LG R5TT20F-SA0 Heat Pump Water Heater User Guide

: June 13, 2024
: LG

R5TT20F-SA0 Heat Pump Water Heater

Product Information:

The Heat Pump Water Heater is a 60 Hz appliance that uses R134a
refrigerant. It is designed to provide hot water efficiently and
economically. The product comes in various models with different
specifications and features.

Models Line Up:

Category: Heat Pump Water Heater

Chassis Model Name: R5TT20F-SA0

Nominal Volume: 220 liters (58 gallons)

Nomenclature:

R5TT20F-SA0

R: Heat Pump Water Heater
5: R134a refrigerant
T: Packaged
T2: Inverter Heating Only
0: Water tank capacity (20 liters)
F: Frontier look/color
-: Packaged (No outdoor unit)
S: Frontier Silver
A0: Smart function + Hybrid mode

Specifications:

Volume (Nominal): 220 liters (58 gallons)
Volume (Rated): 197.7 liters (52 gallons)
UEF: 3.75
FHR: 66 kW (249.8 kWh)
FHR (Turbo Mode): 80 kW (302 kWh)
Annual Energy Consumption: Not specified
Power Input: 866 W
Upper Element Wattage (208V / 240V): 3.8 kW / 5.0 kW
Lower Element Wattage (208V / 240V): 3.8 kW / 5.0 kW
Energy Star: Yes
Tax Credit: Not specified
Power Supply: 1,208-240V, 60Hz
Available Voltage Range: 176 ~ 276 V
Air Flow Rate: 6.7 / 4.4 H/M (High/Medium)
RPM: 236.6/155.4 H/M (High/Medium)
Sound Level: Not specified
Pressure: Not specified
Le: Not specified
Turbo/Heat Pump Sound Power Level: Not specified
Net Dimensions (W x H x D): 580 x 1625 x 582 mm (22 53/64 x 63
31/32 x 22 29/32 in)
Shipping Dimensions (W x H x D): 738 x 1775 x 690 mm (29 1/16 x
69 7/8 x 27 11/64 in)
Weight: Net – 1625 kg (63 31/32 lb), Shipping – 580 kg (22
53/64 lb)

Compressor:

Type: Twin Rotary
Motor Type: BLDC (Brushless DC Motor)
Motor Output: 43 W
Full Load Ampere (FLA): 0.22 A
Oil Type / Maker: POE (RB68A) / Sun Oil or Jx Nippon or P VE
(FVC68D) / IDEMITSU
Oil Charge: 220 cc
O.L.P. Name: Not specified
Rated Load Ampere (208V / 240V): 3.3 A / 3.1 A
Manufacturer / Country of Origin: LG Electronics / China

Fan:

Type: Propeller Fan
Motor Type: BLDC (Brushless DC Motor)
Motor Output: Not specified
Full Load Ampere (FLA): Not specified

Heat Exchanger:

Material, Tube / Fin: Copper / Aluminum
Fin Spacing: 21 FPI (Fins Per Inch)
Evaporator: (7 x 3 x 15 x 21 x 390) x 1
Corrosion Protection: PCM Al
Condenser: (8 x 1 x 50000) x 1
Corrosion Protection: Not specified

Operation Range:

Heating: -5 ~ 48.9°C (23 ~ 120°F)

Max Fuse Size:

Not specified

Exterior Color Code:

Not specified

Type Model Motor Type:

Not specified

Material, Tube:

Not specified

Corrosion Protection:

Not specified

Unit:

Gallon(L): 58(220L) (Net), 52(197.7L) (Shipping)
kWh: Not specified
kW: Not specified
dB(A)+3: Not specified

Manufacturer / Country of Origin:

LG Electronics / China

Design Pressure (System):

Not specified

Max Working Pressure (Water Tank):

Not specified

Minimum Circuit Ampacity:

Not specified

Circuit Breaker:

Not specified

Product Usage Instructions:

To use the Heat Pump Water Heater, follow these steps:

Ensure that the power supply is connected to a suitable voltage
range of 1,208-240V, 60Hz.
Make sure the water tank is filled with water.
Set the desired temperature using the controller or smart
function.
Wait for the water heater to heat up the water to the set
temperature.
Enjoy hot water for various household purposes.

Note: Refer to the installation section of the user manual for
detailed instructions on how to install the Heat Pump Water
Heater.

Printed in Sep. 12. 2023

Heat Pump Water Heater – 60 Hz (R134a)
1. Models Line Up 2. Nomenclature 3. Specification 4. Function List 5. Dimensional Drawings 6. Wiring Diagrams 7. Refrigerant Cycle Diagrams 8. Capacity Tables 9. Capacity Coefficient Factor 10. Operation Range 11. Electric Characteristics 12. Sound Levels (Reference Data) 13. Carrying Method 14. Installation 15. Controller

Heat Pump Water Heater – 60 Hz ( R134a)
1. Models Line Up

1 1 –

Note · : No Relation · For Circuit Breaker Rating, please conform to local standards whenever necessary. · Exterior color code is approximate value. · It is difficult to measure air flow rate of sleep because of small values. · Maximum heating capacity is for heating operation without any frost. · Some specifications may be changed without notifications due to our policy of innovation.

