I'm going install a wirefree room thermostat tomorrow in my house.
The unit consist of a relay switching box that connects to the boiler and the wireless receiver which is mounted in the living area.
Is there a regulation on cable thickness that runs from the boiler board to the relay box?
Many Thanks
The unit consist of a relay switching box that connects to the boiler and the wireless receiver which is mounted in the living area.
Is there a regulation on cable thickness that runs from the boiler board to the relay box?
Many Thanks