Why do you need automation for gas heating boilers? Automation for gas heating boilers: device, principle of operation, overview of manufacturers Honivel automation for gas boilers

04.11.2019

Household heating appliances operating on liquefied or natural gas do not require constant attention and control from the owners. This task is performed by automation for gas heating boilers.

Electronic and mechanical control units integrated into the heat generator regulate combustion and help maintain the required temperature in the heat carrier.

Automation works properly, accurately and reliably, increases the efficiency of heating equipment, contributes to the reasonable consumption of energy resources and makes the operation of the heating system simple, comfortable and absolutely safe.

The automatic system protects heating installations from overloads and activates an emergency shutdown of the gas supply in case of sudden force majeure. Additionally, the technique regulates the level of combustion intensity and current fuel consumption, allowing owners to save money on space heating.

The automatic node has flexible settings and allows the owner to set the most convenient operating parameters for the equipment

According to the basic principle of operation and design features automation for gas-powered equipment is divided into:

devices with energy dependence;
energy independent devices.

Systems of the first type are complex electronic units and for correct operation, which need an uninterrupted supply of electricians. The second types of devices are simplified mechanical structures that do not require energy supply.

View #1 - volatile products

Volatile module- This is a small electronic device that responds to the supply of a fuel resource. Turns on and off at the moment of activation or closing of the main gas cock. It features a complex design and a large number of elements and microcircuits.

Allows hosts to perform the following tasks:

activation or termination of gas supply;
starting the heating system in automatic mode;
adjustment of the power level of the base burner (due to the presence of a thermostat);
turning off the operating boiler both in emergency situations and within the user-defined mode;
display of current indicators on the display (general level of air temperature in the room, the mark to which the working coolant is warmed up, etc.).

More "fancy" modules have additional functionality and offer users unlimited and most convenient conditions for monitoring the operation and controlling the unit. Electronic panels provide full protection of the heating equipment from malfunction and prevent the boiler from freezing.

If the temperature drops sharply in the room, the "smart" system itself starts heating equipment and turns it off when the home is filled with comfortable warm air.

The option of self-diagnosis, available for individual modules, prevents malfunctions and contributes to the timely detection of faulty parts and assemblies in the system. It makes it possible to notice a breakdown as early as possible and replace some small element even before it creates a real problem for the equipment.

Small breakdowns of the heating system eventually turn into global difficulties and entail financial expenses associated with the repair and dismantling (full or partial) of the equipment. Self-diagnosis helps to identify a malfunction and makes it possible to eliminate it in a timely manner

Electronic automation, which is responsible for the safe operation of the equipment, ensures the uninterrupted operation of the boiler, prevents the system from overheating and shuts off the gas supply in the event of a drop in draft or an extinction of the flame in the burner.

The assortment line of volatile automation, presented on the market today, pleases with diversity. Useful and necessary mini-aggregates are produced by world-famous brands and small companies that are just trying to win their place in the sun.

Energy-dependent automation is presented in the form of a control panel, where the user can set the parameters of the equipment that are convenient for him. The cost of a “smart” element is high, but the costs are justified, because with the help of a control unit, you can reduce resource consumption without any damage to your own comfort

Among the models offered, there are both very simple products and more advanced units with a programming option.

On them, the user can choose the most suitable for himself and program the system to work in day / night mode or, focusing on the weather forecast, set a certain level of heating of the house or apartment for a period of 1 to 7 days.

View # 2 - non-volatile units

Non-volatile automation more simple and practical. Management and adjustment are carried out manually using mechanical rotary toggle switches and are not difficult even for those who are far from technology. The device works completely autonomously and does not need to be connected to the central electrical system.

For residential heating and supply hot water in taps, it is enough to turn the control knob in the direction of increasing by 2-3 divisions. If you want to take a bath or shower, the toggle switch must be set to the maximum value.

The product is marked with a digital scale with a list of values from minimum to maximum. To activate, the user selects the desired mark and in this way sets the appropriate operating temperature directly to the boiler.

