Swapped a conventional system for a new Worcester boiler and changed every rad. After a week when the system was on a radiator was half cold so i bled lots of air. Then refilled pressure to 1 bar but it now zooms back to 0 bar overnight each time - but heating and hot water still seems to work. Didn't have pressure problem with old system. Searched for leaks but can't see one. Boiler firm say might be pipes for 2 rads in my lounge in a concrete floor so are coming to put new surface pipes in but i'm worried the problem will still be there and i'll have ugly surface pipes. Completely at a loss. Can i just leave boiler at low pressure or will i hurt the boiler? Do i just top up every other day for evermore? Is it something the boilermen did and can i expect them to solve it or is it my pipework and i'm stuck with it? Or have i hurt the boiler because i bled a radiator when the heating was on and, if so, what might be wrong with it?
Low water pressure on new combi
- Thread starter jim1972
- Start date
Pressurise boiler to about 2 Bar, isolate from heating system at valves under the boiler.
Leave as long as possible. If pressure remains constant, then drops when you open the iso valves, then it is a leak on th system somewhere.
If not the boiler is at fault.
Leave as long as possible. If pressure remains constant, then drops when you open the iso valves, then it is a leak on th system somewhere.
If not the boiler is at fault.
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