Work on connecting gas to a private house: designing gas supply and installing gas equipment

The decision to connect gas to a private house is justified, since this type of fuel is the cheapest and therefore in demand among consumers. If you also decided to implement the gasification project, you should be aware that the obligatory stage is the design of the gas supply, which is required to ensure safe operation and connection of the residential facility to centralized networks.

Design work can be carried out by representatives of licensed executing firms, but the customer can familiarize himself with SNiP, gas supply will be realized with the participation of the consumer who will have the opportunity to choose a rational scheme.

Security measures

Gas is a highly flammable explosive. If even a little away from building regulations, then this can cause a tragedy. Gas is toxic and dangerous to the environment, the designer must take into account all these nuances. The owner of the house should be aware that the project is recommended to be ordered during the construction of the dwelling, since for the heating device it is necessary to allocate a separate room for the boiler room, ensuring inside the effective ventilation.

Design of gas supply system

The design of gas supply will determine the cost of work, everything will depend on the width of the pipes, the principle of wiring, the number of bends, the number of pressure stages of the selected equipment and materials. The gas pipeline that will lead to the house can be laid in one of two ways: open or underground. Underground gas pipeline costs 1.5 times more expensive than the implementation of the aboveground method. But the pipes in this case will be reliably protected from mechanical and atmospheric influences. Underground systems are safe and reliable, but with damages to find and eliminate the cause is more difficult.

When designing gas supply, it is already possible at this stage to decide whether the pipes will be above the ground. Despite the fact that such works are cheaper, some parts of the pipeline will be threatened by corrosion, they can be connected spontaneously, which is dangerous for the environment. Not always the choice of the way of laying the gas pipeline is influenced by the price factor. There are conditions that do not depend on the customer's desire, among them one can distinguish the values of ground activity that are inappropriate to the requirements of SNiP, which can lead to rapid corrosion of materials.

Necessity of laying a gas pipeline underground

In some cases, high-voltage power lines are located close enough, which require the laying of a gas pipeline underground. If an underground pipeline crosses a section of neighbors, it is not always possible to obtain their consent. Gas supply to a private house can be arranged using the technology of laying pipes underground, when the atmospheric temperature in the region falls below 45 degrees. Sometimes the project of connecting the gas pipeline to the residential building is a combined version that combines both ways of laying.

Features of designing internal networks

Gas supply to a private house can be settled only after the calculation and design of the system. These works are based on individual factors, on the basis of which the customer will select equipment by capacity and type. There are also general requirements for the creation of projects, compliance with which is mandatory. For example, to install the unit, it is necessary to allocate a boiler room, which should not be located in residential premises. On one device should be allocated 4 square meters, and the ceiling height should not be less than 2.2 meters. The doorway should have a width of 0.8 meters, and the size of the windows is calculated taking into account relying on 10 cubic meters of room 0.3 meters.

The fire should be finished with non-flammable materials. Installation of gas equipment should be carried out in a room where electricity, gas and water supply, and sewerage should be installed. To ensure the safety of electrical communications, it is necessary to provide grounding. Sewerage is required for emergency runoff. The boiler room is designed taking into account the ventilation system and two channels for the chimney. An additional first channel is necessary for installing the chimney, while the second one is for cleaning.

If you decide to purchase equipment with a natural tap, you will need a ventilation grill through which fresh air will penetrate. If you use gas as a heating source in a country house, the chimney should be made of gas-tight materials. The upper part of the smoke pipe must be above the roof. The boiler should be located away from sources of open fire, from all sides it should provide a free approach.

Recommendations of specialists in the design of the gas supply system

If the boiler has the ability to cope with the removal of combustion products, then there is no need to organize natural craving. This task will be performed by a fan, which is installed in the pipe above the roof ridge. Most often installed coaxial chimneys, which consist of a pair of pipes with different diameters. Through the external channel of the chimney, fresh air will enter the room, being warmed up by the energy of the flue gases leaving the outside. The design reduces fuel consumption and increases the efficiency of the device.

Installation of a gas boiler

Works on connecting gas to a private house are carried out in accordance with SNiP 41-01-2003. These rules and regulations mention that the gas boiler can be located in the basement or the basement, from where it is necessary to equip an additional exit to the street. If the equipment is supposed to be located in the extension, then it should be located near the blind wall of a residential building. The heating system is pressurized to 1.8 atmospheres, de-aerated and checked for leaks.

The boiler must be supplemented with a voltage regulator and an uninterruptible power supply. It is important to take into account some exceptions, among them there is no need to normalize the volume of the boiler room if the equipment has a closed combustion chamber. At the same time, a window with an exit to the outside is not required. If you purchased a boiler with a capacity of 23.3 kilowatts, then an hour will burn 2.5 cubic meters of gas. To ensure complete combustion of this volume, 30 cubic meters of air per hour will be required. In the absence of sufficient air during the operation of the equipment, the gas will not burn completely, which will cause the formation and accumulation of a substance harmful to human health.

Features of installation work

If you decide to work on connecting gas to a private house, then the equipment must be installed in the boiler room in such a way that it is illuminated through the window opening. Pipes of the gas pipeline must be made of metal only; the use of flexible hoses should be avoided, which are applicable only for connection of individual consumers. It is important to correctly calculate the section of the chimney, which according to the rules corresponds to the power of the device. If the last of the above parameters is equivalent to 30 kilowatts, the diameter of the chimney is 130 millimeters. The diameter of the chimney increases to 170 millimeters, if the boiler capacity is 40 kilowatts.

The gas connection diagram should be considered by you before starting the work, but the start-up of the system should be entrusted to professionals. The sectional area of the chimney must not be less than the cross-sectional area of the hole for its connection. The power supply system of the equipment should be supplemented with an automatic thermal and current protection device. To exclude gas leakage in the room it is necessary to install a gas analyzer, but the electric valve will automatically shut off the fuel supply.

Additional requirements

Work on connecting gas to a private house must be carried out only after the heating equipment is installed. It can be located in the basement, but the private house must be single-family. If it is a multi-apartment house, then install a gas boiler in the basement is prohibited. The device must be equipped with a gas meter by installing a ventilation system in the upper part of the boiler room. Work on connecting the house to gas is carried out on the above SNiP, gas supply, if all rules and norms are observed, will be safe. There are rules and regulations for the number II-35-76, from which you can learn about the features of the installation of boiler equipment.

Documentation

The documents for gas connection must be collected for the coordination of the gas supply project, which is carried out in GorGaz. To do this, prepare the boiler's technical data sheet, operating instructions, sanitary and hygienic certificates, as well as the conclusions of the examination of the conformity of the equipment with the necessary requirements.