After these manipulations, it connects and takes control of the specified heating mode. The boiler is actively working until the room warms up to the desired temperature. Then the temperature controller turns off the gas supply to the system and is activated again only when the room becomes colder.

The principle of operation is based on the specific design of the device. Thermocouple built into the heat exchanger gas boiler equipped with a special rod. It is made of a special iron-nickel alloy called invar.

The physical characteristics of this progressive material endow it with the ability to capture minimal temperature fluctuations almost instantly.

If the room gets too hot or too cold, the size of the rod changes. The connecting valve reacts to this and timely shuts off or activates the gas flow to the burner.

The presence of a non-volatile automatic control system allows users to set the most suitable temperature regime for themselves in a house or apartment and save fuel resources without overpaying utility bills

Additionally, non-volatile type automation has sensitive ones. If the pressure in the pipe suddenly decreases or the draft level in the chimney drops for some reason, the supply of the resource immediately stops and gas leakage can be avoided.

Non-volatile automation costs quite reasonable money and, unlike electronic analogues, does not require the purchase and installation of a stabilizer that controls voltage and equalizes unforeseen surges in the central power grid

The correct operation of the flame sensor is ensured by a special plate. During normal and correct functioning of the system, it is in a slightly bent state.

In this way, the part keeps the shut-off valve in the " Open". When the flame becomes smaller, the plate is leveled and the valve closes under its pressure.

Design and principle of operation

Automation that controls the work consists of many elements, conditionally divided into two subgroups. The first includes mechanisms that ensure the full and safe functioning of the boiler itself. The second includes devices that make it possible to operate the heating system in the most convenient and comfortable mode for the user.

Components of the security system

Several modules are responsible for the operational safety of the unit:

flame controller- consists of two main parts - a solenoid valve and a thermocouple. Shuts off the gas in a timely and reliable manner and prevents leakage.
Thermostat– maintains the set temperature of the coolant and protects the system from overheating. When the coolant cools down to the minimum temperatures, the module starts the boiler into operation, and after fixing the peak-high rates, turns it off, completely relieving the owners of the need to constantly pay attention to the system.
Traction control sensor, is responsible for stopping the gas supply to the burner in the event of a change in the basic position of the bimetallic plate, thus preventing gas leakage.
Safety valve- monitors the amount of coolant in the circuit.

In addition to all of the above useful qualities, automation has a number of additional functions that increase the comfort of using the equipment.

The device is auto-igniting gas burner, selects the most efficient operating mode, contributes to the rational use of energy resources and conducts independent diagnostics, saving the owners from all these activities.

The principle of operation of safety automation

Actual normative documents says that the gas boiler security complex must be equipped with a device that stops the operation of the entire system and shuts off the gas supply in the event of an unexpected breakdown or any other force majeure circumstances.

To accomplish this task, automation must control such parameters as:

gas pressure in the system;
the presence of a flame of optimal size in the burner;
full, high-quality traction;
temperature level of the working coolant.

When in non-volatile mechanical system the gas pressure drops to a critical level, the supply of the resource is immediately stopped. This happens automatically due to the presence of a valve mechanism set to a certain value.

Volatile electronic devices are designed somewhat differently. In them, the above function is performed by a minimum / maximum pressure switch.

With an increase in the number of atmospheres, the membrane with the rod bends, opening the power contacts of the boiler itself. Gas stops flowing and is not supplied until the pressure level is restored.

Troubleshooting and somehow interfering with the basic functionality of the equipment is prohibited by law. Any problems that have arisen can only be corrected by a qualified specialist - an employee of the gas supply company

If the flame disappears in the burner, the thermocouple cools down and stops generating current. After that, the electromagnetic damper in the valve no longer functions, and the gas stops flowing to the burner. When the thrust drops, the bimetallic plate heats up intensively, changes shape and acts on the valve, forcing it to stop supplying fuel.

