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Installation Instructions
Indoor unit
Power
W14
L1
W15
L2
G
G
XT1
W3
1
W1
W4
N 2
W2
XT2
W13
D
W6 W7
W11
B
W1
W12
R
C
W10
G
Note:
1. Please refer to the installation manual to see whether the unit can connect to electric heat..
2. Connect power supply to W14(BK) and W15(WH) of X1 when not using electric heat assemblies.
3. Connect power supply to the electric heater circuit breakers when using electric heat.
4. The primary input voltage of transformer is defaulted at 230V(BK). When switching the power supply of the complete unit to 208V, connect
the primary input voltage of transformer to 208V(BU), which can be realized by exchanging the black wire and the blue wire.
5. 1 Only applicable for the unit whose motor has a ground wire.
6. As for wiring, please refer to the parameters before " /" of MCA and MOP of heat kit on the nameplate for CB1; please refer to parameters
after " /" of MCA and MOP for CB2.
31-5000486 Rev. 4
L1
CB1
X1
1
2 3 4 5 6
W5
10KW HEAT KIT
20K
X1 X2
TUBE
X10
CN5
CN7
W8
AP1
X4
JUMP
W9
X3
X13X7
Fan
X9
motor
XT3
1
①
TC
WH
BU
BK
YE
RD
G
L2
HEAT
G
CB1
X1
Code
Name
CB1
Circuit breaker
Tube
temperature
sensor
XT1-1
RD
M
BK
XT1-2
YEGN
G
L1
G
CB1CB2
G
HEAT
X1
Code
Name
②
Circuit breaker only
CB1
for 10KW heat kit
Circuit breaker only
CB2
15KW/20KW HEAT KIT
for 5/10KW heat kit
Code
Name
TC
Transformer
XT1~XT3 Wiring Board
D
Defrosting Signal
B
4-way Valve Control
Signal, energized under
the heating mode
W1
Heater Control Signal
R
24V AC Power Supply
C
24V Common
G
Indoor Unit Fan Signal
L2
CB2 CB1
17
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