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6. APPENDIX
6.2 Wiring Diagram - HP70A1
COMP
WHT
CC
CR
CS
RED
BLK
L22
C1
L22
C2
KS
1
2
2
KS
5
L22
L22
KM1
L1
L1
L1
L1
L1
L2
L1
BLK WHT
L1
L2
1
TO PUMP
TO POWER SUPPLY
208-230V~/60Hz
AT：Ambient temperature
COMP：Compressor
CH：Compressor heater
CT：Coil temperature
EEV：Electronic expand valve
ET：Exhaust temperature
FM：Fan motor
FS：Flow switch
HP11：High pressure protection( 4.0Mpa)
HP12：High pressure protection( 4.4Mpa)
IT：Inlet water temperature
KM1：Contactor of compressor
K1：Realy of compressor
KS：Relay coil of compressor start
LP：Low pressure protection
OT：Outlet water temperature
SUT：Suction temperature
TC：Transformer
4V： 4 way valve
C3
BLK
BLU
FM
RED
4V
OUT3
2
3
OUT4
240V
OUT5
AC-N
2
TC
12V
5
1
3
L2
01
L2
6
2
4
HP12
KM1
K1
OUT1
2
FS
Controller
K1
7
8
CH
EEV
5
OUT2
5
4
LP
HP11
REMOTE IN
50K
ET
GND
t
ET
AI06
5K
AT
GND
t
AT
AI05
5K
CT
GND
t
CT
AI04
5K
OT
GND
t
OT
AI03
5K
IT
GND
t
IT
AI02
5K
SUT
GND
t
SUT
AI01
+5V
GND
18
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