R5TT20F-SA0 R5TT20F-SA0
58(220L) 52(197.7L)
3.75 66(249.8) 80(302)
866 3.8 / 5.0 3.8 / 5.0
Yes –
1,208-240V,60Hz 176 ~ 276 6.7 / 4.4 236.6/155.4 1000/700
40
42
580 x 1625 x 582 22 53/64 x 63 31/32 x 22 29/32 738 x 1775 x 690 29 1/16 x 69 7/8 x 27 11/64
1625 63 31/32
580 22 53/64
998 39 19/64
147 5 25/32
147 5 25/32
100 220 118 260 -5 ~ 48.9 23 ~ 120 13.5 Luxury Silver Twin Rotary EST092MBA BLDC POE (RB68A) / Sun Oil or Jx Nippon or P VE (FVC68D) / IDEMITSU 220
3.3 / 3.1 LG Electronics / China Propeller Fan
BLDC 43 0.22
Cu / Al 21 ( 7)
( 7 x 3 x 15 x 21 x 390) x 1
PCM Al
( 8 x 1 x 50000) x 1 –
4

Heat Pump Water Heater – 60 Hz ( R134a)
3. Specifications

Buyer Model Factory Model Design Pressure (System) Max Working Pres sure (Water Tank) Minimum Circuit Ampacity Circuit Breaker
Power Supply Cable
Drain Hose Size
Refrigerant
Defrost Method Anode Foam Insulation T&P Relief Valve Water Cnnection Location Water Connection Size Digital Display Wi-Fi Tank Warranty

Set (Indoor / Outdoor) High Side Low Side
I.D Type Pre Charge Additional Charge Control

Unit
–
–
A A No. AWG mm in. g oz. g/m oz./ft. –
inch –
inch –
year

Note · : No Relation · For Circuit Breaker Rating, please conform to local standards whenever necessary. · Exterior color code is approximate value. · It is difficult to measure air flow rate of sleep because of small values. · Maximum heating capacity is for heating operation without any frost. · Some specifications may be changed without notifications due to our policy of innovation.

R5TT20F-SA0 R5TT20F-SA0 2.0MPa / 290 PSI 0.9MPa / 130.5 PSI
150 PSI (1034 kPa)
30.1 30 3 2.5 10 19, 12.7 3/4, 1/2 R134a 650 23 Electronic Expansion Valve Reverse Cycle Sacrificial 1.6 ~ 2.4 Yes side 3/4 Yes Yes 10

A
C
DE B
5

Heat Pump Water Heater – 60 Hz (R134a)
4. Function List

Category

Function

Air Purifying

Prefilter (Washable / Anti-Bacteria)

Description Capture dust particles over 10m in size and finer bacteria.

Reliability

Self Diagnosis De-ice Control (Defrost) HeatPump

Auto

Turbo

Convenience Vacation

Individual Control
CAC Network Function
Special Function
Kit Others

Schedule Auto Restart Operation
Two Thermistor Control ¹
Overheating Protection
Indoor Unit Display Type Indoor Unit Display Light Wired Remote Controller ² Handheld Wireless Controller General Central Controller (Non LGAP) Network Solution (LGAP) Dry Contact ² PDI (Power Distribution Indicator) ² Outdoor Unit PI 485 ² Wi-Fi ² Water Level Sensor Connection ² Crank Case Heater
Smart Inv erter Monitoring System (SIMs)²
Temperature Control

Self-diagnostic for product protection.
In the heating mode, de-icing of the outdoor heat exchanger automatically.
This mode minimizes power consumption by using only heat pump for heating. This mode provides relatively low power consumption and high recovery. This mode primary uses heat pump for heating. This mode is factory set mode for shipping.
This mode provides the highest recovery. This mode uses heat pump and heating element simultaneously. This feature is recommended when the water heater is not in used for an extended period of time. In this mode, tank temperature will be maintained at about 68°F to minimize energy consumption and prevent the water heater from freezing.
The Custormer can set up the operation time and mode based on their Demand Condition. If power is resupplied after blackout, product restart automatically. If there is a temperature difference between room temperature and desired temperature, you can use this function in other to prevent insufficient cooling and insufficient heating. If there is a temperature difference between room temperature and desired temperature, you can use this function in other to prevent over-heating.
–
Set the brightness of the display on the indoor unit. –
Easily access and control an air conditioner’s functions from anywhere. Detect the water level in drain pan.
Pre-heating the compressor during winter.
Help you to easily monitor, diagnose the air conditioner and get a quick resolution.
Basic cycle control method.

Note · These functions must be applied according to the model. Please refer to the follow ing function list for each model. · ¹ : This function can be operated only w hen the w ired remote controller is connected. The applicability of each function depends on the above table.
· ² : Optional accessories must be purchased separately. If show n as “Embedded”, this function is included in product. · The function Wi-Fi is only compatible w ith 2.4 GHz band. (802.11 b/g/n) · Some specifications may be changed w ithout notifications due to our policy of innovation. · The air conditioner which DRED is available is capable of DRM1,DRM2 and DRM3 and complies with standard AS/NZS 4755.3.1.

6

Heat Pump Water Heater – 60 Hz ( R134a)
5. Dimensional Drawings
R5TT20F-SA0
7

Heat Pump Water Heater – 60 Hz ( R134a)
6. Wiring Diagrams
R5TT20F-SA0
8

Heat Pump Water Heater – 60 Hz (R134a)
7. Refrigerant Cycle Diagrams
577)6$
Compressor Th1
Th4

Heating Defrosting

Heat Exchanger (Condenser)

Th5
Th6 Water Tank

EEV

LOC

Description

Th1

Thermistor for discharge pipe temperature

Th2

Thermistor for evaporating temperature

Th3

Thermistor for indoor air temperature

Th4

Thermistor for suction pipe temperature

Th5

Thermistor for upper water tank temperature

Th6

Thermistor for lower water tank temperature

*EEV : Electronic Expansion Valve.

