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Central Heating

Ways to find a leak? Pressure loss

Anonymous user 23/02/2024 - 3.43 PM

Thank you for the answers, got a Gas safe to have a look, he put in a litre of leak stop, topped up and said call if it drops again. It did within the hour and couldnt get hold of him. Changed the PRV which was sludged up. Put on a new filter and all working fine. Thanks again....... I have a 12 year old Greenstar CDi, about a month ago lost pressure. Topped up the system, but would lose about 1bar in 6 hours. Turning off the 22mm CH feed and return at the base of the boiler, the boiler holds pressure with no lose. DHW work fine. So there must be a leak in the ch system, its an old house with all above ground pipe work. In 3 zones. Zone 1 house, zone 2 and 3 extra rooms. zone 2 and 3 have been capped off, so just zone 1 on the CH and still dropps pressure. Have topped up the system mainy times, but still no leak found. Been round every rad and conection, and no sign of anything. there must be 10+ litres come out the sysem but no sign. Any ideas?

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4 Answers

Home Heat & Gas Limited

Rating: 4.8 out of 5
Stockport
It may be that on such a large system that your expansion vessel is undersized. Have you checked your PRV?
Answered10 November 2021
3

Boss Gas Installations Ltd

Rating: 4.9 out of 5
Hornchurch
As mentioned expansion possibly undersized, check your PRV with the Ch on and see if it is leaking.
Answered10 November 2021
1

cosy homes

Rating: 5 out of 5
Paignton
Ok the boiler has been working fine before so it’s the expansion vessel is shot and you may need a new pressure revile valve It will be this.
Answered15 November 2021
1

jt property services

Rating: 5 out of 5
Newcastle Upon Tyne
You must be missing something on the pipe side of things. Your best off getting in a gassafe registered engineer to have a look
Answered10 November 2021
0