Requirements for a room for installing a gas boiler: basic rules of SNiP

1 General requirements

1.1 How are the dimensions of the room and the power of the unit related?

1.2 Other requirements

1.3 Kitchen requirements

2 Rules for installing gas boilers

2.1 Requirements for wall units

3 Conclusion on the topic

Requirements for the premises

The installation of a boiler room for a gas boiler is a very serious matter. Anyone who has encountered this problem at least once knows how many requirements are placed on the room where the gas boiler will be located. Interestingly, the question of how to install a wall-mounted gas boiler sounds much more often. After all, many believe that this installation process is the main one.

Do not forget that according to many technical documents (SNiP), the room where the gas boiler is installed belongs to the category of fire and explosion hazard. Therefore, even at the stage of designing a boiler room, and even more so at the stage of installation and configuration, all requirements must be strictly met.

General requirements

There are certain requirements for all rooms where gas boilers are installed:

First of all, attention is drawn to the lighting of the room. According to the standards, 0.03 m² of window opening is required per cubic meter of space. Note that this is a clear space through which daylight will pass. It does not take into account the window frame or partitions between the panes. That is, the net area of double-glazed windows.

A prerequisite is a supply and exhaust ventilation system. Please note that the air volume of the space must change 3 times in 1 hour. This is a prerequisite for minimizing the gas contamination of the room.

The window must be equipped with a window leaf. But the exit door should lead only to the street. Many suburban developers ignore this rule and, as a result, receive a notification from representatives of the fire inspectorate about the need to comply with it. As a result, you have to break through the door in the wall, spending money, time, and effort on this.

How are the dimensions of the room and the power of the unit related?

There are also certain rules that relate to the relationship between the size of the room and the power of gas boilers.

We bring to your attention several positions:

If the power of the gas boiler for heating does not exceed 30 kW, then the volume of the boiler room can be within 7.5 m³. And this is the minimum.

If the productivity is 30–60 kW, then the volume of the room is 13.5 m³.

If the power exceeds 60 kW, then the volume of the room is determined according to the passport data of the heater, but not less than 15 m³.

Many consumers, especially those who decide to organize autonomous heating in a city apartment, often ask about the possibility of installing gas boilers for heating and determining the premises for them. Let's just say that there are no strict restrictions in this regard, if all the requirements imposed by the rules and norms of SNiP are met in these premises.

Of course, it is necessary to especially note the kitchens, where these rules and norms are already guaranteed by the project of the house. But here there is one important nuance. It is necessary to take into account the total heat output coming from all heating appliances in the kitchen. Here we include the cooking stove, heating elements, heating radiators, boilers and more. So their total power should not exceed 150 kW.

Other requirements

Installation of a gas boiler indoors

And a few more requirements:

The ceiling height in the boiler room should not be less than 2 m.

The boiler room should be separated from other rooms by strong refractory partitions.

The material from which the furnace is built must have a temporary fire resistance limit of at least 45 minutes. That is, in case of fire, the walls, floor and ceiling must contain the flames of fire during this time.

The optimal layout should be such that the fire from the boiler room does not spread to other rooms of a private house or apartment.

kitchen requirements

When it comes to a private house, or rather, the installation of gas boilers in it, problems with requirements are solved easily and quickly. Organizing a separate furnace is not difficult. It will be necessary to attach a small room with your own hands that meets the necessary standards. This will have little effect on the cost of construction.

But installing a gas boiler in an apartment is a much more complicated matter. The best room for this is the kitchen. But even it has certain requirements. We will not once again remind you of the norms that have already been described above. All of them must be fully implemented without any deviations.

But there are additional requirements:

Firstly, only a wall-mounted gas boiler can be installed in the kitchen, and it is better that it be with a closed combustion chamber and a coaxial chimney. Currently, manufacturers offer double-circuit models that can provide an apartment not only with an autonomous heating system, but also with hot water in full.

Secondly, in addition to increasing the air exchange in the room, you need to make a hole in the front door and install a grill on it. The opening area should not be less than 0.02 m².

If the kitchen space does not fully comply with the requirements of SNiP, then the installation of a gas boiler for heating is possible (note - POSSIBLE), if the gas supervision authorities give permission for this.

If the kitchen in your apartment has a volume of less than 7.5 m³, then two heating elements cannot be installed in it.

Attention! All rules and requirements for the installation of gas boilers in private houses and city apartments are identical. There are no distinctions here. The only difference is the organization of a separate boiler room for a private house and the combination of one of the apartment's rooms with a furnace.

Rules for installing gas boilers

Installed floor boiler according to the rules

Everyone knows that gas boilers in the same model range differ in the installation method. There are two groups - floor and wall units. Their difference is not only that they are mounted differently, but also in different technical characteristics. They are especially different from each other in terms of power.

Floor units are more powerful, while wall units are low-power. Hence their dimensions. Therefore, in apartments, wall structures are most often installed, and in private housing construction - floor structures.

Requirements for outdoor units:

The organization of a separate room, where a through hole for air flow is arranged in the front door, or a window with a window is installed. The ideal solution is the arrangement of a ventilation system, where air is removed from the room through a hole under the ceiling.

Installation of a sealed chimney for a floor boiler. Very often, if a high-capacity gas boiler is used, a double chimney is installed in a pipe-in-pipe type. This provides a 100% guarantee of absolute tightness of the chimney structure.

The boiler room itself should be spacious with free access to the heating unit for maintenance and repair work. The boiler room must be provided with water supply and sewerage.

Since floor models have significant weight, a solid floor made of non-combustible materials must be built under them. It can be a concrete screed, stone, paving stones, ceramic tiles and more.

The front door must meet certain dimensions. The minimum door width is 80 cm. SNiP also determines the minimum dimensions of the room for the boiler room. But life makes its own demands, so the optimal dimensions of the furnace for the most low-power outdoor units are as follows - an area of 4 m², a ceiling height of at least 2.5 m.

All wiring for the floor standing unit must be concealed. Be sure to install a separate switchboard in the boiler room.

The walls are finished only with non-combustible materials - plaster, facing bricks, ceramic tiles and so on. It is forbidden to store flammable substances in the boiler room. It is impossible to arrange a chimney exhaust and air intake into the ventilation nearby. Both systems should be located in different parts of the room.

Requirements for wall units

Minimum distance requirements

With this option, everything is much easier. Being installed in the kitchen, it is provided with sewerage, plumbing, ventilation, and a connected gas main. That is, the installation and connection costs are significantly reduced, and the cost of the work performed is reduced.

But there are some requirements that must be taken into account:

Firstly, installing a wall-mounted gas boiler is only possible on a solid wall that can support its weight. Plasterboard or plywood partitions are not suitable for this.

If the walls have already been finished before the installation of the gas appliance, and combustible materials were used, then a sheet of non-combustible material with a thickness of at least 3 mm must be installed under the boiler.

There are minimum distances from the installed gas boiler to the supporting structures of the building. To the walls and ceiling - 0.5 m, to the floor - 0.8 m.

Do-it-yourself connection of gas boilers is prohibited. This is especially true for the gas pipeline. It has its own requirements, the main of which is the availability of permission to perform this type of work. If you have it, then there is no problem - you can do everything yourself.

You can adjust the boiler yourself, but we recommend entrusting the first adjustment to a professional. Here it is important to carry out everything in full accordance with the requirements that apply to the instructions for the gas boiler.

Conclusion on the topic

When the consumer faces the problem of installing a gas boiler, first of all it is necessary to choose the right heating unit itself. And based on its power, then select the size of the room, fulfilling all other requirements.

Requirements for a room for installing a gas boiler: basic rules of SNiP

General requirements