The temperature of the coolant is kept under control by a thermostat. It ensures that the user-selected warm-up mode is maintained, while preventing the system from overheating and failing.

The nuances of the functioning of the system

Volatile electronic automation in work relies on information received from sensors. The microprocessor and the internal controller analyze this data, process and give the system commands that are best suited for a particular situation.

In order for electronic automation to function normally for a long time, it is necessary to call the wizard annually to inspect the equipment, diagnose the microprocessor and view memory module reports.

Mechanics has a slightly different principle. When the boiler is off, the internal gas valve is completely closed. At the moment the equipment is started, the washer on the valve is squeezed out and the passage for the fuel resource to the igniter is forced to open. The ignition stimulates the heating of the thermocouple and voltage is generated on it.

This resource uses an electromagnet that maintains the valve in the open position. By turning the washer manually, the user can effortlessly adjust the level and power of their heating equipment.

Overview of popular models and manufacturers

In the progressive market gas equipment and related elements, automatics of both domestic and foreign manufacturers are presented. By the principle of operation, all devices are exactly the same, however, in terms of design, there are significant differences between them.

The presence of control automation in the system gas heating makes it possible to comfortably heat the room and rationally consume energy resources. With a reasonable approach, savings can range from 30 to 43%

The cost of modules varies in the widest range. Simple mechanical products with a minimum of functions belong to the budget class and are sold at the lowest price. Advanced electronic panels are much more valuable, but provide the user with more advanced options for individual settings and work control.

Some devices, such as SABC automation, in addition to basic functions, are equipped with a built-in pressure stabilizer. This allows for more precise adjustment of the operation of gas equipment.

Electronic devices with the ability to program are considered luxury. They allow the owner to set the equipment work plan for a long period of time, taking into account seasonal weather conditions and the current outdoor temperature.

No. 1 - EUROSIT 630 automation

Automatic non-volatile unit EUROSIT 630 manufactured by an Italian company Sit Group (Eurosit) market leader in sales.

It is considered universal and works effectively with parapets and power from 7 to 24 kW. Turning on / off, ignition of the pilot burner and setting the desired temperature are carried out using one handle with a button.

The Eurosit 630 module is a modern unit for controlling gas equipment. Totally coincides international standards and safety requirements for such devices. Has a European quality certificate and a guarantee from the manufacturer

The product has a high level of reliability, withstands significant operating loads and has extensive functionality. Structural elements are "hidden" in the housing, to which the sensor cables and other connecting tubes are connected.

The ignition time of the heating boiler with the help of Eurosit 630 automation is 10 seconds. The gas is immediately supplied to the system and very soon the room warms up to the set temperature.

Inside the unit there is a cut-off valve, a spring valve and a pressure regulator. The gas supply is carried out from below or from the side according to the wishes of the user. The cost of the unit is included in the category of budget.

#2 - Honeywell 5474 module

The Honeywell 5474 device is manufactured by the German concern Honeywell, for more than a hundred years specializing in the development and sale of various kinds automation. Correctly works with household power up to 32 kW.

Honeywell 5474 is a non-volatile heating control device. Equipped with microflare burners made of heat-resistant stainless steel. They provide better combustion of gas, reduce the emission of harmful substances into the atmosphere and do not allow excess soot to be deposited in the chimney.

The Honeywell 5474 automatic system is equipped with a basic set of control functions that guarantee the efficient operation of the boiler with absolute safety for users.

The product in auto mode maintains the specified coolant temperature (from 40 to 90 degrees), turns off the boiler in the event of a fuel supply failure, lack of draft of the required level in the chimney, reverse draft or burner extinction.

No. 3 - premium automation from Honeywell

In addition to inexpensive budget models, the company Honeywell produces other types automatic equipment, for example, luxury premium chronothermostats CT series or programmed thermostats Honeywell YRLV430A1005/U.

