LG | LMU18CHV | Installation manual | LG LMU24CHV Installation Manual

LG LMU24CHV Installation Manual
ENGLISH
FRANÇAIS
ESPAÑOL
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.
TYPE : Multi Type
http://www.lghvac.com
www.lg.com
P/NO : MFL68280101
FLEX MULTI SPLIT INSTALLATION
INSTRUCTIONS
Multi Air Conditioner Installation Manual
Installation Requirements
Installation Parts Provided ...................................................4
Safety Precautions ................................................................5
Installation of Indoor, Outdoor Unit .....................................8
Select the best location ....................................................8
Seaside Applications and Installation ..............................10
Seasonal Wind And Cautions In Winter...........................11
Piping length and elevation .............................................12
Installation............................................................................14
Connecting the piping......................................................14
How To Fix.......................................................................18
Wiring Connection ...........................................................19
Conduit connection..........................................................19
Ceiling dimension and hanging bolt location ...................20
How to Fix .......................................................................21
Wiring Connection ...........................................................21
Conduit connection..........................................................21
Installation of Wired Remote Controller(Optional)...........22
Installation of Decorative Panel.......................................24
Drain Piping.....................................................................26
Flaring Work and Connection of Piping ............................29
Flaring work.....................................................................29
Connection of piping - Outdoor .......................................30
Installation .......................................................................33
Installation of The Main Unit............................................34
Connecting the Cable between Indoor Unit, Distributor
Unit and Outdoor Unit .........................................................35
Connect the cable to the Indoor unit. ..............................35
Connect the cable to the Distributor unit .........................36
Connect the cable to the Outdoor unit.............................37
Connection method of the connecting cable(Example)...39
Checking the Drainage, Insulating the Pipe and Special
Piping Applications .............................................................40
Checking the drainage ....................................................40
Insulating the Pipe and Special Piping Applications........40
Air Purging and Evacuation................................................41
Leak Checking.................................................................41
Evacuation.......................................................................42
Charging ...............................................................................43
Installation PI485 .................................................................45
Test Running ........................................................................46
Function................................................................................47
Dip S/W Setting ...............................................................47
Forced Cooling Operation ...............................................48
Wiring Error Check ..........................................................49
Saving Power Consumption ............................................49
Night Quiet Mode ............................................................50
Mode Lock.......................................................................51
Pcb Display(18/24k Model Only) .....................................52
Combination indoor units ...................................................53
Required Tools
o Level gauge
o Screw driver
o Electric drill
o Hole core drill (ø50mm)
o Flaring tool set
o Specified torque wrenches
1.8kg.m, 4.2kg.m, 5.5kg.m, 6.6kg.m
(different depending on model No.)
o Adjustable wrench
o A glass of water
o Screw driver
o Hexagonal wrench(4mm)
o Refrigerant Gas Leak Detector
o Vacuum pump
o Gauge manifold
o Owner's manual
o Thermometer
o Remote Control Holder
Installation Manual 3
ENGLISH
TABLE OF CONTENTS
Installation Parts Provided
Installation Parts Provided
[Wall mounted / ART COOL Mirror]
Type 1
Type 2
Type 3
Type 4
Installation plate
Installation plate
Installation plate
Installation plate
Type "B" screw
Type "B" screw
Type "B" screw Type "C" screw
Type "B" screw Type "C" screw
Type "A" screw
Type "A" screw
Type “A” screw
Type “A” screw
Remote control holder
Remote control holder
Remote control holder
Remote control holder
[Ceiling Concealed Duct Type]
Name
Clamp metal
Insulation for
fitting
Screws for
duct flanges
Clamp
Conduit
Bracket
Quantity
1 EA
1 set
1 set
8 EA
1 EA
Shape
for gas pipe
Conduit Bracket
for liquid pipe
Screw(M4) 2EA
[Ceiling Cassette Type]
Name
Drain hose
Quantity
1 EA
Washer for
Clamp metal hanging backet
Shape
4 Multi Air Conditioner
1 EA
8 EA
Clamp
Conduit
Bracket
Insulation for
fitting
Remote
control holder
8 EA
1 EA
1 SET
1 EA
Conduit Bracket
for gas pipe
Screw(M4) 2EA
for liquid pipe
Product Introduction
WARNING
This symbol indicates the possibility of death or serious injury.
CAUTION
This symbol indicates the possibility of injury or damage to properties only.
n The meanings of the symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
n Installation
Always perform grounding.
• Otherwise, it may cause electrical shock.
Securely attach the electrical
part cover to the indoor unit
and the service panel to the
outdoor unit.
Donʼt use a power cord, a
plug or a loose socket which
is damaged.
• Otherwise, it may cause a fire or • Otherwise, it may cause a fire,
electrical shock, explosion or inelectrical shock.
jury.
Always install an air leakage
breaker and a dedicated
switching board.
• If the electrical part cover of the • No installation may cause a fire
indoor unit and the service panel and electrical shock.
of the outdoor unit are not attached securely, it could result in
a fire or electric shock due to
dust, water, etc.
Ensure that an installation frame of the outdoor unit is not damaged due to use for a long
time.
• It may cause injury or an accident.
For installation of the product,
always contact the service center or a professional installation
agency.
Do not keep or use flammable
gases or combustibles near
the air conditioner.
• Otherwise, it may cause a fire or
the failure of product.
Do not disassemble or repair the product randomly.
• It will cause a fire or electrical shock.
h The figure can be changed according to model.
Installation Manual 5
ENGLISH
Safety Precautions
To prevent the injury of the user or other people and property damage, the following instructions
must be followed.
n Be sure to read before installing the air conditioner.
n Be sure to observe the cautions specified here as they include important items related to safety.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
Safety Precautions
Do not install the product at a place that there
is concern of falling down.
• Otherwise, it may result in personal injury.
Use caution when unpacking and installing.
• Sharp edges may cause injury.
Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress air
or Oxygen and Do not use Flammable gases. Otherwise, it may cause fire or explosion.
• There is the risk of death, injury, fire or explosion.
n Operation
Do not share the outlet with
other appliances.
Do not use the damaged
power cord.
• It will cause an electric shock or • Otherwise, it may cause a fire
a fire due to heat generation.
or electrical shock.
Do not modify or extend the
power cord randomly.
• Otherwise, it may cause a fire
or electrical shock.
Take care so that the power
cord may not be pulled during operation.
Unplug the unit if strange
sounds, smell, or smoke
comes from it.
• Otherwise, it may cause a fire
or electrical shock.
• Otherwise, it may cause electrical shock or a fire.
• Otherwise, it may cause a fire.
Do not use the power cord
near the heating tools.
Do not open the suction
inlet of the indoor/outdoor
unit during operation.
Take the power plug out if
necessary, holding the head
of the plug and do not touch
it with wet hands.
• Otherwise, it may cause a fire
or electrical shock.
Do not allow water to run
into electrical parts.
• Otherwise, it may cause the
failure of machine or electrical
shock.
Do not step on the
indoor/outdoor unit and do
not put anything on it.
• Otherwise, it may cause a fire
and electrical shock.
Hold the plug by the head
when taking it out.
• It may cause electric shock
and damage.
Do not place a heavy object
on the power cord.
• It may cause an injury through • Otherwise, it may cause a fire
dropping of the unit or falling
or electrical shock.
down.
Take care so that children may not step on the outdoor unit.
• Otherwise, children may be seriously injured due to falling down.
6 Multi Air Conditioner
Keep the flames away.
• Otherwise, it may electrical
shock and failure.
Never touch the metal parts
of the unit when removing
the filter.
• They are sharp and may
cause injury.
When the product is submerged into water, always
contact the service center.
• Otherwise, it may cause a fire
or electrical shock.
Safety Precautions
ENGLISH
CAUTION
n Installation
Install the drain hose to ensure that drain
can be securely done.
• Otherwise, it may cause water leakage.
Always inspect gas leakage after the installation and repair of product.
• Otherwise, it may cause the failure of product.
Install the product so that the noise or hot
wind from the outdoor unit may not cause
any damage to the neighbors.
• Otherwise, it may cause dispute with the neighbors.
Keep level parallel in installing the product.
• Otherwise, it may cause vibration or water leakage.
n Operation
Avoid excessive cooling and perform ventilation sometimes.
• Otherwise, it may do harm to your health.
Do not use an appliance for special purposes
such as preserving animals vegetables, precision machine, or art articles.
• Otherwise, it may damage your properties.
Use a soft cloth to clean. Do not use wax,
thinner, or a strong detergent.
• The appearance of the air conditioner may deteriorate, change color, or develop surface
flaws.
Do not place obstacles around the flow inlet
or outlet.
• Otherwise, it may cause the failure of appliance
or an accident.
