Hello everyone,
My 10yrs old Valiant boiler drops pressure especially when not used, from roughly 1.2 to .7 in about a week, enough for the boiler to shut down. All the plumbing and rads are brand new. The new system was not tested with the boiler functioning because there was no electrical supply at that time to power the boiler (complete flat make over) but the plumber tested the plumbing systems for leaks with a pressure pump overnights. Under inspections, no rads/valves leaks. Unfortunately, all plumbing runs under the new floor and I'm on ground floor so no one below to report ceiling water damage. One thing to add is that the problem seems to get worse. When I moved into the new flat I notified the builder of the problem and he said the system needed balanced and asked me to keep the boiler running for several running days. Initially it seemed sorted; however the problem appeared again after few months. It seems actually worse. There is no visible water loss in the boiler cupboard. What would you suggest I do to start troubleshooting the problem? Can it really be the boiler? it didn't have a pressure loss prior the refurb. Would you use a sealant first thing and if yes what type? What other questions would you ask?
Thanks a lot.
My 10yrs old Valiant boiler drops pressure especially when not used, from roughly 1.2 to .7 in about a week, enough for the boiler to shut down. All the plumbing and rads are brand new. The new system was not tested with the boiler functioning because there was no electrical supply at that time to power the boiler (complete flat make over) but the plumber tested the plumbing systems for leaks with a pressure pump overnights. Under inspections, no rads/valves leaks. Unfortunately, all plumbing runs under the new floor and I'm on ground floor so no one below to report ceiling water damage. One thing to add is that the problem seems to get worse. When I moved into the new flat I notified the builder of the problem and he said the system needed balanced and asked me to keep the boiler running for several running days. Initially it seemed sorted; however the problem appeared again after few months. It seems actually worse. There is no visible water loss in the boiler cupboard. What would you suggest I do to start troubleshooting the problem? Can it really be the boiler? it didn't have a pressure loss prior the refurb. Would you use a sealant first thing and if yes what type? What other questions would you ask?
Thanks a lot.
