Replacing Honeywell ST699 Programmer
- Thread starter Shepp1966
- Start date
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ST699 L to ST9400C L
N to N
3 (Heating NO) to 4 (CH ON)
6 (Hot Water NO) to 3 (HW ON)
7 (Hot Water NC) to 1 (HW OFF)
Plus, Green/yellow wire to earth terminal.
The two red link wires currently connecting L to 5 and 8 on the ST699 are no longer required.
N to N
3 (Heating NO) to 4 (CH ON)
6 (Hot Water NO) to 3 (HW ON)
7 (Hot Water NC) to 1 (HW OFF)
Plus, Green/yellow wire to earth terminal.
The two red link wires currently connecting L to 5 and 8 on the ST699 are no longer required.
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