Installation Manual 7
Safety Precautions
Installation of Indoor, Outdoor Unit
Read completely, then follow step by step.
Select the best location
Indoor unit
1. Do not have any heat or steam near the unit.
2. Select a place where there are no obstacles in
front of the unit.
3. Make sure that condensation drainage can be
conveniently routed away.
4. Do not install near a doorway.
5. Ensure the unit is unobstructed, allow proper
space on all sides according to the arrows and
distance measurements in the figures.
6. Use a Metal Detector or Metal Scanner to locate
studs to prevent unnecessary damage to the wall.
[Wall mounted / ART COOL Mirror]
More than
100(3-15/16)
More than 200(7-7/8)
More than
100(3-15/16)
Recommended height
2000(78-3/4)
Unit:mm(inch)
❈ Note : remove obstructions to prevent blockage of airflow path
[Ceiling Concealed Duct Type]
[Ceiling Cassette Type]
Top view
Inspection hole
[600(23-5/8) x 600(23-5/8)]
Control box
10(13/32)
or more
500(19-11/16)
or more
Front view
30(1-3/16)
±3(1/8)
Ceiling Board
300(11-13/16) or less
600
(23-5/8)
1000(39-3/8)
or more
600
(23-5/8)
At least 1800(70-7/8)
3600(141-23/32) or less
Ceiling
Ceiling Board
500(19-11/16)
or more
Unit:mm(inch)
Floor
H=20(25/32) or more
Ceiling
[ART COOL Gallery]
Service Space
More than
500(19-11/16)
A
B
* Suitable dimention “H” is necessary to get a slope to
drain as show in the figure.
Capacity(Btu/h class)
A
B
9/12k
600(23-5/8)
900(35-7/16)
18k
600(23-5/8)
1100(43-5/16)
8 Multi Air Conditioner
More than
1500(59-11/200)
More than
200(7-87/100)
More than
500(19-11/16)
Unit:mm(inch)
Installation of Indoor, Outdoor Unit
1. If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that
heat radiation from the condenser is not restricted.
2. Ensure the unit is unobstructed, allow proper
space on all sides according to the arrows
and distance measurements in the figures.
3. Do not place animals and plants in the path of
the warm air.
4. Take the air conditioner weight into account
and select a place where noise and vibration
are minimum.
5. Select a place so that the warm air and sound
from the air conditioner does not disturb
neighbors.
ENGLISH
Outdoor unit
more than
600 (23 21/32)
more than
300 (11 13/16)
more than
700 (27 9/16)
more than
300 (11 13/16)
more than
600 (23 21/32)
Unit:mm(inch)
Rooftop Installations:
If the outdoor unit is installed on a roof structure,
be sure to level the unit. Ensure the roof structure and anchoring method are adequate for the
unit location. Consult local codes regarding
rooftop mounting.
Installation Manual 9
Installation of Indoor, Outdoor Unit
Seaside Applications and Installation
1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are
produced.
2. Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result
corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could
cause product malfunction or inefficient performance.
3. If outdoor unit is installed close to the seaside, it should avoid direct exposure to the sea wind.
1. Selecting the location(Outdoor Unit)
1) If the outdoor unit is to be installed close to the seaside, direct exposure to the sea wind should be avoided.
Install the outdoor unit on the opposite side of the sea wind direction.
Sea wind
Sea wind
2) In case, to install the outdoor unit on the seaside, set up a windbreaker/barrier, to lessen the unit's exposure to sea air
Windbreaker/Barrier
• It should be strong enough (like concrete) to obstruct
the wind from the sea.
• The height and width should be more than 150% of
the outdoor unit.
Sea wind
• A minimum of 70cm (27 1/16 inches)
of space between outdoor unit and the windbreak
for easy air flow.
3) Select a well-drained place.
Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger
using water is recommended.
10 Multi Air Conditioner
Installation of Indoor, Outdoor Unit
- Sufficient measures are required in a snow area or severe cold area in winter so that product can
be operated well.
- Get ready for seasonal wind or snow in winter even in other areas.
- Install a suction and discharge duct not to let in snow or rain.
- Install the outdoor unit not to come in contact with snow directly. If snow piles up and freezes on the
air suction hole, the system may malfunction. If it is installed at snowy area, attach the hood to the
system.
- Install the outdoor unit at the higher installation console by 50cm than the average snowfall (annual
average snowfall) if it is installed at the area with much snowfall.
- Where snow accumulated on the upper part of the Outdoor Unit by more than 10cm, always remove snow for operation.
1. The height of H frame must be more than 2 times the snowfall and its width shall not exceed the
width of the product. (If width of the frame is wider than that of the product, snow may accumulate)
2. Don't install the suction hole and discharge hole of the Outdoor Unit facing the seasonal wind.
Installation Manual 11
ENGLISH
Seasonal Wind And Cautions In Winter
Installation of Indoor, Outdoor Unit
Piping length and elevation
Multi Piping Type
Outdoor Unit
Capacity
(Btu/h class)
18k
Max total length
of all pipes
(A+B)/(A+B+C)/
(A+B+C+D)
50(164)
Unit : m(ft)
Max Elevation
Max elevation Max.Combination
between each
between indoor of Indoor unit
indoor unit and
(Btu/h class)
units (h2)
outdoor unit (h1)
24k
7.5(25)
15(49)
Max length of
each pipe
(A/B/C/D)
Min length of
each pipe
(A/B/C/D)
25(82)
3(10)
3(10)
15(49)
7.5(25)
33k
3(10)
15(49)
7.5(25)
48k
24k
75(246)
25(82)
36k
75(246)
25(82)
Pipe Diameter
Unit : mm(inch)
Indoor unit Capacity (Btu/h class)
Gas
Liquid
9k
9.52(3/8)
6.35(1/4)
12k
9.52(3/8)
6.35(1/4)
18k
12.7(1/2)
6.35(1/4)
A
h2
h1
B
Multiple Piping Type
CAUTION: Capacity is based on standard length and maximum allowance
length is on the basis of reliability.
12 Multi Air Conditioner
Installation of Indoor, Outdoor Unit
Max total length Max length
Outdoor Unit
of all pipes
of
Capacity
(Main + Branch Main pipe
(Btu/h class)
pipes)
(A+B+C)
54k
145(476)
55(180)
Unit : m(ft)
Max length
Max length
of
of each
Branch
Branch pipe
pipes
90(295)
Min length of
each pipe
(Main /
Branch
pipes)
15(49)
3(10)
Max Elevation Max ElevaMax CombiBetween each
tion
nation
indoor unit and Between inof indoor
outdoor unit
door
unit
(h1)
(h2)
30(98)
15(49)
73k
Pipe Diameter
Unit : mm(inch)
Indoor unit Capacity (Btu/h class)
Gas
Liquid
9k
9.52(3/8)
6.35(1/4)
12k
9.52(3/8)
6.35(1/4)
18k
12.7(1/2)
6.35(1/4)
C
Branch Pipe
Distributor
Distributor
h2
h1
B
Main Pipe
A
CAUTION: Capacity is based on standard length and maximum allowance
length is on the basis of reliability.
Installation Manual 13
ENGLISH
Distributor Piping Type
Installation
Installation
[Wall mounted / ART COOL Mirror]
Connecting the piping
# Standard / Artcool Mirror Type
1. Prepare the indoor unit's piping and drain
hose for installation through the wall.
2. Remove the plastic tubing retainer(see the illustration on the right) and pull the tubing and
drain hose away from chassis.
3. Route the indoor tubing and the drain hose to
the required piping hole position.
4. Insert the piping, drain hose, and the connecting cable into the piping hole.
5. Insert the connecting cable into the indoor unit.
• Don't connect the cable to the indoor unit.
• Make a small loop with the cable for easy
connection later.
6. Tape the tubing and drain hose.
Drain pipe
Tape
Connecting
pipe
Drain hose
For right rear piping
7. Indoor unit installation
• Hang the indoor unit from the hooks at the
top of the installation plate.
• Insert the spacer etc. between the indoor
unit and the installation plate and separate
the bottom of the indoor unit from the wall.
For left rear piping
Indoor unit
Spacer
Installation plate
80(3 5/32)
14 Multi Air Conditioner
Installation
ENGLISH
# Standard Libero / Artcool Libero Type
1. Pull the screw cap at the bottom of the
indoor unit
2. Remove the chassis cover from the unit
by loosing screws
Chassis cover
Indoor unit back side view
3. Pull back the tubing holder.
Pipe Port
4. Remove pipe port cover and positioning
the tubing
Left
Right
Tubing holder
Backwards
5. Indoor unit installation
1) Hook the indoor unit onto the upper portion
of the installation plate.( engage the three
hooks at the top of the indoor unit with the
upper edge of the installation plate) Ensure
that the hooks are properly seated on the
installation plate by moving it left and right
Installation plate
2) Unlock the tubing holder from the chassis
and mount between the chassis and
installation plate in order to separate the
bottom side of the indoor unit from the wall
Tubing Holder
Installation Manual 15
Installation
Connecting the piping to the indoor unit
and drain hose to drain pipe.
