Cleaning the gas boiler

Any equipment in a private home, established to provide a comfortable living environment, needs regular maintenance. These are measures to prevent pollution and direct cleaning of certain parts. Cleaning the gas boiler - this is the process in which without certain skills and knowledge it is better not to wither. Therefore, we propose to read about what methods exist for cleaning boilers, and also how to understand when it is necessary to clean them.

to the contents ↑

How do I clean the heat exchanger?

The process of cleaning the heat exchanger depends not only on its design, but also on the type of water used in the system: unprepared or prepared with special additives.

By design, the heat exchanger may well be one of several types:

• fire-tube;
• is bithermic;
• plate.

The lamellar are divided into several types - secondary and primary for heating water.

Important! A fire-tube heat exchanger is installed in floor boilers, bithermic - in compact floor or wall models.

Cleaning is carried out by the following methods:

• mechanical;
• chemical;
• electric discharge;
• is hydrodynamic.

Important! Servicing of gas equipment, including boilers, must be performed by specialists with appropriate knowledge. If you do not have enough technical knowledge and skills, better call for help from the master.

to the contents ↑

How to clean the flame tube heat exchanger for a single-circuit boiler?

Cleaning of floor boilers with a flame tube heat exchanger is fundamentally different from a similar procedure for attachments. In this case, to carry out this procedure, the heat exchanger need not be removed, but it is only necessary to provide access to it.

To perform this work, you will need the following tools:

• brush-ruff metal;
• spanner wrench;
• hand-held metal brush;
• screwdriver;
• brush made of nylon or natural nap.

Important! The first thing you should do is close the gas supply tap. Then perform 3 stages of work - provide access to the heat exchanger, clean the parts, collect the boiler back. The stages of assembly and disassembly depend on a particular model.

to the contents ↑

Cleaning the dual-circuit boiler

For a boiler with a circuit for water heating, it is mandatory to clean the secondary heat exchanger from the internal scale. Moreover, it should be cleaned a little more often, because as it passes through a whole stream of unprepared water. Thus, mineral salts of hardness are actively deposited on its walls.

Important! The same applies to bithermal heat exchangers.

How do I clean the boiler from soot at home? This work is carried out in several stages:

1. The first is the mechanical cleaning of the outer surface of all parts and chimneys from accumulated soot.
2. The second stage - chemical, electric discharge or hydrodynamic flushing from scale.

to the contents ↑

Mechanical cleaning of plate heat exchangers

You can clean the boiler from the soot without removing the heat exchanger. To do this, you need:

1. Remove the cover.
2. Next, take a hard nylon brush and close the gas nozzles, so that no dirt gets in there.
3. If the soot has adhered to the surface and will not be removed during the machining process, remove the heat exchanger and soak it in a special detergent for several hours.

Important! Similar products are presented in stores in a fairly wide range, you can purchase Fauch and MAZBIT +.But you can also use the household chemistry, which is intended for cleaning ovens and grills.

Before disassembling the boiler:

1. Disconnect it from the gas, but disconnect the ignition source from electricity.
2. Drain the water from both circuits, as well as the expansion tank.
3. First remove the secondary heat exchanger, which is located immediately behind the boiler cover.
4. Primary, it's the main, to remove a little more problematic, because you have to disassemble the combustion chamber itself.

to the contents ↑

How to clean the surfaces from the inside?

Flushing of the internal surface of the flame tube, plate or bi-thermal heat exchanger is possible only with the help of special equipment:

• High pressure pump, which performs hydrodynamic flushing. This device is used to remove small deposits.

Important! The advantages of this device consist in the speed of the procedure and the possibility of cleaning the gas boiler without removing the heat exchanger.

• Booster, it's also an acid pump. Removes even the oldest scum. Advantage - eliminates scale, which can not be eliminated in other ways.

Important! If you incorrectly selected the reagents( neutralizers and acids), the life of the heat exchanger decreases.

• Streamer complex for electric discharge cleaning. It is used to remove scales of any degree of strength. Advantages - does not affect the metal of the heat exchanger, provides a high level of cleaning.

Important! Disadvantage: duration and noise of the procedure.

Of all the above methods at home, only chemical cleaning is possible, because the factory booster can be changed to a low-pressure pump. All other equipment is expensive and voluminous, therefore such cleaning of the boilers can be done exclusively by service centers.

to the contents ↑

Chemical cleaning

If you have a booster, wash it yourself:

1. Booster can be made by own hands - this is a capacity of 10 liters with two hoses and the pump itself.
2. In order for the procedure to help eliminate scale, but does not affect the metal surface, select the acid correctly.
3. Once you have been treated with acid, flush the heat exchanger with a neutralizer.

Important! If the boiler was cleaned regularly, small deposits formed on the pipes, then it is better to use citric acid. The concentration of the prepared solution is: 5 liters of water per 200 g of acid.

If the scale is old or unprepared water is used with a high percentage of minerals, that is, hard water, take more radical means - solutions based on orthophosphoric, hydrochloric or sulfuric acid.

It is not recommended to use a solution of hydrochloric acid without corrosion inhibitors, because this will damage the equipment.

to the contents ↑

How often should I clean the boiler?

All technical documents for boilers indicate how often it is necessary to clean it:

• For closed circuits with the addition of reagents, they are also single-circuit heating boilers, cleaning must be done infrequently. It can be done 1 time in 2-3 years.
• The secondary and bithermal exchanger must be cleaned every year, and if the operating conditions are poor - twice a year.

What are the signs to understand that the boiler needs to be cleaned?

Signs that an urgent need to clean the gas boiler:

• boiler is slowly gaining temperature;
• thrust of insufficient level;The
• burner does not burn properly or does not light;
• with the same consumption of gas heat return is much less;
• traces of soot or not completely burned paint near the inspection window.

Do not neglect preventive measures, because as a result of this, not only broken units may turn out to be. The safety of all the inhabitants of the house is under threat. Choked smoke chimneys and channels with outgrowths inside may be the cause of serious accidents.