LG Multi-Type User manual
LG Multi Type
Air Conditioner
(Ceiling Duct Type)
INSTALLATION MANUAL
LG
IMPORTANT
• Please read this installation manual completely before
installing the product.
• When the power cord is damaged, replacement work shall
be performed by authorized personnel only.
• 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.
website http://www.lgservice.com
e-mail http://lgservice.com/techsup.html
2Multi Type Air Conditioner
Multi Type Air Conditioner Installation Manual
TABLE OF CONTENTS
Safety Precautions..............3
Introduction .........................6
Installation of Indoor...........7
Connecting Pipes to the
Indoor Unit.........................12
Connecting Pipes to the ..14
Checking the Drainage .....14
Connecting Cables
between Indoor Unit .........15
Group Control....................17
Two Thermistor system....17
E.S.P.(External Static
Pressure) Setting...............18
How to Set E.S.P? .............19
Installation
Requirements Required Parts Required Tools
•
Four Type “A” screws
•
Connecting cable
•
Level
•
Screw driver
•
Electric drill
•
Hole core drill (ø70mm)
•
Pipes: Gas side...........1/2", 3/8"
Liquid side...........................1/4"
•
Insulated drain hose
•
Insulation materials
•
Flaring Tools set
•
Additional Drain hose
(Inner Dia...............25mm)
•
Screw driver
•
Hexagonal Wrench (4mm/5mm)
•
Gas-leak Detector
Safety Precautions
Installation Manual 3
To prevent injury to the user or other people and property damage, the following instructions must be
followed.
■Be sure to read before installing the air conditioner.
■Be sure to observe the cautions specified here as they include important items related to safety.
■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
■Meanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
■Installation
Be sure not to do.
Be sure to follow the instruction.
Safety Precautions
Do not use a defective or
underrated circuit breaker.
Use this appliance on a
dedicated circuit.
• There is risk of fire or electric
shock.
For electrical work, contact
the dealer, seller, a
qualified electrician, or an
Authorized Service Center.
• Do not disassemble or repair
the product. There is risk of
fire or electric shock.
Always ground the
product.
• There is risk of fire or electric
shock.
Install the panel and the
cover of control box
securely.
• There is risk of fire or electric
shock.
Always install a dedicated
circuit and breaker.
• Improper wiring or installation
may cause fire or electric
shock
Use the correctly rated
breaker or fuse.
• There is risk of fire or electric
shock.
Safety Precautions
■Operation
4Multi Type Air Conditioner
Do not modify or extend
the power cable.
• There is risk of fire or electric
shock.
Do not let the air
conditioner run for a long
time when the humidity is
very high and a door or a
window is left open.
• Moisture may condense and
wet or damage furniture.
Be cautious when
unpacking and installing
the product.
• Sharp edges could cause
injury. Be especially careful of
the case edges and the fins on
the condenser and evaporator.
For installation, always
contact the dealer or an
Authorized Service Center.
• There is risk of fire, electric
shock, explosion, or injury.
Do not install the product
on a defective installation
stand.
• It may cause injury, accident,
or damage to the product.
Be sure the installation
area does not deteriorate
with age.
• If the base collapses, the air
conditioner could fall with it,
causing property damage,
product failure, and personal
injury.
Do not store or use flammable gas or combustibles near the product.
• There is risk of fire or failure of product.
Gasolin
Installation Manual 5
Safety Precautions
Always check for gas
(refrigerant) leakage after
installation or repair of
product.
• Low refrigerant levels may
cause failure of product.
Install the drain hose to
ensure that water is
drained away properly.
• A bad connection may cause
water leakage.
Keep level even when
installing the product.
• To avoid vibration or water
leakage.
Do not install the product
where the noise or hot air
from the outdoor unit could
damage the neighborhoods.
• It may cause a problem for
your neighbors.
Use two or more people to
lift and transport the
product.
• Avoid personal injury.
Do not install the product
where it will be exposed to
sea wind (salt spray)
directly.
• It may cause corrosion on the
product. Corrosion, particularly
on the condenser and evaporator
fins, could cause product
malfunction or inefficient
operation.
90˚
■Installation
6Multi Type Air Conditioner
Introduction
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
air conditioner.
This symbol indicates special notes.
NOTICE
Introduction
Symbols Used in this Manual
Features
Air filters
Air intake vents
Remote Controller
Air outlet vents
more than
10cm
Installation Manual 7
Installation of Indoor
Installation of Indoor
Selection of the best location
1) Indoor unit
Select location
Install the air conditioner in the location that
satisfies the following conditions.
•The place shall easily bear a load exceeding
four times the indoor unit’s weight.
•The place shall be able to inspect the unit as
the figure.
•The place where the unit shall be leveled.