1. Align the center of the pipes and sufficiently tighten the flare nut by hand.
Indoor unit tubing
Flare nut
Pipes
2. Tighten the flare nut with a wrench.
Open-end wrench (fixed)
Outside diameter
mm
inch
Ø6.35
1/4
Ø9.52
3/8
Ø12.7
1/2
Ø15.88
5/8
Ø19.05
3/4
N. m
14~18
34~42
49~61
69~82
100~120
Torque
kgf.m
1.4~1.8
3.5~4.3
5.0~6.2
7.0~8.4
10.0~12.2
lbf.ft
10~13
25~31
36~45
51~60
73~88
3. Next, extend the indoor unit's drain hose.
Then attach the drain pipe.
Flare nut
Wrench
Connection pipe
Indoor unit tubing
Drain pipe
Indoor unit drain hose
Adhesive
Vinyl tape(narrow)
Installation Information. For left piping. Follow the instruction below.
Good case
• Press on the upper side of clamp and unfold the tubing to slowly downward.
Bad case
• Bending the pipe from right to left may cause damage to the tubing.
16 Multi Air Conditioner
Installation
Plastic bands Insulation material
Indoor unit pipe
Connection pipe
Wrap with vinyl tape
Vinyl tape (wide)
Pipe
Vinyl tape(narrow)
3. Bundle the piping and drain hose together by
wrapping them with vinyl tape over the range
within which they fit into the rear piping housing
section.
Vinyl tape(wide)
Drain hose
Reroute the pipings and the drain hose across
the back of the chassis.
Finishing the indoor unit installation
# Standard / Artcool Mirror Type
1. Remove the spacer.
2. Ensure that the hooks are properly seated on
the installation plate by moving it left and right.
3. Press the lower left and right sides of the unit
against the installation plate until the hooks engage into their slots(clicking sound).
# Standard Libero / Artcool Libero Type
1. Mount the tubing holder in the original positon.
2. Ensure that the hooks are properly seated on the
installation plate by moving it left and right.
3. Press the lower left and right sides of the unit
against the installation plate until the hooks
engage into their slots (clicking sound).
4. Finish the assembly by screwing the unit to the
installation plate by using two pieces of type "C"
screws. And assemble a chassis cover.
Piping for
passage through
piping hole
Connecting
Drain hose
Type 'C' screw
If the split type Indoor unit is installed in a wall having hole or opening near by or back side of the
unit, then the air from other side of the wall can come inside the condition space through that hole /
opening. That air can cause unwanted dew / water droplet formation when it comes in contact with
body of the indoor unit. So all hole or opening on the wall must be blocked very well to avoid water
dropping from the body of the unit.
Installation Manual 17
ENGLISH
Wrap the insulation material around the connecting portion.
1. Overlap the connection pipe insulation and the
indoor unit pipe heat insulation material. Bind
them together with vinyl tape so that there is no
gap.
2. Wrap the area which accommodates the rear
piping housing section with vinyl tape.
Installation
Installation of filters
1) Detach two attached tapes from the plasma
filter.
Plasma Filter
How To Fix
The wall you select should be strong and solid enough to prevent vibration
1. Mount the installation plate on the wall with
type "A" screws. If mounting the unit on a concrete wall, use anchor bolts.
• Mount the installation plate horizontally by aligning the centerline using a level.
2. Measure the wall and mark the centerline. It is also important to use caution concerning the location of the installation plate-routing of the wiring to power outlets is through the walls typically.
Drilling the hole through the wall for piping connections must be done safely.
Indoor Type
Capacity (kBtu/h)
9/12
18
Wall mounted / ART COOL
Mirror
<Type 1>
Type
Type 1 / Type 3
Type 2 / Type 4
<Type 2>
Installation Plate
Installation Plate
Chassis
Hook
Chassis
Hook
Type “A”
Ø70
(2 3/4)
110
(4 11/32)
110(4 11/32)
Type “A”
90
(3 17/32)
70
(2 3/4)
Left rear piping
Right rear piping
Ø70
(2 3/4)
Ø70
(2 3/4)
<Type 3>
133(5 1/4)
100(3 15/16)
Left rear piping
Right rear piping
Ø70
(2 3/4)
<Type 4>
Installation Plate
Installation Plate
Type "A" Screws
Type "A" Screws
Place a level on raised tab
Unit Outline
442(17 13/32)
Place a level on raised tab
Right rear piping
Unit Outline
442(17 13/32)
460(18 1/8)
Enganche
del chasis
570(22 7/16)
Enganche
del chasis
Ø70
(2 3/4)
Ø70
(2 3/4)
Left rear piping
Installation Plate
133(5 1/4)
175(6 7/8)
18 Multi Air Conditioner
Ø70
(2 3/4)
Ø70
(2 3/4)
Installation Plate
Measuring Tape
Left rear piping
95(5 3/4)
217(8 17/32)
69(2 23/32)
105(4 1/8)
Measuring Tape
Hanger
Right
rear
piping
56(2 7/32)
207(8 5/32)
Installation
ENGLISH
Wiring Connection
1. Connect the wires to the terminals on the control board individually according to the outdoor
unit connection.
• Ensure that the color of the wires of outdoor
unit and the terminal No. are the same as
those of indoor unit respectively.
Terminal Block in Indoor
1(L1) 2(L2)
3
4
Connecting cable
Connected to Outdoor Unit
2. Attach the Grille onto the cabinet.
• Grasp the lower left and right side of the
Grille and engage four tabs on the top inside
edge of the chassis.
• Press the Grille toward the chassis until it
goes back into place.
Conduit connection
1. Set the connecting cable into the terminal
block of indoor unit, and tighten set screw to
lock the conduit bracket to the indoor unit.
2. Join the conduit and the conduit bracket together.
Lock nut
Conduit
bracket
Conduit
CAUTION : Must use
the elbow type (L-Type)
conduit.
Connecting cable
View
Terminal block
Connecting cable
Cable retainer
Installation Manual 19
Installation
[Ceiling Cassette Type]
Ceiling dimension and hanging bolt location
• The dimensions of the paper model for installation are the same as those of the ceiling opening dimensions.
Ceiling
Ceiling board
Level gauge
585~660(23 1/16~26) (Ceiling Opening)
461(18 5/32)
585~660(23 1/16~26) (Ceiling Opening)
570(22 15/32)
Unit Size
517(20 3/8)
Unit Size
319(12 9/16) 570(22 15/32)
523(20 19/32)
517(20 3/8)
Unit: mm(inch)
• Select and mark the position for fixing bolts and piping
hole.
• Decide the position for fixing bolts slightly tilted to the
drain direction after considering the direction of drain
hose.
• Drill the hole for anchor bolt on the wall.
CAUTION :
• This air-conditioner uses a drain pump.
• Install the unit horizontally using a level
gauge.
• During the installation, care should be
taken not to damage electric wires.
NOTICE
• Avoid the following installation location.
1. Such places as restaurants and kitchen where considerable amount of oil steam and flour is generated.
These may cause heat exchange efficiency reduction, or water drops, drain pump mal-function.
In these cases, take the following actions;
• Make sure that ventilation fan is enough to cover all noxious gases from this place.
• Ensure enough distance from the cooking room to install the air
Air conditioner
conditioner in such a place where it may not suck oily steam.
2. Avoid installng air conditioner in such places where cooking oil or iron powder is generated.
Take enough
distance
3. Avoid places where inflammable gas is generated.
4. Avoid place where noxious gas is generated.
Cooking table
5. Avoid places near high frequency generators.
20 Multi Air Conditioner
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
Installation
Keep the length of the bolt
from the bracket to 40mm(1-9/16 inch)
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Flat washer for M10
(accessory)
Ceiling board
Spring washer
(M10)
① Hanging Bolt
- W 3/8 or M10
② Nut
- W 3/8 or M10
Ceiling board
Keep the length of 31~34mm(1.22~1.34inch)
between the air conditioner bottom surfac
e and the ceiling surface
Flat washer for M10
(accessory)
Nut
(W3/8 or M10)
• The following parts are local purchasing.
Air Conditioner body
150mm
(5-7/8 inch)
Ceiling
Set screw of
paper model (4 pieces)
Paper model
for installation
Open the ceiling board
along the outer edge of the
paper model
CAUTION : Tighten the nut and bolt to
prevent unit from falling off.
