LG Therma V AHUW056A3 - Page 20

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