LG | B42AWYU362.ANWBLAP | Installation guide | LG B42AWYN762.ANWBLAP Installation guide

LG B42AWYN762.ANWBLAP Installation guide
LG
LG
Air Conditioner
INSTALLATION MANUAL
Type : Ceiling Concealed Duct
IMPORTANT
• 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.
Ceiling Concealded Duct Air Conditioner Installation Manual
TABLE OF CONTENTS
Installation
Requirements
Required Parts
Required Tools
Safety Precautions ..............3
Introduction .........................6
Installation of Indoor,
• Four Type “A” screws
Outdoor Unit ........................7
• Connecting cable
Connecting Pipes to the
• Pipes: Gas side .....Ø15.88 ,Ø19.05mm
Indoor Unit .........................16 Liquid side .............Ø9.52mm
• Level
• Screw driver
• Electric drill
• Hole core drill (ø70mm)
• Flaring Tools set
• Insulated drain hose
• Insulation materials
• Additional Drain hose
Connecting Pipes to the
Outdoor Unit ......................18 (Inner Dia...............25mm)
Checking the Drainage .....19
Connecting Cables
between Indoor Unit and
Outdoor Unit ......................19
Air Purging and Evacuation ....22
Group Control....................24
Two Thermistor system ....24
Continuous Fan Operation ...25
External Static Pressure &
air Flow...............................26
Accessory Installation
Guide ..................................28
Installation guide at the
Seaside...............................34
2 Ceiling Concealed Duct Air Conditioner
• Screw driver
• Hexagonal Wrench (4mm/5mm)
• Gas-leak Detector
Safety Precautions
Safety Precautions
To prevent the injury of 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.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
■ The meanings of the symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that may cause harm to the
air conditioner.
NOTICE
This symbol indicates special notes.
■ Installation
Do not use a defective or
underrated circuit breaker.
Use this appliance on a
dedicated circuit.
• 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.
Do not modify or extend the
power cable.
• There is risk of fire or electric
shock.
For electrical work, contact the
Always ground the product.
dealer, seller, a qualified
electrician, or an Authorized
Service Center.
• Do not disassemble or repair the • There is risk of fire or electric
product. There is risk of fire or
shock.
electric shock.
Always install a dedicated
circuit and breaker.
• Improper wiring or installation
may cause fire or electric shock
Do not install, remove, or reinstall the unit by yourself
(customer).
• There is risk of fire, electric
shock, explosion, or injury.
Use the correctly rated breaker
or fuse.
• There is risk of fire or electric
shock.
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.
Installation Manual 3
Safety Precautions
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.
■ Operation
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.
Do not plug or unplug the
power supply plug during
operation.
• There is risk of fire or electric
shock.
Do not allow water to run into
electric parts.
Take care to ensure that power
cable could not be pulled out or
damaged during operation.
• There is risk of fire or electric
shock.
Do not touch(operate) the
product with wet hands.
• There is risk of fire or electrical
shock.
Do not place anything on the
power cable.
• There is risk of fire or electric
shock.
Do not place a heater or other
appliances near the power
cable.
• There is risk of fire and electric
shock.
Do not store or use flammable
gas or combustibles near the
product.
• There is risk of fire or failure of
product.
Do not use the product in a
tightly closed space for a long
time.
• Oxygen deficiency could occur.
When flammable gas leaks,
turn off the gas and open a
window for ventilation before
turn the product on.
• Do not use the telephone or turn
switches on or off.
There is risk of explosion or fire
If strange sounds, or small or
smoke comes from product. Turn the
breaker off or disconnect the power
supply cable.
• There is risk of electric shock or
fire.
Stop operation and close the window in
storm or hurricane. If possible, remove
the product from the window before the
hurricane arrives.
• There is risk of property damage,
failure of product, or electric
shock.
Do not open the inlet grill of the
product during operation.
(Do not touch the electrostatic
filter, if the unit is so equipped.)
• There is risk of physical injury,
electric shock, or product failure.
When the product is soaked
(flooded or submerged),
contact an Authorized Service
Center.
• There is risk of fire or electric
shock.
Be cautious that water could
not enter the product.
• It may cause There is risk of fire,
failure of the product, or electric shock.
Ventilate the product from time to time when
operating it together with a stove, etc.
• There is risk of fire or electric shock.
When the product is not be used for a long
time, disconnect the power supply plug or turn
off the breaker.