③ Spring Washer - M10
④ Plate Washer - M10
Wiring Connection
• Open the control box cover and connect the remote control cord and indoor power wires.
TQ/TR series
Terminal Block of Indoor Unit
1(L1)
2(L2)
3
4
Connected to outdoor unit
5
TO AIR
FRESH
KIT
OPTION
Conduit connection
• Remove the busing rubber product attached on the indoor unit.
• Join the conduit and the conduit bracket together using nut.
• Set the connecting cable into the terminal block of indoor unit, and tighten set screw to lock the
conduit bracket to the indoor unit.
Conduit bracket
Screw
Connecting Cable
Conduit
Installation Manual 21
ENGLISH
How to Fix
Installation
Installation of Wired Remote Controller(Optional)
1. Please fix tightly using provided screw after placing remote controller setup board
on the place where you like to setup.
- Please set it up not to bend because poor setup could take place if setup board bends.
Please set up remote controller board fit to the reclamation box if there is a reclamation box.
- Install the product so as not to make a gap with the wall side and to prevent shaking after the installation.
2. Can set up Wired remote controller cable into three directions.
- Setup direction: the surface of wall reclamation, upper, right
- If setting up remote controller cable into upper and right side, please set up after removing remote
controller cable guide groove.
h Remove guide groove with long nose.
① Reclamation to the surface of the wall
② Upper part guide groove
③ Right part guide groove
2
2
3
3
1
<Wire guide grooves>
22 Multi Air Conditioner
Installation
- Please connect not to make a gap at the remote controller
and setup boardʼs upper and lower, right and left part.
- Before assembly with the installation board, arrange the
Cable not to interfere with circuit parts.
<Connecting order>
Wall
Side
Wall
Side
<Separating order>
When separating remote controller from setup
board, as the picture below, after inserting
into the lower separating hole using screw
driver and then, spinning clockwise, remote
controller is separated.
Wall
Side
Wall
Side
- There are two separating holes. Please individually
separate one at a time.
- Please be careful not to damage the inside
components when separating.
4. Please connect indoor unit and remote controller using connection cable.
12V
Red
Please check if connector is normally connected.
Signal Yellow
GND
Indoor
Unit side
Black
Connecting cable
5. Please use extension cable if the distance between wired remote controller and
indoor unit is more than 10m(32.8ft).
CAUTION
When installing the wired remote controller, do not bury it in the wall.
(It can cause damage in the temperature sensor.)
Do not install the cable to be 50m(164ft) or above.
(It can cause communication error.)
• When installing the extension cable, check the connecting direction of the connector of the remote
controller side and the product side for correct installation.
• If you install the extension cable in the opposite direction, the connector will not be connected.
• Specification of extension cable: 2547 1007 22# 2 core 3 shield 5 or above.
Installation Manual 23
ENGLISH
3. Please fix remote controller upper part into
the setup board attached to the surface of the
wall, as the picture below, and then, connect
with setup board by pressing lower part.
Installation
Installation of Decorative Panel
The decorative panel has its installation direction.
Before installing the decorative panel, always remove the paper template.
1. Remove the packing and take out air inlet
grille from front panel.
Front grille
2. Remove the Corner covers of the panel.
Coner cover
3. Fit the panel on the unit by inserting
hooks as shown in picture.
Hook clip
Hook
4. Insert two screws on diagonal corners of
panel. Do not tighten the bolts completely.
(The fixing screws are included in the indoor unit box.)
Check the alignment of panel with the
ceiling. Height can be adjusted using
hanging bolts as shown in picture. Insert
the other two screws and tighten all
screws completely.
24 Multi Air Conditioner
Installation
ENGLISH
5. Fit the corner covers.
6. Open two screws of control panel cover.
Screw
7. Connect one display connector and two
vane control connectors of front panel to
indoor unit PCB.
The position marking on PCB is as:
Display connector : CN-DISPLAY
Vane control connector: CN-VANE 1,2
CN-VANE 1,2 CN-DISPLAY
8. Close the cover for control box.
9. Install the air inlet grille and Filter on the
panel.
Installation Manual 25
Installation
CAUTION: Install certainly the decorative panel.
Cool air leakage causes sweating. ⇨ Water drops fall.
Good example
Bad example
Air conditioner unit
Air conditioner
unit
Air
Ceiling
board
Cool air leakage
(no good)
Ceiling
board
Decorative
panel
Decorative panel
Fit the insulator (this part) and
be careful for cool air leakage
HEAT INSULATION
1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance [over 120°C(248°F)].
2. Precautions in high humidity circumstance:
This air conditioner has been tested according to the "KS Standard Conditions
with Mist" and confirmed that there is
not any default. However, if it is operated for a long time in high humid atmosphere [dew point temperature: more
than 23°C(73.4°F)], water drops are liable to fall. In this case, add heat insulation material according to the following
procedure:
Fastening band
(accessory)
Refrigerant piping
Indoor unit
Thermal insulator
(accessory)
• Heat insulation material to be prepared... Adiabatic glass wool with thickness 10 to 20mm.
• Stick glass wool on all air conditioners that are located in ceiling atmosphere.
Drain Piping
[Standard / Standard Libero / Artcool Mirror Type]
1. The drain hose should point downward for optimum drainage.
Downward slope
2. Incorrect Installation Examples:
Flexible drain hose
Accumulated
drain water
Air
Do not raise
Water
leakage
26 Multi Air Conditioner
Water
leakage
Kinking
Tip of drain hose
dipped in water
Water
leakage
Ditch
Less than 50mm
(1 31/32 inch) gap
Installation
• Drain piping must have down-slope (1/50 to 1/100): be
sure not to provide up-and-down slope to prevent reversal flow.
• During drain piping connection, be careful not to exert
extra force on the drain port on the indoor unit.
• The outside diameter of the drain connection on the indoor unit is 32mm(1 1/4 inch).
Piping material: Polyvinyl chloride pipe inner
diometes Ø 25mm(1 inch) and pipe fittings
Upward
routing
not allowed
Pipe clamp
Indoor unit
Maintenance
drain port
• Be sure to install heat insulation on the drain piping.
1/50~1/100
MAX : 700 mm(27 9/16 inch)
Heat insulation material: Polyethylene foam
with thickness more than 8mm(5/16 inch).
Drain test
The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:
• Connect the main drain pipe to the exterior and
leave it provisionally until the test comes to an
end.
• Feed water to the flexible drain hose and check
the piping for leakage.
• Be sure to check the drain pump for normal operating and noise when electrical wiring is complete.
• When the test is complete, connect the flexible
drain hose to the drain port on the indoor unit.
CAUTION : The supplied flexible drain hose should not be
curved, neither screwed. The
curved or screwed hose may
cause a leakage of water.
Feed water
Flexible drain hose
(accessory)
Main
drain pipe
Drain Pump
Drain
port
Glue the joint
Drain hose connection
Use the clip (accessory)
Drain pan
Flexible drain hose
Flexible drain hose
1/50~1/100
h The figure can be changed according to model.
Installation Manual 27
ENGLISH
[Ceiling Concealed Duct/Ceiling Cassette Type]
Installation
Attention
1. Possible drain-head height is up to
700mm(27 9/16 inch). So, it must be installed below 700mm(27 9/16 inch).
1/50~1/100
MAX 700mm
(27 9/16 inch)
2. Keep the drain hose downward up to
1/50~1/100 inclination.
Prevent any upward flow or reverse flow in
any part.
3. 5mm(3/16 inch) or thicker formed thermal insulator is provided for the drain pipe.
Thermal insulator
(Local supply)
Drain pipe
(Local supply)
Unit
Elbow
Drain pump
4. Upward routing is not allowed.
Wall
5. Be sure to check the drain pump for normal
operation and abnormal noise when electrical wiring is complete.
28 Multi Air Conditioner
Drain hose
Flaring Work and Connection of Piping
ENGLISH
Flaring Work and Connection of Piping
Flaring work
Main cause of gas leakage is defect in flaring
work. Carry out correct flaring work in the following procedure.
Copper
tube
Slanted Uneven Rough
90
1) Cut the pipes and the cable.
n Use the accessory piping kit or the pipes
purchased locally.
n Measure the distance between the indoor
and the outdoor unit.
n Cut the pipes a little longer than measured distance.
n Cut the cable 1.5m(4.9ft) longer than the
pipe length.
Pipe
Reamer
Point down
2) Burrs removal
n Completely remove all burrs from the cut
cross section of pipe/tube.
n Put the end of the copper tube/pipe to
downward direction as you remove burrs
in order to avoid to let burrs drop in the
tubing.
