LG THERMA V HN0613M Installation Manual page 38

GENERAL INFORMATION
38
Description
Category Symbol
S9 Refrigerant temperature sensor (Gas side)
S10 Refrigerant temperature sensor (Liquid side)
S11 Entering water temperature sensor
S12 Leaving water temperature sensor
S13 Backup heater outlet temperature sensor
S17 Flow Sensor
S19 Entering Water Pressure sensor
S20 Reserved
S21 Remote room air sensor (Direct circuit)
Indoor unit
A1 Internal water pump
/ Main
circuit
A2 External pump
A8 / A9 Backup heater (2 steps)
2-way valve to block underfloor circuit from
A12
cooling water
EXP/TANK Expansion vessel
CTR/PNL Control panel / Remote controller
M/F Magnetic filter
S14 DHW tank temperature
3-way valve for changing between heating
A5
(cooling) and DHW tank
Domestic
hot
water
A10 DHW booster heater
circuit
W/TANK Domestic hot water tank
A15 Recirculation pump
S23 Reserved
S15 Solar collector sensor
Solar
S16 DHW tank temperature (Low)
thermal
circuit
A4 Solar collector pump
Solar thermal Solar thermal equipment such as collector, solar
system pump, PT1000 sensor, solar heat-exchanger
Meaning PCB Connector
CN_PIPE_OUT
CN_PIPE_IN
(WATER IN)
(PHEX OUT)
(HEATER OUT)
CN_F_SENSOR
CN_H2O_PRESS - to monitor water pressure
TB_SENSOR
(AMBIENT)
CN_ROOM1
CN_PUMP_A1
CN_MOTOR1
(PUMP A2)
Coil 1: CN_L1,
Coil 2: CN_L2,
on HEATER-PCB
CN_2WAY_A
CN_REMO
CN_TH4 (BOOST)
CN_3WAY_A
CN_TANK_HEATER
CN_PUMP A15
CN_RECIRC
TB_SENSOR
CN_TH4 (SOLAR)
CN_PUMP_A4
- NTC5kOhm
- NTC5kOhm
CN_TH3
CN_TH3 - NTC5kOhm - S11,S12 and S13 are connected at
6-pin-type connector CN_TH3
CN_TH3
- to monitor water flow rate
- Accessory: PQRSTA0
- NTC10kOhm
- Power is supplied via CN_PUMP_A1
- PWM signal is supplied via CN_MOTOR1
- voltage-free contact
TB_EXT
- External water pump if head of internal pump is
not sufficient or if parallel buffer tank is used
CN_N1
- Operating power(230 V AC 50 Hz) is supplied by
external power source via Terminal block
CN_N2
- 3rd party accessory and Field installation (sold
separately)
- 2-wire NO- or NC-type 2-way valve is supported.
- - Absorbs volume change of eating water
- 3rd party accessory and Field installation (sold
separately)
-
- It is Mandatory to install an additional filter on the
heating water circuit.
- S14 is connected at 4-pin-type connector CN_TH4
- Accessory: PHRSTA0
- S14 is a part of DHW tank kit (Model : PHLTA)
- 3rd party accessory and Field installation
(sold separately)
- SPDT type 3way valve is supported.
- 3rd party accessory and Field installation
(sold separately)
- Operating power (230 V AC 50 Hz) is supplied by
external power source via Terminal block
- Accessory: PHLTA (Relay, harness and DHW
sensor)
- Accessory (OSHW-series) or third-party tank
-
suitable for heat pumps
- 3rd party accessory and Field installation (sold
separately)
(SOLAR)
- PT1000
- S16 is connected at 4-pin-type connector CN_TH4
- Accessory : PHLLA
- To control the temperature of DHW tank when
using solar heating
- 3rd party accessory and Field installation
(sold separately)
- 3rd party accessory and Field installation
-
(sold separately)
Remarks