Wall gas heating boilers: 6 stages of self-installation

One of the main characteristics affecting the comfort of people living in an apartment or a private house is the air temperature in the rooms. In most modern buildings, heating is performed using individual heating systems, the central element of which is wall-mounted gas heating boilers.

The following material is dedicated to the features of this equipment, types and order of installation by hand.

Equipment types

Gas wall heating boilers are widespread in the field of individual construction. This is due to their compactness and ease of installation. In addition, the equipment firms Buderus, Ariston and some others are quite affordable price, which also had a considerable influence on their popularity.

In a compact and lightweight case all the necessary elements are placed, for the placement of which previously it was necessary to equip a full-fledged boiler room:

• heat exchanger;
• gas burner, with which water is heated;
• water pump to facilitate the circulation of fluid through the system;
• an expansion tank that prevents the network from breaking as a result of an increase in fluid volume;
• measuring equipment with which you can find out the parameters of the equipment;
• control system that allows finely adjust the operation modes of the boiler.

Note! Another important advantage that distinguishes the gas wall-mounted heating boiler, is ease of use. Even a child can start the heating system in operation and maintain the necessary parameters. And the presence of special controllers (for example, in the equipment BAXI) allows you to integrate it into a comprehensive system of climate control in the house, controlled by a computer.

Before considering the technical characteristics of a particular model, one should dwell on the existing classification of this equipment.

So, by functionality, the heaters are divided:

• single-circuit gas wall heating boilers - provide heating for the premises of an apartment or cottage;
• double-circuit - in addition to heating the coolant entering the heating radiators, provide hot heat to the home.

Naturally, the second option is more preferable, since it allows to solve two problems at once. Remember that buying a wall-mounted gas boiler for heating with two circuits only for heating water is not rational, in this case there are more profitable solutions.

In addition to the classification criteria mentioned above, boilers are divided into the following categories:

1. With an open combustion chamber. In this case, the air necessary to maintain combustion comes directly from the room where the equipment is installed, and the smoke and harmful substances are discharged through a specially equipped chimney.
2. With closed combustion chamber. Such gas heating wall-mounted boilers are most often installed in city apartments, where the presence of the chimney is not provided by the project. In this case, the products of combustion are removed to the outside through a special channel with the help of a fan, and not natural thrust.

Bend to remove smoke is made of a special polymer pipe, which is passed through the wall of the house at the place of installation of the boiler. It has two channels, as it is simultaneously used to supply clean air to the burner.

A wall-mounted gas heating boiler with a closed combustion chamber has the following advantages:

• does not burn oxygen in the living room;
• does not require the arrangement of the chimney with a natural draft.

By type of ignition, gas climatic equipment is also divided into two types:

1. With piezo firing. Their design provides for a special button, pressing which leads to the ignition of the gas burner (outdated design).
2. With electronic ignition. Such wall gas heating boilers are controlled automatically. They are more economical to use fuel, because they do not have a constantly burning igniter. In addition, after a power outage and the resumption of electricity supply (which often happens in the domestic realities), they resume work independently, while the previous model requires human participation.

Note! There are completely non-volatile models of equipment (for example, a wall-mounted gas heating boiler manufactured by Beretta). Even with a power outage, they retain their performance.

Product Benefits

The models of climate equipment considered in this article have many advantages that distinguish them favorably from other units used for space heating:

1. Almost all models allow you to adjust the power of the burner in a wide range of values. Due to this, the preset temperature will always be maintained in the room, and the service life of the boiler is increased due to its less intensive use.

1. Products retain their performance even with a significant decrease in pressure in the gas network. This is very important for our country, where such troubles often occur. Even with a decrease in pressure to 5 mbar, the boiler retains its efficiency (of course, its efficiency is significantly reduced).
2. All modern models are equipped with a variety of devices that protect against errors in operation. You can be sure that any manipulations with the acquired boiler will not lead to an emergency.

In addition, gas wall boilers have double protection against the formation of scale:

• the system of temperature control in the primary circuit, eliminating overheating of the coolant;
• a magnetic circuit that counteracts the formation of scale in the secondary circuit (it separates the salts contained in the water and prevents them from settling on the walls of the equipment).

