LG PRHR063A INSTALLATION MANUAL

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INSTALLATION MANUAL

AIR

CONDITIONER

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.

PRHR083A/PRHR063A/PRHR043A/PRHR033A/PRHR023A (Heat Recovery Unit)

Original instruction

http://www.lghvac.com

MFL32987321

www.lg.com

Rev.00_052418

Copyright © 2018 LG Electronics Inc. All Rights Reserved.

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2 TIPS FOR SAVING ENERGY

TIPS FOR SAVING ENERGY

Here are some tips that will help you minimize power consumption when you use the air conditioner. You can use your air conditioner more efficiently by referring to the instructions below:

•Do not cool excessively indoors. This may consume more electricity.

•Block sunlight with blinds or curtains while you are operating the air conditioner.

•Keep doors or windows closed tightly while you are operating the air conditioner.

•Adjust the direction of the air flow vertically or horizontally to circulate indoor air.

•Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the air flow or weaken the cooling / dehumidifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes. Write the model number and the serial number here:

Model number :

Serial number :

You can find them on a label on the side of each unit.

Dealer’s name :

Date of purchase :

IMPORTANT SAFETY INSTRUCTIONS 3

IMPORTANT SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product

! WARNING

It can result in serious injury or death when the directions are ignored

! CAUTION

It can result in minor injury or product damage when the directions are ignored

! WARNING

•Installation or repairs made by unqualified persons can result in hazards to you and others.

•The information contained in the manual is intended for use by a qualified service contractor familiar with safety procedures and equipped with the proper tools and test instruments.

•Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death.

! WARNING

•Have all electric work done by a licensed electrician according to "Electric Facility Engineering Standard" and "Interior Wire Regulations" and the instructions given in this manual and always use a special circuit.

-If the power source capacity is inadequate or electric work is performed improperly, electric shock or fire may result.

•Ask the dealer or an authorized contractor to install the HR unit.

-Improper installation by the user may result in water leakage, electric shock, or fire.

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	4	IMPORTANT SAFETY INSTRUCTIONS
<![if ! IE]> <![endif]>ENGLISH	• Always ground the product.
	- There is risk of fire or electric shock.
	• Make the connections securely so that the outside force of
	the cable may not be applied to the terminals.
	- Inadequate connection and fastening may generate heat and
		cause a fire.
	• For re-installation of the installed product, always contact a
	dealer or an Authorized Service Center.
	- There is risk of fire, electric shock, explosion, or injury.
	• Do not install, remove, or re-install the unit by yourself
	(customer).
	- There is risk of fire, electric shock, explosion, or injury.
	- All work should be performed by a qualified, licensed
		contractor.
	• Do not store or use flammable gas or combustibles near the
	HR Unit.
	- There is risk of fire or failure of product.
	• Use a properly rated breaker or fuse.
	- There is risk of fire or electric shock.
	• Do not damage or use an unspecified power cord.
	- There is risk of fire, electric shock, explosion, or injury.
	• Do not touch the power switch with wet hands.
	- There is risk of fire, electric shock, explosion, or injury.
	• Securely install the cover of control box and the panel.
	- If the cover and panel are not installed securely, dust or
		water may enter the HR unit and fire or electric shock may
		result.
	• Be cautious when unpacking and installing the product.
	- Sharp edges could cause injury. Be especially careful of the
		case edges.
	• Safely dispose of the packing materials.
		- Packing materials, such as nails and other metal or wooden
		parts, may cause puncture wounds or other injuries.
		- Tear apart and throw away plastic packaging bags so that
		children may not play with them and risk suffocation and
		death.

IMPORTANT SAFETY INSTRUCTIONS 5

! CAUTION

•Avoid a place where rain may enter since the HR unit is for indoor installations only.

-There is risk of property damage, failure of product, or electric shock.

•Do not install a HR unit in a space where persons exists such as living room, office or meeting room with not only low but also open ceiling.

•Always check for gas (refrigerant) leakage after installation or repair of product.

-Low refrigerant levels may cause failure of product.

•Keep level even when installing the product.

-To avoid vibration or water leakage.

•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.

