Hi Guys
Have I got it right by saying if I fit a programmable thermostat to an open vented y plan system I just keep the main programmer on constant heating mode?
I need to keep the existing programmer to control the hot water.
Thanks
Pete
Have I got it right by saying if I fit a programmable thermostat to an open vented y plan system I just keep the main programmer on constant heating mode?
I need to keep the existing programmer to control the hot water.
Thanks
Pete