Flare nut
3) Putting nut on
Copper tube
n Remove flare nuts attached to indoor and
outdoor units, than put them on pipe/tube
having completed burr removal.
(Not possible to put them on after flaring
work)
4) Flaring work
n Carry out flaring work using flaring tool as
shown below.
Outside diameter
mm
inch
Ø6.35
1/4
Ø9.52
3/8
Ø12.7
1/2
Ø15.88
5/8
Ø19.05
3/4
Handle
Bar
Bar
"A"
A
mm
1.1~1.3
1.5~1.7
1.6~1.8
1.6~1.8
1.9~2.1
inch
0.04~0.05
0.06~0.07
0.06~0.07
0.06~0.07
0.07~0.08
Firmly hold copper tube in a bar(or die) as
indicated dimension in the table above.
Yoke
Cone
Copper pipe
Clamp handle
Red arrow mark
Smooth all round
Inside is shining without scratches.
5) Check
= Improper flaring =
n Compare the flared work with figure.
n If flare is noted to be defective, cut off the
flared section and do flaring work again.
Even length
all round
Inclined Surface Cracked Uneven
damaged
thickness
Installation Manual 29
Flaring Work and Connection of Piping
Connection of piping - Outdoor
Align the center of the piping and sufficiently
tighten the flare nut by hand.
Connecting pipe order
1) ROOM A~C gas side pipe
2) ROOM A~C liquid side pipe
Ø12.7(1/2 inch)
Connector
Finally, tighten the flare nut with torque wrench
until the wrench clicks.
• When tightening the flare nut with torque
wrench ensure the direction for tightening follows the arrow on the wrench.
Outside diameter
Outdoor unit
Main liguid
side valve
Torque
Main gas
side valve
Gas side
piping
mm
inch
N. m
kgf.m
lbf.ft
Ø6.35
1/4
14~18
1.4~1.8
10~13
Ø9.52
3/8
34~42
3.5~4.3
25~31
ROOM B
Ø12.7
1/2
49~61
5.0~6.2
36~45
ROOM C
Ø15.88
5/8
69~82
7.0~8.4
51~60
Ø19.05
3/4
100~120 10.0~12.2
30 Multi Air Conditioner
73~88
ROOM A
Liquid
side piping
Flaring Work and Connection of Piping
ENGLISH
• For the units with capacity more than 48 kBtu/h,
the installation piping is connectable in four
directions.(refer to figure 1)
• When connecting in a downward direction, knock
out the knockout hole of the base pan.
(refer to figure 2)
Continuous
→
Torque
wrench
(250mm )
Preventing foreign objects from entering
(Figure3)
• Plug the pipe through-holes with putty or
insulation material(procured locally)to stop up all
gaps,as shown in the figure 3.
• Insects or small animals entering the outdoor unit
may cause a short circuit in the electrical box.
❈ When tighten the pipe, hold the haxagonal body.
<Figure 1>
<Figure 3>
Liquid side piping
(Smaller Dia.)
Gas side piping
(Bigger Dia.)
Connecting wire
Drain hose
Backward
Connection pipe
Downward
Sideways
Forward
Putty or insulating material
(produced locally)
<Figure 2>
Knock-out
Base pan
Installation Manual 31
Flaring Work and Connection of Piping
Branch
[unit:mm]
Model
Gas Pipe
Liquid Pipe
Ø19.05
Ø19.05
PMBL5620
Ø9.52
Ø9.52
Ø9.52
Ø19.05
Y branch
A To Outdoor Unit
B
A
B To BD Unit
• Ensure that the branch pipes are attached horizontally or vertically (see the diagram
below.)
Horizontal
plane
Facing upwards
Within +/- 10
A
Viewed from point A
in direction of arrow
• Branch pipe should be insulated with the insulator in each kit.
Tape
(field supply)
Insulator
(included with kit)
Insulation
32 Multi Air Conditioner
Liquid and gas
pipe joints
Insulator for
field piping
Flaring Work and Connection of Piping
• This unit may be installed suspended from the ceiling or mounted on the wall.
• This unit may only be installed horizontally , as shown in the diagram below.(Side B is facing up)
However, it may be freely installed in any direction forward or back, and to the sides.
• Be sure to leave a 600mm square opening for service and inspection as shown in the diagram
below, for both ceiling - suspended installation and wall-mounted installation.
• This unit "does not require drain treatment" as it uses internal foam treatment as low-pressure
piping insulation.
• Service direction is the side B and C
• The piping for the indoor unit may be led around in direction A
• The inclination of side B must be within ±5 degrees forward or back or to the sides.
Unit : mm(inch)
Ø9.52(3/8)
337(13 9/32)
A
250(9 27/32)
298(11 23/32)
Ø19.05(3/4)
245(9 21/32)
Suspension bolt pitch.
B
Cover Control
C
160(6 5/16)
Main Pipe
Min 400(15 3/4)
Min 100(3 15/16)
Min 30(1 3/16)
(Servicing space)
Min 300(11 13/16)
Min 400(15 3/4)
Min 300(11 13/16)
432(17)
Branch Pipe
Inspection opening
Installation Manual 33
ENGLISH
Installation
Flaring Work and Connection of Piping
Installation of The Main Unit
NOTICE
:
• This unit has two different installation types:
(1) Ceiling-suspended type and (2) wall-mounted
type.
• Choose the proper installation pattern according to
the location of installation.
• The installation location for printed wiring board can
be changed.
Follow the procedure specified in the "CONNECTING
THE WIRING" section to change the location.
(1) Ceiling-suspended type
(1) Ceiling-suspended type
(2) Wall-mountde type
Procedure
(1) Fix the furnished hanger metal with two screws.(4 locations
in total).
(2) Using an insert-hole-in- anchor, hang the hanging bolt.
(3) Install a hexagon nut and a flat washer (locally-procured)to
the hanging bolt as shown in the figure in the left, and lift the
main unit to hang on the hanger metal.
(4) After checking with a level that the unit is level, tighten the
hexagon nut.
* The tilt of the unit should be within ±5° in front/back and
left/right.
BD unit
Six-sided Nut
(M10 or M8)
15.00
Hanger metal
Flat washer
Hanging bolt
(M10 or M8)
(2) Wall-mounted type
Procedure
(1) Fix the furnished hanger metal with two screws.
(3 locations in total).
(2) After checking with a level that the unit is level, fix the
unit with the furnished wood screws.
* The tilt of the unit should be within ±5° in front/back and
left/right.
PE
PE
Screws(M5)
(locally procude)
* Block up the parts of hanger holes (2 places) by using
insulation PE after installing the hanger.
CAUTIONS
• Once a screw-hole on the main unit has had a screw hammered in, make sure to either hammer it again
or cover it with alumium tape.(This is to prevent condensation)
• Be sure to install the unit with the ceiling-side up.
• Do not install near bedrooms. the sound of refrigerant flowing through the piping may sometimes be audible.
34 Multi Air Conditioner
Connecting the Cable between Indoor Unit, Distributor Unit and Outdoor Unit
Connect the cable to the Indoor unit.
Connect the cable to the indoor unit by connecting the wires to the terminals on the control
board individually according to the outdoor unit connection. (Ensure that the color of the wires
of the outdoor unit and the terminal No. are the same as those of the indoor unit.)
The ground wire should be longer than the common wires.
The circuit diagram is not subject to change without notice.
When installing, refer to the electrical diagram behind the front panel of Indoor Unit.
The wiring for the outdoor unit can be found on the inside of the Outdoor Unit control cover.
RECOMMENDATION:
• The circuit diagram is subject to change without notice.
• Be sure to connect wires according to the wiring diagram.
• Connect the wires firmly, so that they can not be pulled out easily.
• Connect the wires according to color codes by referring to the wiring diagram.
RECOMMENDATION: Provide a
circuit breaker between power
source and the outdoor unit as
shown below.
Outdoor Unit
Capacity Power source Fuse or breaker
Capacity
(Btu/h class)
18/24k
1ø,208/230V
20A
36k
54k
1ø,208/230V
1ø,208/230V
Main power source
Air
Conditioner
Circuit Breaker
Use a circuit breaker
or time delay fuse.
25A
40A
RECOMMENDATION: The power cord connected to the outdoor unit should
comply with the following specifications: NRTL Recognized(for example, UL or
ETL recognized and CSA certified).
n Power supply cable
Line voltage
(208/230V)
GN
/YL
(25 20m
/32 m
inc
h)
n Connecting cable
GN
/YL
(25 20m
/32 m
inc
h)
As always, final wire selection is governed by local codes
and should be installed by a licensed professional contractor.
