It requires special conditions! Features of heating with a gas boiler: installation, requirements for the boiler room

Room for installation of gas boiler must meet special requirements.

Such a room, according to SNiP standards, belongs to the explosive category, which means it is necessary to provide conditions so that in the event of an accident, the fire does not destroy the entire house.

Requirements for the boiler room in a house or apartment

There are no special differences for a cottage or an apartment in terms of installing an autonomous heating system.

There are SNiP criteria, applicable to all categories of premises and if they comply with established standards, a gas boiler can be placed there.

Kitchens deserve special consideration. The architect, when creating the house plan, has already taken into account the necessary safety requirements. But that's not all. A big role is played by total thermal power, emanating from all kitchen units (cooking stove, heating element, heating batteries, boiler). The maximum permissible value for this indicator is 150 kW.

In a country house it is permissible to install any boiler, and there are usually no problems with the premises. But in the kitchen of a city apartment It is allowed to install only one type of boiler - a wall-mounted one equipped with a closed combustion chamber. Additionally, a barred opening is made in the entrance door, area of ​​not less than 0.02 m² - to increase air draft.

There is another difficulty. The boiler room's entrance door leads to the street., this rule is strictly observed. The supervisory authority will require either installing such a door or eliminating the redevelopment. Often, there is only one way out - to break through the opening in the wall, which is fraught with numerous expenditures of effort, nerves and money.

In small kitchens, the volume of which less than 7.5 m³ not allowed to post two water heaters — residents of old buildings will have to say goodbye to the idea of ​​a separate boiler room.

Photo 1. Wall-mounted gas boiler installed in an apartment. The device must be freely accessible.

In an apartment building, there is a risk of fire spreading to other rooms during a fire. So those wishing to install a firebox in the kitchen should immediately prepare themselves for a refusal from the fire inspection service — redevelopment will not be allowed.

Rules for installing a wall-mounted and floor-standing boiler

• The room with the boiler equipment will require a lot of light. For every cubic meter of space there is 0.03 m² window opening (the frame and window package parts are not taken into account). A freely opening vent is required.
• The height of the ceilings in the boiler room starts from 2 m.

• Availability of a supply and exhaust ventilation system. The air in the boiler room is renewed three times an hourThis condition must be met, otherwise there is a risk of gas contamination of the room.
• Boiler room from the rest of the house fireproof partitions will be installed, With forty-five minute time limit, that is, during this time the ceiling material will contain the flame.

There is no clear boundary between the rules for installing a boiler room in a cottage and in a city home. All requirements are the same. The difficulty may lie in the fact that in a private house it is necessary to allocate an entire room for the water heating system, and in an apartment it is not always possible to combine a room with a boiler room.

Parts and equipment

Requirements for installation of boilers depend on the type of unit. Wall-mounted water heaters have lower power ratings and are smaller in size. The requirements for them are more democratic than for floor-mounted ones.

Requirements for floor-standing units:

• The firebox door must have a window with a transom or a through hole for additional air supply. It is better if there is a ventilation system where air is discharged through an opening under the ceiling.
• The need for a sealed chimney. A powerful gas-fired water heater requires a special chimney built on the “pipe in pipe” principle.

• Access to the heating unit must be free., without any accumulation of foreign objects.
• Water supply and sewerage systems are required.
• Only hidden electrical wiring is allowed, a separate distribution board is equipped.
• The floor boiler is heavy, so there are certain requirements for the floor., on which it is located. Only non-flammable and durable coverings are allowed - stone, paving stones, ceramic tiles or concrete.
• The minimum width of the entrance door is 0.8 m.

Of course, SNiP allows for smaller numbers, but taking into account all the requirements, it is better to select a room for the furnace area of ​​4 m², where the ceilings are no lower than two and a half meters with walls finished with facing materials.

Gas boiler installed in a residential building, must be grounded. The most common and recommended by builders is the point option (with one electrode). It is recommended to install a universal module ZZ-000—015.

The boiler is equipped with a gas meter, which is also installed accredited specialists of Gorgaz.

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Gas outlet

There is no need to construct a bulky brick or asbestos-cement pipe for the chimney. The best option is stainless steel or furanflex, protective sleeve or ceramics.

Photo 2. Wall-mounted gas boiler with a stainless steel gas outlet connected to it.

Location relative to the chimney

The choice of the chimney device depends on what type of chamber the boiler is equipped with - open or closed. The location of the chimney is also determined in advance. Projects for new buildings are initially oriented toward internal chimneys. If gas heating is installed in an old building, an external chimney is made.

Diameter and length of the gas outlet

Gas outlet section - 5.5 cm² per 1 kW of power, declared in the passport. In modern buildings, it can be brought out into one chimney maximum two boilers or water heaters, located at different levels of the building, and the distance between the incoming gas flows not less than half a meter. If both heating units are standing on one floor, in the chimney make a cut at a height of half a meter - this distance is strictly observed. The final cross-section indicator depends on the total work of the two heaters.

Smoke exhaust at the outlet - strictly vertical. Maximum allowable pipe slope does not exceed thirty degrees, and the deviation to the side is - maximum per meterThe cross-section of the inclined channel is equal to or less than the cross-section of the vertical pipe.

The cross-sectional area of ​​the flue duct is equal to or greater than the cross-sectional area of ​​the exhaust duct. The horizontal part of the flue is inclined towards the boiler. 2 cm for each meter of the channel.

An inspection hatch is installed on the horizontal sections. A hatch is installed at the bottom of the vertical pipe. tee with plug, equipped with a hole for condensate.

Number of knees

The degree of "tortuosity" of the pipe depends on the chimney category. In the external one, the straightest pipe is passed through the wall, and on the outside it goes up to the required height.

The pipe takes its base from the boiler, passes through the layers of floors and rises above the roof. The pipe forms a two forty-five degree elbows.

Location of the flue outlet on the roof

Flue pipe above the ridge minimum by 50 cm and is distant from him by 150 cm. When deleting in 150-300 m the top of the chimney is not lower than the ridge itself. The minimum height of the chimney on a flat roof is 100 cm.

Useful video

Watch the video, which talks about the types of gas boilers and the features of their installation.

Is it legal to install a gas boiler yourself?

You can't install a gas boiler yourself, this should be done by only a qualified specialist.

Photo 3. Installation of a gas boiler. It is performed only by a qualified specialist from the gas service.

Installing a gas boiler in a private home is a much more realistic and feasible task than in a city apartment building. Whatever the premises in question, they are guided by SNiP 2.04.08-87, SNiP II-35-76 and 42-01-2002. No deviations from these standards are allowed. At a minimum, this means that a separate non-residential area with an exit to the street will have to be organized for the furnace.

This is quite feasible in a village or a summer house, but in the city it is often impossible. Moreover, The redevelopment will have to be coordinated with the gas and fire inspection authorities.

For this The following documents will be required:

• TU for installation of gas main. Development may take more than a month.
• Gasification project from an accredited organization.
• Permission to install a boiler from Gorgaz.
• Building plan.

Coordination with the Department of Architecture of the Administration may take up to three months. If necessary, documents are returned with an indication of errors and a description of how to correct them.