The YRLV430A1005/U device, with the widest possible functionality, has a friendly interface and does not cause any difficulties for customers in the process of use. The cost of the product is quite high, but still lower than that of competitors offering models similar in characteristics

These electronic panels allow you to set the most detailed and precise settings for the heating equipment, up to changing temperature regime several times a day, depending on the time of day, weather conditions and personal wishes.

No. 4 - Orion device

Automatic device Orion manufactured in Russia. The device is equipped with a piezoelectric ignition and a draft sensor.

The Orion device looks simple and has a minimal set of functions. Its capabilities are not too great, but, thanks to its loyal cost and elementary control method, the unit is in demand

The device turns off the gas in the event of arbitrary attenuation of the burner or lack of the required draft. When the air temperature in the room drops, the thermostat activates the fuel supply and the operation of the boiler resumes.

The transition to the flame reduction mode when a certain (user-set) temperature is reached occurs automatically and saves fuel resource.

Conclusions and useful video on the topic

A detailed description of the principle of operation of automation designed for a gas boiler. Interesting Features and nuances of control equipment:

How automatic gas heating boiler works. A visual demonstration of the ignition process of a gas unit:

A detailed description of one of the most popular models automation designed to control and adjust the gas boiler:

Gas heating system, controlled by automation, is a practical and cost-effective option for home heating equipment.

The mechanical controller is distinguished by its low price, reliability and elementary control method. The electronic panel is more expensive, but has advanced functionality that allows you to create the most comfortable conditions in the room.

It is better to purchase mini-units in company stores where certified goods are sold that meet all the requirements for elements of gas-fired heating systems.

Do you know the intricacies of the operation of gas equipment automation that are not noted in the article? Any questions while reading the material? Please write comments, share your own opinion and photographs on the topic of the article.

Honeywell automation is an affordable multifunctional non-volatile device that allows you to regulate the gas supply, taking into account the water temperature and electrical energy in the system.

gas valve Honeywell is able to create a mode effective use fuel and a high rate of fire safety.

Choosing and purchasing Honeywell spare parts is no longer a problem, just look here. You can also consult with experts.

Important information! Installation of Honeywell automation can be carried out on boilers with a capacity of up to thirty-two kW.

Consider the main advantages

Efficient functioning of the system on different types gas supply.
The system does not require connection to electrical network.
There is a starting gas filter and a special screw in order to regulate the fuel supply.
Ability to operate the device at low gas pressure.
Function to turn off the system in case of insufficient draft or in case of backsmoke.
Stable temperature regime.
Possibility of smooth adjustment.
Piezo ignition is modeled so that the device is as simple and convenient as possible during operation.
Constant outlet pressure.
Simple design and compact dimensions of the device.

Let's look at some features

It is worth noting several important functions and features:

The igniter is ignited by a piezoelectric element.
The ability to regulate the water temperature from forty to ninety degrees Celsius.

You can also configure the automation unit to achieve the following parameters:

Minimum and maximum gas supply to the system.
Setting the gas flow to the igniter.

Please note! Stainless steel burner design complete combustion gas.

Emissions will also be reduced. carbon monoxide to the environment, resulting in much less maintenance of the chimney.

Conclusion on the topic

These functions and features characterize the reliability of the entire system. With them, the period of uninterrupted and reliable operation will increase.

Be sure to consult with specialists, they will tell you about many of the nuances that will be applicable specifically in your boiler room. Good luck building and renovating!

Automation for gas boilers: types, principle of operation

5 (100%) votes: 1

Modern automation ensures reliability and high working efficiency of gas boilers. Automation allows you not to worry about the safety of the boiler, and makes its use comfortable and economical. The owner does not need to constantly pay attention to heating equipment, as the system is automated. Thanks to the ability to fine-tune the devices, the owner can easily set and change the operating parameters.

An automatic gas boiler can even turn itself off in the event of an emergency. Automation devices clearly set the parameters of combustion and fuel consumption. This gives the owner the opportunity to save money on space heating.

You can find out the price and buy heating equipment and related products from us. Write, call and come to one of the stores in your city. Delivery across all territory of the Russian Federation and the CIS countries.

