11
RTH5160 Series
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.
4.
C
does not power the thermostat display or operations; batteries are always
required.
Wiring—heat pump
Connect wires: heat pump
1
Match each labeled wire with same letter on new thermostat.
2
Insert the wires into the matching terminal.
NOTE:
If you have difficulty inserting wires, you may have to press down the
terminal push button next to the corresponding terminal.
Labels don’t match?
If labels do not match letters on thermostat, see “Alternate wiring
(conventional systems)“ above.
AUX
S
S
Y
U
U
G
C
Y
A
Rc
W
K
W
2
R
L/A
O/B
E
AUX
S
S
U
U
G
C
Y
A
Rc
W
K
W
2
R
L/A
O/B
E
Y
4
2
2
3
or
Y1
or
M
or
F
or
C1
or
X
or
B
or
W1
or
H
or
R
or
RH
or
4
or
V