• There is risk of product damage or failure, or
unintended operation.
4 Ceiling Concealed Duct Air Conditioner
• There is risk of fire, electric shock,
or product damage.
Turn the main power off when cleaning or
maintaining the product.
• There is risk of electric shock.
Take care to ensure that nobody could step on
or fall onto the outdoor unit.
• This could result in personal injury and product
damage.
Safety Precautions
■ Installation
Always check for gas (refrigerant)
leakage after installation or repair
of product.
• Low refrigerant levels may cause
failure of product.
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.
Install the drain hose to
ensure that water is drained
away properly.
• A bad connection may cause
water leakage.
Use two or more people to lift
and transport the product.
• Avoid personal injury.
Keep level even when
installing the product.
• To avoid vibration or water
leakage.
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.
■ Operation
Do not expose the skin directly to cool air for
long periods of time.
(Don't sit in the draft.)
• This could harm to your health.
Do not block the inlet or
outlet of air flow.
• It may cause product failure.
Do not step on or put anyting
on the product. (outdoor
units)
• There is risk of personal injury
and failure of product.
Do not drink the water
drained from the product.
• It is not sanitary and could cause
serious health issues.
Use a soft cloth to clean. Do
not use harsh detergents,
solvents, etc.
• There is risk of fire, electric
shock, or damage to the plastic
parts of the product.
Do not touch the metal parts of
the product when removing the
air filter. They are very sharp!
• There is risk of personal injury.
Always insert the filter securely.
Do not insert hands or other objects
Clean the filter every two weeks or
through the air inlet or outlet while the
more often if necessary.
product is operated.
• A dirty filter reduces the efficiency • There are sharp and moving
of the air conditioner and could
parts that could cause personal
cause product malfunction or
injury.
damage.
Use a firm stool or ladder
when cleaning or maintaining
the product.
• Be careful and avoid personal
injury.
Do not recharge or disassemble the batteries. Do
not dispose of batteries in a fire.
• They may burn or explode.
Do not use the product for special purposes, such as
preserving foods, works of art, etc. It is a consumer air
conditioner, not a precision refrigeration system.
• There is risk of damage or loss of property.
Replace the all batteries in the
remote control with new ones
of the same type. Do not mix
old and new batteries or
different types of batteries.
• There is risk of fire or explosion
If the liquid from the batteries gets onto your
skin or clothes, wash it well with clean water. Do
not use the remote if the batteries have leaked.
• The chemicals in batteries could cause burns or
other health hazards.
Installation Manual 5
Installation Parts Provided
Introduction
Features
Air outlet vents
Air intake vents
Remote Controller
(Side)
(Rear)
Air intake
vents
Air outlet
vents
Control
over
Connecting
wire
Piping
rain hose
Connecting wire
Connection pipe
Drain hose
6 Ceiling Concealed Duct Air Conditioner
Installation of Indoor, Outdoor Unit
Installation of Indoor, Outdoor Unit
Selection of the best location
Indoor unit
Top view
(unit: mm)
Inspection hole
(450 x 450)
Control box
1000
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
450
Front
Front view
H
Outdoor unit
• If an awning is built over the unit to prevent
direct sunlight or rain exposure, be careful that
heat radiation from the condenser is not
restricted.
• There should not be any animals or plants
which could be affected by hot air discharged.
• Ensure the spaces indicated by arrows from
the wall, ceiling, fence or other obstacles.
(Unit : mm)
More than
300
Fe
ob nce
sta or
cle
s
Su
nro
of
More than
100
More than
600
More than
700
Installation Manual 7
Installation of Indoor, Outdoor Unit
Piping length and the elevation
Pipe Size
mm(inch)
Gas
Liquid
Capacity
(Btu/h)
Length A(m)
Elevation B(m)
Standard
Max.
Standard
Max.
*Additional
refrigerant(g/m)
42 k
15.88(5/8)
9.52(3/8)
7.5
50
5
30
60
48 k
15.88(5/8)
9.52(3/8)
7.5
50
5
30
60
55 k
15.88(5/8)
9.52(3/8)
7.5
50
5
30
60
Outdoor unit
Outdoor unit
Indoor unit
A
B
A
Outdoor unit
Oil trap
B
A
Indoor unit
B
Indoor unit
If the elevation is more than 5 m
between indoor and outdoor.