Th3

Th2

Heat

M

Exchanger

(Evaporator)

PCB Connector CN_TH2 CN_TEMP_AIR CN_TEMP_AIR CN_TH1 CN_TANK_D CN_TANK_U

9

Heat Pump Water Heater – 60 Hz (R134a)
8. Capacity Tables

8.1 Capacity table

COP
Ambient temp. -5
20
48

Initial water tank temp.()
10 20 30 40 50 10 20 30 40 50 10 20 30 40 50

Setting temp.()

Auto Mode

Heatpump Mode

35

40 45 50 55 60 35 40 45 50 55

1.69 1.45 1.25 1.10 0.99 0.93 2.72 2.64 2.51 2.33 2.12

2.57 1.66 1.46 1.31 1.20 1.14 2.57 2.49 2.36 2.19 1.97

2.30 2.17 1.33 1.22 1.16

2.30 2.17 2.00 1.78

1.78 1.56 1.30

1.78 1.56

0.90

1.86 1.79 1.67 1.54 1.40 1.25 4.30 4.10 3.91 3.71 3.50

5.73 2.03 1.91 1.78 1.64 1.49 4.15 3.96 3.76 3.56 3.36

4.79 4.37 2.02 1.88 1.73

3.64 3.44 3.24 3.04

3.56 3.21 1.97

2.74 2.54

2.54

1.95 1.97 1.92 1.80 1.60 1.32 6.00 5.75 5.51 5.30 5.11

10.07 2.21 2.16 2.03 1.83 1.56 5.66 5.41 5.17 4.96 4.77

8.61 7.99 2.07 1.86 1.59

5.09 4.86 4.65 4.45

6.12 5.50 1.42

4.35 4.16

3.22

Turbo Mode

60 35 40 45 50 55 60

1.86 1.69 1.45 1.25 1.10 0.99 0.93

1.71 1.90 1.66 1.46 1.31 1.20 1.14

1.52

2.30 1.48 1.33 1.22 1.16

1.30

1.78 1.04 0.97

1.04

0.90

3.30 1.71 1.64 1.56 1.48 1.40 1.31

3.15 1.79 1.72 1.64 1.56 1.47 1.39

2.83

3.64 1.66 1.58 1.49 1.41

2.33

2.74 1.46 1.37

1.66

4.94 1.79 1.81 1.78 1.71 1.60 1.46

4.60 2.05 2.07 2.04 1.97 1.86 1.72

4.29

5.09 2.31 2.25 2.14 1.99

3.99

4.35 2.42 2.27

3.72

Power Consumption integ. (kWh)

Ambient temp. -5
20
48

Initial water tank temp.()
10 20 30 40 50 10 20 30 40 50 10 20 30 40 50

Setting temp.()

Auto Mode

Heatpump Mode

35

40 45 50 55 60 35 40 45 50 55

3.21 4.62 5.97 7.28 8.55 9.77 1.85 2.30 2.93 3.75 4.75

1.20 2.61 3.97 5.28 6.54 7.76 1.20 1.65 2.28 3.10 4.10

0.79 1.43 3.25 4.52 5.74

0.79 1.43 2.24 3.25

1.19 2.19 3.69

1.19 2.19

1.62

2.31 3.21 4.29 5.53 6.95 8.55 1.10 1.44 1.82 2.26 2.74

0.50 1.36 2.43 3.68 5.10 6.69 0.63 0.97 1.35 1.78 2.27

0.36 0.67 1.64 3.07 4.66

0.45 0.84 1.27 1.76

0.52 0.94 2.45

0.72 1.20

0.78

2.06 2.67 3.51 4.57 5.87 7.39 0.74 0.98 1.24 1.53 1.84

0.25 0.86 1.70 2.77 4.06 5.58 0.43 0.67 0.93 1.22 1.53

0.17 0.33 0.93 2.22 3.74

0.27 0.54 0.82 1.13

0.30 0.53 1.86

0.35 0.66

0.54

Turbo Mode

60 35 40 45 50 55 60

5.93 3.21 4.62 5.97 7.28 8.55 9.77

5.28 1.21 2.61 3.97 5.28 6.54 7.76

4.43

0.79 1.94 3.25 4.52 5.74

3.37

1.19 2.47 3.69

2.11

1.62

3.28 2.39 3.38 4.40 5.46 6.56 7.69

2.81 0.74 1.72 2.75 3.81 4.91 6.04

2.30

0.45 1.09 2.15 3.25 4.39

1.74

0.72 1.59 2.73

1.15

2.17 2.16 3.04 3.90 4.76 5.60 6.43

1.86 0.43 1.31 2.17 3.03 3.87 4.70

1.47

0.27 0.54 1.40 2.24 3.07

1.00

0.35 0.71 1.54

0.45

Recovery Time (hour)

Ambient temp. -5
20
48

Initial water tank temp.()
10 20 30 40 50 10 20 30 40 50 10 20 30 40 50

Setting temp.()

