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6. APPENDIX
6.1 Electrical diagrams
Power supply
220-240V/50Hz
HP5171DT3
N
13
2 4
5
6
7
8
01
L
N
NN
N
N
4V
13
2 4
5
6
7
8
02
N
L
Y/G
YEL
L
N
RED
BLU
COMP
UVW
UW
V
RED BLK WHT
K2
N
N
N
N
K2
N
N
LL
ACL-out
ACN-out
ACN-in
ACL-in
1
CN1
FM1
Fan Driver Board
N
GND
485A1
12V
N
L485B1
Y/G
WHT
BLK
CN4
4V
4
1
RED
BLK
WHT
Pressure sensor
(PS)
CN9
3
RLY1
OUT2
OUT3
AC-N1
OUT4
OUT5
CN2
CN8
4
CN13
A1A3A5A7A9
A11
t
5K
SUT LP
Remote
ON/OFF
connection
A4A6A8A10
A12 A2
FS
t
5K
IT
t
5K
CTET
t
50K
t
5K
OT
t
5K
AT
6.8K
CN11
A13
GND
GND
GND
GND
+12V
0~10V-OUT
PWM-IN
PWM-OUT
L
L
EEV
5
4
4
A
GND
12V
B
W UV
AC-L
AC-N
L2
L1
CN708
CN604
CN607
Reactor
L2L1
NL
UV W
CPS Driver Board
N
L
HP
WHT 485A+
YEL 485B-
RED 12V
Controller
BLK GND
WiFi
Dry Contact
7 A max
WHT 485A+
YEL 485B-
RED 12V
BLK GND
LN
K2
12
1
2
3 4
3
4
34
MAIN BOARD
REMARKS:
PS: PRESSURE SENSOR CT: EVAPORATOR TEMPERATURE SENSOR
AT: AIR TEMPERATURE SENSOR ET: DISCHARGE TEMPERATURE SENSOR
OT: OUTLET WATER TEMPERATURE SENSOR EEV: ELECTRONIC EXPANSION VALVE
SUT: SUCTION TEMPERATURE SENSOR FM1: DC FAN MOTOR
LP: LOW PRESSURE SWITCH 4V: 4 WAYS VALVE
FS: WATER FLOW SWITCH K2: DRY CONTACT 7 A MAX
HP: HIGH PRESSURE SWITCH COMP: COMPRESSOR
IT: WATER INLET TEMPERATURE SENSOR
74


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