6. APPENDIX
6.1 Electrical diagrams
ENPI4M
K2
L
N
1
2
TO POWER
Dry Contact
Power supply
SUPPLY
220-240V/50Hz
220-240V~/50Hz
REMARKS:
AT : AIR TEMPERATURE SENSOR
COMP : COMPRESSOR
CT : EVAPORATOR TEMPERATURE SENSOR
EEV : ELECTRONIC EXPANSION VALVE
FM : FAN MOTOR
FS : WATER FLOW SWITCH
HP : HIGH PRESSURE SWITCH
IT : WATER INLET TEMPERATURE SENSOR
22
2AC32I13WO1
V
RED BLK WHT
V
W
U
V
U
W
COMP
A
FS
B
HP
CN15
LEV1
A B
CN29
CN30
RS485
OVT
HP
IT(BLU)
SUT(GEN)
CT(YEL)
EEV
PS(SUT)
t
t
t
5
5K
5K
5K
CN24
LEV2
CN21
CN8
CN7
RES1
OPT
OAT
CN9
CN12
CN22
RES2
OHT
PH
t
t
t
5K
5K
FM
OT(RED)
ET(GRY)
AT(WHT)
reactor
P13L
P14L
A
B
4
WiFi
Controller
LP : LOW PRESSURE SWITCH
OT : OUTLET WATER TEMPERATURE SENSOR
SUT : SUCTION TEMPERATURE SENSOR
4V : 4 WAYS VALVE
K2 : DRY CONTACT 16 A MAX
ET : DISCHARGE TEMPERATURE SENSOR
PS : PRESSURE SENSOR
K2
LP
4V
CN31
CN18
LP
CN11
EMV
FOUR
CN96
CN66
CN13
CN99
RY
HEAT
PL
P03
ACL
GND
ACN
ACN1
GND
ACL1
SPS
CN2
CN1