Greenstar 24i to CM61 room termostat

[ukpun]

I've been trying to connect my Greenstar 24i boiler to a CM61 room thermostat as the boiler makes the house very hot. What seems like a simple wiring diagram has resulted in several blown fuses so far.

Listings are boiler first.

--> Ns to B
--> Ls to A

Blown fuse

--> Ns to A
--> Ls to B

Blown fuse

--> Ns to A
--> Ls to B
Link Lr / Ls in

Blown fuse

What's the correct solution please as I'm spending a fortune on gas.

 

[Bolty123]

You want to switch ls and lr to a and b don't connect neutral to the switch contacts. Connect the neutral to neutral in clock if you don't already have one there.

 

[ukpun]

I've made the connections and now set the boiler control to On and run the whole systems via the room control. Boiler is already has a reduced workload.

Many thanks!!

 

[EFLImpudence]

Blowing fuses is not an acceptable way of seeing if you have done it correctly which you obviously hadn't.

Did the product not come with a wiring diagram?

 

[ukpun]

The product did come with a manual, however your comments aren't exactly helpful. My error was made through connecting the natural link when only live and switched live connections are required. I believe this is the case for a lot our boilers. A light switch uses live and common for the same thing so now I know.