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pressure loss on combi baxi condensing boiler

Posted: Fri Nov 23, 2007 7:20 pm
by diy frek
had boiler fitted in jan theis year,started to loose preesure from 1 bar to 0 in about 1 houre had baxi engineer down 2 said thers no problem with boiler put fernox sealer in ,pressue holds when heating is on and with hot water when heating is i losse pressure again gose down to 0 any ideas please

Posted: Fri Nov 23, 2007 10:34 pm
by htg engineer
Does pressure rise when the heating is on ? could be expansion vessel

does pressure rise when heating is off ? could be plate heat-ex

does the pressure relief valve, discharge pipe have any water coming from it ? it could be passing.

are there any leaks on radiators, pipework, or are any of the pipes feeding the radiators buried in concrete or under the floor where it could be leaking but not seen ?

pressue loss

Posted: Sun Nov 25, 2007 4:29 pm
by diy frek
pressure rises when heating is on ,then looses presure when it gose off