CAUTION:
• The Standard pipe length is 7.5 m and no need to additional charge of
the refrigerant to max 15 m. If the pipe length exceeds 15 m, need to
additional charge of the refrigerant which according to the table.
• If 55 kBtu/h Model is installed at a distance of 50m, 2,100g of refrigerant
should be added (50-15) x 60g = 2,100g
• Capacity is based on standard length and maximun allowance length is on
the basis of reliability.
• Improper refrigerant charge may result in abnormal cycle.
• Oil trap should be installed every 5~7 meters.
8 Ceiling Concealed Duct Air Conditioner
Installation of Indoor, Outdoor Unit
Indoor unit installation
■ Installation of Unit
Install the unit above the ceiling correctly.
I
K
J
H
L
CASE 1
POSITION OF SUSPENSION BOLT
GF
• Apply a joint-canvas between the unit and
duct to absorb unnecessary vibration.
• Apply a filter Accessory at air return hole.
(Unit:mm)
E D
Dimension
Capacity
(Btu/h)
42 k
48 k
55 k
A B C D E F G H
I
J K L
1362 1320 840 287 400 441 582 882 1373 315 366 40
1362 1320 840 287 400 441 582 1182 1373 315 366 40
1362 1320 840 287 400 441 582 1182 1373 315 366 40
C
B
A
M10 Nut
CASE 2
X4
(Local
M10 SP. washer X 4 supply)
M10 washer
X4
POSITION OF SUSPENSION BOLT
• 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.
M10 washer
X4
(Local
M10 SP. washer X 4 supply)
M10 Nut
X4
Installation Manual 9
Installation of Indoor, Outdoor Unit
CAUTION
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 10mm.
• The unit must be declined to the drain hose connected when finished installation.
1~3mm
Ceiling
CORRECT
INCORRECT
Drainage hole
Safety drain hole
Drainage hole
CAUTION FOR GRADIENT OF
UNIT AND DRAIN PIPING
Main drain hole
Lay the drain hose with a downward
inclination so water will drain out.
Thermal insulator
(Local supply)
1. Main drain
• Always lay the drain with downward inclination
(1/50 to 1/100).
Prevent any upward flow or reverse flow in any part.
• 10mm or thicker formed thermal insulator shall
always be provided for the drain pipe.
Drainage pipe
(Local supply)
Unit
Make sure to be closed.
Drainage hole
• Upward routing not
allowed
CORRECT
• Install the P-Trap (or U-Trap) to prevent
a water leakage caused by the blocking
of intake air filter.
INCORRECT
Applied U-Trap Dimension
2. Safety drain
• There is no need to
provide a trap for the
safty drain. If the
safty drain pipe is
connected to the Safety drain pipe
main drain pipe,
make the connection
below the trap on the
main drain pipe.
10 Ceiling Concealed Duct Air Conditioner
B
Main drain pipe
C
A ≥ 70mm
U-Trap
A
B ≥ 2C
C ≥ 2 x SP
SP = External
Pressure
(mmAq)
Ex) External Pressure = 10mmAq
A ≥ 70mm
B ≥ 40mm
C ≥ 20mm
Installation of Indoor, Outdoor Unit
• Drill the piping hole with 70mm dia, hole core
drill.
Indoor
WALL
Outdoor
• Piping hole should be slightly slant to the
outdoor side.
5~7mm
INSULATION, OTHERS
THERMAL INSULATION
Insulate the joint and tubes completely.
All thermal insulation must comply with local requirement.
INDOOR UNIT
Thermal insulator for refrigerant pipe
(Local supply) Thermal insulator for
piping(Local supply)
Union for liquid pipe
Refrigerant pipe and thermal
insulator(Local supply)
Hose crip for thermal insulator
(Local supply)
Overlap with thermal
insulator for piping.
Hose crip for thermal insulator(Local supply)
Make sure that there is no clearance here.
Thermal insulator for refrigerant pipe
(Local supply)
Union for gas pipe
REFRIGERANT PIPE
• Insulate and tape the gas piping.
CAUTION: Cutting line of
insulation must look upper
direction. Thickness of
insulation is 10mm or over.
NOTICE Recommended Insulation material
Meterial : FOAM PE
Thickness : 10mm
Density : less than 0.032 ±0.005(g/cm2)
Power cable
Tape
Gas pipe
Liquid pipe
Thermal insulator
Thermal conductivity : less than
0.03(kcal/m.hr.°C)
TEST AND CHECK
■ After all workings are finished, check the working and operation.
