LG Therma V AHUW056A3 Engineering Product Data Book page 20

THERMA V
Split Type
6. Piping Diagram
Category Symbol
Refrigerant temperature sensor
TH1
(Gas side)
Refrigerant temperature sensor
TH2
(Liquid side)
TH3 Entering Water temperature sensor
TH4 Interim Water temperature sensor
TH5 Leaving Water temperature sensor
F/S Flow Switch
E/HT Electric Heater
Indoor Unit
W_PUMP1 Internal Water Pump
EXP/TANK Expansion Tank
TH8 Remote Air temperature sensor
CTR/PNL Control Panel (or 'Remote Controller')
2WAY
To control water flow for Fan Coil Unit
V/V_1
M/F Magnetic Filter
W/TANK DHW Tank
B/HT Electric Heater
Water
- Flow control for water which is
Heating
leaving from indoor unit.
3WAY
V/V_1 - Flow direction switching between
under- floor and water tank.
CITY Water to be heated by Indoor unit and
WATER B/HT of W/TANK
SHOWER Water supplied to end-user
TH6 W/TANK water temperature sensor
Solar-heated water temperature
TH7
sensor
- Flow control for water which is
heated and circulated by SOLAR
THERMAL SYSTEM.
3WAY
V/V_2
- Flow direction switching between
SOLAR THERMAL SYSTEM and
W/TANK
Solar
Heating
W_PUMP/2 External Water Pump
- This system can include following
compo- nents : Solar panel, Sensors,
Thermostats, Interim heat exchanger,
SOLAR
Water pump, etc.
THER- MAL
- To utilized hot water heated by
SYSTEM
SOLAR THERMAL SYSTEM,
end-user must by LG AWHP
Solar-Kit.
Meaning PCB Connector
CN_PIPE_OUT
CN_PIPE_IN
CN_TH3
CN_FLOW1
CN_E/HEAT(A)
CN_E/HEAT(B)
CN_MOTOR1
(no connector)
CN_ROOM
CN_REMO
CN_2WAY(A)
(No connector)
(no connector)
CN_B/HEAT(A)
CN_3WAY(A)
(no connector)
(no connector)
CN_TH4
CN_3WAY(B)
CN_W/PUMP(B)
(no connector)
Remarks
- 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 E/HEAT(A) and
E/HEAT(B) are supplied by external power source
via relay connector and ELB.Y12
- Water Pump is connected at CN_MOTOR1
- Absorb volume change of heated water,
- Optional accessory (sold separately)
- Model : PQRSTA0
- Pre built-in at indoor unit
- 3rd party accessory and Field installation
(sold separately)
- 2 wire NO or NC type 2way valve is supported
- 3rd party accessory and Field installation
(sold separately)
- It is strongly recommended to install an additional
filter on the heating water circuit.
- 3rd party accessory and Field installation
(sold separately)
- Generating and storing DHW by AWHP
or built-in electric heater
- 3rd party accessory and Field installation
(usually built-in at W/TANK)
- Supplying additional water heating capacity.
- 3rd 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 DHW tank kit. (Model:PHLTA)
- TH7 is a part of solar thermal kit (Model:PHLLA)
- 3rd party accessory and Field installation
(sold separately)
- SPDT type 3way valve is supported.
- 3rd party accessory and Field installation
(sold separately)
- If water pump of SOLAR THERMAL SYSTEM is
incapable of circulation,external water pump
can be used.
- 3rd party accessory and Field installation
(sold separately)
Hydro Box Unit
11