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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
- Meaning is expressed based on Cooling
mode.
- TH3, TH4, and TH5 are connected at 6 pin
type connector CN_TH3.
- Heating capacity is divided into two level :
partial capacity by E/HEAT(A) and full
capacity by E/HEAT(A) + E/HEAT(B).
- Operating power(230V AC 50Hz) of internal
water pump is supplied by the connector.
- Absorb volume change of heated water,
- Optional accessory (sold separately)
- Model : PQRSTA0
- Pre built-in at indoor unit
- 3
rd
party accessory and Field installation
(sold separately)
- Generating and storing sanitary hot water by
AWHP or built-in electric heater-
- 3
rd
party accessory and Field installation
(usually built-in at W/TANK)
- Supplying additional water heating capacity.
- 3
rd
party accessory and Field installation
(sold separately)
- SPDT type 3way valve is supported.
- Field installation
- Field installation
- TH6 and TH7 are connected at 4 pin type connector
CN_TH4.
- TH6 is a part of sanitary water tank kit. (Model:PHLTA)
- TH7 is a part of solar thermal kit (Model:PHLLA)
- 3
rd
party accessory and Field installation
(sold separately)
- SPDT type 3way valve is supported.
- 3
rd
party accessory and Field installation
(sold separately)
- If water pump of SOLAR THERMAL SYSTEM
is incapable of circulation,external water pump
can be used.
- 3
rd
party accessory and Field installation
(sold separately)
CN_PIPE/OUT
CN_PIPE
CN_TH3
CN_FLOW1
CN_E/HEAT(A)
CN_E/HEAT(B)
CN_W/PUMP(A)
(no connector)
CN_ROOM
CN_REMO
CN_2WAY(A)
(no connector)
CN_B/HEAT(A)
CN_3WAY(A)
(no connector)
(no connector)
CN_TH4
CN_3WAY(B)
CN_W/PUMP(B)
(no connector)
Refrigerant temperature sensor
(Gas side)
Refrigerant temperature sensor
(Liquid side)
Entering Water temperature sensor
Interim Water temperature sensor
Leaving Water temperature sensor
Flow Switch
Electric Heater
Internal Water Pump
Expansion Tank
Remote Air temperature sensor
Control Panel (or
To control water flow for Fan Coil Unit
‘Remote Controller’)
Sanitary Water Tank
Electric Heater
- Flow control for water which is leaving from
indoor unit.
- Flow direction switching between under-
floor and water tank
Water to be heated by Indoor unit and B/HT
of W/TANK
Water supplied to end-user
W/TANK water temperature sensor
Solar-heated water temperature sensor
- Flow control for water which is heated and
circulated by SOLAR THERMAL SYSTEM.
- Flow direction switching between SOLAR
THERMAL SYSTEM and W/TANK
External Water Pump
- This system can include following compo-
nents : Solar panel, Sensors, Thermostats,
Interim heat exchanger, Water pump, etc.
- To utilized hot water heated by SOLAR
THERMAL SYSTEM, end-user must buy LG
AWHP Solar-Kit.
TH1
TH2
TH3
TH4
TH5
F/S
E/HT
W_PUMP1
EXP/TANK
TH8
CTR/PNL
2WAY V/V_1
W/TANK
B/HT
3WAY V/V_1
CITY WATER
SHOWER
TH6
TH7
3WAY V/V_2
W_PUMP/2
SOLAR THER-
MAL SYSTEM
Category
Symbol
Meaning
PCB Connector
Remarks
Indoor Unit
Water
Heating
Solar
Heating
- Operating power(230V AC 50Hz) of
E/HEAT(A) and E/HEAT(B) are supplied by
external power source via relay connector
and ELB.
- 3rd party accessory and Field installation
(sold separately)
- 2wire NO or NC type 2way valve is
supported.
