I'm in the midst of having my hall re-plastered and painted. They took the rad off the wall and now my boiler tells me it has no pressure (bar pressure gauge down at 0) When I try to refill it, water comes out of the hose the rad was attached to. Have tried to close this valve, but it has one of those funny thermostats attached to it.
I can live without central heating for the week, but want to know if this effects the hot water? Are the 2 systems completely seperate? Can I safely turn on the hot water tap / shower?
Apologies if this is a daft question