• Air distribution
• Drain
• Gas leakage
• Wiring
• Lock-bolt
Is the air circulation good?
Is the drainage smoothly and no sweating?
Is the piping connection correctly?
Is the wiring connection correctly?
Is the lock-bolt of compressor loosened?
Installation Manual 11
Installation of Indoor, Outdoor Unit
Install the remote control box and
cord correctly.
INSTALLATION OF REMOTE CONTROL BOX
POINT OF REMOTE CONTROLLER INSTALLATION
• Although the room temperature sensor is in the indoor unit, the remote control box should
be installed in such places away from direct sunlight and high humidity.
INSTALLATION OF THE REMOTE CONTROL BOX
ROUTING OF THE REMOTE CONTROL CORD
• Select places that is not splashed by
water.
• Select control position after receiving
customer approval.
• The room temperature sensor of the
thermostat for temperature control is built
in the indoor unit.
• This remote controller equipped with liquid
crystal display. If this position is higher or
lower, display is difficult to see.
(The standard height is 1.5m high)
• Keep the remote control cord away from
the refrigerant piping and the drain piping.
• To protect the remote control cord from
electrical noise, place the cord at least
5cm away from other power cables. (Audio
equipment, Television set, etc)
• If the remote control cord is secured to a
wall, provide a trap at the top of the cord to
prevent water droplets from running.
ELECTRICAL WIRING TO THE INDOOR UNIT
Remote controller
CN REMO
(Main board)
CN REMO
Make sure that wire and terminal
numbers are matched on unit side
and remote controller side.
The maximum length of the cord is 100m.
If the length of the cord exceeds 50m, use a wire size greater than 0.5mm2.
Put the installation paper on the place and
determine the position and height of the fixing
screws of the deluxe wired remote controller.
• Refer to the printed side of the installation
paper.
Wall
Installation paper
The position of the fixing screws
Remove the installation paper before
installing the remote controller so that
it can fit into the right place.
Fixing the
remote controller
Fixing the
connecting cable
* When installing the deluxe wired remote controller, do not install it so that it is buried to the wall.
(This can cause error in the temperature sensor)
* When installing multiple deluxe wired remote controllers horizontally in one location, leave a
minimum distance apart (20mm). (This can cause error in the temperature sensor)
* Do not install the cable with a distance of 50 m or longer. (This can cause communication error.)
* When installing the cable, check whether the connector between the remote controller and the
product is installed properly. The connector will not be connected when installed in opposite sides.
12 Ceiling Concealed Duct Air Conditioner
Installation of Indoor, Outdoor Unit
WIRED REMOTE CONTROLLER INSTALLATION
• Since the room temperature sensor is in the remote controller, the remote controller box should
be installed in a place away from direct sunlight, high humidity and direct supply of cold air to
maintain proper space temperature.
Install the remote controller about 5ft(1.5m) above the floor in an area with good air circulation
at an average temperature.
Do not install the remote controller where it can be affected by:
- Drafts, or dead spots behind doors and in corners.
- Hot or cold air from ducts.
- Radiant heat from sun or appliances.
- Concealed pipes and chimneys.
- Uncontrolled areas such as an outside wall behind the remote controller.
- This remote controller is equipped with a seven segment LED. display. For proper display of the
remote controller LED's, the remote controller should be installed properly as shown in Fig.1.
(The standard height is 1.5 m from floor level.)
yes
no
5feet
(1.5meters)
no
no
Fig.1 Typical locations for remote controller
Installation Manual 13
Installation of Indoor, Outdoor Unit
REFRIGERANT PIPING
Perform the work according to the Service Manual or
Installation Guide.
• Use two spanners when connecting the
refrigerant pipe to the unit.
• Make a bend with a radius as large as
possible.
• Perform air purge with R410A or vacuum
drying.
• When piping work is finished, check all
joints.
Flared connection (Union)
Use a seemliness tube
Indoor
Factory charged
Flared connection
(Service valve, Ball valve)
Outdoor
INSTALLATION OF OUTDOOR UNIT
Select a location that satisfies the following
conditions. Install the unit firmly in place.
■ Select the following location
• A place where the air conditioner can get good ventilation.
• A place where it shall not annoy the neighbors.
• A place where the unit shall be leveled and that can support the weight of unit and
withstand its vibrations.