Auto Mode

Heatpump Mode

35

40 45 50 55 60 35 40 45 50 55

3.00 3.47 3.71 3.90 3.44 3.29 4.96 6.67 7.94 9.05 9.61

3.05 3.25 3.49 3.67 3.15 2.95 3.05 4.67 6.03 7.27 7.28

2.36 3.88 3.67 3.01 2.71

2.36 3.88 5.31 5.01

2.42 2.61 2.32

2.42 2.61

0.42

2.77 3.06 3.37 3.67 3.98 4.30 2.56 3.29 4.02 4.80 5.57

2.68 2.70 3.01 3.32 3.63 3.94 1.50 2.20 2.91 3.68 4.44

1.81 3.08 3.12 3.44 3.76

1.04 1.74 2.50 3.28

2.09 3.53 3.53

1.16 1.94

2.50

1.85 2.11 2.34 2.54 2.73 2.91 1.32 1.75 2.28 2.88 3.52

1.60 1.87 2.12 2.35 2.56 2.77 0.80 1.21 1.71 2.27 2.90

1.05 1.76 1.94 2.15 2.36

0.57 1.03 1.56 2.15

1.13 1.85 1.98

0.74 1.30

1.31

Turbo Mode

60 35 40 45 50 55 60

9.75 2.70 3.13 3.37 3.56 3.44 3.29

7.45 2.44 2.89 3.12 3.31 3.15 2.95

5.20

2.36 3.06 3.25 3.01 2.71

2.82

2.42 2.64 2.32

0.42

6.38 1.69 1.95 2.20 2.44 2.68 2.92

5.25 1.33 1.60 1.84 2.09 2.32 2.56

4.09

1.04 1.51 1.76 1.99 2.23

2.75

1.16 1.65 1.89

1.26

4.17 1.15 1.39 1.64 1.90 2.16 2.41

3.54 0.83 1.06 1.32 1.57 1.83 2.08

2.78

0.57 0.99 1.25 1.50 1.75

1.91

0.74 1.19 1.43

0.91

H/P + Heater Operating Heater Only Mode
10

Heat Pump Water Heater – 60 Hz (R134a)
8. Capacity Tables

8.2 Performance Graph

Ambient Temperature

23 24.8 32 41 50 59 68 77 86 95 104 118.4

Recovery Time (hour)

Auto
3.57 3.63 3.89 4.21 4.01 3.81 3.62 3.42 3.23 3.03 2.84 2.52

H/P

Turbo

8.69

3.49

8.37

3.41

7.10

3.07

5.50

2.65

5.19

2.55

4.88

2.46

4.57

2.37

4.26

2.27

3.95

2.18

3.64

2.09

3.33

1.99

2.83

1.85

COP of High Draw

COP of Low Draw

Auto
1.12 1.16 1.30 1.47 1.51 1.55 1.60 1.64 1.68 1.72 1.77 1.83

H/P

Turbo

Auto

2.13

1.14

2.32

2.20

1.16

2.38

2.45

1.23

2.63

2.76

1.33

2.94

3.03

1.38

3.55

3.30

1.43

4.17

3.57

1.49

4.78

3.69

1.51

5.39

3.81

1.53

6.00

3.93

1.56

6.61

4.05

1.58

7.22

5.09

1.79

8.20

H/P

Turbo

2.37

1.49

2.38

1.53

2.44

1.65

2.52

1.81

2.90

2.10

3.29

2.39

3.67

2.67

3.84

2.80

4.01

2.92

4.18

3.05

4.35

3.17

5.83

4.28

Note 1. All capacities are net, evaporator fan motor heat is deducted. 2. Direct interpolation is permissible. Do not extrapolate. 3. Capacities are based on the following conditions :
– Indoor Air Temperature : 70 °F (20.0 °C) DB / 60 °F (15.0 °C) WB

Recovery Time (hour)

10.00
9.00 H/P

water tank temp. 58 125

8.00

7.00

6.00 Auto
5.00

4.00

3.00
2.00 Turbo

1.00

0.00 20 30 40 50 60 70 80 90 100 110 120

Ambient Temperature()

COP

6.00 High Draw water tank temp. 58 125
5.00
4.00

H/P

3.00

2.00

Auto

Turbo
1.00

0.00 20 30 40 50 60 70 80 90 100 110 120
Ambient Temperature()

COP

9.00 Low Draw 8.00 water tank temp. 113 125

Auto

7.00

6.00
H/P
5.00

4.00

Turbo

3.00

2.00

1.00

0.00 20 30 40 50 60 70 80 90 100 110 120
Ambient Temperature()

11

Heat Pump Water Heater – 60 Hz ( R134a)
9. Capacity Coefficient Factor

9.1 Capacity Change Rate (%)

Model Duct Type. R5TT20F-SA0

Diameter COP(%)

Duct Length ( 1m / 3.3ft )

Not Ducted

8″(200)

100.0%

96.7%

6″(150) 92.0%

12

Heat Pump Water Heater – 60 Hz ( R134a)

9. Capacity Coefficient Factor

9.2 Maximum Duct Length

Allowable duct length

L2

L1

Case 1

Case 2

Case 3

Case 4

Case 5

System Static Pressure
1150 rpm P(Pa)
3.6 CMM 55 4.5 CMM 43

Case
Size Remark L1+L2
(m)

Case 1

Case 2

Case 3

Case 4

Case 5

Ø 200 Ø 160 Ø 200 Ø 160 Ø 200 Ø 160 Ø 200 Ø 160 Ø 200 Ø 160 Outlet only No Elbow Elbow x 1 Elbow x 1 Elbow x 2 62 25 55 22 52 19 52 19 49 16 31 12 27 10 24 7 24 7 21 4

NOTE

· Total of static pressure must not exceed 55 Pa.

Static pressure calculation table

Component
Ø160 Ø200 Adaptor

Smooth
PVC Duct (Pa/m)
2 0.8

3.6 CMM

Smooth 90° Duct adapter

PVC Bend (Pa/EA)

(Suc. & Dis. set)
(Pa)

6 2.3

–

5.5 + 5.5

Smooth
PVC Duct (Pa/m)
3.1 1.2

4.5 CMM

Smooth 90° Duct adapter

PVC Bend (Pa/EA)

(Suc. & Dis. set)
(Pa)

9.4 3.7

–

5.8 + 5.8

PVC Duct

PVC 90° Bend

13

Heat Pump Water Heater – 60 Hz (R134a)
10. Operation Range
R5TT20F-SA0
14

Heat Pump Water Heater – 60 Hz (R134a)
11. Electric Characteristics

R5TT20F-SA0

Model Indoor Unit
R5TT20F-SA0

Unit

Type Hz Voltage Voltage Range

Inverter 60 208 / 240

Min : 187 Max : 276

Power MCA MOP
30.1 30.0

Compressor

MSC

RLA Cool Heat

–

3.3

FM

W

FLA

43

0.22

Note 1. Voltage range
Voltage supplied to the unit terminals should be within the minimum and maximum range. 2. Maximum allowable voltage unbalance between phase is 2 %. 3. Select wire spec. based on the larger value of MCA. 4. RLA is measured during each individual compressor test condition. 5. OFM is measured as the outdoor unit test condition. 6. Recommended circuit breaker is ELCB. (Earth Leakage Circuit Breaker)

