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how do I isolate heating to trace cause of lost pressure
Posted: Sat Jul 29, 2017 12:12 pm
by joetheghost
I have a Glowworm Energy boiler that is losing pressure,I want to know if it is the boiler ,which is two years old or the piping I tried leak sealer a year ago but it didnt seem to have any effect.I cant see any leakage signs like drips or such
Re: how do I isolate heating to trace cause of lost pressure
Posted: Sat Jul 29, 2017 4:04 pm
by Someone-Else
I am not a heating engineer. Have you looked outside? if your boiler has a pressure relief valve it may be "letting by"
(A prv has a pipe from inside to outside, and outside it will run to a drain / gutter. The idea being if the pressure gets too high the prv opens and "dumps" all the water to reduce pressure. If it has operated it may not have sealed properly)
Re: how do I isolate heating to trace cause of lost pressure
Posted: Sun Jul 30, 2017 9:06 am
by gas4you
Pressurise boiler to 2bar, shut isolating valves to flow and return under the boiler, leave boiler unused for as long as possible.
If pressure drops then leak is somewhere on the boiler itself, if pressure drops when you open the valves, then leak is somewhere on the pipe work/rads etc.
Re: how do I isolate heating to trace cause of lost pressure
Posted: Sun Jul 30, 2017 11:18 am
by joetheghost
gas4you wrote:Pressurise boiler to 2bar, shut isolating valves to flow and return under the boiler, leave boiler unused for as long as possible.
If pressure drops then leak is somewhere on the boiler itself, if pressure drops when you open the valves, then leak is somewhere on the pipe work/rads etc.
Thanks for your reply ,I can't see any shut off valves coming out of the boiler so I m wondering if they are integral or part of the boiler itself,instead of being on the pipe work.The boiler is Glowworm Energy.
Re: how do I isolate heating to trace cause of lost pressure
Posted: Sun Jul 30, 2017 11:45 am
by Someone-Else
Have you looked underneath?
Re: how do I isolate heating to trace cause of lost pressure
Posted: Mon Jul 31, 2017 5:13 pm
by joetheghost
Yes I looked underneath but couldnt see any sign of leakage ,did you mean to look underneath for a shut off valve or such b cause I wouldn t recognise one if I saw it.
Re: how do I isolate heating to trace cause of lost pressure
Posted: Mon Aug 07, 2017 7:42 pm
by joetheghost
joetheghost wrote:Yes I looked underneath but couldn't see any sign of leakage ,did you mean to look underneath for a shut off valve or such b cause I wouldn' t recognise one if I saw it.
Couldyou osta pic of whatever it is that the screwdriver is aimed at in your pic
