Any help on wiring a new thermostat please.
The old Thermostat is a Drayton RTM
1 = Heating (red wire)
3 = Line (Red Wire)
N = Neutral (Black Wire)
Earth (Green Wire)
The New Thermostat is a Drayton RTS5
wiring says
N
L
1 = Com
2 = Heating Satisfied
3 = Call for Heat...