OK so I finally got to the main box its a Wirerite wiring unit. I have attached a photo of the inside and marked the wires from the room stat This was done some thirty years ago and I cant find a wiring diagram for this unit. And it looks like the earth is used for something else.
I'm trying to replace my old Horstmann HRT2 with HRT3, the wiring out of the wall is brown to no1, blue to no2 ,earth to no3 nothing in no4. I'm hoping someone can tell me how to wire the new one up I have no diagrams.
Hi I'm trying to wire up a dual hive hot water,central heating controller my Danfoss model 102, and its a three port valve with no room thermostat. Was wondering if there is a wiring diagram for this? Danfoss has a comm terminal which is confusing hive doesn't.