Where's the thermostat?
In message , Sam
Farrell writes
My son in law has a central heating system that doesn't appear to have a
thermostat. There is no thingy on the wall that you can adjust.
It uses a ACL Drayton LP522 control unit. Does this have a built in
thermostat
no, it's purely a programmer
or do I need to fit one externally?
Sam
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geoff
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