How to tie a heating boiler with your own hands?
The boiler piping ensures uninterrupted and efficient circulation of the coolant in the heating system of the room. Proper connection of the boiler to the distribution network will prevent overheating of the equipment.
The choice of material is of the utmost importance. The pipeline must be reliable, practical and inexpensive, as well as easy to install and not be subject to corrosion.
Polypropylene
The most commonly used pipelines are made of polypropylene. This material is resistant to aggressive environmental influences and plaque formation.
Polypropylene pipes are connected to each other by soldering, and not by fittings like metal ones. Due to this, a strong monolithic connection is obtained, excluding the possibility of leaks.
In addition, most manufacturers give a guarantee of up to 40 years on their products. In this case, the pressure in the system can rise up to 25 bar, and the temperature up to 95°C. And this means that the piping of the heating boiler will not only be as reliable as possible, but durable.
Metal eyeliner
However, it should be borne in mind that the gas supply to the water heater must be rigid!
The best option is a metal pipe and a metal drive or "American". As a sealant, only a paronite gasket can be used. It is paronite that is most often used in the installation of boilers, because this material is not combustible, keeps its shape perfectly and keeps the connection tight for a long time. Paronite is a mixture of asbestos fibers, rubber and mineral additives.
The principle of strapping by type of placement
The heat generator occupies a key place in the heating circuit. Does the connection diagram of the elements of the heating system depend on the type of location of the boiler?
Floor
If it is planned to tie a floor-type heating boiler, the line should be designed so that the heat generator is not the highest point of the pipeline.
In no case should this rule be neglected, especially if the device is not equipped with an air exhaust system, because then air jams will constantly form in the heating network. The supply riser must be located strictly vertically.
Wall
Another thing is the binding of a wall-mounted boiler. As a rule, any gas or electric boiler with a wall mounting method has an automatic air vent.
The presence of this element is evidenced by the branch pipes in the lower part of the boiler body. The piping of the wall-mounted boiler must necessarily take into account this feature of the equipment configuration.
Optimal piping of boilers of various types
The piping of a gas boiler is a system of additional devices mounted between the boiler and radiators, it regulates the direction and intensity of movement of the coolant. Regardless of the type of heating - gas, electric, solid fuel, it is divided into two types:
- natural - gravitational;
- forced - using a circulation pump (more economical).
Natural
natural circulation
This piping is easy to install and does not require installation of a circulation pump in the system. It is enough to place the pipeline at a slight slope so that the heated coolant can flow into the heating radiators, and the cooled one can drain back to the boiler. This scheme is suitable for small one-story private buildings.
Forced
The best option for a two-story house is a forced circulation system.
As already mentioned, in systems with forced movement of the coolant, an electric pump is required. This means that in addition to the energy resources necessary for the operation of the gas or solid fuel heat generator itself, electricity will be constantly required. If power outages are frequent in your area, there will be interruptions in space heating.
At the same time, such heat supply systems allow you to fully control the temperature regime in the building, changing the heating of individual rooms at your discretion. According to this method, the boiler room located in a separate room can be tied.
Applicable devices
If the circulation of the coolant is forced, then it is necessary to select additional elements such as a circulation pump, safety sensors, etc. The typical installation scheme for these devices does not depend on the installation method of the boiler - floor or wall.
Expansion tank
A properly made do-it-yourself connection provides compensation for the thermal expansion of the coolant; for this, an expansion tank of an open or membrane (closed) type is used.
Safety system
In the event of a significant increase in the design pressure, a safety group is activated, which consists of protective and blast valves and a cooling coil. The presence of the last element requires piping a pellet boiler.
Air outlet
Removal of air from the system is provided by:
- Mayevsky's crane;
- automatic air vent;
- simple taps.
Circulation
The circulation pump is responsible for the optimal movement of the coolant in the heating system.
IMPORTANT! It is advisable to tie the circulation pump into the system with shut-off valves and a bypass. This makes it possible to switch the system on with your own hands in the event of a power outage.
Filter
Filtration of various contaminants (slags, particles of corrosion and sand) is performed by a sump. It is especially important for diesel and electric boilers.
Typical scheme
The piping scheme for a double-circuit gas boiler necessarily includes several mud collectors for water filtration. It is advisable to equip the expansion tank with a protective valve that bleeds excess coolant into the drain. An additional electric boiler will allow you to use thermal energy more economically by heating water for hot water supply.
Despite the complexity and higher cost, this type is more economical and easy to use. It allows you to control the temperature in each room. One of the main disadvantages is volatility. In the event of a power outage, the efficiency of the system is significantly reduced.
Radiators
Tying radiators, as well as boilers, is made of polypropylene. With its use, the piping system is tight and reliable.
Strapping options
There are two schemes for piping radiators. With a single-pipe type, all radiators are connected in series, temperature control is possible only when tapped into the bypass system. With the two-pipe method, a more efficient supply of coolant occurs, it cools down less and the load on the boiler decreases.
Connecting pipes directly to the radiator must be done so that the coolant flow passes through the entire inner surface without the formation of stagnation zones.
IMPORTANT! Pipes to the batteries should be connected through taps, so that in case of damage to the radiator, the defective area should be excluded from the overall system.
