Combi being used for HW only

[ArtfulBodger]

Went to a dry cleaners today to connect up the gas supply to a new meter. They have had a Sime combi fitted whose only purpose is to heat a HWC running one tap.

I suggested that we detach all of the indirect side; single impeller pump, HWC and cold water cistern which she agreed to but she doesn't want even a single rad on the heating circuit.

Does anyone know how big a 22mm loop I need to satisfy the CH side?

Ta

 

[kevplumb]

wouldnt need that much your only dumping the heat after the hw stops

(sticks neck on block) 4m

 

[ArtfulBodger]

Cheers Kev, that'a about what I though. Short enough to be cheap to do, long enough to look ridiculous!