LG THERMA V HA031M E1 User manual

BACKUP HEATER
SERVICE MANUAL
(Exploded View)
AIR-TO-WATER HEAT PUMP
HA031M E1
HA061M E1
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
The appliance shall be disconnected from its power source during service and when
replacing parts.
CONFIDENTIAL
Copyright © 2018 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.

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Copyright © 2018 - 2019 LG Electronics Inc.
All rights reserved. Only training and service purposes.
Model number nomenclature
1. Model Information
Model name and related information
Electric Heater 1 Series
Leaving Water Combination
None : Low Temperature Leaving Water
H : High Temperature Leaving Water
M : Middle Temperature Leaving Water
Electrical ratings
1 : 220-240 V~ 50 Hz
3 : 380-415 V 3~ 50 Hz
Nominal Heating Capacity Indication Conversion to kW
Ex) “03” : 03 kW
“06” : 06 kW
“12” : 12 kW
Accessory
H : Air to Water Heat Pump
H A 0 6 1 M E1
Capacity (kW) Power Source
6380-415 V 3~ 50 Hz
6220-240 V ~ 50 Hz
3220-240 V ~ 50 Hz

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Copyright © 2018 - 2019 LG Electronics Inc.
All rights reserved. Only training and service purposes.
Note
1. The specification may be subject to change without prior notice for purpose of improvement.
2. Specification
Backup Heater Model
AHEH066A(HA061M E1) AHEH036A(HA031M E1) AHEH068A (HA063M E1)
Power Supply Ø / V / Hz 1 / 220-240 / 50 1 / 220-240 / 50 3 / 380-415 / 50
Capacity kW 6 3 6
operational current Max. A24 12 8.7
Dimensions Unit(W × H × D) mm 210 × 607 × 220 210 × 607 × 220 210 × 607 × 220
Packed Unit(W × H × D) mm 294 x 728 x 278 309 x 738 x 293 294 x 728 x 278
Weight Unit kg 13.8 13 14.1
Packed Unit kg 15.2 14.4 15.4
Safety Device Anti-overheating -Thermostat Thermostat Thermostat
Water Pipe Entering Side Diameter mm Ø28 Ø28 Ø28
Leaving Side Diameter mm Ø28 Ø28 Ø28
Wiring Cable
Power Supply Type
(H07RN-F) mm2×cores 4 x 3C 1.5 x 3C 2.5 x 4C
Communication Cable mm2×cores 0.75 x 4C 0.75 x 2C 0.75 x 2C
Sensor Cable 0.75 x 2C 0.75 x 2C 0.75 x 2C
Temperature
Sensor Thermistor Assembly,NTC 5 kΩ ± 5 % 5 kΩ ± 5 % 5 kΩ ± 5 %
Circuit breaker A40 20 20

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Copyright © 2018 - 2019 LG Electronics Inc.
All rights reserved. Only training and service purposes.
3. External Apprearance
Backup Heater Box
Item Item Quantity
Backup Heater 1
Installation
Manual 1
Installation
Sheet 1
Terminal Block KIT 1
Screw 1

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Copyright © 2018 - 2019 LG Electronics Inc.
All rights reserved. Only training and service purposes.
4. Wiring Diagrams
1Ø 3 kW
1Ø 6 kW

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Copyright © 2018 - 2019 LG Electronics Inc.
All rights reserved. Only training and service purposes.
3Ø 6 kW

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Copyright © 2018 - 2019 LG Electronics Inc.
All rights reserved. Only training and service purposes.
5. Typical Installation Example
nTypical Installation Example
Floor + Backup heater (Only Heating)
Floor+Convector+Backup heater (Heating + Cooling)
Buffer
Tank
Filter
Collector
Collector
[Outdoor] [Room]
Remote
Control
2 Way V/V
(Manual)
Air vent
Floor Heating
Radiator
Convector
Thermostatic V/V
T
s2 Way V/V
(Signal)
Safety V/V
Backup
heater
Unit
Buffer
Tank
Filter
Collector
Collector
[Outdoor] [Room]
s
Cooling: Close
Heating: Open
Remote
Control
2Way V/V
(Manual)
Air vent
Floor Heating
Radiator
Convector
Thermostatic V/V
T
s2 Way V/V
(Signal)
[Outdoor] Backup
heater
s
(A) Cooling
3 Way V/V
direction
3 way valve
(Signal)
Heating
▲
▲
(B)
Unit
3 Way V/V direction
Flow A (Bypass) : Cooling
Flow B (Heater) : Heating
1. When the backup heater is installed in a reversible
system, condensation may occur inside the backup
heater.
2. To provide a bypass for the condensate, install 3way
valve.
NOTICE

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Copyright © 2018 - 2019 LG Electronics Inc.
All rights reserved. Only training and service purposes.
nHow to Wire 3Way Valve For Bypass
18 19 20
L1 L2 N
2WAY VALVE
(A)
3way valve
(NO) (NC) (N)
3WAY VALVE (For Backup heater Bypass)
Follow below procedures Step 1 ~ Step 2.
Step 1. Uncover front cover of the unit.
Step 2. Find terminal block and connect wire as below. (in the unit)
(1) : Flow A means ‘water flow from the unit to Buffer tank . (Cooling)’
(2) : Flow B means ‘water flow from the unit to Backup heater. (Heating)’
Final check
• Flow direction
- Water should not flow into Heater loop (B) in cooling mode.
- If correctly wired, this temperatures should not be approached to 6°C in cooling mode.
• Noise or water pipe vibration while 3way valve operation
- Due to surging effect or cavitation effect, noise or water pipe vibration can be occurred while 3way valve is
operating.
- In that case, check followings :
Is water circuit (both under floor water loop and sanitary water tank loop) fully charged? If not, additional water
charging is required.
Fast valve operation yields noise and vibration. Appropriated valve operating time is 60~90 seconds.
• 3Way valve should be connected together with 2Way valve in terminal block.
• Keep the distance between 3Way valve and backup heater more than 0.5m.
• To prevent reverse flow, It is important to use one way valve(check valve) to Backup heater water outlet.
CAUTION
• When type of 2way valve is NO type, 3way valve should select Flow A (bypass) when electric power is sup-
plied to wire (NO) and wire (N).
• When type of 2way valve is NC type, 3way valve should select Flow A (bypass) when electric power is sup-
plied to wire (NC) and wire (N).
WARNING

237202
237203
237204B
237204A
W4810B
148391
237201
566001
249950
266007
W4810A
W6640B
W6640A
269300
135510
263230

237202
237203
237204B
237204A
W4810B
148391
237201
566001
249950
266007
W4810A
W6640B
W6640A
135510
263230
269300

237202
237203
237204B
237204A
W4810B
148391
237201
566001
249950
266007
W4810A
W6640B
W6640A
269300B
135510
263230
269300A

P/NO : MFL68681907
Copyright © 2018 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.