MCA : Minimum Circuit Amperes (A) MOP : Maximum Rating Over Current Protective Device (A) MSC : Maximum Starting Current (A) RLA : Rated Load Amperes (A) FM : Fan Motor W : Fan Motor Rated Output (W) FLA : Full Load Amperes (A)

NSF372 will be certified by CSA unitl May 2021
15

Heat Pump Water Heater – 60 Hz (R134a)
12. Sound Levels (Reference Data)

12.1 Sound Pressure Level

Model R5TT20F-SA0

Heating

Auto Turbo/HeatPump

40

42

Note – Sound measured at 1 m away from the unit. – Data is valid at free field condition. – Data is valid at nominal operation condition. – Reference acoustic pressure 0dB=20Pa. – Sound level will vary depending on a range of factors such as the construction(acoustic absorption coefficient) of particular room in which the equipment is
installed. – The operating conditions are assumed to be standard. – Sound pressure level is measured on the rated condition in the anechoic rooms by ISO 3745 standard. – Sound level is measured in an anechoic room and may be different according to the test condition or equipment.

16

Heat Pump Water Heater – 60 Hz (R134a)
12. Sound Levels (Reference Data)

R5TT20F-SA0

Heating

80

70

Turbo/HeatPump Auto

Octave Band Sound Pressure Level ( 0 dB = 20Pa )

NC-65 60
NC-60
NC-55 50
NC-50
NC-45 40
NC-40
NC-35 30
NC-30

20

NC-25

Approximate Hearing Threshold

NC-20

NC-15

10

63

125

250

500 1000 2000 4000 8000

Octave Band Center Frequency (Hz)

17

Heat Pump Water Heater – 60 Hz (R134a)
13. Carrying Method
· Moving or installation of the appliance requires two or more people. · Make sure you both have a good grip before lifting. · Use an appliance dolly with strap to move the water heater.
18

Heat Pump Water Heater – 60 Hz (R134a)
14. Installation
SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE
Your safety and the safety of others are very important. We have provided many important safety messages in this manual and on your appliance. Always read and follow all safety messages.
! This is the safety alert symbol.
This symbol alerts you to potential hazards that can kill or injure you and others.
All safety messages will follow the safety alert symbol and either the word DANGER, WARNING or CAUTION. These words mean:
! CAUTION
You may be slightly injured or cause damage to the product if you do not follow instructions.
! WARNING
You may be killed or seriously injured if you do not follow instructions.
! DANGER
This indicates that the failure to follow the instructions will cause serious injury or death.
All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what may happen if the instructions are not followed.
! WARNING
To reduce the risk of explosion, fire, death, electric shock, injury or scalding to persons, instructions in this manual must be followed. Be sure to fully understand the user’s manual before you install and operate this appliance. If you have any difficultly in understanding or following the instructions in this manual, or have any questions, contact an authorized service center or the local electric utility.
19

Heat Pump Water Heater – 60 Hz (R134a)
14. Installation
Safety Precaution
Water Temperature Setting
! DANGER
Water temperature above 125°F can cause severe burns instantly or death from scalding. Be sure to read and follow the warnings on the label pictured below. This label is also located on the front of the water heater.

For determining the proper water temperature for your home, refer to the chart below.

Temperature
120°F(49°C) 125°F(52°C) 130°F(54°C) 135°F(57°C) 140°F(60°C) 145°F(63°C) 150°F(65°C) 155°F(68°C)

Time to Produce a Serious Burn
More than 5 minutes 1 ½ to 2 minutes About 30 seconds About 10 seconds
Less than 5 seconds Less than 3 seconds About 1 ½ seconds
About 1 second

NOTE
·To reduce point of use water temperature, Thermostatic Mixing Valves are recommended. These valves automatically mix hot and cold water in branch water lines. It is recommended to use a mixing valve complying with the Standard for Temperature Actuated Mixing Valves for Hot Water Distribution Systems, ASSE 1017. Contact a qualified person or local plumbing authority for more information.

! DANGER
Households with the elderly, children, or people with disabilities may require a 120°F or lower thermostat setting to prevent contact with “HOT” water.

20

Heat Pump Water Heater – 60 Hz (R134a)
14. Installation
! DANGER
Higher water temperature increases the potential for Hot Water SCALDS Water temperature in the heater is regulated by the buttons on display. The water temperature of this water heater is factory set to 120°F to comply with safety regulations. For information about adjusting the water temperature, refer to the operation section in this manual.
For Use in The State of California
The state of California requires that residential water heaters must be braced, anchored or strapped to avoid falling or horizontal displacement during an earthquake. Contact local utilities for code requirements in your area.
Local Installation Regulations
This appliance must be installed accordance with instructions of this manual, local codes, utility codes, utility company requirements or, if there is no local codes, the latest edition of the National Electrical Code.
21

