 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 the value =1 - activation of the ignition process for heating tap water at a flow rate of 3.7 l/min In this case, the duration of the flow must be at least 2 seconds.

Line d.90 - Identification of the connected room sensor. With this parameter it is possible to make sure that the room regulator is connected correctly, or the communication between the room regulator and the boiler is working properly. Note: This description only applies to controllers that support eBus communication. In the event that a conventional controller with a switching relay has been 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. In case the setting leads to incorrect operation or failures, it is possible to restore the factory settings of the boiler. Setting: =0 - replacement with factory settings will not be performed; =1 - will return to the factory settings Note: when you enter the setting of this parameter, the display always shows the parameter "0"

How to eliminate boiler clocking in heating mode

Adjustment of the maximum heating power of the 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 display the value of the boiler power parameter, 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 heaters connected to the boiler. This setting will only work in heating mode.

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

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, we find the line d.0, press the "mode" button and look at the display the value of the boiler power parameter, kW. For example, the factory setting =15 will be visible. Using the "-" button, set the new value of the boiler power = 11.

I recommend trying to set the boiler power to 20 - 30% less than the heating circuit power, for example, d.00 = 9 kW. This power should be enough to compensate for the heat losses of the house, since the power of radiators, as a rule, is chosen with some margin.

Increasing anticycling time

At the second stage, increase the anti-cycling 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 set on the display 70 about C, the burner can be restarted after 4 - 5 minutes, not earlier.

In line d.02 set a new anticycling time value, for our example, the maximum possible = 60 minutes. Line d.67 shows the time in minutes until the next switching on of the boiler. Breaks in the operation of the burner became approximately 10 minutes long. Twice as much as the factory setting, which is still too common.

Increasing the anti-cycling time causes the burner to start later, at a lower heating water temperature. The heat input from the boiler to the heating circuit is reduced.

In this way, selecting boiler power and anti-cycling time settings through the service menu, ensure that the duration of the cycle between switching on the boiler burner is at least 15 minutes. That is, the boiler should turn on within one hour no more than four times.

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

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

Setting the Gepard or Panther gas boiler to power below the minimum

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

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

It should be noted that setting the boiler power according to the method described below is also useful in other cases, since it allows, through the 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 work for setting the minimum burner power, necessary:

• Fully open the thermostatic and other valves on the radiators, and set the room thermostat to the maximum temperature. The thermostat that controls underfloor heating is set to the maximum allowable temperature so as not to overheat the floors.
• In the user menu of the boiler, set the maximum operating temperature, which the owners set in the very cold, adding another +5 °C. Usually it is not less than 65 °C. If the owners do not remember it, or on a new boiler in the menu, the factory setting of the maximum temperature is set to 75 °C. The boiler burner should automatically turn off 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.

Having removed the front cover of the boiler, we visually observe the size of the flame in the burner. In our example, the display showed the factory setting, the number = 72, and the height of the flame in the burner was large enough.

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 height of the flame in the burner. This indicates that the useful output of the boiler with the specified setting will be greatly reduced.

Further, the temperature increase in the direct heating pipeline at the outlet of the boiler is observed on the display. Typically, the temperature rise stops when it reaches some value less than the set value, for example 52 °C. The boiler is running but the temperature is not rising (or changing very, very slowly). This means that a power balance has been reached between the boiler and the heating system at this steady water temperature. At this moment, we increase the parameter in line d.52 of the service menu, set a new value = 30 - the temperature starts rising again and stops again, for example, at 63 °C. Again we add the value of the parameter in the line d.52 =35 and so we 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 the maximum operating temperature. The boiler output will be set to the minimum required for operation with the connected heating circuit. In this case, the cycling of the boiler will be minimal.

If the radiators do not warm up well in height, the temperature difference in the direct and return pipes at a maximum temperature is more than 15-20 °, then the bypass valve actuation pressure is increased. See below for how to adjust the bypass valve. The temperature of the water 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 setting of the gas valve in line d.52 must be repeated.

