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THERMA V
Split Type
5. Piping Diagram
Category
Symbol
S7
S8
S9
S10
S11
F/S
E/HT
Indoor Unit
W_PUMP1
EXP/TANK
S12
CTR/PNL
2WAY V/V_1
M / F
W/TANK
B/HT
Water
Heating
3WAY V/V_1
CITY WATER
SHOWER
S13
S14
3WAY V/V_2
Solar Heating
W_PUMP/2
SOLAR
THERMAL
SYSTEM
Meaning
Refrigerant temperature sensor (Gas
side)
Refrigerant temperature sensor
(Liquid side)
Entering Water temperature sensor
Leaving Water temperature sensor
Electric heater outlet 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
Magnetic Filter
DHW Tank
Electric Heater
- Flow control for water which is
leaving from indoor unit.- Flow
direction switching between
underfloor 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
components: 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_IN
- S9, S10 and S11 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(230 V AC 50 Hz) of
CN_E/HEAT(B)
E/HEAT(A) and E/HEAT(B) are supplied by
external power source via relay connector
and ELB.
- Water Pump is connected at
CN_MOTOR1
CN_MOTOR1
(no connector)
- Absorb volume change of heated water,
- Optional accessory (sold separately)-
CN_ROOM
Model : PQRSTA0
CN_REMO
- Pre built-in at indoor unit
- 3rd party accessory and Field installation
CN_2WAY(A)
(sold separately)- 2 wire NO or NC type
2way valve is supported.
- 3rd party accessory and Field installation
(sold separately)- It is strongly
(No connector)
recommended to install an additional filter
on the heating water circuit.
- 3rd party accessory and Field installation
(No connector)
(sold separately)- Generating and storing
DHW by AWHP or built-in electric heater
- 3rd party accessory and Field installation
CN_B/HEAT(A)
(usually built-in at W/TANK)- Supplying
additional water heating capacity.
- 3rd party accessory and Field installation
CN_3WAY(A)
(sold separately)- SPDT type 3way valve is
supported.
(no connector)
- Field installation
(no connector)
- Field installation
- S13 and S14 are connected at 4 pin type
connector CN_TH4.- S13 is a part of DHW
CN_TH4
tank kit.(Model:PHLTA)- S14 is a part of
solar thermal kit (Model:PHLLA)
- 3rd party accessory and Field installation
CN_3WAY(B)
(sold separately)- SPDT type 3way valve is
supported.
- 3rd party accessory and Field installation
(sold separately)- If water pump of SOLAR
CN_W/PUMP(B)
THERMAL SYSTEM is incapable of
circulation,external water pump can be
used.
- 3rd party accessory and Field installation
(no connector)
(sold separately)
Hydro Box Unit
Remarks
11
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