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How do you properly install and configure a Nest thermostat…

How do you properly install...
How do you properly install and configure a Nest thermostat for a dual fuel system?For reference, the current thermostat (Braeburn 2220NC) uses the following wiring terminals:
Rc (with jumper to Rh)
Y1
G
W1/E
W2
O
C
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Answered in 21 minutes by:
3/17/2018
Bill
Bill, HVAC Technician
Category: HVAC
Satisfied Customers: 111
Experience: Service Mgr
Verified

Hello,

Do you have the new Nest thermostat mounted and some wires already in?

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Customer reply replied 4 months ago
it was mounted about an hour ago. Still need to connect the wires to the terminals though.

Ok just a moment.

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Old.....................New

Rc (with jumper to Rh) to Rh (red)
Y1 to Y1 (yellow)
G to G (green)
W1/E to W1 (black)
W2 to aux (white)
O to O/B (orange)
C to C (Blue)

Then the Nest will step through set up with you

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For clarity, AUX is not the " * " terminal, but the W2/AUX terminal as shown on the attached image, correct?

That is correct..W2/Aux

FYI, this is the 3rd generation Nest if that matters at all. The Nest series all wire the same for your particular situation

Bill
Bill, HVAC Technician
Category: HVAC
Satisfied Customers: 111
Experience: Service Mgr
Verified
Bill and 87 other HVAC Specialists are ready to help you
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Customer reply replied 4 months ago
Working through step-by-step setup for the Nest. One question it is asking is what outdoor temp. should be considered to use the alternate heating. Is there optimal temp. this should be set at?
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