The underfloor heating thermostat system circulation pump is an important part of the underfloor heating system, and its main function is to ensure that the heated water can be circulated in a continuous and powerful way, so as to maintain a stable and comfortable indoor temperature.
1.Working Principle
In an underfloor heating system, a circulation pump for underfloor heating rotates to pull heated water from the return line and push it towards the main heat exchanger and then into the supply line. This process is repeated over and over again, powering the heated water so that it can continue to circulate. When the indoor temperature reaches a preset value, the circulation pump may stop running along with the heat source equipment such as the wall furnace to save energy.
2. Selection method
Determine the system flow rate: According to the required heating heat load of the house, the specific heat of water, the temperature of the heating outlet water and the temperature of the heating return water, and other parameters, calculate the required flow rate of the heating pipe network.
Calculate the system resistance: the system resistance includes along the pressure loss, local pressure loss and machine internal resistance. Need to calculate these resistances separately, and find the total resistance of the loop.
Selection of circulating water pumps: in the selection of circulating water pumps, should ensure that the maximum flow rate provided by the pump is greater than the system's most favorable loop of water flow, while the maximum head provided by the pump should be greater than the system's most unfavorable loop of the system resistance. In addition, should also consider the efficiency of the pump, try to make it work in the highest efficiency zone or close to the highest efficiency zone.
3. Installation and maintenance
Installation location: circulation pump for thermostatic systems is usually installed in the wall-hung boiler near the return pipe, but also according to the system needs to be installed in other suitable locations.
Installation requirements: the installation should ensure that the circulating pump and piping connection is tight, no leakage phenomenon. At the same time, should check the circulating pump power supply and control system is normal.
Maintenance: Regular maintenance of the circulating pump, including cleaning the inside of the pump, checking the power supply and control system.
4. Precautions
Avoid dry burning: the circulating pump should ensure that there is enough heating water passing through it during operation to avoid dry burning phenomenon.
Regular inspection: Regularly check the operation status of the circulating pump and the power control system to ensure its normal operation.
Professional maintenance: If the circulating pump fails or needs maintenance, it should be repaired or replaced by professional personnel.
