"David" wrote in message
om...
"Christian McArdle" wrote in message
.net...
Building regs require that you have a room thermostat and at least
TRV's on all radiators in sleeping areas (of course you can have
more).

Some quotes of Approved Document L1:

1.38

Temperature control could be effected by room thermostats and/or
thermostatic radiator valves or any other suitable temperature sensing
devices, together
with appropriate control devices.

1.41 (b)
Where it is proposed to effect control by thermostatic radiator valves,
a
room thermostat (or other device such as a flow switch) should also be
provided to switch off the boiler when there is no demand for heating or
hot
water.

Christian.

Gotcha. Mis-read the documentation I had (slightly) - my source
didn't have the line on 'flow switch'. I stand corrected, and promise
to check the source document in future and not something second hand.

Now I have a question - Maybe not in the regs, but I thought it was
considered 'best practice' to have the mix I went for - TRV's in some
places, and a room thermostat for overall control (along with a
conventional timer). And preferably a programmable stat. I just
can't find the reference for that information ATM.

The best is what I explained. Individual control in all rooms and a flow
switch to act the "interlock". The regs state "or other device such as a
flow switch". "Any other device" are the key words.




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