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Stevemarch1969
Apologies, reposted in central heating forum.
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Discuss New radiator in loft causing problems in the Plumbing Jobs | The Job-board area at PlumbersForums.net
The only correct way of sorting it out is to run the return from the rad back to the heating circuit. An easy solution would be to take the connection from the rad before the 3 port so that it is on whenever the heating or hot water is on and fit a TRV. Alternatively run it from the hot water circuit so it comes on with the hot water.
Not the best solution but the least disruptive.
3 position mid position 3 port valve is :
hw only
ch only
hw and ch at the same time
2 position diverter 3 port valve is :
hw only
ch and hot water at the same time
can you select CH ONLY from programmer and run it independently without the need for HW to be on too ?
i did not ask my Q correctly
If you select CH only does boiler works and you get CH , or do you have to have hot water selected at the same time to have Ch running ?
so you have a 3 position 3 port valve
i think piping it to after the 3 port on the Hw side will be your best option or
have it piped as a bypass radiator and it will be on at all the time and then secondary control will be your thermostatic radiator valve
as mention before by MJ ,
flow from before 3 port valve and return back to return pipe
Daft question, is there a chance he's used a directional TRV and put it on the wrong side of the rad?
or NRV is faced wrong way
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