7 69-2715EF—07
Installing your thermostat
Wiring (Heat Pump System
continued)
c In the image on the right, check the
box next to each connection. You will
use this checklist in Step 9.
d Verify wire is rmly secured by gently
pulling on wire.
e Repeat steps a–d for all other wires.
Note: If old thermostat has separate
wires on AUX and E, use a wire nut to
attach both wires to a separate wire.
Slide this third wire into the W2-Aux/E
terminal.
f Push any excess wire back into the
wall opening after all wires are
installed.
g Continue to page 8.
Labels don’t match?
See alternate wiring keys
on pages 7-8.
Important!
Check the box for each wire
you connect. You will need
this information in Step 9.
C
K
Rc
R
W-O/B
Y
G
W2-
Aux/E
Y2
L
Alternate wiring (Conventional System)
Use this if your wire labels
don’t match the terminal labels.
Note: You must have a C wire
or equivalent. See page 5.
C
R
W
Y
G
2
1
2
C
K
Rc
R
W-
O/B
Y
G
W2-
Y2
L
W1
W2
Y2
RH
4
V
Rc
R
C1
X
B
Alternate wiring key (Conventional System)
2
1
Do not use K terminal. For future use.
• If you have both an R and Rc wire, unplug the jumper loop by pulling on the wire
loop.
• If your old thermostat had both R and RH wires, connect the R wire to the Rc
terminal, the RH wire to the R terminal, and unplug the jumper loop.
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