Recent content by mjsp

Fab. That all makes sense and wiring is as I expected. Thanks for your help, will purchase. ...no idea why the guy in the other thread had his issue.

Hello. I would like to improve my CH system to have a more intelligent thermostat. Currently the CH and HW are both controlled on a Honeywell ST6400C timer near the boiler, while this also connects to a simple T6360 room thermostat in the hallway to control the CH. I want to have more control...