oh yes, in response to fitz1. the back boiler is rarely used as the fire is nver lit. our main source of fuel is oil as gas is not really used in northern ireland (it is not freely pumped as in mainland UK). the overflow pumps out water continuously day and night whether or not the oill heating...
can someone help me. a plumber installed a new bathroom and fixed the hot water sytem so that the oil system would heat the bathroom bathroom radiator (previously only heated by the back boiler of the fire). since then water has been pumping out of the overflow into the yard. he claims that the...