LG APHWC501D(R5TT50F-SB1) Heat Pump Water Heater Instruction Manual

: September 16, 2024
: LG

Table of Contents

LG APHWC501D(R5TT50F-SB1) Heat Pump Water Heater
Product Information
FAQ
SAFETY PRECAUTIONS
NOMENCLATURE
PRODUCT SPECIFICATIONS
PIPING DIAGRAM
WIRING DIAGRAM
EXPLODED VIEW
DISASSEMBLY
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LG APHWC501D(R5TT50F-SB1) Heat Pump Water Heater

Product Information

Specifications

Model Numbers: APHWC501D(R5TT50F-SB1), APHWC801D(R5TT80F-SB1), APHWC501L(R5TT50F-SC1), APHWC801L(R5TT80F-SC1)
P/NO.: MFL71409307_Rev01. 08022024

FAQ

Frequently Asked Questions

Q: What should I do if there is a refrigerant gas leak?
- A: In case of a refrigerant gas leak, perform ventilation immediately to prevent any health hazards. Avoid contact with the gas and seek professional assistance for repair.
Q: How often should I check the water heater for maintenance?
- A: It is recommended to perform regular maintenance checks at least once every six months to ensure optimal performance and safety of the unit.

CAUTION

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

MODEL: APHWC501D(R5TT50F-SB1), APHWC801D(R5TT80F-SB1), APHWC501L(R5TT50F- SC1), APHWC801L(R5TT80F-SC1)

Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.

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 to properties only.

Meanings of symbols used in this manual are as shown below

| Be sure not to do.
---|---
| Be sure to follow the instruction.
| Dangerous Voltage.

Cautions in Repair

WARNING

Do not turn on the breaker or power under condition that front panel, rear panel, top cover, or control box cover is removed or opened. Otherwise, it may cause fire, electric shock, explosion or death.
Be sure to disconnect the power to unit before disassembling the equipment for a repair.Internal components and circuit boards are at main potential when the equipment is connected to the power. This high voltage is extremely dangerous and may cause death or severe injury if an individual comes into contact with it
Do not touch the discharging refrigerant gas during the repair work.
The refrigerant gas can cause frostbite.
Release the refrigerant gas completely at a well-ventilated place first.
Otherwise, when the pipe is disconnected, refrigerant gas or refrigerating machine oil discharges and it can cause injury.
When the refrigerant gas leaks during work, perform ventilation. If therefrigerant gas comes in contact with a fire, poisonous gas generates. A case of leakage of the refrigerant and the closed room full with gas is dangerous because a shortage of oxygen occurs. Be sure to perform ventilation.
When removing the front panel or cabinet, execute short-circuit and discharge between high voltage capacitor terminals. If discharge is not executed, an electric shock is caused by high voltage resulting in a death or injury.
Do not use a defective or underrated circuit breaker. Use the correctly rated breaker and fuse. Otherwise, there is a risk of fire or electric shock.
Install the panel and the cover of control box securely. Otherwise there is risk of fire or electric shock due to dust, water etc.
Wiring connections must be secured tightly and the cable should be routed properly so that there is no force pulling the cable from the connection terminals. Improper or loose connections can cause heat generation or fire.
Do not touch, operate, or repair the product with wet hands. Otherwise there is risk of electric shock or fire.

CAUTION

Do not turn on the breaker when the front panel and cabinet are removed.
Be sure to ground the water heater with an earthing conductor connected to the earthing terminal.
Conduct repair works after checking that the refrigerating cycle section has cooled down sufficiently. Otherwise, working on the unit, the hot refrigerating cycle section can cause burns.
Do not tilt the unit while removing panels. Otherwise, the water inside the unit can spill and wet floor.
Do not use the welder in a well-ventilated place. Using the welder in an enclosed room can cause oxygen deficiency.
Be sure to turn off power switch before connecting or disconnecting connector, or parts may be damaged.

Inspections after Repair

WARNING

Check to see if the power cable is dirty or loose. If the cable is dusty or loose it can cause an electrical shock or fire.
Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances. Otherwise, it can cause an electrical shock, excessive heat generation or fire.
Do not insert hands or other objects through the air inlet or outlet while the product is operating. There are sharp and moving parts that could cause personal injury.
Do not block the inlet or outlet of air flow. It may cause product failure.

CAUTION

Check to see if the parts are mounted correctly and wires are connected.
Improper installation and connections can cause an electric shock or an injury.
Check whether the installation platform or frame has corroded. Corroded installation platform or frame can cause the unit to fall, resulting in injury.
Be sure to check whether the earth wire is correctly connected.
After the work has finished, be sure to do an insulation test to check whether the resistance is 2[Mohm] or more between the charge section and the non-charge metal section (Earth position). If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.
Check the drainage of the indoor unit after the repair. If drainage is faulty the water may enter the room and wet floor.

