Hi folks,
I have recently replaced the plastic HW heat exchanger with a Zilmet Stainless type. Everything seems to operate well, except that the system pressure gauge rises above 2bar after about a day. Draining the system from the pressure release valve reduces it, but it slowly builds up again after that. There is no flow into the CH system from the flow service cock and I can only assume that there is a leak in the heat exchanger allowing the HW supply into the CH system. Is there anything else I should look at before I return the unit?
Thanks,
Graham
I have recently replaced the plastic HW heat exchanger with a Zilmet Stainless type. Everything seems to operate well, except that the system pressure gauge rises above 2bar after about a day. Draining the system from the pressure release valve reduces it, but it slowly builds up again after that. There is no flow into the CH system from the flow service cock and I can only assume that there is a leak in the heat exchanger allowing the HW supply into the CH system. Is there anything else I should look at before I return the unit?
Thanks,
Graham