Our gas central heating boiler also provides hot water via a hot tank, loca ted in the cellar. Becaue of the distance from the hot tank to the rest of the house, the hot water pipes are looped through the house to the kitchen and bathroom, and is driven by a circulation pump. This pump has now comple telp seized.
I tested it, using the very helpful guide here:
ìLQr3Z1pFk The pump is a Wilo Z25, which I have now discoverd is very expensive. The c heapest online I've found is about Â£400. As far as I can tell, this also includes the brass flanges that connect the pump to the rest of the hot wat er system.
Is it possible to buy the motor, without having to buy the brass flange?
The Wilo Z25 pump is about 13 years old, and looking at the Wilo website, i t seems that the following pumps are available: Z25/2, Z25/5, Z25/6 and Z25 /10. I believ that the one I need is the Z25/2, because its power rating is about the same (~50W, single phase) as the old one I have.
Many thanks, Paul