M
Mik
Hi all. Hope you can give some advice on the following. Son's victorian house in on three levels. Existing system on a combi . with 12 rads. The ground floor level is fed from the 1 st floor with risers and droppers to the rads on the two levels. the last rad on the system was installed in 10mm micro bore . The rad did not get hot at all. (luke warm). I have removed old pipe back to 1 st floor level and propose to drop new 15mm to the system. Should have said this micro bore was only on the last rad in the system. I assume an after thought done on cheap.
I had noticed prior to removal of rads for damp proofing work that the second on system to last rad did not get very hot . lets say warm. I assume that because the system is over the three floors that the pump is at its limits . Do you think that 22mm pipes would be a benefit on the this last dropper. I would say 4.00 metre each legnth for the flow and return. This last rad is also in the hall, and son wants as big arad as possible . I am not so sure . Any thoughts would be gratefully received. I plant to return to complete work for him on Wednesday . He lives 200 miles away so want to go with a plan. PS existing rads rating way below boiler capacity (Worcester) incl making allwance of 5000 btu for hot water.
I had noticed prior to removal of rads for damp proofing work that the second on system to last rad did not get very hot . lets say warm. I assume that because the system is over the three floors that the pump is at its limits . Do you think that 22mm pipes would be a benefit on the this last dropper. I would say 4.00 metre each legnth for the flow and return. This last rad is also in the hall, and son wants as big arad as possible . I am not so sure . Any thoughts would be gratefully received. I plant to return to complete work for him on Wednesday . He lives 200 miles away so want to go with a plan. PS existing rads rating way below boiler capacity (Worcester) incl making allwance of 5000 btu for hot water.