fit pressure reducing valve on supply to heating before filler loop then set it to 1.5 bar , this will stop u constanly toppin up system . then u need to find were leak is it has to be some were good luck
darren
December 2011
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.