Adjusting the boiler gas valve

If earlier the boiler adjustment was simple - turn the valve on the burner and increase or decrease the gas pressure, then modern automation does everything itself. But there are also problems with it that require adjustment of the automation. Let's look at how a modern gas boiler functions.

Description and functions of a gas boiler

A simple heater consists of a heat exchanger chamber, a gas burner and ventilation. The operation of all these systems is controlled by automation.

The safety device for gas boilers has a multi-stage protection system:

1. When igniting, you need not only to turn the gas supply handle, but also to hold it for some time until the solenoid valve (6) is activated. This prevents the device from accidentally leaking gas.
2. The backdraft sensor (8) reacts to the flow of fire from the burner into the room. This can happen due to sudden gusts of wind, a clogged chimney, or malfunctioning burners. Thanks to this controller, the gas supply is automatically turned off when backdraft occurs and people cannot be poisoned by carbon monoxide.
3. The temperature sensor (7) protects the boiler from overheating, turning on the gas as needed. Thanks to it, the temperature in the heating system is maintained at the level specified by the user.

Control systems in gas boilers can be autonomous or energy-dependent. The latter require connection to the electrical network.

Gas boiler adjustment

If the automation begins to work incorrectly, or there are malfunctions in its functioning, then you need to find the reason and either adjust the control system or replace the faulty elements.

IMPORTANT! Do not ignore malfunctions, even if they occur only occasionally. This could cost you and your loved ones your life.

Let's look at the most popular problems that you can fix yourself:

• “The boiler heated wonderfully in the fall, but in the winter the house was cold.” This is, in fact, not a breakdown, but just a need to regulate the heating temperature. There is a thermostat in the body of any gas boiler. It may look like a rotating handle with a scale, buttons with a temperature screen, or a scale with a slider on it. It is enough to set a higher heating value, and your home will immediately become warmer.
• “When igniting, the solenoid valve does not work, no matter how much you press on the handle.” The most common failure requiring valve replacement.
• “The boiler burns normally, but after a while there is a bang and everything shuts down.” As a rule, here we are dealing with automatic activation. But what is the reason for the “pop” will have to be clarified. It is best to invite specialists.

IMPORTANT! Do not glue or jam a faulty EM valve! It is responsible for the gas supply, and if it is fixed, the rest of the automation will be useless. When the burner goes out or during reverse draft, you risk simply suffocating.

Conclusion

In conclusion, it should be recalled that all gas equipment is a source of increased danger. You should not unwind anything in the boiler control system yourself or interfere with the operation of controllers, burners and sensors.Gas is invisible and undetectable, and its leak is much more difficult to detect than faulty wiring or leaking water pipes. If it is necessary to install, replace, repair or adjust a gas boiler, it is better to invite specialists.