Something like this?
https://www.screwfix.com/p/honeywel...rc=aw.ds#product_additional_details_container
https://www.screwfix.com/p/honeywel...rc=aw.ds#product_additional_details_container
Replace a thermostat
- Thread starter Jupiter01
- Start date
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Yes that would do. 
A corresponds with the existing thermostat 1 (L)
B corresponds with the existing thermostat 2 (ON)
C corresponds with the existing thermostat 3 (OFF)
The DT90 doesn't require an earth connection, so the earth wire should be insulated/isolated and tucked safely out of the way.
A corresponds with the existing thermostat 1 (L)
B corresponds with the existing thermostat 2 (ON)
C corresponds with the existing thermostat 3 (OFF)
The DT90 doesn't require an earth connection, so the earth wire should be insulated/isolated and tucked safely out of the way.
To the untrained eye this looks like off on my current diagram and hence, wire 3. Can I double-check this please.
Thanks again
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Terminal 2 is ON
If you are looking at the switch position as drawn in the two diagrams, one is shown in the 'on' position and one is shown 'off' position (or almost 'off'
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