LG ARNH963K2A2 Installation Manual page 18

WIrING
Hydro Kit - K3
Figure 6 shows the wiring diagram for the High Temperature Heating Hydro Kit.
18
Figure 6: Wiring for Hydro Kit (K3 Chassis)
Due to our policy of continuous product innovation, some specifications may change without notification.
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Sockets and Connections - Main PCB
CN-3WAY (A)
To terminal strip A, screws 4,5,6
CN-CC
Optional LG Dry Contact connection
Multi V communication to outdoor or water
CN-COM
source unit
CN-CC
Optional LG Dry Contact connection
Multi V communication to outdoor or water
CN-COM
source unit
CN-EEV R410A EEV value
CN-FLOW1
Factory mounted ow switch
CN-FLOW3-4 Power to RS-484 communications PCB
CN-OPTION
Option card interface
Heat exchanger - refrigerant pipe in
CN-PIPEIN
temperature
Heat exchanger - refrigerant pipe out
CN-PIPEOUT
temperature
CN-POWER AC power to PCB
CN-REMO Hydro Kit unit controller
LG Remote Temperature Sensor (optional)
CN-ROOM
Heat exchanger-inlet water temperature
CN-TH3(TOP/LEFT)
sensor
CN-TH3(BOTTOM/ Heat exchanger-outlet water temperature
sensor
CENTER)
CN-TH4(TOP) Not used
Hot water storage tank sensor ( eld
CN-TH4(BOTTOM)
mounted)
CN-THM01 To terminal strip A, screws 7,8,9,10
CN-WRITE Not used
EARTH Earth Ground
CN-DC
Communications link with inverter board
Sockets and Connections - Inverter and Other PCB's
CN-COOLING Inverter PCB cooling fan
CN-Heater1
R134A compressor crankcase heater
CN-N/F Filtered power to inverter
AC (N)
Line power neutral
AC (L) Line power 208-230/60/1
W, U, V
Inverter compressor connection
CN-EEV1
R134A circuit EEV
CN-485/DRY
Communications link
R134A low pressure sensor
P-SENSOR (L)
P-SENSOR (H) R134A high pressure sensor
R134A compressor discharge pipe
CN-TH3
thermistor
CN-TH2
R134A compressor suction pipe thermistor
CN-INVERTER Power to noise lter
Ground
Thermistor
Fuse
Field Connections - LG Sourced Accessories
CN-ROOM LG remote temperature sensor (optional)
CN-REMO
Remote mounted Hydro Kit Unit Controller
LG Dry Contact PCB interface (3rd party
CN-CC
binary signal enable/disable
Temperature sensor: Hot water storage tank
CN-TH4 (BOTTOM)
sensor ( eld mounted)
Field Supplied Connections
TERMINAL STRIP SCREW TERMINALS
A
1, 2
A
3
A
4,5,6
A
7,8, 9, 10
Wire Color Legend
BK Black
BL Blue
BR Brown
GR Green
RD Red
YL Yellow
WH White