Automation SIT 630 EUROSIT

Automation for heating units can be divided into:

volatile (functioning from the power supply network);
non-volatile (mechanical devices).

Types of volatile systems

An autonomous gas boiler involves the installation of complex electronic devices that are dependent on the power supply network. These devices independently adjust the fuel supply, flame power.

Room thermostats

Volatile automation systems are represented by the following types of devices:

programmer for a day;
weekly programmer.

Room thermostat mounted in a room where you want to regulate the temperature. Sensors take measurements.

When the temperature drops, the thermostat reacts and sends a signal to the gas boiler. The boiler starts up.

When the optimum temperature in the room is reached, the valve closes and the gas boiler stops working.

connects room thermostat to the unit with a cable.

Daily programmer. The functions of this device are the same as those of the thermostat, but it is possible to set programs for the day. The programmer also works with the hot water supply system. The cycle restarts after 24 hours.

The device is connected to the gas unit using a cable and via a radio channel.

weekly programmer. Such a weekly device has more opportunities for changing the indoor climate. There are built-in modes and those that can be configured manually. The action takes place in a radius of 30 meters or more. Data can be monitored on the illuminated display.

Devices can be selected by color depending on the design of the room.

Devices of a modern type can not only control the temperature, but also carry out independent diagnostics of equipment. They control the operation of the pump and protect the gas boiler from freezing.

Weekly programmer Auraton 2030

The principle of operation of non-volatile automation

Energy-independent devices are autonomous, they do not care about the presence of an electrical network, they have easy manual control. After self installation the owner of the required temperature, heating is maintained automatically, that is, by adjusting the gas supply to.

Automation for a gas unit functions in this way: in a working boiler, using a thermostat, which is connected to a valve and supplies fuel to the burner, the temperature is monitored to match the set parameters. , installed in the heat exchanger, fixes the temperature of the coolant. The main element of the thermocouple is the invar rod. It is sensitive to temperature changes. The rod acts on the valve that adjusts the gas supply, it lengthens when heated and becomes shorter when cooled.

As the temperature rises, the flow of fuel becomes less - and the flame goes out until the rod becomes cold.

The principle of operation of draft and flame sensors is similar to the operation of boiler automation with changes in the temperature of the heat carrier. One sensor is sensitive to a deterioration in smoke draft, the other is sensitive to a strong decrease in gas pressure in the pipe. The principle of operation of automation is the same: expansion or deformation of the material with strong heating. The draft sensor, which is located in the smoke hood, includes a bimetal plate. As thrust deteriorates, combustible smoke gases accumulate and overheat the plate. The plate bends, the contacts are disconnected, the gas does not enter the combustion chamber. The flame sensor works in a similar way.

Despite the convenience of electronics, many still choose mechanical automation for a gas boiler. There are several reasons for this:

The control of such automation is elementary.
A non-volatile system costs much less than devices that consume energy.
Not afraid of a power outage, power surges, which does not force you to purchase.

Manufacturers

Many companies that produce automation for gas units also produce solid blocks in which all the most necessary devices are available:

thermostat;
valve;
pressure meter;
execution relay.

The automation device may vary depending on the issuing company, although the devices operate by analogy. Automation from Italy SIT is reliable and simple. The 630 EUROSIT model is in the greatest demand.

Domestic analogues can be seen under the brands SABC and Orion.

American automatics for the Honeywell gas boiler is one of the most popular.

Honeywell has been known since 1885 and is currently one of the leaders in the production of various automation.

servo

The popular Honeywell VR 400 model has two servo-operated valves for operation with electronic boiler control units or remote controllers. The device has the following characteristics:

soft ignition function;
work on the principle of modulation;
built-in mesh filter;
maintaining the burner mode "small flame";
redundant outlets for connecting minimum and intermediate pressure switches.

