PG
4
PG
4
PG
5
Find the step-by-step diagram for your system
• Select the reference page with your
wiring diagram and set-up
information below.
• The C-wire is required to operate
your CT80. If you do not have a
C wire you will need to provide an
alternate source of 24VAC power to
the unit.
• If your combination of wires is
shown here, you can use the wiring
table at the end of the install section
to determine your connections, or
contact customer support for help.
• When handling, take care not to
damage the labels for each wire.
G
W Y
RH RC G
6 Wire
Heat/Cool
From
HVAC
RC
C
Y RH
W
W Y R G
5 Wire
Heat/Cool
From
HVAC
G
C
Y
R
W
W R G
4 Wire
Heat
From
HVAC
C
R
G
W
From
HVAC
C
W
W R
R
3 Wire
Heat
WIRE
S
WIRE
S
WIRE
S
WIRE
S
G
R
Wn Yn R G
Multi-stage Cool
From
HVAC
Y
n
C W
n
B
or
O AUX
n
Y
n
R G
Multi-stage
Heat Pump
w/
Multi-stage
Multi-stage Heat
Aux Heat
From
HVAC
R
C
O
or
AUXn
B
G
Yn
G
B
or
O Y R G
w/o Aux Heat
From
HVAC
R
C
O
or
Y
B
WIRE
S
WIRES
WIRE
S
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14
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14
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15
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15
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16
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16
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17
Heat Pump
