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I'm just finishing off a bunch of plumbing and electrical work ahead of having an engineered oak floor fitted on Monday. One of the last jobs is fitting two new radiators, plastering the pipes into the wall and re-fitting the floorboards that the new pipes run under.
I've just fired up the boiler to check no leaks and was disappointed to find that the return side is heating up before the feed side. On inspection this is down to the previous idiot owner who seems to have used blind cowboys for every job he had done in the house. Yes, the other 2 rads on the downstairs circuit have got their TRVs on the wrong end - and I used them to work out which pipe was which.
I really really don't want to drain it all down again and start switching the pipes across, partly because of the time I've got and partly because of the £34 of inhibitor and silencer I've put in the system.
So, given that the downstairs has been fine this last winter (all connected wrong) , and the 2 new rads will probably be on full most the time as they're heating a big kitchen diner, and I'm not planning a fancy wireless/zoned type system, does it really matter that the TRVs are on the return?
Depends if its bi-directional
all the TRVs in my house have arrows on to show they can be fitted either side of the radiator.
If ts bi-directional it will have an L shaped arrow with a head on each end
i cant see that there's any difference. all the TRV is doing is putting a restriction in flow, doesn't matter where it is in the part of the circuit it will have the same effect?
i cant see that there’s any difference. all the TRV is doing is putting a restriction in flow, doesn’t matter where it is in the part of the circuit it will have the same effect?
Depends on the design of the valve, some thermostats/valves only apply force one way, so of they're on the inlet side they have to push the valve closed, but let the water pressure push the vale open (or vice versa).
Almost all valves are bi-directional though with a spring in the valve pushing it up and the actuator in the thermostat pushing it down.
Thanks guys, I think it'll be OK.