Värmesystem vatten tryck - Hitachi
Can anyone advice on the heating system ; I installed in an year ago
Hitachi Yutaki S Combi 4HP R410 system with outdoor air-to-water unit
I’m having trouble understanding the circuit water pressure. I initially set the pressure to around 1.4 bar when the system was switched off. For about a week, the system operated between 1.42–1.55 bar, and during heating it increased to around 1.65–1.70 bar.
However, the pressure has been gradually decreasing during operation. Under similar weather conditions now (after about 3 weeks), it runs between 1.22–1.34 bar, and during heating it reaches around 1.40–1.45 bar.
There is no indication of any leakage; I had a visit from technician he said that expansion vessel has broken and need replacement which was replaced but situation of gradual water pressure remain same
Is this normal, or should I check for a potential issue?
Hitachi Yutaki S Combi 4HP R410 system with outdoor air-to-water unit
I’m having trouble understanding the circuit water pressure. I initially set the pressure to around 1.4 bar when the system was switched off. For about a week, the system operated between 1.42–1.55 bar, and during heating it increased to around 1.65–1.70 bar.
However, the pressure has been gradually decreasing during operation. Under similar weather conditions now (after about 3 weeks), it runs between 1.22–1.34 bar, and during heating it reaches around 1.40–1.45 bar.
There is no indication of any leakage; I had a visit from technician he said that expansion vessel has broken and need replacement which was replaced but situation of gradual water pressure remain same
Is this normal, or should I check for a potential issue?
