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Hi I know this subject has been covered a few times over. But i would appreciate your thoughts. I have been alled to a fairly big house which runs underfloor heating and a 300l unvented cylinder. It's basically a primary loop which does the cylinder and the the manifolds one upstairs and 2 down. The system has recently been upgraded from a thermal store with a dedicated uf loop and ancient uf heating system. To the system I describe above. The customer is complaining every 5 days or so the system loses pressure. The prv has been changed and there is no sign of any discharge. All the primary pipework is either exposed or runningin ceilings so in theory should the leak be on the pipework it would show. This in my estimation leaves 3 options 1. There's a leak on one of the downstairs uf circuits. However they are Brand new installs and I havebeen told pressure tested at the time. 2. Theres a split in the coil on the cylinder again the cylinder is barely a year old Ithink it's unlikely. 3. Cracked heat exchanger on the boiler. It's a gloworm heat only condensing model I would say only a year or two old. Could anyone tell me if they think I'm missing ssomething obvious.
Thanks. Joe
Thanks. Joe