Heat Pump Water Heater – 60 Hz (R134a)
14. Installation
Important Safety Instructions
! WARNING
To reduce the risk of explosion, fire, death, electric shock, scalding or injury to persons when using this product, follow basic precautions, including the following:
Children in the Household: This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.
INSTALLATION · Be sure your appliance is properly installed in compliance with local codes and the provided installation instructions. · Do not replace any part of your water heater and use only original accessories and spare part unless it is specifically recommended in this manual. · Do not turn on the electrical power to water heater unless the tank is completely full of water. · Never attempt to operate this appliance if it is damaged, malfunctioning, partially disassembled, or has missing or broken parts. · When the product is soaked (flooded or submerged) in water, contact an Authorized Service Center for repair before using it again. · To reduce the risk of severe injury or death, follow all installation instructions. · Moving or installation of the appliance requires two or more people. · Turn off the power by opening the circuit breaker or removing the fuses before installing. · Even if the water heater thermostat is set to relatively low, hot water has the potential for scalding. To reduce the risk of scalding, thermostatic mixing valves are recommended. · Keep packing materials out of the reach of children. Packaging material can be dangerous for children. There is a risk of suffocation. · Destroy the carton, plastic bag, and other packing materials after the appliance is unpacked.
Children might use them for play. Cartons covered with rugs, bedspreads, or plastic sheets can become airtight chambers. · Connect to a properly rated, protected, and sized power circuit to avoid electrical overload. · This appliance must be positioned near to an electrical power supply. · Do not install the water heater on an unstable surface or in a place where there is danger of it falling. · Contact an authorized service center when installing or relocating water heater. · Do not install the water heater in a place where flammable liquids or gases such as gasoline propane, paint thinner, etc., are stored. · This appliance must be properly grounded to minimize risk of electric shock · The information contained in the manual is intended for use by a qualified service technicia who is familiar with the safety procedures and equipped with the proper tools and test instruments.
22

Heat Pump Water Heater – 60 Hz (R134a)
14. Installation
· Install the panel and the cover of the control box safely. · Do not touch heat exchanger fins with your bare hands. Otherwise you may get a cut in you
hands. · Do not input air or gas into the system except with the specific refrigerant.
OPERATION · Read all instructions before using the appliance and save these instructions. · Use this appliance only for its intended purpose. · If the water heater has been subjected to fire, flood or physical damage, disconnect all
power to water heater immediately, and DO NOT operate it again until it has been inspected by a qualified person. · Do not turn on the water heater unless the tank is completely full of water. · Do not turn on the water heater if cold water supply shut-off valve is closed. · Feel water before bathing or showering. · Even at 120°F, hot water can scald. · Do not block the inlet or outlet of air floor. · Never touch, operate, or repair the water heater with wet hands. · Do not leave flammable substances such as gasoline, benzene, or thinner near the water heater. · Cut off the power supply if there is any noise, smell, or smoke coming from the water heater. · Make sure that the power cable is neither dirt , loose, nor broken. · Do not place any objects on the power cable. · Do not modify or extend the power cable. Scratches or peeling insulation on the power cable may result in fire or electric shock, and should be replaced. · If the supply cord is damaged, it must be replaced by the manufacturer or its service agents or similarly qualified person in order to avoid a hazard. · Do not expose people, animals, or plants to the cold wind from the water heater for extended periods of time.
MAINTENANCE · Do not repair or replace any part of the appliance. All repairs and servicing must be performed
by qualified service personnel unless specifically recommended in this owner’s manual. Use only authorized factory parts. · Disconnect this appliance from the power supply before cleaning and attempting any user maintenance. · Before draining water heater, turn off the power to product. · Do not turn on the electrical power to the water heater unless the tank is completely full of water.
23

Heat Pump Water Heater – 60 Hz (R134a)
14. Installation
! CAUTION
To reduce the risk of minor injury to persons, malfunction, or damage to the product or property when using this product, follow basic precautions, including the following:
INSTALLATION · Install the product on a firm and level floor. · Do not install the water heater in a place where leakage of the tank or connections will result in
damage to the area adjacent to it or to lower floors of the structure. Where such areas cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under the water heater. · Install the water heater in a place where the noise from the water heater will not inconvenience the neighbors. · Install the drain hose properly for the smooth drainage of water condensation. · Be sure to check if there is a refrigerant leak after installing or repairing the water heater. ·To reduce the risk of excessive pressures and temperatures in this water heater, install temperature and pressure protective equipment required by local codes and no less than a combination temperature and pressure relief valve certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials, as meeting the requirements for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22. This valve must be marked with a maximum set pressure not to exceed the marked maximum working pressure of the water heater. Install the valve into an opening provided and marked for this purpose in the water heater, and orient it or provide tubing so that any discharge from the valve exits only within 6 inches above, or at any distance below, the structural floor, and does not contact any live electrical part. The discharge opening must not be blocked or reduced in size under any circumstances.
OPERATION · Do not place objects on top of the appliance. · Do not use this appliance if any part have been under water. Immediately contact an
Authorized Service Center for replace flooded water heater. Do not attempt to repair the unit. It must be replaced. · Turn off the power and water supply to water heater and drain water heater if the appliance is to be left for an extended period of time, such as during vacations. · Hydrogen gas is produced in a hot water system served by this heater that has not been used for a long period of time (2 weeks or more). HYDROGEN GAS IS EXTREMELY FLAMMABLE. To reduce the risk of injury under these conditions, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system. When hydrogen is present, there will probably be an unusual sound such as air escaping through the pipe as the water begins to flow. There should be no smoking or open flame near the faucet at the time it is open.
SAVE THESE INSTRUCTIONS
24

Heat Pump Water Heater – 60 Hz (R134a)
14. Installation
INSTALLATION
Parts and Functions

2

1

3

4

5 18

6

17

7

8

16

15

14

9 10 11

12 13

1 Top cover 2 Air intake vents 3 Junction box 4 Air filter 5 Front panel 6 Display décor / Control panel 7 ECO 8 Upper element cover 9 Front décor 10 Lower element cover 11 Heating element 12 Opening for drain valve 13 Water inlet 14 Opening for T&P relief valve 15 Water outlet 16 Condensate drain 17 Rear panel 18 Air outlet Vents

25

Recommended Accessories: Figure

Name

Drain pan

Pressure reducing valve

Dielectric Union

Figure

Name Thermal expansion tank
Thermostatic mixing valve

If copper piping is used, The dielectric unions(field supply) must be installed at the water connections.

