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?

TIA,

Puzzled of Cleethorpes