•The place shall allow easy water
drainage.(Suitable dimension “H”is necessary
to get a slope to drain as figure.)
•The place shall easily connect with the
outdoor unit.
•The place where the unit is not affected by an
electrical noise.
•The place where air circulation in the room will
be good .
•There should not be any heat source or steam
near the unit
H
600600
Top view
(unit: mm)
Front view
Inspection hole
(600X600)
Control box
Indoor unit installation
■Installation of Unit
Install the unit above the ceiling correctly.
•Apply a joint-canvas between the unit and
duct to absorb unnecessary vibration.
•Apply a filter Accessory at air return hole.
CASE 1
POSITION OF SUSPENSION BOLT
(Unit:mm)
9/12K 708 678 434 51 537 455 230 172
18K 1060 1030 434 51 535 805 230 175
Dimension
Capacity
ABCDEFGH
Drainage hole
A
B
CD
1-3 mm
F
H
G
E
8Multi Type Air Conditioner
•Select and mark the position for fixing
bolts.
•Drill the hole for set anchor on the face of
ceiling.
•Insert the set anchor and washer onto the
suspension bolts for locking the
suspension bolts on the ceiling.
•Mount the suspension bolts to the set
anchor firmly.
•Secure the installation plates onto the
suspension bolts (adjust level roughly)
using nuts, washers and spring washers.
CAUTION: Tighten the nut and bolt
to prevent unit falling
1 Set anchor
Old building New building
2 Plate washer
3 Spring washer
4 Nut
5 Suspension
bolts
Installation of Indoor
•Install the unit leaning to a drainage hole
side as a figure for easy water drainage.
•A place where the unit will be leveled and
that can support the weight of the unit.
•A place where the unit can withstand its
vibration.
•A place where service can be easily
performed.
CASE 2
POSITION OF CONSOLE BOLT
M10 Nut
M10 SP. washer
M10 washer
X 4
X 4 (Local
supply)
X 4
M10 Nut
M10 SP. washer
M10 washer
X 4
X 4 (Local
supply)
X 4
Installation Manual 9
Installation of Indoor
Ceiling
CAUTION
1~3mm
Drainage hole
Drainage hole
U-Trap
B
C
A ≥70mm
B ≥2C
C ≥2 x SP
SP = External Pressure
(mmAq)
Ex) External Pressure
= 10mmAq
A ≥70mm
B ≥40mm
C ≥20mm
A
Make sure to be closed.
Unit
Drainage pipe
(Local supply)
Thermal insulator
(Local supply)
Drainage hole
CAUTION FOR GRADIENT OF
UNIT AND DRAIN PIPING
Lay the drain hose with a downward
inclination so water will drain out.
Front of view
•Always lay the drain with downward
inclination (1/50 to 1/100).
Prevent any upward flow or reverse flow
in any part.
•5mm or thicker formed thermal insulator
shall always be provided for the drain
pipe.
•Install the P-Trap (or U-Trap) to prevent
a water leakage caused by the blocking
of intake air filter.
Applied U-Trap Dimension
1. Install declination of the indoor unit is very important for the drain of the duct type air
conditioner.
2. Minimum thickness of the insulation for the connecting pipe shall be 5mm.
•The unit must be horizontal or declined to the drain hose connected when finished
installation.
CORRECT
CORRECT
INCORRECT
INCORRECT
•Upward routing not
allowed
10 Multi Type Air Conditioner
•Drill the piping hole with 70mm dia, hole
core drill.
•Piping hole should be slightly slant to the
outdoor side.
5~7mm
Indoor Outdoor
WALL
INSULATION, OTHERS Insulate the joint and tubes completely.
All thermal insulation must comply with local requirement.
INDOOR UNIT
REFRIGERANT PIPE
•Insulate and tape both the gas pipe and
liquid pipe.
■After all workings are finished, check the working and operation.
•Air distribution Is the air circulation good?
•Drain Is the drainage smoothly and no sweating?
•Gas leakage Is the piping connection correctly?
•Wiring Is the wiring connection correctly?
•Service Valve Lock-bolt Is the lock-bolt of Service Valve loosened?
THERMAL INSULATION
TEST AND CHECK
Make sure that there is no clearance here.
Overlap with thermal
insulator for piping.
Thermal insulator for refrigerant pipe
(Local supply) Thermal insulator for
piping(Local supply)
Hose clip for thermal insulator(Local supply)
Union for liquid pipe
Refrigerant pipe and thermal
insulator(Local supply)
Union for gas pipe
Thermal insulator for refrigerant pipe
(Local supply)
Hose clip for thermal insulator
(Local supply)
Power cable
Liquid pipe
Thermal insulator
Gas pipe
Tape
Installation of Indoor
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