Heat Pump Water Heater – 60 Hz (R134a)

14. Installation

Select the best Location

Minimum Clearances

NOTE
· Installation in a confined space without proper ventilation will lead to higher power consumption.
· Auxiliary drain pan MUST be installed in compliance with local codes. Drain pan kits are available from the store where the water heater purchased, or any water heater distributor. Drain pan should not obstruct cold water inlet or drain valve.

Minimum room size: 700 ft3
1.5ft(45cm)

0.5ft (15cm)

1.5ft(45cm)

– Select space where has enough space for periodic servicing. The air filter, covers, and front panels can be removed to permit inspection and servicing.
– Take the weight of the water heater into account and select a place where the floor is strong enough to support the weight of full water heater.
– The water heater and water lines should be protected from freezing and high corrosive elements. Do not install water heater in outdoor or unprotected areas.
– Install the water heater close to the area of greatest heater water demand and the center of plumbing system. Long un-insulated hot water lines can waste energy.
– Insufficient air exchange will result in increased energy consumption level.
– The installation site must be over 34 °F(1 °C).

0.5ft (15cm)

0.5ft(15cm) 1.5ft(45cm)

NOTE
· For future service, a minimum 3 feet clearanc between any object and the left, right and back side is recommended.

28

Heat Pump Water Heater – 60 Hz (R134a)

14. Installation

Unpacking and Removing Shipping Bolts
NOTE
· Accessories (drain valve and T&P relief valve) are attached on pallet. Keep it for installation.
Unpack all shipping materials from the water heater for proper operation and inspect it for shipping damage.
1 Remove carton and shipping materials. 2 Remove the screws from the shipping
brackets.

Thermal Expansion
Determine if a check valve is present on the inlet water line. Check with your local water utility. A check valve located in cold water inlet line will create a “closed water system”. As water is heated, it creates an increase in pressure within the water system because the increased volume of water doesn’t have a place to go.
Referred to as “thermal expansion”, the rapid pressure increase can quickly reach the safety setting of the relief valve. This will cause the relief valve to open during each heating cycle. We recommend installing an expansion tank to control thermal expansion.
Connect the thermal expansion tank to the cold water supply line (see Installation Instructions). For additional information, contact installing contractor, plumbing inspector, or water supplier.

Accessories
3 Pull out the shipping brackets.

4 Slightly tip the water heater and carefully roll the water heater off the pallet.

29

Heat Pump Water Heater – 60 Hz (R134a)

14. Installation

Installing Drain Pan

Installing Drain Valve

NOTE
· Most codes require placing the water heater on a suitable drain pan piped to an adequate drain.

Use drain valve included in packing.
1 Apply Teflon tape on the NPT end to prevent leaking.

The drain pan helps to prevent property damage which may occur from condensation or leaks in the piping connections or tank.

1 Install a suitable drain pan piped to an adequate drain.

2 Place water heater on drain pan.

2 Install the drain valve in the opening marked “Drain Valve”.

3 Ensure the water heater is horizontal using a spirit level.

NOTE
· Drain valve and T&P relief valve is included in packing box of the water heater. They must be installed in the opening provided for this purpose.
30

Heat Pump Water Heater – 60 Hz (R134a)
14. Installation Installing T&P Relief Valve
Use T&P relief valve included in packing.
1 Apply Teflon tape on the NPT end to prevent leaking.

– The end of the discharge pipe should not be threaded or concealed and should be protected from freezing.
– Do not insert or install any type of valve, restriction, or reducer coupling in the discharge pipe.

1 Apply Teflon tape on the NPT end to prevent leaking.

2 Install the T&P relief valve in the opening marked T&P relief valve.
Connecting T&P Relief Valve Discharge Pipe
! WARNING
The pressure rating of the relief valve must not exceed 150PSI, the maximum working pressure of the water heater as specified on the data plate.

2 Attach the discharge pipe to outlet of the T&P relief valve. The discharge pipe must pitch downward from the valve to allow complete drainage of both T&P relief valve and discharge pipe.

! WARNING
DO NOT connect any valve or other restriction to the T&P plumbing. DO NOT connect the T&P plumbing to the condensate plumbing. It must be directly piped to an adequate open drain.
Install T&P Relief Valve discharge pipe according to local codes and the following instructions.

3 The end of the discharge pipe must stop no more than six inches above the floor drain or outside.

– The inside diameter of the discharge pipe must be at least 3/4″.
– The discharge pipe must be approved for hot water distribution and withstand 210°F without distortion.
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Max. 6″

Heat Pump Water Heater – 60 Hz (R134a)

14. Installation

Installing Condensate Drain Lines

2 Attach elbow with 3/4″ slip &3/4″NPT to the primary drain connection.

NOTE
· When making drain fitting connections to the drain tubing, DO NOT overtighten. Overtightening fittings could crack or damage the condensate drain pan.
· Condensate from this unit is not acidic.

The condensate drain lines and connections to the drain piping must meet state and local codes.
Do not reduce the drain line size to less than the condensate connection size provided.
Ensure that the condensate drain lines maintain a downward slope for proper drainage.
The drain line should be insulated to prevent condensation from forming on the outside of the drain line.
Do not allow condensate to drain into water heater drain pan.

3 Using an approved sealant, insert the PVC pipe into the female end. Condensate drain must be piped to an adequate drain.

If no floor drain is available or the drain is above the level of the condensate line, then a common condensate pump with a capacity no less than 2 gallon per day must be installed.