NOMENCLATURE

Factory Model Name

Model	No.
1	2
Water Heater	R

Buyer Model Name

Refrigerant	Series	No
1	2	3
R134A	1	A

NOMENCLATURE

No.	Signification
1, 2	Heat Pump Water Heater for R134a
3	Classification

– T : Packaged

4| Compressor Type

– T : Inverter Heating Only

5,6| Water Tank Capacity

– e.g. 50gal → “50”

7| Water Tank Capacity

– F : Frontier

8| Outdoor Unit Platform

– “-” : Packaged(No Outdoor Unit)

9| Look/Color

– S : Frontier Silver

10

| Function

– A : Smart Function + Hybrid Mode

– B : Demand Response function

– C : DR & Water leak detection function

11| Serial No.

– LG Model Development Serial No.

No.	Signification
1	Refrigerant

– A: R134a

2| Component

– P : Packaged

3| Product Category

– H: Heating

4| Product Type

– W : Tank Water

5| Product Grade

– C : Standard Efficiency

6, 7| Nominal Capacity

– e.g. 50gal → “50”

8| Generation

9

| Features

– M : Mid Temp. Water

– D : Demand Response function

– L : DR & Water leak detection function

PRODUCT SPECIFICATIONS

Model	APHWC501D	APHWC501L	APHWC801D	APHWC801L

Capacity

| ****

Volume(Norminal)

| Gal| 58| 80
L| 220| 303

Volume(Rated)

| Gal| 53| 72
L| 201| 273
UEF(Draw Pattern Medium)| –| –| –
UEF(Draw Pattern High)| –| 3.93| 3.90
FHR| Gal| 76| 94
Annual Energy Consumption| kWh| 1262| 1272

Power Input

| Upper Element Wattage(208V / 240V)| kW| 3.8 / 5.0| 3.8 / 5.0
Lower Element Wattage(208V / 240V)| kW| 3.8 / 5.0| 3.8 / 5.0
Energy Star| –| Yes| Yes
Power Supply| Ø, V, Hz| 1Φ,208/240V,60Hz| 1Φ,208/240V,60Hz
Available Voltage Range| V| 176~276| 176~276
Air Flow Rate| Rated| CFM| 155.4| 155.4

Sound Pressure Level

| Auto| dB(A)| 42| 42
Turbo/Heat Pump| dB(A)| 45| 45

Dimensions

| Net(W x H x D)| in.| 22-27/32 x 63-31/32 x 22-29/32| 22-27/32 x 79-1/16 x 22-29/32
Shipping(W x H x D)| in.| 29-1/16 x 69-7/8 x 27-5/32| 29-1/16 x 84-31/32 x 27-5/32

Weight

| Net| lb.| 225| 267
Shipping| lb.| 265| 309
Operation Range| Heating| °F DB| 23 ~ 120| 23 ~ 120
Ex terior Color| –| Lux ury Silver| Lux ury Silver

Compressor

Oil Type

| ****

–

| POE PVE| POE PVE
Oil Charge| cc| 220| 220
Rated Load Ampere(208V / 240V)| A| 3.3 / 3.1| 3.3 / 3.1

Fan

| Type| –| Propeller Fan| Propeller Fan
---|---|---|---|---
Motor Type| –| BLDC| BLDC
Motor Output| –| 43| 43
Full Load Ampere(FLA)| –| 0.22| 0.22

Heat Ex changer(Evaporator)

| Quantity| –| 1| 1
Rows| –| 3| 3
Columns| –| 15| 15
FPI| –| 21| 21

Design Pressure(System)

| High Side| psi| 290| 290
Low Side| psi| 130.5| 130.5
Max Working Pressure(Water Tank)| psi| 150| 150
Minimum Circuit Ampacity| A| 30| 30
Maxium Circuit Breaker| Heat Pump & Heater| A| 30| 30
Wiring Connections| Power Supply Cable(included Earth)| AWG x cores| 10 x 3C| 10 x 3C
Drain Hose Size| I.D| in.| 3/4, 1/2| 3/4, 1/2

Refrigerant

| Type| –| R134a| R134a
Pre Charge| oz.| 23| 26
Additional Charge| oz./ft.| –| –
Control| –| Electronic Ex pansion Valve| Electronic Ex pansion Valve
Defrost Method| –| Reverse Cycle| Reverse Cycle
Anode| –| Sacrificial| Sacrificial
Foam Insulation| inch| 1.6 ~ 2.4| 1.6 ~ 2.4
T&P Relief Valve| –| Yes| Yes
Water Connection Location| –| Side| Side
Water Connection Size| inch| 3/4| 3/4
Digital Display| –| Yes| Yes
Wi-Fi| –| Yes| Yes
Bluetooth| –| Yes| Yes
Eco Port CTA-2045| –| Yes| Yes
Water Leak Detection Function| –| No| Yes| No| Yes

PIPING DIAGRAM

LOC	Description	PCB Connector
Th1	Thermistor for discharge pipe temperature	CN_DISCHARGE
Th2	Thermistor for evaporating temperature	CN_TEMP_AIR
Th3	Thermistor for indoor air temperature	CN_TEMP_AIR
Th4	Thermistor for suction pipe temperature	CN_TH1
Th5	Thermistor for upper water tank temperature	CN_TANK_U
Th6	Thermistor for lower water tank temperature	CN_TANK_D