18/24kBtu/h
36kBtu/h
54kBtu/h
The minimum recommended wire size
AWG 14-3
AWG 12-3
AWG 8-3
The power connecting cable between the outdoor and indoor units must comply with the following specifications:
NRTL Recognized (for example, UL or ETL recognized and
CSA certified).
AWG 18-4 is the minimum recommended wire size,
however, the selected conductors must comply with local
codes and be suitable for installation in wet locations.
RECOMMENDATION: When using separate wires as the power cord, please secure
separate wires in the control box panel using tie wraps to hold all wires in place.
Installation Manual 35
ENGLISH
Connecting the Cable between Indoor Unit, Distributor Unit and Outdoor Unit
Connecting the Cable between Indoor Unit, Distributor Unit and Outdoor Unit
Connect the cable to the Distributor unit.
• Connect refrigerant pipes and connection wires to the appropriate ports maked with matching
alphabets (A, B and C) on this unit.
• Follow the instructions on the wiring nameplate to connect the connection wires of indoor/outdoor
units to terminal board numbers.(1, 2 and 3) Always fix each ground wire separately with a ground
screw.(See the figure below.)
• After completing the wiring, fix the outer coating of wires securely with wire clamps. The wire
clamp on indoor unit side is furnished. Follow the procedure below to install.
• Refer to the circuit diagram on the control cover inside outdoor unit.
NOTICE :
The terminal board numbers are arranged from top to bottom in order of 1, 2 and 3.
In Case of 3 rooms
Warning
A room
Do not use tapped
wires, stand wires,
extensioncords, or starbust
connections, as they may
cause overtheating,
electrical shock, or fire.
A
B room
B
C room
C
CN-PWR
Connection wire for indoor units
(AWG 18-4)
Connection wire for outdoor units
(AWG 16-4)
(1) Remove the control cover. Loosen the two
screws, and slide the cover in the direction
of the arrow.
(2) Pull out connection cable through conduit.
After conduit to the panel, fix nut to the
opposite side of panel. Pass the connection
cabel through the hole.
Conduit (field supply)
Lock nut (field supply)
36 Multi Air Conditioner
(3) Perform wiring with reference the wiring diagram
on a control cover of outdoor unit. Allow 300
mm(11 13/16 inch) for the pulling-out section of
harness. Fix the wires completely with wire
clamps(4 locations).
(4) Put in the cover in the direction of the arrow
then tighten the screws.
Connecting the Cable between Indoor Unit, Distributor Unit and Outdoor Unit
ENGLISH
Connect the cable to the Outdoor unit.
1. Remove the control cover from the unit by loosening the screw.
Connect the wires to the terminals on the control
board individually as the following.
Power
supply cable
Conduit
hole
2. Secure the cable onto the control board with the
holder (clamper).
Connecting cable
(to the indoor unit)
3. Re-attach the cover control to the original position using the screws.
18kBtu/h class
24kBtu/h class
36 kBtu/h class
54 kBtu/h class
Indoor Unit Terminal Block Indoor Unit Terminal Block Indoor Unit Terminal Block Indoor Unit Terminal Block
A Unit
B Unit
C Unit
D Unit
Indoor Unit Terminal Block Indoor Unit Terminal Block Indoor Unit Terminal Block Indoor Unit Terminal Block
E Unit
F Unit
G Unit
H Unit
1(L1) 2(L2)
1(L1) 2(L2)
3
L(L1) N(L2) S
A Room
1(L1) 2(L2)
3
1(L1) 2(L2)
L(L1) N(L2) S
B Room
3
1(L1) 2(L2)
3
L(L1) N(L2) S
L(L1) N(L2) S
C Room
D Room
L(L1)
N(L2)
3
1(L1) 2(L2)
L(L1) N(L2) S
3
1(L1) 2(L2)
L(L1) N(L2) S
A Room
B Room
S
3
L(L1) N(L2) S
3
L(L1) N(L2) S
C Room
L(L1)
BD Unit (A)
1(L1) 2(L2)
D Room
N(L2)
S
BD Unit (B)
L1
L2
1(L1)
2(L2)
BD Unit (A)
3(A)
1(L1)
2(L2)
3(B)
BD Unit (B)
Installation Manual 37
Connecting the Cable between Indoor Unit, Distributor Unit and Outdoor Unit
NOTICE
:
1. Use connection cable NRTL(UL, ETL, CAS…) listed and stranded copper(4) THHN conductors,
sunlight (UV) resistant ROHS compliant PVC jacket 600V direct burial listed, approved for wet
conditions. Temperature rated for –20℃(-4℉) to 90℃(194℉). And this cable should be enclosed
in conduit.
WARNING:
• Be sure to comply with local and national codes while running the wire from the indoor unit to the
outdoor unit(size of wire and wiring method, etc).
• Every wire must be connected firmly.
• No wire should be allowed to touch refrigerant tubing, the compressor or any moving parts.
• The communication wirings of air conditioner should be separate and isolated from external deviceʼs electric wiring such as computers, elevator, radio & Television broadcasting facilities, as
well as medical imaging offices.
38 Multi Air Conditioner
Connecting the Cable between Indoor Unit, Distributor Unit and Outdoor Unit
(1) Remove the side panel and knockouts of conduit
panel. (for low voltage line)
(2) Pull out connection cable through conduit.
(3) After conduit to the panel, fix nut to the opposite
side of panel.
(4) Pass the connection cabel through the hole.
(5) Properly connect the cable on the terminal block.
(6) Fix the connection cable with cord clamp provided on the unit not to have strain at the terminal when the connection cable is pulled
outside up to a 35 pound weight
WARNING: Loose wiring may cause
the terminal to overheat or result in
unit malfunction. A fire hazard may
also exist. Therefore, be sure all
wiring is tightly connected.
ENGLISH
Connection method of the connecting cable(Example)
Conduit
(filed supply)
Lock nut
(field supply)
Indoor Unit A
Indoor Unit B
Indoor Unit C
Indoor Unit D
Power supply cable
(1Ø, 208/230V)
Conduit
hole
Connecting cable
(1Ø, 208/230V)
When connecting each power wire to the corresponding terminal, follow instructions "How to
connect wiring to the terminals" and fasten the
wire tightly with the fixing screw of the terminal
plate.
How to connect wiring to the terminals
Power supply cable
Strand wire
Strip 10 mm(3/8")
◼ For strand wiring
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation to expose
the strand wiring about 10 mm(3/8").
(2) Using a screwdriver, remove the terminal
screw(s) on the terminal plate.
(3) Using a round terminal fastener or pliers, securely clamp each stripped wire end with a
round terminal.
(4) Position the round terminal wire, and replace
and tighten the terminal screw using a screwdriver.
Round
terminal
Connecting Cable
Loosening the
terminal block
screw
Fastening the
wire tightly
Connecting cable
Installation Manual 39
Checking the Drainage, Insulating the Pipe and Special Piping Applications
Checking the Drainage, Insulating the Pipe and Special Piping Applications
Checking the drainage
1. Remove the Air Filter.
2. Check the drainage.
• Spray one or two glasses of water upon the
evaporator.
• Ensure that water flows drain hose of indoor
unit without any leakage.
h The figure can be changed according to model.
Insulating the Pipe and Special Piping Applications
Insulate the piping by wrapping the
connecting portion of the indoor unit
with insulation material and secure it
with two kinds of vinyl tape.
• If you want to connect an additional drain hose,
the end of the drain outlet should be routed
above the ground. Secure the drain hose appropriately.
Seal a small opening
around the pipings
with gum type
sealer.
Taping
Drain hose
Pipings
Plastic
band
In cases where the outdoor unit is installed below the indoor unit perform
the following:
1. Tape the piping, drain hose and connecting
cable from down to up.
2. Secure the taped piping along the exterior
wall using saddle or equivalent.
In cases where the Outdoor unit is
installed above the Indoor unit perform the following.
1. Tape the piping and connecting cable from
down to up.
2. Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
3. Secure the piping onto the wall using a saddle
or equivalent.
40 Multi Air Conditioner
Connecting
cable
Power supply
cord
• Trap is required to prevent water from entering
into electrical parts.
Seal a small opening
around the pipings
with gum type sealant.
Trap
Trap
Air Purging and Evacuation
Air and moisture remaining in the refrigerant system have undesirable effects as indicated below.
1. Pressure in the system rises.
2. Operating current rises.
3. Cooling(or heating) efficiency drops.
4. Moisture in the refrigerant circuit may freeze and block capillary tubing.
5. Water may lead to corrosion of parts in the refrigeration system.
Therefore, the indoor/outdoor unit and connecting tube must be checked for leaks, and vacuumed
to remove incondensible gas and moisture in the system.