Honeywell products are high-precision, high-quality and efficient, regardless of the price category, which is why they are so popular in many countries. Budget automation for a gas boiler of this company costs about $ 50 (models Honeywell vs8620, Honeywell v5475, Honeywell v9500). Such devices include:

a standard set of controllers that contribute to the safe operation of the gas boiler and maintain the specified temperature of the coolant in the system;
technical characteristics with more necessary indicators;
mechanical temperature control knob.

Honeywell systems can perform the following functions:

Maintain the specified coolant temperature (40 °C to 90 °C).
Switch off the unit in the absence of gas.
Turn off the boiler when the draft in the chimney stops or when a reverse draft occurs.
Shut off the gas supply when the burner goes out.

Automation for the Honeywell gas boiler is currently popular and is available in a large assortment, so the buyer always has a choice of controllers. Honeywell gas boiler safety automation has established itself as a high-quality, accurate and efficient technique. And this applies to all models of the company, regardless of price.

Modern automation for gas heating boilers has great importance in safe operation heating device, and at present it is almost impossible to do without it. Foreign models of automation are distinguished by high reliability and long service life, this is proved by the time-tested operation of devices on different gas boilers.

When considering home heating options, most often they stop at using a gas boiler. If there is a main gas pipeline near the house, this heating option is considered the most economical and efficient.

When installing any heating boiler, including gas, a mandatory component of the system is automation. Such automation for heating boilers allows, without human intervention, to maintain the specified climatic conditions in a heated room and provide optimal conditions operation of such a boiler.

What does automation for gas heating boilers consist of

Typically, such automation includes the following elements:

fittings. These are actuators that, under the action of commands, turn on and off the start-up of the boiler, as well as regulate its power;
valves designed to cut off the gas supply;
maximum and minimum pressure switch. Designed to protect the system when pressure drops or increases too much;
thermostat;
water and gas pressure sensors;
controller - an electronic device that, based on the data received, calculates the optimal mode of operation of the gas boiler and generates control commands.

Types of automation for heating boilers

From the point of view of power, automation for gas boilers is of two types:

non-volatile automation;
volatile automation.

These two types of automation differ in that the first system does not require power from the mains, and for the second to work, electricity must be supplied.

Accordingly, these two automation systems will include different elements.

Non-volatile automation is simpler and more reliable, as it does not react to a sudden power outage.

Non-volatile automation

These automation systems include:

ignition system, which is used as a piezoelectric element;
thermostat;
draft and flame sensor.

Mechanical automation starts working after the boiler is started. Depending on the temperature of the heated water, the thermostat changes the amount of fuel supplied to the burner. Structurally, the thermostat is a metal rod. It changes its length as the temperature changes. Thus, it opens or closes the gas supply.

The draft and flame sensor is designed to interrupt the gas supply when the burner flame goes out or the draft in the chimney is poor. Structurally, such a sensor consists of a bimetallic plate, which, under the influence of temperature, changes its position and closes the gas supply.

Of the control and measuring equipment in such systems, a pressure gauge and a thermometer are used. Such a system is configured manually.

Modern non-volatile automation systems for gas boilers can have a much larger number of nodes. For example, Italian non-volatile automation has the following nodes:

system of inclusion and management of temperature;
flame protection system;
device for setting the minimum gas flow;
pressure regulator;
thermostat with burner shut-off function.

Volatile automation

More complex is volatile automation. Such electronic system contains more elements.

For regulation in volatile automation, electromagnetic valves are used. The operation of these valves is carried out according to commands generated in the processor. Using a special display, the operator can select one of the possible modes. And the correct implementation of this mode will ensure automation.

From the point of view of the functions performed, automation for gas heating boilers can be of two main types:

room thermostat;
weather dependent.

Room thermostat

In the first case, the main indicator for controlling the operation of a gas boiler is the temperature in the room. Depending on this temperature, the operating mode of the boiler is selected. When the temperature in the room drops, the boiler starts to work, and when the temperature exceeds the set level, it will turn off.

