DIY Thermostat installing Honeywell wired T3

[kierandgaf]

Hello
I’ve just purchased a Honeywell Wired T3 thermostat to install. I’ve ran into an issues I have Drayton thermostat in the hall wall which I’m going to replace but I also have Drayton programmer upstairs in main bed room which only controls heating not water the boiler is located downstairs in the kitchen weird I know. So do I need to only replace the thermostat and leave the programmer upstairs and put it on the always on setting or do I need to leave the thermostat down stairs and replace the programmer. My boiler is glow worm flexicom30 cx

 

[brianmoooore]

It would be far the easiest to leave the programmer in place, left permanently on. If you mounted the T3 in the bedroom, in place of the programmer, it would respond to the bedroom temperature, not the hall (which is intended to be a sort of house average).