1 Apply Teflon tape on the NPT end to prevent leaking.

4 Using 1/2″ PVC piping, a elbow with 1/2″ slip & 1/2″ NPT, and an approved sealant, attach the elbow to secondary drain connection and insert the PVC pipe into the female end.

32

If cooper piping used, The water heater should always be connected dielectric connections (field supply) to avoid corrosion caused by electric currents common in copper water pipes.
For ease of disconnecting the water heater for service or replacement, the installation of unions is recommended on the water connections.

Heat Pump Water Heater – 60 Hz (R134a)
14. Installation
Making Electrical Connections
! WARNING
Disconnect all power before working on any electrical connections.
NOTE
· All wiring must conform to local codes or National Electrical Code ANSI/NFPA 70.
A separate branch circuit with copper conductors, overcurrent protective device and suitable disconnecting means must be provided by a qualified electrician. The voltage requirements and wattage load for the water heater are specified on the data plate on the front of the water heater.

NOTE
· Use flexible conduit only. · Use crimp type connector for wiring. · The ground wire should be longer than th
common wires.
10±3mm
GN/YL 20mm
1 Make certain the electrical power is turned off.
2 Remove junction box cover from the unit by loosening the 2 screws.

Ensure that the fusing or circuit breaker is proper size for this water heater
(Recommended 30 amp breaker).

The branch circuit wiring should include either:
1 Metallic conduit or metallic sheathed cable approved for use as a grounding conductor and installed with fittings approved for the purpose.

3 Connect the ground to the green ground wire, and the home’s two power wires to the water heater’s two power wires.

2 Non-metallic sheathed cable, metallic conduit or metallic sheathed cable not approved for use as a ground conductor shall include a separate conductor for grounding. It should be attached to the ground terminals of the water heater and the electrical distribution box.

34

Heat Pump Water Heater – 60 Hz (R134a)
14. Installation
Safety Controls
! CAUTION
You must have a qualified person investigate the cause of the high temperature condition and take corrective action before placing the water heater in service again.

Insulation Blanket Kits
External insulation blanket, available to the general public, for water heater is not necessary.
The manufacturer’s warranty does not cover any damage or failure caused by installing or using any type of unauthorized energy-saving or other devices.

There is temperature limiting control(ECO) that is located above the upper heating element. If the water temperature becomes excessively high, the temperature limiting control(ECO) shuts off the power to the heating elements. Once the control opens, it must be reset manually.
To reset temperature limiting control(ECO):
1 Turn off the power by opening the circuit breaker or removing the fuses.
2 Remove the front décor and upper element cover.
3 Press the red ECO RESET button.

The manufacturer is not responsible for any injury or loss resulting from the use of such unauthorized devices.
! CAUTION
If local codes require application of any external insulation blanket kit to water heater, it will require careful attention so as not to restrict the proper function and operation of this appliance: – DO NOT block the air openings of the
water heater. – DO NOT cover or attempt to relocated the
information or warning labels attached to the water heater. – DO NOT cover the control panel, T&P relief valve, drain valve, and junction box. – Inspect the blanket frequently.

35

Water connections tight and free of leakage but DO NOT overtighten. If cooper piping used, connect the dielectric unions(field supply) to prevent corrosion. Flexible water connections recommended.

Heat Pump Water Heater – 60 Hz ( R134a)
15. Controller Using Basic Control
DISPLAY SCREEN
1 Button
2
–
1

2
Display Screen

Description
To select the heat pump mode.

To select the auto mode.

To select the turbo mode.

To select the Vacation mode.

Set schedule mode only in LG ThinQ application.

–

To set the desired water temperature.

To adjust the desired water temperature.

To enable the Wi-Fi pairing.

To reset the filter alarm.

To change unit between °F and °C.
To display the current water temperature for 5 seconds.

37

Heat Pump Water Heater – 60 Hz ( R134a)
15. Controller

Water Temperature Adjustment
! DANGER
Higher water temperature increases the potential for Hot Water SCALDS.

The water temperature will be maintained according to the setting temperature on Display and can be adjusted from 95°F to 140°F.

1 Press or temperature.

button to select the water

2 Press Set button to finish.

Operation Mode
· Press Mode button repeatedly to select the operating mode.
The active mode is displayed on the display screen.
HEAT PUMP MODE This mode minimizes power consumption by using only heat pump for heating, but has low recovery.

VACATION MODE This feature is recommended when the water heater is not in used for an extended period of time. In this mode, tank temperature will be maintained at about 68 °F(20 °C) to minimize energy consumption and prevent the water heater from freezing. The vacation duration can be set or modified between 1 and 90 days via LG ThinQ app.
! CAUTION
Hydrogen gas can be produced in a hot water system when it is no used for a long period (generally two weeks or more). HYDROGEN GAS IS EXTREMELY FLAMMABLE.
Reset the Air Filter Alarm
The device will display alarm ( ) reminding you to check and clean the air filter periodically.
· Press and hold Set button about 3 seconds to reset the alarm.
Change Temperature Unit
Temperature unit display on Screen can be set to Fahrenheit or Celsius
· Press and hold button about 3 seconds to change temperature unit.

AUTO MODE This mode is factory set mode for shipping. This mode provides relatively low power consumption and high recovery. This mode primary uses heat pump for heating. Heating elements will provide supplementary heating, if demand is more than the heat pump can keep up by itself.
TURBO MODE This mode provides the highest recovery. This mode uses heat pump and heating element simultaneously.

Current water Temperature
· Press and hold button about 3 seconds
Display will show current water temperature of the tank for 5 seconds.
Wi-Fi PAIRING FUNCTION
Once it is connected to the internet through a home Wi-Fi network, you can control the appliance remotely with the application for the smart phone. See “SMART FUNCTION” section for details.

· Press and hold Mode button about 3 seconds. is displayed on the display screen.
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