the piping off the boiler was 22mm. This went staight up into the ceiling void where it reduced to 15mm, and then remained 15 all the way around the house, till it comes back into the ceiling void then goes back into a 22reducer and then 22mm back into the boiler.
The amount of 22mm pipework coming off the boiler is about 1.5 meteres on the flow and 1.5 on the return.
The amount of 22mm pipework coming off the boiler is about 1.5 meteres on the flow and 1.5 on the return.