Main Frequently asked questions How to connect underfloor heating to a solid fuel boiler?

Як правильно підключити теплу підлогу до котла

Lately, underfloor heating is increasingly being used for space heating. To make this heating option effective, you need to figure out how to connect a warm floor to the boiler. After all, the reliability, safety and efficiency of the equipment will depend on this.

connecting a warm floor to a solid fuel boiler

What can be the problems when connecting?

Despite the convenience and efficiency of underfloor heating, some problems may arise when connecting it to a solid fuel boiler:

    Solid fuel equipment, unlike gas equipment, may not have an automatic coolant circulation control system. Therefore, to ensure a stable coolant supply temperature, it is additionally necessary to install a circulation pump.
  1. Even if the circulation pump is installed, it is possible that it will stop. This can happen in the event of a breakdown or power outage. As a result, the coolant inside the system may boil. And an increase in pressure in the system can lead to an accident. Even if the boiler is able to withstand high temperature and pressure, when the temperature of the coolant rises to 100 degrees and above, plastic pipes may be damaged.
Thus, when connecting a warm floor to a solid fuel boiler, it is important that the process of heat transfer is continuous.

Ways to connect water floor heating to a solid fuel boiler

There are several ways to connect a warm floor to a solid fuel boiler. Each of them has its own characteristics.

Wiring diagram with a heat accumulator

To make the water floor heating powered by a solid fuel boiler as reliable and efficient as possible, a heat accumulator is installed in the system. The expansion tank will compensate for the expansion of the liquid inside the system. To ensure the regulation of the coolant, a distribution comb is installed in the system.

In this case, the heat accumulator will take on excess heat and provide protection against elevated temperatures by regulating the temperature of the coolant supply to the circuit. Thanks to the use of a buffer tank, you can additionally save on fuel by reducing its consumption.

underfloor heating from the boiler

When choosing this connection option, it is necessary to take into account that:

    Additional free space is required for installation, connection, and maintenance of the buffer tank.
  1. Installing a heat accumulator requires additional costs. Depending on the volume of the tank, its cost varies from 600 to 1000 dollars.
Wiring diagram with additional radiators

Due to the lack of free space for installing an expansion tank or in the absence of finance, it is sometimes impossible to use the previous connection option. In this case, the method of wiring with a cast iron radiator is used. Its main task is to remove excess heat.

connection of underfloor heating from a solid fuel boiler

For example, when leaving the boiler, the temperature of the coolant can reach 75 degrees. At the same time, at the outlet of the radiator, it will not exceed 40 degrees. In order to use heat rationally, it is necessary to think in advance about the location of the cast iron battery. This will avoid heat loss.

This method is used infrequently due to the fact that it requires constant monitoring of the temperature of the coolant in the system.

If you are in doubt about which option is right for you, you should seek help from a professional. He will select the best way to connect a warm floor to a TT boiler, taking into account all the nuances.

Back to the articles