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Thermostat compatibility with Williams in wall gas

Riasdfasdf
Community Member
1 Recommended Answer

Patrick_Caezza
Platinum Product Expert
Platinum Product Expert

@Riasdfasdf 

You have a Millivolt furnace, which isn't directly compatible with any smart thermostats.

You can use any Nest thermostat, but you must also use the Google Nest Power Connector, external 24vac transformer and possibly a relay.

Try this wiring.

2022-04-06_182952.jpg

2022-03-01_173137.jpg


To ensure that I see your reply, please tag me using @Patrick_Caezza

View Recommended Answer in original post

1 REPLY 1

Patrick_Caezza
Platinum Product Expert
Platinum Product Expert

@Riasdfasdf 

You have a Millivolt furnace, which isn't directly compatible with any smart thermostats.

You can use any Nest thermostat, but you must also use the Google Nest Power Connector, external 24vac transformer and possibly a relay.

Try this wiring.

2022-04-06_182952.jpg

2022-03-01_173137.jpg


To ensure that I see your reply, please tag me using @Patrick_Caezza