On Sat, 17 Dec 2011 22:17:30 -0000, dennis@home wrote:

AIUI it is normal to have one radiator without a TRV, the one in
the
room which contains the room thermostat.

Typical bodge made by plumbers.
What is needed is an auto bypass valve.

Which is another bodge on the bodge that didn't fit a room stat to
prevent the boiler short cycling once the house is up to temperature.

--
Cheers
Dave.