Additional features

Some models of boilers have additional features that further increase the comfort of their use:

1. Winter and summer mode switch. Special electronics do not allow the boiler to turn on the heating circuit in the summer with a slight decrease in air temperature at night. Only hot water will work.
2. Automatic filling of the heating circuit. Sometimes pressure in pipes and radiators decreases. Some models of gas boilers have special valves and pumps that allow you to automatically add water.
3. Interaction with solar heat collectors. For this purpose, boilers are used, the heat exchanger of which is equipped with two coils, which make it possible to use thermal energy from both gas combustion and the collector. These devices are not very common, but quite economical.

Documents to install

The gas equipment installation instructions require that the following documents be received before installation of any such equipment in a dwelling:

• the original agreement on the service of climate equipment;
• the original agreement with the organization performing the commissioning procedures;
• deed of distinction drawn up between the organization supplying the gas and the company that installs the equipment.

Independent installation

Once again, it should be noted that the installation of the boiler must be carried out by specialists with relevant experience and permits. The information below can only be used as a reference.

Stage 1. Fixing

As the name implies, the gas wall boiler is mounted on the wall. To do this, use special brackets included in the package. Remember that the boiler must be strictly vertically, otherwise the systems of descaling built into it will not function correctly, which will cause a breakdown.

Attach brackets preferably anchor bolts that can withstand considerable weight.

Stage 2. Docking with plumbing

The gas boiler heats the coolant, which, passing through pipelines and radiators, increases the temperature of the air in the room. As a heat carrier, as a rule, ordinary tap water acts. Therefore, for the operation of the climatic equipment it is necessary to connect it to the central water supply.

In addition, if you install a double-circuit boiler, you need to dock it with the hot water supply system.

The process itself does not cause difficulties, it is only necessary to take into account one important point: the water entering the boiler must pass through a filter that traps the solid particles present in it. This will avoid the breakdown of expensive equipment and the formation of deposits in the heat exchanger.

Tip! In order to facilitate maintenance of the boiler in the future, it is recommended to equip the incoming connections before the pipe connections with stop valves blocking the water.

Stage 3. Docking with gas pipeline and electrical network

This stage is performed only by a gas service specialist, so there is no need to delve into all the features.

It is only advisable to ensure that the gas connection to the boiler is equipped with such equipment:

• gas tap;
• gas alarm in the air;
• thermal shut-off valves.

Remember that access to a gas shut-off valve should not be cluttered with furniture or any objects.

To connect the boiler to the electrical network, a three-core wire and a socket with grounding is used. Do not use extension cords as this may cause a short circuit and breakdown of the heating equipment.

Stage 4. Arrangement of the vent

As it is known, fresh air is needed to maintain burning. It is also important to remove the combustion products from the room where the boiler is mounted.

A dual-channel coaxial pipe serves for both tasks. It is inserted into a hole pre-drilled in the wall and connected to the boiler according to the attached instructions.

Stage 5. Filling the system with coolant

Before switching on the boiler, fill the heating system with coolant - water.

This process is performed in the following sequence:

• gas equipment is disconnected from the mains;
• gas access to the boiler is blocked;
• a water tap opens (it should not be completely unscrewed, since the filling should be done gradually, giving the opportunity to go outside to the air present in the system);
• As soon as the pressure in the system reaches a value from 0.8 to 1.2 Bar (a pressure gauge where you can read the readings, mounted in the control panel of the boiler), the water supply must be stopped.

Stage 6. Commissioning

Before turning on the boiler, you should once again make sure that the joints with the gas pipeline and the water supply system are tight. Only then can the start be started.

To do this, you must connect the equipment to electricity and set the temperature control to the maximum mark. Everything else will happen automatically.

With other features and nuances of gas equipment operation, you will be acquainted with the specialists who installed the wall-mounted gas heating boilers.

Conclusion

Wall-mounted boilers that heat the coolant with gas are one of the most economical ways to heat a room. To ensure their safe operation, installation and connection should be carried out only by specialists with sufficient knowledge and experience, as well as special permits.

In more detail about the existing versions of the climatic equipment it is possible to learn from video in this article.