Hi i went to a job in a rented 2 floor flat the boiler is down stairs and they had no heat at all to rads upstairs, some down stairs i replaced the trvs as quite a few had jammed, the downstairs ones come on but had to turn them off one by one to get heat upstairs but then when i opened them all the heat went from upstairs, for context on the picture the flow and return are on the left the branch feeds upstairs and the bottom off the tee downstairs, have they messed up on installation by teeing it that way straight off the return back from upstairs is cold to touch, is there anything i can fit to help it? Is it a balancing issue that needs more time spent on it? Combi boiler system vokera linea
Thanks
Thanks
