Features of connecting a gas boiler to electricity, gas, chimney

Features of connecting a gas boiler to electricity, gas, chimney Connecting a gas boiler is a very important stage in the process of gasification of buildings. In addition to the huge variety of existing connection methods, this work is quite dangerous and you can do it yourself only under the clear guidance of specialists. A gas boiler is essentially high-tech equipment and the choice of connection method will depend on many factors, including individual conditions.

Gas heating has become very popular lately and there are reasons for this. Such as convenient use, there are no additional waste on operation, the efficiency of the heating system, ease of management and a fairly reasonable price of fuel.

For normal operation of the heating system of your home, it is necessary to connect the gas equipment in accordance with all existing requirements and standards.

Stages of connecting a gas boiler

The process of connecting the boiler to the system is very laborious and requires the right professional approach. In an effort to save money and an attempt to independently perform these actions can lead to undesirable consequences, in addition, all warranties for the device when connected by oneself will be canceled.

Steps of connection: installation of the device, connection of the heating circuit and heating system, as well as to the gas pipe.

All stages have their own characteristics, which is extremely important to observe in order to achieve the safety and efficient operation of the entire heating network.

Before we move on to acquaintance with each stage, we need to figure out what the choice of the connection scheme depends on.

It should be borne in mind that this system is open or closed, how the coolant moves in it - spontaneously or by the action of a pumping unit. The heating system itself with one high-temperature radiator or with several circuits, heating the floors. The type of the unit itself is also very important - one or two-circuit, the combustion chamber is open or closed, convector or condensing. All this is taken into account when choosing a scheme.

Installation of the unit

For the device of the floor model, the construction of a special foundation is required. The wall-mounted one is hung using the holder that comes with the device.

When select the location of the boiler it is necessary to take into account the following nuances :

  • The room must have an opening window;
  • No appliances should be located near the gas device.

On note: Set unit can be and on its own, but connect only with using qualified specialist.After execution of connection specialist writes corresponding act about connecting and this document is fundamental at issuing permission about entering in operation device by gas service.

Connection of single-circuit devices

In the single-circuit type, there is 1 heat exchanger that heats only one circuit. Previously, this type was used exclusively for the function of heating the room, but now it is possible to connect it to a boiler for domestic hot water. When connecting such a unit, 2 pipes with a heat transfer substance are supplied to it. One is needed to enter the liquid into the boiler for heating, and 2 to exit it in an already heated state.
To remove excess pressure from the system, a safety valve and an expansion tank are installed.

The scheme consists in connecting a water heating device to the boiler, which is represented by a thermally insulated container, through a valve with a thermostat with water. The boiler has a spiral heat exchanger through which the heated water moves.

Water supply is a priority here. When the water in the boiler cools down, the sensor is triggered and the entire amount of heated coolant from the boiler strives to the water heater. Here it transfers its thermal energy and flows in the opposite direction.

This process is continuously repeated until the water in the electric heater reaches the required temperature. After that, the three-way valve again works and the substance for transferring heat tends to the heating system, where it will circulate, according to the principle from the boiler to the heating and vice versa, before the water in the boiler starts to cool.

Note : When occurs heating water boiler transmitting heat substance not moves in system heating. How long it will take heating boiler depends on from size. So, for for example, heating boiler with size in two hundred liters heats up for about six hours, and his warming up can take not more than hours.

Eighty liter boiler will heat up in twenty minutes. However, this is not like is not can affect on temperature of your home, i.e. because for such a short term it will not cool down.

Subtleties of joining the double-circuit type

This scheme will be a little more complicated.

Since there are 2 heat exchange elements here, for heating and domestic hot water, and there will be a connection of four nozzles to pipes for various purposes.

The main heat exchanger is connected to the heating, and the second one on both sides with the hot water supply, and the water supply. The entire automatic system of such boilers is located inside, including a circulation pump, a three-way valve, and steam fittings. The principle of operation of the hot water supply mode is similar to the operation of a single-circuit type with a boiler. The main function belongs to the same three-way valve.

Many systems do not involve the use of a pump, since natural circulation occurs.

Features of connecting a gas boiler to electricity, gas, chimney In the case of the provided pump, it is installed on the bypass circuit. The mud collector is installed in front of the pumping unit, and shut-off valves (American) are placed on the sides. This is done to facilitate removal for cleaning without draining the coolant. The connection of 2 heat exchange devices for hot water supply is almost the same.

Only on the connection circuit with the water pipe is it better to install a filter device to retain dirt particles.

Electrical connection

The boiler can be connected to electrical energy in 2 ways: using a cable and plug for the socket and using a three-core insulated cable.

On Note : Connection Gas device to power supply produced by with using automatic circuit breaker to distribution board board with obligatory grounding.

Not far from the unit, an automatic shutdown is installed. Even if you have your own wire and plug, it is better to make a separate electrical outlet through a circuit breaker.

Features of connection with a chimney

For one type of boilers, a regular chimney is needed, the second is coaxial, and some do not need it at all. The first and main rule when connecting a chimney is that the diameter of its pipe is taken the same as that of the outlet. What diameter the chimney will be is calculated based on the power indicator. For example, for a power of 24 kW, the diameter will be 120 mm, for 30 kW -130, etc.

The diameter of the branch pipe connecting to the unit is taken up to twenty-five centimeters.

Some types of boilers with a closed combustion chamber require a significant flow of air, which can be provided by an air vent or an additional supply pipe. The chimney material must be acid resistant.

Important: Forbidden in as connecting section boiler with chimney corrugation, and also chimney make brick, because in the process combustion acid vapors will contribute to destruction of of its walls.

Installation of the coaxial chimney is carried out in a strictly horizontal position with outlet to the wall. This chimney is represented by the construction of a pipe in a pipe.

The inner part of the pipe performs the function of removing vapors from the unit, and the outer part is needed to supply air to the combustion chamber. This heats up the air and increases the efficiency of the boiler.