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

It should be noted that the gas valve adjustment method described above, which allows balancing the boiler power with the heating circuit power through the experiment, is not included in the recommendations of the boiler manufacturer. This is the idea of ​​the author of the article, successfully implemented when setting up autonomous heating systems with gas boilers.

Gas valve factory calibration

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

The boiler manufacturer prescribes to calibrate the minimum power on the gas valve as follows:

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

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

call string d.52 service menu. And changing buttons + and — string parameter value d.52, set the minimum pressure at the outlet of the gas valve, indicated in the boiler manual. For example, for the Gepard 23 MTV boiler, the minimum pressure in front of the burner is 1.5 mbar or 15.5 mm w.c..

This setting will ensure the operation of the boiler with a minimum power specified by the manufacturer - 8.5 kW. To the obvious question of what to do if the power of the heating circuit connected to the boiler is less, the service instructions of the boiler manufacturer do not give an answer.

In our example, after setting and setting in the line d.52 parameter =28, pressure measurement at the outlet of the gas valve in front of the burner showed a value of 4 mm w.c.

Readers in the comments ask the question: “Isn’t such a significant decrease in gas pressure on the burner dangerous for the boiler?”. There are many different protections on the boilers, 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, as the boilers have appropriate protections.

The home master can roughly estimate whether the gas valve settings correspond to the factory settings without resorting to measuring the gas pressure at the valve.

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

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

Power 23.3 kW. corresponds to the maximum pressure at the outlet of the valve 85 mm w.c.

U - figurative manometer

A simple manometer for measurements on a gas valve can be made from a transparent plastic tube, filled with water and bent in the shape of a U. One end of the tube is put on the valve fitting, and the other is left open. The ruler measures the difference in water levels in the branches of the tube. The measured distance will be equal to the pressure in millimeters of the water column - mm w.c..

On the gas valve fitting, you can tightly pull a tube with an inner diameter of 8 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 nipple and check its tightness.

Electric boilers are in demand among owners of suburban housing, residential cottages and other non-gasified buildings. They are characterized by good functionality and allow you to heat any buildings that are not connected to gas mains. Their typical representative is the Proterm electric boiler - this is a device from a well-known manufacturer, characterized by high build quality and decent performance.

We decided to devote this review to Protherm electric boilers. In it we will tell:

• About the Skat lineup;
• On the technical characteristics of the equipment;
• About popular models;
• About user reviews.

Equipment from such a well-known manufacturer really deserves special mention, so we will tell you everything we know about Proterm boilers.

Features of Proterm electric boilers

By installing such an electrical unit in your household, you are making an excellent choice. Rather than buying equipment from dubious brands, it is better to overpay a little and take a really worthwhile thing from a well-known manufacturer - the performance of the entire system depends on the quality of the boiler used. Moreover, Protherm has extensive experience in the production of electric heating equipment.

There is only one model range - Skat.

Heating a home that is not connected to gas mains is always a big problem. Electric boilers existing on the market are either high in cost or cannot boast of sufficient functionality. In this case, you always pay attention to small-sized and neat gas models that operate in automatic mode and do not clutter up the space. Protherm is ready to offer owners of suburban housing similar solutions, but powered by the mains.

Protherm electric boilers are a unique solution with proper efficiency. They are installed both in residential and non-residential buildings, regularly generating heat. They are presented by a single model range called Skat - there are samples with a thermal power of 6 to 28 kW to choose from. Thanks to this, they can heat rooms up to 280 square meters. m.

What are good?

• Simple single-circuit design - if you like simple and reliable equipment, you will definitely like the products of this brand;
• Wide power range - it is possible to choose a device that is suitable in terms of power and at its price;
• High efficiency - efficiency, according to the manufacturer, is 99.5%. This means that almost all of the consumed electricity is converted into heat, without significant losses;
• Absolutely silent operation - even if the equipment is in the bedroom, it will not interfere with a good night's sleep;
• The presence of precise temperature control - create a comfortable and cozy atmosphere in your home;
• The presence of universal models - they can operate from single-phase and three-phase networks with a voltage of 220 or 380 V;
• Easy installation - you can handle the installation yourself, without resorting to the help of specialists.

