As the heating equipment is used, it wears out, as a result of which, over time, it may be necessary to replace the boiler. There can be many reasons for this, but the most common is the obsolescence of equipment or a decrease in its efficiency, as a result of which the efficiency of heating a home decreases, and the amount of utility bills increases. Therefore, every person who has autonomous heating installed at home should know how to replace the boiler with their own hands. We will talk about this further.
Types of gas boilers
Before we talk about how a gas boiler is replaced in a private house, let's look at what types of this equipment are.
All currently existing models of gas-fired boilers are divided into two types:
- closed-type boilers: the burner is located in the combustion chamber, and fresh air is supplied and combustion products are removed through a coaxial pipe;
- open type boilers: the burner has an open position, so that the air supply is carried out in a natural way directlyfrom the premises.
In addition, heating equipment is divided into single and double circuit. The former are designed exclusively for heating housing, while the latter are also capable of heating water to meet everyday needs.
Permits
Replacement of a boiler in a private house, as well as its maintenance and repair, can only be carried out by employees of the relevant state bodies. This is due to the fact that gas heating equipment can pose a threat to human life.
In addition, the following documents will need to be prepared for replacement:
- document confirming that the boiler room complies with all safety standards;
- DVK verification act;
- documentation for heating equipment;
- warranty service agreement;
- project of the room with changes made to it.
When all the documents are in your hands, you can go to the Gorgas to obtain permission to replace the heating equipment.
Dismantling the old boiler
Replacing a gas boiler in a private house begins with the dismantling of old equipment. You can do this yourself, since the law allows you to perform such work without obtaining permits.
Before disconnecting the equipment from the heating system, it is necessary to flush it. This is necessary in order to clean the pipes from contaminants that accumulate in them.for many years of operation of the boiler.
Dismantling is performed in the following sequence:
- water is draining from the system;
- equipment disconnected from gas and water supply;
- if you have closed equipment, it will also need to be disconnected from the ventilation system.
After that, it will be possible to start connecting new heating equipment. The dismantling can also be carried out by employees of Gorgaz, but in this case, the replacement of the boiler will require large labor and time costs.
Requirements for the boiler room
According to safety regulations, gas heating equipment must be installed in a separate room with an area of at least four square meters. In addition, the boiler room must be equipped with a good ventilation system. The place for installing the boiler should be chosen smooth and heat-resistant.
The equipment must be installed in a location that is easily accessible. If it is of a suspended type, then special brackets are used for wall mounting.
If you live in an apartment and you do not have the opportunity to allocate a separate room for the boiler, it is not recommended to install it in the bathroom due to high humidity.
What do you need to replace?
Replacement of gas boilers requires the following equipment, components and tools:
- new gas boiler;
- bracket for hanging onwall;
- ball valve - 3 pieces;
- filters for water purification from impurities and debris - 3 pcs.;
- gas valve;
- gas meter;
- KTZ;
- gas alarm;
- three-wire valve;
- voltage stabilizer;
- UPS;
- anker;
- metal sheets;
- requirements for connecting the boiler to gas and water supply;
- building level.
You can buy everything you need in any specialized store that sells heating systems.
Process of equipment replacement
Replacing a gas boiler in a house begins with an application to the appropriate authority. If you install a similar model of equipment, then changes to the project are not required. If the boiler is more modern or it will be installed in a new place, then drawing up a new project is mandatory.
When Gorgaz issues a permit, you will need to contact the company that will install the new equipment for a building passport. This document must be submitted to the gas company along with the package of documents discussed earlier in this article.
It is important to understand that the company that will install the new boiler must have a certificate authorizing this type of work. In order for the replacement of the boiler to be carried out in accordance with all safety rules and regulations, you must have an understanding of the installation technology.
Instructions for installing the boiler
If you have suspended equipment, the first step is to mount the bracket. For its fastening, anchors with a firm fit are used. In order for the boiler to hang evenly, it is recommended to use a building level when performing work. If the walls in your home are made of flammable materials, then they are sheathed with metal sheets. If the heating equipment is of the floor type, then no additional measures are required during installation. It is simply installed in the prepared place. It is worth noting that if there is any other gas equipment in the boiler room, then there must be at least 20 centimeters between it and the boiler.
You need to connect to the water supply system through mesh filters that will prevent debris from entering the heat exchanger. In this case, the pipes should be connected to the equipment through a ball valve. It is also recommended to use a special filter to purify water from impurities. This will extend the life of the equipment.
Connection to the gas pipeline is carried out through a special valve, gas meter and thermal shut-off valve. Also, a gas detector must be installed in the boiler room.
If the boiler is supposed to be connected to the electrical network, then a three-core cable with a plug is used for this. In this case, the socket must be grounded. It is recommended to use a voltage stabilizer equipped with an independent power source for connection. This will protect the boiler from failures in the power supply system.
Ifyou heating equipment of a closed type, it must be connected to the ventilation system. This is necessary to remove combustion products from the boiler. For connection, a coaxial pipe is used, which will be responsible not only for the emission of carbon monoxide, but also for supplying fresh air to the combustion chamber.
At the final stage, after connecting the equipment to all communications, the heating system is filled with water and the equipment is tested for operability. This is how a boiler of any type is replaced, regardless of model.
Possible consequences of replacing the boiler yourself
If you decide to replace the hardware yourself, you may run into very serious problems. In doing so, you not only risk your own safety, but you will also have to pay a large fine. If, after connecting the boiler to the gas pipeline, a leak of blue fuel is detected, which will lead to a fire, then all responsibility for what happened lies entirely with you. Therefore, it is not worth the risk, but it is better to contact the appropriate authority.
Conclusion
In this article, the procedure for dismantling the old and installing new heating equipment was fully considered. It is also mandatory in the case of maintenance and repair. For example, if you need to replace the boiler heat exchanger, you will also be required to call qualified specialists who are authorized to perform such work.
But if you decide to still producereplace the equipment yourself, then be sure to follow the special instructions and follow the safety precautions.
