20
Quick Installation Guide
Wiring—conventional systems
Alternate wiring (conventional systems)
If labels do not match terminals, connect wires as shown below (see notes, below).
NOTES:
1. If you must connect both
R
and
Rc
wires, set the R Slider Tab to the
down
position (2 wires).
2. If your old thermostat had both
R
and
RH
wires, set the R Slider Tab to the
down
position (2 wires). Then connect the
R
wire to the
Rc
terminal, and the
RH
wire to the
R
terminal.
3. If your old thermostat had only 1
C
or
C1
wire, connect it to the
C
terminal. If
your old thermostat had 2
C
or
C1
wires, wrap each separately with electrical
tape and do not connect them.
AUX
S
S
Y
U
U
G
C
Y
A
Rc
W
K
W
2
R
L/A
O/B
E
Y
3
2
2
2
or
Y1
or
M
or
F
or
C1
or
X
or
B
or
W1
or
H
or
R
or
RH
or
4
or
V