Leak Checking
Preparation
• Check that each tube(both liquid and gas side
tubes) between the indoor and outdoor units have
been properly connected and all wiring for the test
run has been completed. Remove the service
valve caps from both the gas and the liquid sides
on the outdoor unit. Check that both the liquid and
the gas side service valves on the outdoor unit are
kept closed at this stage.
Leakage test
1. Do a leakage test of all joints of the
tubing(both indoor and outdoor) and both gas
and liquid side service valves with soap bubbles.
Bubbles indicate a leak. Be sure to wipe off
the soap with a clean cloth.
2. After the system is found to be free of leaks,
relieve the nitrogen pressure by loosening the
charge hose connector at the nitrogen cylinder. When the system pressure is reduced to
normal, disconnect the hose from the cylinder.
• Connect the manifold valve(with pressure gauges)
and dry nitrogen gas cylinder to this service port
with charge hoses.
CAUTION: Be sure to use a
manifold valve for leak testing.
The high side manifold valve must
always be kept closed.
• Pressurize the system to no more than 550
P.S.I.G. with dry nitrogen gas and close the
cylinder valve when the gauge reading
reached 550 P.S.I.G. Next, test for leaks with
liquid soap.
Indoor unit
Manifold valve
Lo
Hi
Pressure
gauge
Outdoor unit
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
CAUTION: To avoid nitrogen entering the refrigerant system in a liquid
state, the top of the cylinder must be higher
than its bottom when you pressurize the
system. Usually, the cylinder is used in a
vertical standing position.
: Leakage testing shoud be done for
each indoor unit connection set, separately.
NOTICE
h The figure can be changed according to model.
Installation Manual 41
ENGLISH
Air Purging and Evacuation
Air Purging and Evacuation
Evacuation
1. Connect the charge hose end described in
the preceding steps to the vacuum pump to
evacuate the tubing and indoor unit.
Confirm the "Lo" knob of the manifold valve is
open. Then, run the vacuum pump.
The operation time for evacuation varies with
tubing length and capacity of the pump.
The following table shows the time required
for evacuation.
Indoor unit
Manifold valve
Lo
Outdoor unit
Hi
Pressure
gauge
Open
Open
Required time for evacuation when 30 gal/h
vacuum pump is used
If tubing length is less If tubing length is longer
than 10m (33 ft)
than 10m (33 ft)
Less than 0.5 Torr
Less than 0.5 Torr
2. When the desired vacuum is reached, close
the "Lo" knob of the manifold valve and stop
the vacuum pump.
Vacuum pump
Finishing the job
1. With a service valve wrench, turn the valve
stem of liquid side valve counter-clockwise to
fully open the valve.
2. Turn the valve stem of gas side valve counterclockwise to fully open the valve.
3. Loosen the charge hose connected to the gas
side service port slightly to release the pressure, then remove the hose.
4. Replace the flare nut and its bonnet on the
gas side service port and fasten the flare nut
securely with an adjustable wrench. This
process is very important to prevent leakage
from the system.
5. Replace the valve caps at both gas and liquid
side service valves and fasten them tight.
This completes air purging with a vacuum pump.
The air conditioner is now ready for test running.
NOTICE
: Repeat evacuation procedure for each
indoor unit.
42 Multi Air Conditioner
h The figure can be changed according to model.
Charging
n If installed total piping length is more than standard total length, additional refrigerant charging is
necessary.
Below standard total piping length, additional refrigerant charging is not required.
Multiple Piping Models
Unit:m(ft)
Standard Total Piping
Max total length of all
Outdoor Unit CaMax length of each Min length of each Additional Refrigerant
pipes (A+B)/(A+B+C)/
Length (No Add`l repacity (Btu/h class)
pipe (A/B/C/D)
pipe (A/B/C/D)
Unit : g/m (oz/ft)
(A+B+C+D)
frigerant)
18k
50(164)
25(82)
3(9.8)
20(0.22)
15(49.2)
24k
75(246)
25(82)
3(9.8)
20(0.22)
22.5(74)
36k
75(246)
25(82)
3(9.8)
20(0.22)
30(98.4)
Distributor Type Model
Unit:m(ft)
Main Piping Length
Branch Piping Length
Outdoor Unit
Capacity
(Btu/h class)
Standard Length
Additional
Refrigerant
Unit : g/m (oz/ft)
Standard
Length
Additional
Refrigerant
Unit : g/m (oz/ft)
54k
5(16.4)
50(0.55)
5(16.4)
20(0.22)
Important:
If you are ever uncertain of the unit charge, reclaim, evacuate and weigh in the correct charge using
the charge amount specified on the Unit`s specification label.
Multiple Piping Models
Additional charge(oz ) = (Total Installation Piping Length-Standard Total Piping Length) x 0.22
a
9k
b
9k
c
9k
EX) A3UW24GFA0
Each branch pipe
a=82ft
b=16ft
c=49ft
Additional Charge
= {(82+16+49)-98.4} x 0.22 = 10.69 oz
Installation Manual 43
ENGLISH
Charging
Charging
Distributor type Models
Additional charge (oz) = (( Total Main piping Length - Main Standard Length ) x 0.55
+ (A Room Branch Length – Standard Length ) x 0.22
+ (B Room Branch Length – Standard Length ) x 0.22
+ (C Room Branch Length – Standard Length ) x 0.22 +.. )
- CF(Correction Factor) x 3.53
h CF = Max. number of connectable indoor unit – Total number of connected indoor unit
• Total main pipe(A+B+C)=98ft
• Each branch pipe
a=33ft
b=26ft
c=16.4ft
d=10ft
e=33ft
Ex) A8UW54GFA0
A
A
C
a
b
c
18k
9k
9k
B
d
e
9k
18k
v Additional Charge
= ((98-16.4)×0.55 + (33-16.4)×0.22
+ (26-16.4)×0.22 + (16.4-16.4)×0.22
+ (10-16.4)×0.22 + (33-16.4)×0.22)
- (8-5)×3.53 = 42.3oz
h If the total additional charge value after calculation comes out to be negative, then do not consider
additional charge.
44 Multi Air Conditioner
Installation PI485
ENGLISH
Installation PI485
Fix the PI485 PCB as shown in Fig.
Detailed installation method refer to PI485 Installation Manual.
18k Btu/h, 24k Btu/h
36kBtu/h
where
This label is should be applied in the location
installed.
LGAP(Sub PCB for Central Controller is
the LGAP.
Please connect the wire after installing
54kBtu/h
Screw Hole
Gateway.
of PI485
for installation
the space
This is
PI485
(Accessory)
after installing
the wire
connect
Please
Gateway.
Screw Hole
2
MEZ3017180
Installation Manual 45
Test Running
Test Running
- Check that all tubing and wiring have been properly connected.
- Check that the gas and liquid side service valves are fully open.
Prepare remote control
Remove the battery cover by pulling it according
to the arrow direction.Insert new batteries making
sure that the (+) and (–) of battery are installed
correctly. Reattach the cover by pushing it back
vinto position.
NOTICE
Bolt
:
• Use 2 AAA(1.5volt) batteries. Do not use rechargeable
batteries.
• Remove the batteries from the remote control if the system is not going to be used for a long time.
Tubing connection
Evaluation of the performance
Operate unit for 15~20 minutes, then check the system refrigerant charge:
- Measure the pressure of the gas side service valve.
- Measure the temperature of the intake and discharge of air.
- Ensure the difference between the intake temperature and the discharge is more than 8°C.
- For reference, the gas side pressure of optimum condition is as below.(Cooling)
Refrigerant
Outside ambient TEMP.
The pressure of the
gas side service
valve.
R410A
35°C (95°F)
8.5~9.5kg/cm2G
(120~135 P.S.I.G.)
NOTICE
:
If the actual pressure are higher than shown, the system is most likely over-charged, and charge
should be removed. If the actual pressure are lower than shown, the system is most likely undercharged, and charge should be added. The air conditioner is now ready for use.
Intake temperature
Discharge air
Intake temperature
Discharge air
Discharge
temperature
46 Multi Air Conditioner
Intake temperature
Discharge air
Discharge
temperature
Discharge
temperature
Function
ENGLISH
Function
Dip S/W Setting
If you set the Dip Switch when power is on, the change in setting is not applicable. The changing setting is enabled only when Power is reset.
Dip Switch
Function
1 2 3 4
Normal Operation (No Function)
Forced Cooling Operation
Wiring Error Check
Saving Power Consumption (Step 1)
Saving Power Consumption (Step 2)
Mode Lock (Cooling)
Mode Lock (Heating)
Night Quiet Mode (Step 1)
Night Quiet Mode (Step 2)
Mode Lock (Cooling) + Night Quiet Mode (Step 1)
Mode Lock (Cooling) + Night Quiet Mode (Step 2)
Mode Lock (Cooling) + Saving Power Consumption (Step 1)
Mode Lock (Cooling) + Saving Power Consumption (Step 2)
Mode Lock (Heating) + Saving Power Consumption (Step 1)
Mode Lock (Heating) + Saving Power Consumption (Step 2)
WARNING: When you set the dip switch, you should turn off the circuit
breaker or shut the power source of the product down.
