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Support 2H thermostat
W
B
C
R
Y
G
THERMOSTAT
R
C
G
INDOOR UNIT
Figure 28
Notes:
"-----"The electric auxiliary heat connection(option).
W:Electric auxiliary heat signal.
W1 :The first Electric auxiliary heat signal.
W2 :The second Electric auxiliary heat signal.
D signal is connect to the Electric auxiliary heat or The first Electric auxiliary heat.
"*":Outdoor unit signal. Only for single-stage compressor systems.
12. Electrical - high voltage
12.1 High voltage power supply
WARNING: LIVE ELECTRICAL COMPONENTS!
During installation, testing, servicing, and trouble shooting of this
product, it may be necessary to work with live electrical components.
Failure to follow all electrical safety precautions when exposed to
live electrical components could result in death or serious injury.
The high voltage power supply must agree with the equipment
nameplate.
Power wiring must comply with National, State and Local Codes.
Follow instructions on unit wiring diagram located on the inside of the
access panel.
Figure 29
*
w1 w2
R
C
Y
OUTDOOR UNIT
Control Wiring for H/P Systems
Support 3H thermostat
W2
W1
B
C
R
Y
G
THERMOSTAT
B
D
12.2 High voltage disconnect switch
Install a separate disconnect switch at the outdoor unit.
Field provided flexible electrical conduit must be used for high voltage
wiring.
Figure 30
12.3 High voltage ground
Ground the outdoor unit per National, State and Local Code
requirements.
10
*
w1 w2
R
C
G
R
INDOOR UNIT
C
Y
B
D
OUTDOOR UNIT
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