ᐅ New Construction Underfloor Heating System with Heat Pump is Losing Pressure
Created on: 19 Aug 2021 12:36
I
immermehr
Hello everyone,
I noticed a few weeks ago that the underfloor heating system is losing pressure. The first sign was the heat pump (HSPE Daikin) showing errors. Afterwards, I saw that the water pressure in the boiler dropped below 2 bar. After consulting with the heating technician, I topped up the water and increased the pressure to 2.7 bar. After about 6 weeks, it has dropped back to around 2 bar.
This means the underfloor heating loses about 0.1 bar each week.
Question:
Is this normal?
In summer, the underfloor heating probably isn’t running. Could this be related? Should I expect a leak?
Thank you for your answers.
I noticed a few weeks ago that the underfloor heating system is losing pressure. The first sign was the heat pump (HSPE Daikin) showing errors. Afterwards, I saw that the water pressure in the boiler dropped below 2 bar. After consulting with the heating technician, I topped up the water and increased the pressure to 2.7 bar. After about 6 weeks, it has dropped back to around 2 bar.
This means the underfloor heating loses about 0.1 bar each week.
Question:
Is this normal?
In summer, the underfloor heating probably isn’t running. Could this be related? Should I expect a leak?
Thank you for your answers.
As far as I have read, a pressure of 1.5–1.8 bar (22–26 psi) for our underfloor heating system with an air-to-water heat pump is acceptable for the house. However, over a total operating time of 5.5 years, the pressure has gradually dropped to 1.0 bar (14.5 psi). I think this is still okay, right?
Next week, a technician will come by to inspect the system (expansion vessel and valves) and perform maintenance (cleaning, venting, refilling). Then we will see if anything is defective or if it just needs to be refilled.
Next week, a technician will come by to inspect the system (expansion vessel and valves) and perform maintenance (cleaning, venting, refilling). Then we will see if anything is defective or if it just needs to be refilled.