About 2 years ago I had my boiler moved and an additional radiator installed, since then the radiators have been getting warm through the returns when only the hot water is on. The only changes to the original pipework are as follows: The return for the new radiator tees off past where the central heating return joins the hot water return, yet this radiator does not get as hot as the rest of the radiators. This one uses microbore as opposed to the 15mm of the rest of the radiators. The flow and return are now longer but the original pipe work has not been altered before these extensions,other than above. One other point is there is a pipe teeing off from the flow between the pump and the three way motorised valve that goes through some sort of calibrated valve and then is connected back into the return, now this pipe gets as hot as the flow immediately the hot water comes on, is this right? I have British Gas cover but I am afraid the plumber might have inadvertently done something wrong and they might not cover this! Help!
- posted
19 years ago