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Emerson 1F78-151 wiring and compatibility

JK9000
Community Member

Wiring diagram 

 

Thanks in advance for compatibility with Nest learning or any other thermostat and wiring feedback 

1 Recommended Answer

CoolingWizard
Platinum Product Expert
Platinum Product Expert

If you have a propane fired heater and an air conditioner.  You can use any Nest Thermostat you choose. 
The W wire calls for heating and Y wire calls for cooling.  Your wire jumper between Rc and Rh can be discarded. Your B wire is likely your Power Common. 

AC Cooling Wizard

NestPro, Google Pro, Mechanical Engineer and HVAC service company owner.

View Recommended Answer in original post

4 REPLIES 4

JK9000
Community Member

forced air propane looks like W, RH, B, RC, Y and G (blue/grey wire pretty sure it's G). RH and RC have a red jumper ..so does W and B have a white jumper ..O is not connected. @CoolingWizard 

CoolingWizard
Platinum Product Expert
Platinum Product Expert

If you have a propane fired heater and an air conditioner.  You can use any Nest Thermostat you choose. 
The W wire calls for heating and Y wire calls for cooling.  Your wire jumper between Rc and Rh can be discarded. Your B wire is likely your Power Common. 

AC Cooling Wizard

NestPro, Google Pro, Mechanical Engineer and HVAC service company owner.

Much appreciated.