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Central Heating
2.3 bar - GCH turned on, Is this higher than it should be
Anonymous user 23 February 2024 - 3.52 PM
Hello, Due to previous constantly high bar pressure >2.5, even when the boiler was turned off, I have just had my gas boiler repaired, new expansion vessel and filling loop fitted. The pressure was set at 1.5 bar, 3 days later, I turned on the central heating for 25 minutes and found that the pressure was now 2.3 bar. After turning off the central heating & checking 10 minutes later, the pressure was now 1.9 bar. Are these pressure readings ok and within the acceptable range. I have a Vaillant 825 ecotec plus which has a digital pressure gauge. Thanks for your advice on this matter.
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4 Answers
RJL plumbing and heating
Hi 2.3 is a little high, however the pressure will naturally go up and down depending on whether your heating is on or off.
If your heating is on it will expand and raise the gauge, when it's cooled down it will drop back to 1.5.
It could do with some pressure being released to drop the pressure down
Answered16 May 2023
4
George Whittle
2.3 is fine if boiler is at its full temp.
as long as it drops back to same position it started at when it was cold
Answered17 May 2023
1
L2Z Central Heating and Boiler Repairs Ltd
No reviews yet
The answer is ok but I would have changed the PRV the same time as the expansion vessel.
2.3 bar is ok, nothing to worry about as long as the pressure gauge stays below 3 bar.
Answered29 May 2023
0
JB Plumbing
Slightly high although pressure will rise till boiler hits desired temperature. Should maybe release a little pressure and keep an eye on it
Answered31 May 2023
0