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6	TABLE OF CONTENTS

TABLE OF CONTENTS

2TIPS FOR SAVING ENERGY

3IMPORTANT SAFETY INSTRUCTIONS

7FEATURES

9INSTALLATION PART

10 INSTALLATION

10 Selection of the best location

10 Dimensional drawings

13 HR Unit Installation

16Insulation

17Wiring Connection

18HR Unit PCB

19Setting the HR Unit switches

26COIL EXCHANGING METHOD

27JOINT METHOD OF HR UNIT

FEATURES 7

FEATURES

Control Box

Connection Pipe (to outdoor unit)

Connection Pipe

(to outdoor unit)

Connection Pipe (to indoor unit)

Model			PRHR023A		PRHR033A		PRHR043A
Max. Connectable No. of Indoor Units			16		24		32
Max. Connectable No. of Indoor Units of a branch			8		8		8
Power Input	Cooling [W]			39.8
	Heating [W]			37.2
Net. Weight	kg		14.9		16.7		18.2
	lbs		32.8		36.8		40.1
Shipping	kg		20.7		22.5		24.0
Weight	lbs		45.6		49.6		52.9
Dimensions	mm				786 X 218 X 657
(WxHxD)	Inch				30.9 X 8.6 X 25.9
Casing				Galvanized steel plate
		Liquid Pipe		Ø9.52[3/8] – Ø6.35[1/4]
		[mm/inch]
	Indoor side
		Gas Pipe		Ø15.88[5/8] – Ø12.7[1/2]
		[mm/inch]
Connecting
		Liquid	Ø9.52[3/8]		Ø12.7[1/2]		Ø15.88[5/8]
Pipes		[mm/inch]
	Outdoor side	Low Pressure	Ø22.2[7/8]		Ø28.58[1-1/8]		Ø28.58[1-1/8]
		[mm/inch]
		High Pressure	Ø19.05[3/4]		Ø22.2[7/8]		Ø22.2[7/8]
		[mm/inch]
Sound Absorbing Insulation Material				Polyethylene Foam
Current	Minimum circuit Amps(MCA)			0.17
	Maximum fuse Amps(MFA)			15
Power Supply				1Ø, 208/230 V, 60 Hz

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8 FEATURES

Connection Pipe

(to outdoor unit)

Control Box

Connection Pipe

(to indoor unit)

Connection Pipe (to outdoor unit)

Model			PRHR063A		PRHR083A
Max. Connectable No. of Indoor Units			48		64
Max. Connectable No. of Indoor Units of a branch			8		8
Power Input	Cooling [W]		75.9
	Heating [W]		72.1
Net. Weight	kg		27.2		30.7
	lbs		60.0		67.7
Shipping	kg		33.8		37.3
Weight	lbs		74.5		82.2
Dimensions	mm		1 113 X 218 X 657
(WxHxD)	Inch		43.8 X 8.6 X 25.9
Casing			Galvanized steel plate
	Indoor	Liquid Pipe [mm/inch]	Ø9.52[3/8] – Ø6.35[1/4]
	side	Gas Pipe [mm/inch]	Ø15.88[5/8] – Ø12.7[1/2]
Connecting
		Liquid [mm/inch]	Ø15.88[5/8]
Pipes
	Outdoor
		Low Pressure [mm/inch]	Ø28.58[1-1/8]
	side
		High Pressure [mm/inch]	Ø22.2[7/8]
Sound Absorbing Insulation Material			Polyethylene Foam
Current	Minimum circuit Amps(MCA)		0.27
	Maximum fuse Amps(MFA)		15
Power Supply			1Ø, 208/230 V, 60 Hz

INSTALLATION PART 9

INSTALLATION PART

-Installation Manual

-Hanging bolts (4 x M10 or M8), Nut(8 x M10 or M8), Flat washers(8 x M10)

-Reducers

[Unit : mm(inch)]

Gas pipe

Models	Liquid pipe		High pressure				Low pressure
PRHR023A			OD19.05(3/4)	Ø15.88(5/8) Ø12.7(1/2)			OD22.2(7/8) Ø19.05(3/4) Ø15.88(5/8)
	OD9.52(3/8)	Ø6.35(1/4)
HR unit			OD12.7(1/2)			Ø9.52(3/8)	OD15.88(5/8) Ø12.7(1/2)
reducer
PRHR033A			OD22.2(7/8)	Ø19.05(3/4) Ø15.88(5/8)
PRHR043A	OD15.88(5/8) Ø12.7(1/2) Ø9.52(3/8)						OD28.58(1-1/8) Ø22.2(7/8) Ø19.05(3/4)
PRHR063A
PRHR083A
	OD12.7(1/2)	Ø9.52(3/8)	OD15.88(5/8)		Ø12.7(1/2)		OD19.05(3/4)	Ø15.88(5/8)

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