"John" wrote in message
...
I should have asked the installer but he's now away on holiday (

Anyway, just had an Alpha boiler installed (CD32C) and wireless room
stat/programmer/timer thingy. The boiler itself has a thermostat numbered
0-9, there's the room stat, and then all the rads except one have
thermostatic valves. Which thermostat takes priority and what should the
one
on the boiler be set at?


Boiler thermostat sets the temp the water is heated to. Set to achieve about
80°C (prob about 7 on your scale). Room thermostat controls the room temp
(of that room) the boiler cuts out at and as such should have been placed in
a sensible room that is not heated another way. I set mine at 20°C but
something you're comfortable with, the others TRV's on the rads take up the
difference since different parts of the house will cool and heat up at
different rates, so these will all be trial and error to achieve temps
appropriate for the room, ie lounge hot and bedroom cool. So long as you
understand the basis of the setup I have explained the rest is trial and
error for your house. Have your rads been balanced, now is the time to do
that: http://www.diyfaq.org.uk/plumbing/rad-balance.html

--
Mike W