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Hi guys, My client has a leak on this system. It is a big house with 21 radiators all fed by this condensing Remeha condensing boiler. He has had the Remeha approved installers out to diagnose the boiler, they say that there is no leak outwith the pipes, so we isolated the pipe work and put tracer gas in - we got no significant readings any where in the house, and more telling, the gas pressure did not drop over the 2 hrs we had it up at 2.5 bars. ( the client has been losing 1.2 bar per day.) - gas particles are smaller and should leak more easily.
So if there is no leak in the pipes, is there anything that the remeha techs could have missed, and what are the different causes of pressure loss in a condensing boiler system.
Thanks in advance of your advice guys.