LG Therma V Series Installation Manual page 20

General Information
Description
Category Symbol
TH1
TH2
TH3
TH4
TH5
F/S
Indoor Unit
E/HT
W_PUMP1
EXP/TANK
TH8
CTR/PNL
2WAY V/V_1
W/TANK
B/HT
Water
Heating
3WAY V/V_1
CITY WATER
SHOWER
TH6
TH7
3WAY V/V_2
Solar
W_PUMP/2
Heating
SOLAR THER-
MAL SYSTEM
20 Air-to-Water Heat Pump
Meaning
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 'Remote Controller')
To control water flow for Fan Coil Unit
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 by LG
AWHP Solar-Kit.
PCB Connector
CN_PIPE/OUT
- Meaning is expressed based on Cooling
mode.
CN_PIPE
- TH3, TH4, and TH5 are connected at 6 pin
CN_TH3
type connector CN_TH3.
CN_FLOW1
- Heating capacity is divided into two level :
partial capacity by E/HEAT(A) and full
capacity by E/HEAT(A) + E/HEAT(B).
CN_E/HEAT(A)
- Operating power(230V AC 50Hz) of
CN_E/HEAT(B)
E/HEAT(A) and E/HEAT(B) are supplied by
external power source via relay connector
and ELB.
- Operating power(230V AC 50Hz) of internal
CN_W/PUMP(A)
water pump is supplied by the connector.
(no connector) - Absorb volume change of heated water,
- Optional accessory (sold separately)
CN_ROOM
- Model : PQRSTA0
CN_REMO - Pre built-in at indoor unit
- 3 rd party accessory and Field installation
(sold separately)
CN_2WAY(A)
- 2 wire NO or NC type 2way valve is
supported.
- 3 rd party accessory and Field installation
(sold separately)
(no connector)
- Generating and storing sanitary hot water by
AWHP or built-in electric heater-
- 3 rd party accessory and Field installation
CN_B/HEAT(A) (usually built-in at W/TANK)
- Supplying additional water heating capacity.
- 3 rd party accessory and Field installation
CN_3WAY(A) (sold separately)
- SPDT type 3way valve is supported.
(no connector)
- Field installation
(no connector) - Field installation
- TH6 and TH7 are connected at 4 pin type
connector CN_TH4.
- TH6 is a part of sanitary water tank kit.
CN_TH4
(Model:PHLTA)
- TH7 is a part of solar thermal kit
(Model:PHLLA)
- 3 rd party accessory and Field installation
CN_3WAY(B)
(sold separately)
- SPDT type 3way valve is supported.
- 3 rd party accessory and Field installation
(sold separately)
CN_W/PUMP(B)
- If water pump of SOLAR THERMAL SYSTEM
is incapable of circulation,external water pump
can be used.
- 3 party accessory and Field installation
rd
(no connector)
(sold separately)
Remarks