S
Steve ski
Hi all,I am hoping someone out there maybe able to help me out. I look after a heating system for a customer of mine who had a very poor heating system installed by some dodgy building firm 2 years ago. oil fired firebird c35 System. Boiler fine after i fitted correct flue. The system is mostly rads but has two under floor zones conservatory and kitchen uponor mani stat for each zone but only works on one. the system is large and I believe the pipe sizing is two small for the system, Hence I can get little heat to the Radiators at the systems end no matter how Carefully I try to balance it. The problem is after fitting a new ch pump in boiler fitting extra expansion and taking out unnecessary aav's the boiler just keeps losing pressure ! no Leaks visible in house or anywhere on the system, going over on sat to try taping a bottle or bag on prv terminal pipe as this is the last thing I can think off. Any Ideas please would be welcome Many thanks in advance !!!!😡😡😡