■ Keep a maintenance space
Unit(mm)
Above 100
Outdoor unit
Above 300
Above 700
Above 600
Face of wall
14 Ceiling Concealed Duct Air Conditioner
Installation of Indoor, Outdoor Unit
Perform the electrical wiring work according to the
electrical wiring connection.
ELECTRICAL WIRING
• All wiring must comply with local
requirements.
• Select a power source that is capable of
supplying the current required by the air
conditioner.
• Use a recognized circuit breaker between
the power source and the unit. A
disconnection device to adequately
disconnect all supply lines must be fitted.
• Capacity of circuit breaker recommended by
authorized personnel only
Capacity(Btu/h)
Phase(Ø)
Circuit Breaker
42 k
1
35A
48 k
1
35A
55 k
1
35A
Circuit Breaker
Main
power source
Switch box
Outdoor
Indoor
A view
Main PCB
Motor PCB
A
Connection
cord between
the indoor unit
and the
outdoor unit
Remote
control cord
WIRING CONNECTION
Indoor unit
• Remove the side panel for electrical
connection between the indoor and
outdoor unit.
Control box cover
(On which the Electric
Wiring Connection is put)
• Use the cord clamper to fix the cord.
Outdoor unit
• Remove the side panel for wiring
connection.
• Use the cord clamper to fix the cord.
• Earthing work
- Case 1 :Terminal block of Outdoor
Unit have
mark.
• Connect the cable of diameter
1.6mm2 or more to the earthing
terminal provided in the control
box and do earthing.
- Case 2 :Terminal block of Outdoor
Unit don't have
mark.
• Connect the cable of diameter
1.6mm2 or more, to the panel of
control box, marked as
and
fasten with earth screw.
Control terminal
board
Main terminal
board
Cord
clamper
Side panel
Please check !!
Installation Manual 15
Connecting Pipes to the Indoor Unit
Connecting Pipes to the Indoor Unit
Preparation of Piping
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°
Cutting Tubes
• Use the accessory piping kit or the pipes
purchased locally.
• Measure the distance between the indoor and
the outdoor unit.
• Cut the pipes a little longer than measured
distance.
• Cut the cable 1.5m longer than the pipe length.
Pipe
Reamer
Point down
Burrs removal
• Completely remove all burrs from the cut cross
section of pipe/tube.
• 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.
Open-end wrench (fixed)
Putting nut on
Flare nut
• 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)
Torque wrench
Connection pipe
Indoor unit tubing
Handle
Flaring work
• Carry out flaring work using flaring tool as
shown below.
Outside Diameter
6.35 mm
9.52 mm
12.7 mm
15.88 mm
19.05 mm
"A"
1.1~1.3 mm
1.5~1.7 mm
1.6~1.8 mm
1.6~1.8 mm
1.9~2.1 mm
Firmly hold copper tube in a bar(or die) as
indicated dimension in the table above.
Bar
Bar
"A"
Yoke
Cone
Copper pipe
Clamp handle
Red arrow mark
Smooth all round
Inside is shiny without scratches
Check
= Improper flaring =
• Compare the flared work with figure.
• If flare is noted to be defective, cut off the
flared section and do flaring work again.
Even length
all round
16 Ceiling Concealed Duct Air Conditioner
Inclined Surface Cracked Uneven
damaged
thickness
Connecting Pipes to the Indoor Unit
Pipe bending
Annealed copper pipe with small diameter (ø6.35 or ø9.52) can be easily bent manually. In this case,
secure large R(radius) for the bend section and gradually bend pipe. If annealed copper pipe is large
in diameter (ø15.88 or ø19.05), bend pipe with bender. Use bender appropriate for the pipe
diameter.
Brazing
In refrigerant piping, bending (in particular, acute bending) must be minimized to reduce piping
resistance. Bending is, however, necessary in some places by virtue of the installation position of
devices auxiliary to the packaged air conditioner, or of the building structure, piping distance or
finishing appearance. If a more acute bend is required than that attainable by pipe bender, perform
brazing using ready-made elbow. Aside from this function, brazing also serves to connect straight
pipes, generally using ready-made sockets. While brazing, protect piping against heat with wet cloth
to avoid damaging valve packing or burning thermal insulator with burner heat. While brazing, blow
inert gas (nitrogen gas or carbonic gas) to prevent formation of oxidation film in copper piping;
otherwise, the refrigerant circuit will clog.
