John wrote:

The stat is wireless so can be easily moved to another room but I remember
reading somewhere that there should always be one rad in the system that
doesn't have a TRV and that the stat is usually in that room, which in our
case, it is - the radiator in the lounge is the one that doesn't have a TRV.
So can the room stat safely be mounted in another room?

You have two problems to solve if you move it (and by the sounds of it
you ought to, because the other heat sources in the lounge could result
in you have a nice warm lounge and a cold house).

1) you need to ensure the TRV in the room you place the stat is not
going to stop the system working properly. This is usually straight
forward if you can remove the TRV head (they have a locking ring that
unscrews from the valve base) leaving the rad uncontrolled and at its
maximum setting.

2) You need some form of control in the lounge. The "best" solution
would be to install a TRV on this rad. However you may find that you can
achieve enough comfort simply relying on the timer/boiler cycling and
setting the rad flow rate manually. Perhaps allowing for adding top up
heat to the room from the fire etc.

--
Cheers,

John.

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