- Joined
- 13 Nov 2016
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So...
Topped it up to 1.5 bar and then isolated it from CH and not used hot water for the last 19 hours.
Placed a tied bag around the Pressure relief valve pipe outside - Often PRV don’t shut back off if they’ve been used a lot. Considering the expansion vessel was flat before and it was causing pressure to rise then dump it out the valve thought this could be the culprit of the leak.
Additionally intercepted the condensation distribution/condensation waste from the boiler into a jug.
Left it for 19 hours, results as follows:
At 23:00 before going to bed: boiler pressure at 1.5bar temp at 33 degrees (longest I could let it cool from showers before going to bed). No water in PRV bag or condense jug.
At 07:57 before going to work the following morning: boiler pressure at 0.9bar temp 21 degrees. No water in PRV bag - although pipe end was damp. No water in condense jug.
at 19:35 this evening back from work. boiler pressure at 0.8bar, temp at 18 degrees. Condensed water droplets on inside of bag, pipe end had a drop on it. A thimbles worth of water in condense jug.
So now - could the drop in pressure I see when isolated be explained by simple physics of the water being hotter, then cooler, then cooler still + a tiny leak of the PRV? Is there an easy way to disconnect the valve to the pipe outside so I can see any leak in it clearly?
I'm guessing a leak at the PRV would get worse when the boiler is on as it's under more pressure - so this could be the leak i'm having. Or I also have a small leak somewhere in the tiny bit of my flat that is unsighted. Joy (although at this rate i'd rather it that than a new exchanger!).
Topped it up to 1.5 bar and then isolated it from CH and not used hot water for the last 19 hours.
Placed a tied bag around the Pressure relief valve pipe outside - Often PRV don’t shut back off if they’ve been used a lot. Considering the expansion vessel was flat before and it was causing pressure to rise then dump it out the valve thought this could be the culprit of the leak.
Additionally intercepted the condensation distribution/condensation waste from the boiler into a jug.
Left it for 19 hours, results as follows:
At 23:00 before going to bed: boiler pressure at 1.5bar temp at 33 degrees (longest I could let it cool from showers before going to bed). No water in PRV bag or condense jug.
At 07:57 before going to work the following morning: boiler pressure at 0.9bar temp 21 degrees. No water in PRV bag - although pipe end was damp. No water in condense jug.
at 19:35 this evening back from work. boiler pressure at 0.8bar, temp at 18 degrees. Condensed water droplets on inside of bag, pipe end had a drop on it. A thimbles worth of water in condense jug.
So now - could the drop in pressure I see when isolated be explained by simple physics of the water being hotter, then cooler, then cooler still + a tiny leak of the PRV? Is there an easy way to disconnect the valve to the pipe outside so I can see any leak in it clearly?
I'm guessing a leak at the PRV would get worse when the boiler is on as it's under more pressure - so this could be the leak i'm having. Or I also have a small leak somewhere in the tiny bit of my flat that is unsighted. Joy (although at this rate i'd rather it that than a new exchanger!).