Thermostat designs may vary. For example, the SEITRO thermostat operates using a membrane sensor. At a certain temperature, the sensor closes and a switch-on command is transmitted to the gas boiler.

Thermostats can be installed in any convenient place in the room, and communication with the gas boiler control unit can be carried out using a cable or wireless connection.

SEITRO thermostat

A kind of thermostat is a programmer. From such a programmer, commands are transmitted to the gas boiler during the day, in accordance with which its mode of operation is carried out. Every day the cycle is repeated.

The weather-dependent automation of the gas boiler works taking into account the temperature environment on the street. Appropriate adjustment of automation allows you to maintain a constant climate in the house when the air temperature outside changes.

Weather-dependent automation

Basic functions of automation

The main functions of automatic gas heating boiler are the following functions:

automatic start of the gas boiler;
stop the operation of the gas boiler;
control and adjustment of the burner power using an appropriate sensor;
emergency stop of the gas boiler in case of any malfunction.

When you turn on the gas boiler, the automation first starts the hardware of the system. With this, the temperature is measured and the amount of gas that must be supplied to the gas burner is estimated. At the next stage, the automation starts the gas fittings, as a result of which gas is supplied to the system. At the same time, a spark is ignited in the combustion chamber, which ignites the gas. Under the action of a flame in the heat exchanger, water is heated, which is then fed into the batteries.

One of the options is sub-automatic for a gas heating boiler

An important part of the automation system of a gas heating boiler is the security subsystem. This includes:

overheating protection;
frost protection;
anti-blocking;
anticyclic function;
flame and draft control.

To protect against overheating, duplication of sensors is often used - a temperature sensor and a limit thermostat. To protect against freezing when the water cools down to a temperature of + 5 degrees, the automation ignites the burner and heats the water.

Anti-blocking provides automatic activation of the pump every 24 hours in order to combat scale. The anti-cycling function assumes that the automation prevents frequent ignition of the burner, which reduces its operating life. When a signal of the absence of a flame or draft appears, the automation system turns off the gas supply.

In volatile automation systems, the gas supply is turned off using a solenoid valve through which the gas enters the burner. The valve automatically turns off even if the gas stops flowing. The disadvantage of such a valve is that when gas appears, it cannot open automatically and you have to do it manually. At the same time, in case of power failures, after the restoration of the electrical circuit, the system starts automatically.

Modern automation systems for gas heating boilers allow reliable and safe operation of gas boilers

In modern automation systems for a gas boiler, the diagnosis of a system malfunction is performed automatically. The results of this diagnostic are displayed. This greatly facilitates and speeds up the repair of a gas boiler.

Outcome

Choosing which automation to buy for a gas boiler it is necessary to understand that the most modern systems are energy dependent. If the customer has doubts about the reliability of the electrical network in his house, then it is necessary to consider the use of non-volatile automation systems.

Video review and honeywell automation for gas boiler:

The presented video shows an overview of the 630 Eurosit automation for gas heating boilers

The most incomprehensible malfunction in the history of our work will be described below. And, to the end, we are not 100% sure. We sorted out the details of what was happening almost completely and more than once resolved this issue with a positive result. But, nevertheless, some kind of uncertainty is still present. Maybe this will pass with time, after the complete disassembly of the valve, when there is an opportunity. OK then...

Main symptoms. It starts as if from afar. Nothing portends trouble. For no apparent reason, a working boiler suddenly turns off unexpectedly. The boiler can work properly for several months before this starts. Or maybe even a few years. Well, turned off, and turned off. We approach the boiler. We launch. Works. After this strange failure, a day or even a week usually passes.. And the situation repeats itself. The boiler may turn off, for example, at night. After that, the boiler shutdowns become more frequent, and as a result, the boiler cannot be started at all. We release the button, the igniter goes out.

What usually immediately confuses specialists .(but the same fault!!!)