CAUTION
• Unless the applicable dip switch is set properly, the product may not
work.
• If you want to set a specific function, request that the installer sets the
dip switch appropriately during installation.
Installation Manual 47
Function
18/24(1Ø) kBtu/h
36(1Ø) kBtu/h
SW01N
DIP-SW
54(1Ø) kBtu/h
DIP SW2
Forced Cooling Operation
Adding the refrigerant in winter.
Setting Procedure
1. Set the Dip Switch as follow after shutting the power source down.
2. Reset the power.
3. Check that the Red LED of PCB is on during work. (The indoor unit is operated by force.)
4 Add the specific amount of refrigerant.
CAUTION
• When the green LED of PCB is on, compressor is going to be off because
of low pressure.
• You should return the Dip Switch to operate normally after finishing the
operation.
48 Multi Air Conditioner
Function
ENGLISH
Wiring Error Check
You can check whether or not the wiring is correct.
Setting Procedure
1. Set the Dip Switch as follow after shutting the power source down.
2. Reset the power.
3. Check that the Re and Green LED of PCB are on during work. (The indoor unit is operated by force.)
4. If the wiring is correct, the Green LED will light up.
If the wiring is wrong, display as below
(Display only wrong connection.)
3
2
LED1
• Red LED : Piping Number
(Red)
• Green LED : Wiring Number (Room)
1sec
Example)
If the Red LED blinks twice and the Green LED
blinks 3 times, 2nd pipe is connected to 3rd room.
1sec
3
2
LED1
(Green)
1sec
1sec
5. You should return the Dip Switch to operate normally after finishing wiring error check.
CAUTION
• If Indoor unit doesnʼt communicate to outdoor Unit, function could not be
operated correctly.
• Only the wrong wiring connection is displayed. You should change connection correctly to operate the product.
• If Outdoor and Indoor temperature is too low in winter, the wiring error
check function will not be operated.
(Red LED is lighting)
Saving Power Consumption
Saving Power Consumption operation is the function which
enables efficient operation by lowering the maximum power
consumption value.
Power
consumption
and current
Nomal
Time
Setting Procedure
1 Set the Dip Switch as follow after shutting the power
source down.
2 Reset the power.
Step 1
Step 2
Installation Manual 49
Function
Saving Power Consumption Current level.
Phase
Model
Step1(A)
Step2(A)
1Ø
36k
13
11
18/24k
9
8
54k
26
22
Saving Power Consumption with Mode Lock.
Saving Power
Consumption (step 1)
+ Mode Lock (Cooling)
Saving Power
Consumption (step 1)
+ Mode Lock (Heating)
Saving Power
Consumption (step 2)
+ Mode Lock (Cooling)
Saving Power
Consumption (step 2)
+ Mode Lock (Heating)
Night Quiet Mode
Night Quiet Mode operation lowers the noise level of the outdoor unit by changing the comp frequency and fan speed. This function is operated all night long.
Setting Procedure
1. Set the Dip Switch as follow after shutting the power source down.
h Noise level :Step 1 > Step 2
Step 1
2. Reset the power.
Step 2
Night Quiet Mode with Mode Lock.
Mode Lock (Cooling)
+ Night Quiet Mode (step 1)
Mode Lock (Cooling)
+ Night Quiet Mode (step 2)
CAUTION
• If comp frequency and fan speed are down, the cooling capacity may decrease accordingly.
• This function is only available for Cooling Mode.
• If you want to stop the Night Quiet Mode, Change the Dip Switch.
• If operating indoor unit is set by the fan speed “Power”, Night Quiet
Mode will be stopped until fan speed “Power” is changed.
50 Multi Air Conditioner
Function
ENGLISH
Mode Lock
Setting Procedure
1. Set the Dip Switch as follow after shutting the power source down.
Only Cooling Mode
Only Heating Mode
2. Reset the power.
Mode Lock with Night Quiet Mode
Mode Lock (Cooling)
+ Night Quiet Mode
(step 1)
Mode Lock (Cooling)
+ Night Quiet Mode
(step 2)
Saving Power Consumption with Mode Lock.
Mode Lock (Cooling)
+ Saving Power
Consumption (step 1)
Mode Lock (Heating)
+ Saving Power
Consumption (step 1)
Mode Lock (Cooling)
+ Saving Power
Consumption (step 2)
Mode Lock (Heating)
+ Saving Power
Consumption (step 2)
Installation Manual 51
Function
PCB Display(18/24k Model Only)
It is useful to check the cycle data without LGMV.
Operating Method
Whenever you push the Tact Switch, the cycle information will be shown as below.
h After 1page is displayed, subsequently 2page is displayed.
Tact S/W
Item
18/24k
Display
Example
1page
2page
1 time
Low Pressure
890kpa
ʻLPʼ
ʼ 89ʼ
2 time
Hi Pressure
2900kpa
ʻHPʼ
ʻ290ʼ
3 time
Discharge Temp.
85°C
ʻDSʼ
ʼ 85ʼ
4 time
Cond Out Temp.
-10°C
ʻCSʼ
ʻ-10ʼ
5 time
Suction Temp.
-10°C
ʻSSʼ
ʻ-10ʼ
6 time
ODU Air Temp.
-10°C
ʻASʼ
ʻ-10ʼ
7 time
Current
15A
ʻAʼ
ʻ 15ʼ
8 time
Voltage
230V
ʻVʼ
ʻ230ʼ
9 time
Comp Hz
100Hz
ʻFʼ
ʻ100ʼ
10 time
DC Link Voltage
230V
ʻdcʼ
ʻ230ʼ
TACT-SW1
WARNING : When you push the Tact Switch, use the material non-conducting electricity.
52 Multi Air Conditioner
Combination indoor units
ENGLISH
Combination indoor units
The indoor units connectable to the outdoor unit are shown below
Category
Chassis
2.1(7)
Wall mounted
SB
2.6 (9)
Model names
Capacity, kW(kBtu/h Class)
3.5 (12)
4.2(15)
5.3 (18)
SB
7.03 (24)
18k
24k
36k
54k
Connectable Combination
10.6 (36)
AMNW07GDBL1 AMNW09GDBL1 AMNW12GDBL1 AMNW15GDBL1
[LMN077HVT] [LMN097HVT] [LMN127HVT] [LMN157HVT]
AMNW18GDCL1 AMNW24GDCL1
[LMN187HVT] [LMN247HVT]
SC
ART COOL Mirror
Outdoor Unit Capacity (Btu/h class)
AMNW09GDBR1 AMNW12GDBR1
[LMAN097HVT] [LMAN127HVT]
AMNW18GDCR1
[LMAN187HVT]
SC
O
O
O
O
18K(O)
O
O
O
O
O
O
O
O
O
O
O
ART COOL Gallery
SF
AMNW09GAF11 AMNW12GAF11
[LMAN097HVP] [LMAN127HVP]
O
O
O
O
Ceiling
cassette
TR
AMNW07GTRA0 AMNW09GTRA0 AMNW12GTRA0
[LMCN077HV] [LMCN097HV] [LMCN125HV]
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
4-way
AMNW18GTQA0
[LMCN185HV]
TQ
Ceiling
concealed
duct
Low static
pressure
(Slim)
L1
L2
High Static
pressure
Vertical AHU
NOTICE
AMNW09GL1A0
[LMDN096HV]
AMNW12GL2A0
[LMDN126HV]
AMNW18GL2A0
[LMDN186HV]
BG
AMNW24GBGA0 AMNW36GBGA0
[LMHN240HV] [LMHN360HV]
24K(O)
O
O
NJ
AMNW24GNJA0 AMNW36GNJA0
[LMVN240HV] [LMVN360HV]
24K(O)
O
O
: 1. The total capacity(in Btu/h unit) of connected indoor unit models represents the total sum of the figures expressed in the indoor model name.
2. Combinations in which the total capacity of the connected indoor units exceeds the capacity of the outdoor
unit will reduce the capacity of each indoor unit below the rated capacity during simultaneous operation.
Therefore, if circumstances allows, combine indoor units within the capacity of the outdoor unit
Installation Manual 53
54 Multi Air Conditioner
US
1. Please call the installing contractor of your product, as warranty service will be provided by them.
2. If you have service issues that have not been addressed by the contractor, please call 1-888-865-3026.
CANADA Service call Number # : (888) LG Canada, (888) 542-2623
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