Decided to go with guess 2 with the 3rd wire in the end - not blown up yet and it switches the boiler off when it gets hot so I’m happy!
Thanks for your reply DeviledAvocado - What are these mythical devices that will revolutionise my heating arrangements - went with the cheapo thermostat...
Hi Everyone, Can anyone confirm if i've got this right?
I want to add a room thermostat to my ACL Lifestyle LP111, which controls a woster 28cdi combi boiler.
I've got a Drayton Combi-Stat RTS8 room stat to hook it all up to, but i wanted to make sure that i've got the correct idea...