1. Everything is fine. Idling works. (The igniter burns). You set the desired temperature. The boiler picks up this temperature and suddenly cuts out along with the igniter. Then, the boiler cannot be started at all until it cools down. After a couple of hours, the boiler can be turned on, but the situation immediately repeats itself. Or else...

2. Launch boiler. Works. Picks up temperature. Cotton. Emission of gas from the igniter. Everything goes out. And then, until the boiler cools down completely, you can not even approach. The gasman, for example, cleaned the pilot burner. Dayworked and again the same story.

Next, look at the top picture. How do they usually act? They pull off the wires from No. 3, wind a wire jumper and try to start the boiler. After the boiler does not start, and it usually does not start in 90% of cases, almost without exception everyone begins to sin on the gas valve, claiming that it is faulty, or the solenoid valve located inside the gas valve. Replacing the gas valve with a new one does not fix the problem. Or, as mentioned above, a day passes, or, at best, a week. And then a complete repetition of the situation. This, of course, got tired very quickly, but let's not blame anyone from those who could help us, right? Therefore, let's get down to business.

Entering information 17.04.2013 For a quick diagnosis of such a malfunction, see the article. Here is a specific list of actions that will help "revive" the boiler or repair it.

1. First we will get used to the big picture. Let's go to the boiler, and with our eyes we will find by the elements everything that we need here. Nothing without this.

2. Then we will analyze the work of each element in this chain separately. This will greatly help to see the overall picture of the boiler.

3. Let's make a diagnosis and figure out the situation together. I advise you not to rush and carefully study everything, because here the matter is so delicate that if there is no elementary attentiveness, you will not be able to do anything. Run to change the boiler for a new one, as some people usually advise, having bothered with the boiler until late at night, or just quietly give the oak to minus -30C, buying all the thermocouples, valves, and giving away about ten for nothing.

We are working.

1.This is a Honeywell gas valve.. There may be another valve. By the way, I must say that this malfunction directly concerns AOGV boilers with a capacity of 11.6, 17.4 and 23.2. These boilers are equipped with simple valves. There are more complex valves, for example, or Honeywell, using two thermocouples: one -, the other, multiple -. These blocks are on AOGV 29.1 and more powerful boilers. We are not talking about them now.

2. It's a thermocouple. The igniter heats it, it generates EMF. This EMF holds open valve. The thermocouple will cool down - the valve will close. Thermocouples for Honeywell units - . If you need to know more about the work -.

3. This is a thermocouple breaker. It is also called "thermal interrupter". The great unfortunate thing is that breakers are only supplied for Eurosit units. They have an M9 thread. And the Honeywell block has a thread for the M10 breaker.

4. Thermostat 90C. Or 95C. 90C is the temperature at which the relay is triggered. Boiler protection.

5. Button KM1-1. Or a small button KM1-1. Doesn't matter. Essentially an ordinary electric push button switch.

6. Thermoplate. Here it is a little different. Not the same as installed on your boiler. Your thermoplate has a nut welded in and an adjusting screw. With poor draft in the chimney, the plate bends and presses the KM1-1 button. The boiler is switched off.

When we looked, found all the elements and even felt them with our hands, let's move on to analyzing the work of each element separately.

1. Honeywell gas valve.

Currently not installed by the factory. More precisely, how it was put and put, only under a different name - Mertik Maxitroll. It's not analog, it's what it is. Remove the cover from yours and you will see this name. To start the boiler, we turn the knob to the "Spark" position, push it down. The gas went to the igniter. After that, we turn the handle, click the piezoelectric element (in this block it is built into the valve and controlled by the handle), the igniter lights up and wait 30-45 seconds until the thermocouple warms up. After that, release the handle. The solenoid valve remains in the open position, powered by the EMF from the thermocouple. We turn the second knob of the temperature regulator, opening the gas to the main burner. The burner lights up from a working igniter.

2. Thermocouple. The thermocouple is placed at one end in the igniter flame and when warmed up for 30-45 seconds, it begins to generate an EMF of 20 mV. These 20 mV and keep the solenoid valve of the block in the open position.