Thanks plumbbob. So is this the correct order? Boiler flow (28mm), Open expansion vent tee (22mm), within 150mm cold water feed tee (15mm) then pump inlet (sucktion)?
When a MV opens or closes it operates a micro switch. This switch closes when the valve is open. The pump and boiler ignigition are connecetd in parallel via this switch so that the pump starts at the same time as the boiler calls for heat. It sounds like you missed a wire off somewhere. I hope this...
My heating system was installed in 1981 when the bungalow was built. It consists of a wall mounted Ideal Concord WCF 255A boiler with the flow and return (28mm) going up into the loft where the pump and 3 motorised valves are fitted (I think it was called an S plan plus). This allows separate temp a...
