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Upgrading from Horstmann 425 Diadem (no thermostat connected) on an oil boiler (Myson) to Drayton Wiser kit 2.
I'm just trying to confirm exact wire placement for the new plate. There are a few loops from the old system which I suspect are done internally/switching system with the wiser 2.
Horstmann 425 diagrams and pictures
Wiser 2 diagrams
Oil boiler
Horstmann 425 wires
1
2
3
4
5
6
7
8
9
Drayton Wiser 2 Wiring setup
Back panel plate
1
2
3
4
5
6
I'm just trying to confirm exact wire placement for the new plate. There are a few loops from the old system which I suspect are done internally/switching system with the wiser 2.
Horstmann 425 diagrams and pictures
Wiser 2 diagrams
Oil boiler
Horstmann 425 wires
1
2
3
4
5
6
7
8
9
Drayton Wiser 2 Wiring setup
Back panel plate
1
2
3
4
5
6