Prices range from 37,900 to 47,000 rubles - this is the official price from the manufacturer as of April 2016. In some other stores, it may differ up or down (usually up). But nothing will stop you from buying a Proterm electric boiler in the official online store - this is the most economical and reliable option.

The cost of equipment may seem high, but Protherm is always responsible for the quality of its products.

Specifications and appearance

The Proterm electric boiler will fit into any interior due to its small size and wall placement.

As befits good equipment from a well-known brand, Proterm electric boilers are enclosed in neat small-sized cases. Thereby they can fit into any interiors even the most sophisticated ones. Case dimensions - height 740 mm, depth - 310 mm, width - 410 mm (dimensions are identical for the entire Skat model range). Inside we will find everything that is needed for the operation of the heating system:

• Circulation pump;
• Automatic air vent;
• Expansion tank for 7 liters.

No need to worry about installing the piping - just connect pipes and radiators, fill the system with coolant, after which you can start testing.

Models with a power of 6 kW and 9 kW can operate from both single-phase and three-phase networks. More powerful are three-phase. The equipment is not afraid of power surges and does not overload the network - a stepwise increase in power is provided here. The maximum current in the circuit during the operation of heating elements is up to 50 A. The maximum coolant pressure in the system is 3 atm, the temperature is up to +85 degrees.

When connecting Protherm electric heating boilers to the electrical network, make sure that the cross section of the wires corresponds to the power consumption.

The layout of the supply lines of electric boilers Proterm, as well as their dimensions.

Protherm electric boilers are endowed with convenient control panels. They are LED indicators and liquid crystal displays. Self-diagnostic systems are provided - error codes are displayed on built-in screens. Thermostats are used to create a comfortable atmosphere. Security systems are represented by an overheating sensor, frost protection, a pressure sensor, a safety valve and an anti-blocking system for the circulation pump.

An interesting functionality is the ability to connect external storage boilers, which are purchased separately.

Popular Models

The Protherm Skat 9 KR 13 electric boiler is the most purchased. It is used for space heating up to 90 sq.m. m.

As we have already said, Protherm electric boilers are represented by the only Skat line. Therefore, all equipment has similar characteristics, differing in electrical power and current consumption - all other data are identical, up to dimensions and weight. As for the most popular models, they are 9 kW, 12 kW and 21 kW designs..

In addition, the Skat range includes models with a capacity of 6 kW, 14 kW, 18 kW, 24 kW and 28 kW - the maximum heating area depends on the power (heat losses and the possibility of connecting a boiler must be taken into account in the calculations).

Instructions for use

When installing and setting up the device, you must follow the safety regulations and use protective equipment. The boilers are mounted in a dry place, away from flammable structures, emergency exits, air conditioners and other electrical appliances. Do not install in places where water can get on the equipment. Also, operation in freezing rooms is not allowed.

Mount the equipment on solid walls, taking into account the weight. Heating pipes must fit evenly and without distortions. Connection to the mains is carried out using wires suitable for the cross section, directly to the electrical panel, through additional RCDs. To protect against electric shock, the equipment must be grounded. You also need to make sure that the supply voltage meets the established standards. External components and modules are connected in accordance with the instructions.

Table for calculating the required wire cross-section and fuse rating depending on the power

Ideally, the installation should be carried out by certified specialists, but if you follow the instructions and follow the safety rules, nothing bad will happen.

During the operation of the equipment, it is necessary to monitor the temperature in the system and respond to possible errors. If the equipment is working properly, users can only set the desired temperature. The choice of the temperature of the heating circuit and the temperature in the external storage boiler (if any) is made using the buttons on the control panel - the control of parameters and errors is carried out using the LCD display.