LG Therma V PHLLA User manual

Solar Thermal kit
PHLLA
Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
Please retain this installation manual for future reference after reading it
thoroughly.
INSTALLATION MANUAL
AIR-TO-WATER
HEAT PUMP
MFL62047302
Rev.02_030921
www.lg.com
Copyright © 2020 - 2021 LG Electronics Inc. All Rights Reserved.
Part Description
Part Description
Item Image Quantity (EA)
Sensor Holder 1
Tee Pipe
(Tube Connector) 1
Double Thermistor
Sensor
(Solar Thermal Sensor)
1
Installation Manual 1
Safety Precautions
To prevent injury to the user or other people and property damage, the following
instructions must be followed.
• Incorrect operation due to ignoring instruction will cause harm or damage. The
seriousness is classified by the following indications.
WARNING
This symbol indicates the possibility of death or serious injury.
CAUTION
This symbol indicates the possibility of injury or damage.
WARNING
Installation
• Be sure to request to the service center or installation
specialty store when installing products.
• Request to the service center or installation specialty
store when reinstalling the installed product.
• Do not disassemble, fix, and modify products randomly.
• Welding operations need attention in the fire.
• Do not install the unit in potentially explosive
atmospheres.
!
!
!
Safety Precautions
Installation Procedure
Before Installing the Solar Thermal Kit
CAUTION
• Pipe diameter of the solar thermal system : The tee pipe of the solar kit is 22 mm
in diameter. If the diameters between the pipe of the solar thermal system and
tee pipe of the solar kit are different, a pipe diameter reducer or expander, which
is supplied in the field, will be required.
• Working space for pipe welding or pipe cutting : The tee pipe of the solar kit
should be inserted into the existing pipe of the solar thermal system. To do the
insert job, cutting of the existing solar thermal system pipe and welding of the
existing solar thermal system pipe and tee pipe of the solar kit are required after
securing enough working space.
• Preparation for working fluid drainage and refilling : While installing the solar kit,
drainage of working fluid and refilling are required. Be ready to do these jobs.
How to Install the Solar Thermal Kit
Follow the procedures in Step 1 ~ Step 5 below.
Step 1. Check what will be installed
• If the DHW tank and solar kit will be installed during installation, go to Step 2-1.
• If the DHW tank is already installed, and only the solar kit will be installed during
installation, go to Step 2-2.
Step 2-1. If the DHW tank and Solar kit will be installed,
• DHW tank booster heater can be used up to 3kW.
• Turn off the main power to avoid accident such as electric shock.
• Install the DHW tank and DHW tank kit according to their respective installation
manuals. These manuals can be found in the DHW tank packaging box and DHW
tank kit packaging box. While installing the DHW tank, use a sensor inside the
solar thermal kit. (The sensor inside the DHW tank kit will not be used during
installation.)
!
Installation Procedure
Disposal of your old appliance
1. This crossed-out wheeled bin symbol indicates that waste
electrical and electronic products (WEEE) should be disposed of
separately from the municipal waste stream.
2. Old electrical products can contain hazardous substances so
correct disposal of your old appliance will help prevent potential
negative consequences for the environment and human health.
Your old appliance may contain reusable parts that could be used
to repair other products, and other valuable materials that can be
recycled to conserve limited resources.
3. You can take your appliance either to the shop where you
purchased the product, or contact your local government waste
office for details of your nearest authorised WEEE collection
point. For the most up to date information for your country please
see www.lg.com/global/recycling

Step 2-2. If the solar kit will be installed (the DHW tank is already installed),
• DHW tank booster heater can be used up to 3kW.
• Turn off the main power to avoid accident such as electric shock.
• Remove the DHW tank sensor. It will be replaced with a different sensor, which
is part of the solar thermal kit. The DHW tank sensor is located at the surface of
the DHW tank at the middle height of the tank.
• Open the control box of the indoor unit and disconnect the sensor connected at
(CN_TH4 / Solar).
Step 3. Proceed with the water pipe work according to the following directions:
• Connect the tee pipe and sensor holder.
• Inside the tee pipe, metallic particles can be made after connecting the tee plug
and sensor plug. Clean the inside of the tee pipe by flushing clean water. As
metallic particles can also be made after disconnecting the tee plug and sensor
plug, clean the tee pipe again.
• While welding the tee pipe, the sensor plug can be damaged due to welding
heat. To avoid thermal defect on the sensor plug while welding, cover the sensor
plug with wet clothes.
• Hot water from the solar thermal system should be transferred to the upper inlet
port of the heating coil of the DHW tank.
• The tee pipe should be located between the DHW tank and hot water pipe as in
Figure 1.
• To fix the tee pipe, welding or other bonding method can be applied. It can be
determined by the installer according to the field installation condition.
Figure 1
Solar
Thermal
System
(Field Supply)
Solar
Collector
(Field Supply)
DHW Tank
DHW Tank Sensor
(less than 12 m)
Solar Thermal Sensor
(less than 12 m)
Water In
Water Out
Water Out
Water In
3way valve
(Field Supply)
Pump
(Field Supply)
Tube
connector
Step 4. Installing Field Supply Parts
• A 3way valve is required to operate the solar thermal system. This 3way valve
will be used to transfer or stop hot water (generated by the solar thermal system)
into the heating coil of the DHW tank. It should be installed as in the figure
below.
• Specification of the 3way valve
(1) : SPDT = Single Pole Double Throw. Three wires consist of Live1 (for selecting
Flow A), Live 2 (for selecting Flow B), and Neutral (for common).
(2) : “Flow A” means "water flow from the indoor unit to the underfloor water
circuit".
(3) : “Flow B” means "water flow from the indoor unit to the DHW tank".
• If necessary, an additional solar pump (field supply) can be installed to transfer
hot water when the existing solar thermal system’ s water pump capacity is not
enough.
• Specification of solar pump : 230 V AC 50 Hz
Type Power Operating Mode Supported
SPDT
3-wire (1) 230 V AC Selecting “ Flow A” between “ Flow A” and “ Flow B” (2) Yes
Selecting “ Flow B” between “ Flow A” and “ Flow B” (3) Yes
Step 5. Connecting sensors and PCB Dip Switch setting
• Insert the harness into PCB(CN_TH4 / Solar) fully and fix the solar thermal sensor
into the tube connector as in Figure 2.
Figure 2
• Insert the sensor up to the cable tie as in Figure 3.
CAUTION
Sensor mounting
Insert the sensor into the sensor socket and bolt it tightly.
Figure 3
Water Pipe
Tube connector
Solar Thermal Sensor
(Double Thermistor Sensor)
CN_TH4
Indoor PCB
Water Pipe
Tube connector
Solar Thermal Sensor
(PT1000 (Field Supply))
Solar
Indoor PCB
!
• Find the DIP switch on the PCB and change the DIP switch setting as follows:
- DIP switch No. 2 : ON
- DIP switch No. 3 : OFF
※Details may vary depending on the model. For more information, refer to the
installation manual and wiring diagram.
[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service
Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands
[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu,
Changwon-si, Gyeongsangnam-do, KOREA
U.K. Importer
LG Electronics U.K. Ltd Velocity 2, Brooklands Drive, Weybridge, KT13 0SL
Installation Procedure Installation Procedure
Installation Procedure Installation Procedure
1234
1234
12345678
32
OFF
ON
SW2
SW2
32
OFF
ON