Cylinder Thermostat swap
- Thread starter Diyryan
- Start date
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D
Deleted member 267285
I would have thought Common and 2 (normally open), but I’m not the best at wiring. How is it wired currently?
Both diagrams are shown in the 'call for heat' position.
So with the switchmaster you should presently have wires in 1 & 2 (3 may be vacant or not depending on the system you have)
1 = C at the ES-CTS
2 = 1 at the ES-CTS
If the 3rd wire is used
3 = 2 at the ES-CTS
So with the switchmaster you should presently have wires in 1 & 2 (3 may be vacant or not depending on the system you have)
1 = C at the ES-CTS
2 = 1 at the ES-CTS
If the 3rd wire is used
3 = 2 at the ES-CTS
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