Swapping old central heating two channel programmer

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12 Oct 2019
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Hello,

Hoping someone can help me with swapping my old Honeywell ST699B programmer for a new Flomasta one.

I've uploaded a picture of how the Honeywell is currently wired up but can't get my head around how this should be wired up on the new Flomasta one.

There's two wires coming into the back of the Honeywell. The Neautral, Live and Earth which I'm fine with but then another cable with black and red wires.

The black wire goes to 6 on the Honeywell and the red goes to 3.

I'm fine with the Neutral and Live but the other connections are confusing me. Currently, on the Honeywell there are also two link wires. I've uploaded some pictures.

Any help greatly appreciated!
 

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Old...........New

N..............N
L...............L
3...CHon....4
4.Not used.2
5
6...HWon...3
7.Not used.1
8

You don't need the link wires in the new.
 

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