L
laguna
Hi - I'm looking for some advice on a constant boiler pressure drop. Its a pressurised system in the garage with a Main 28kw boiler 2 years old. Ive had the problem about three weeks or so now. Ive checked the pressure for 4 days at the same time when the system is cold and the pressure dropped about 1bar over this time. Yesterday afternoon 16.00 I turned off the boiler on the programmer (water and heating), refilled the system to 1.5bar and took a photo of the guage every 2 hours until 9.30am. Its dropped about 0.3 bar in 17.5 hours. this is without the boiler running at all, correct me if I'm wrong but the water must have escaped somewhere in the house through the sealed loop of central heating pipework... right? I don't now what sort of volume of water this would be, but there are no visible signs in the ceiling, rads or damp patches anywhere. I'm guessing there problem is underground under tiles and the concrete floor. I'd like to do some more analysis, maybe isolate upstairs and downstairs heating somehow and see what that does...