Hi
I currently have a Horstmann central heating thermostat/programmer which I want to replace with a 'user friendly' Drayton Digitat 3.
I'm not sure on how to wire it up though. Currently I have a red wire, blue, yellow and earth.
On my new thermostat I have just 3 terminals (1 Common), (2 Heating Satisfied), (3 Call for heat). - can you tell me which coloured wire needs to go to these.
Thank you
I currently have a Horstmann central heating thermostat/programmer which I want to replace with a 'user friendly' Drayton Digitat 3.
I'm not sure on how to wire it up though. Currently I have a red wire, blue, yellow and earth.
On my new thermostat I have just 3 terminals (1 Common), (2 Heating Satisfied), (3 Call for heat). - can you tell me which coloured wire needs to go to these.
Thank you