the verticalĭistance between Expansion Vessel and highest point of system, usually the top of bedroom radiators. "The Expansion Vessel is suitable for systems with a static head of up to 5 metres (16.5ft) i.e. The maximum pressure should be 22 psi (I think) but would normally be between. The pressure was 3.5 psi and you lowered it to 20psi? Later tonight I'll run the heating and see what the gauge does, but I'm just wondering if anyone can point me in the direction of what might be wrong. The pressure then climbed up to about the 2 bar mark, however I've just come home tonight and checked it and its back down at 0. Last night I topped the system up to just half a bar and then ran the heating. If I top the system up to pressure (roughly 2bar) and then run the heating, the pressure will climb until it hits 3 bar and the safety valve opens and dumps out some water. Most of the time this is no problem, however from time to time it seems to cause the pump to squeal loudly until its topped up again. I've had trouble with it since last year on and off and a couple of engineers have looked at it but have been unable to solve it.īasically the pressure gauge on the control panel shows 0. System is installed for a bungalow with 9 radiators attached. Hope someone can point me in the correct direction here with this strange pressure issue I'm experiencing with our heating system.
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