Refrigerant piping(Flare piping)
When connecting piping, be sure to keep piping dry(keep piping away from water), clean (keep
piping away from dust) and airtight (avoid refrigerant leakage).
When connecting piping on rainy days or making a through-hole in wall, take due care to prevent
water or plaster from entering piping.
Water enters
Plaster enters
CAUTION:
• This procedure is designed to prevent formation of oxidation film by
filling piping with inert gas. Note that excessive gas pressure will
generate pinholes at brazed points.
(Nitrogen gas: Supply pressure 0.05~0.1kg/cm2G)
• When supplying inert gas, be sure to open one end of piping.
Installation Manual 17
Connecting Pipes to the Outdoor Unit
Connecting Pipes to the Outdoor Unit
Connecting the pipes to the Outdoor unit
• Align the center of the pipings and sufficiently
tighten the flare nut with fingers.
Continuous
• 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
mm
inch
Ø6.35
1/4
Ø9.52
3/8
Ø12.7
1/2
Ø15.88
5/8
Ø19.05
3/4
Torque
kgf.m
1.8~2.5
3.4~4.2
5.5~6.6
6.3~8.2
9.9~12.1
Align the center of the piping and sufficiently
tighten the flare nut by hand.
• The installation piping is connectable in four
directions.(refer to figure 1)
Torque wrench
Outdoor unit
<Figure 3>
Liquid side piping
(Smaller Dia.)
• When connecting in a downward direction, knock out the
knockout hole of the base pan. (refer to figure 2)
Gas side piping
(Bigger Dia.)
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.
<Figure 1>
Connecting wire
Drain hose
Connection pipe
Putty or insulating material
(produced locally)
<Figure 2>
Backward
Forward
Downward
Sideways
18 Ceiling Concealed Duct Air Conditioner
Knock-out
Base pan
Connecting Cables between Indoor Unit and Outdoor Unit
Checking the Drainage
Checking the Drainage
• 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.
Connecting Cables between Indoor Unit and Outdoor Unit
Connecting cables to the Indoor Unit
■ 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
■ Heatpump Model
1
Terminals on the indoor unit
2
(220V-240V~)
3
1(L) 2(N)
Terminals on the outdoor unit
1
2
3
BR
BL
GN/YL
POWER SUPPLY
1Ø 220-240V 50Hz
CAUTION
The power cable connected to the outdoor unit should be
The connecting cable connected to the indoor unit and
complied withIEC 60245 or HD 22.4 S4 (Rubber insulated
outdoor unit should be complied with IEC 60245 or HD 22.4
cable,type 60245 IEC 66 or H07RN-F)
S4 (Rubber insulated cable,type 60245 IEC 66 or H07RN-F)
NORMAL CROSS-SECTIONAL AREA
GN
Capacity
42 kBtu/h
48 kBtu/h
55 kBtu/h
/YL
Phase(Ø) Area(mm2)
1
5.5
1
5.5
1
5.5
20
mm
NORMAL CROSS-SECTIONAL AREA
GN
Capacity
42 kBtu/h
48 kBtu/h
55 kBtu/h
/YL
Phase(Ø) Area(mm2)
1
1
1
1
1
1
20
mm
If the supply cable is damaged,it must be replaced by the manufacturer,its service agent or similarly qualified persons in order to avoid a hazard.
CAUTION: Make sure that the screws of the terminal fixed tightly.
Clamping of cables
• Arrange two power cables on the control panel.
• First, fasten the clamp with a screw to the inner boss of control panel.
• For the cooling model, fix the other side of the clamp with a screw strongly.
For connecting cable to the terminal block, put the 1.0mm2 cable(thinner cable) on the clamp and
tighten it with a plastic clamp to the other boss of the control panel.
• In Australia, the length of power supply cable measured from the entry of the power supply cable to
the middle of live pin on the power plug should be over 1.8m.
Installation Manual 19
Connecting Cables between Indoor Unit and Outdoor Unit
Connecting the cable to the Outdoor Unit
• Remove the side panel from the unit by loosing screws.
Connect the wires to the terminals on the control board individually as previous page.
• Secure the cable onto the control board with the holder (clamper).
• Refix the cover control to the original position with the screw.
Connecting cable terminal
Power cord terminal
Cord clamp
Cord clamp
Insulation
When connecting main power cable,
make sure the rubber bushes are
properly used in knock-out holes after
removing the Insulation.
CAUTION: After the confirmation of the above conditions, prepare the
wiring as follows:
1) Never fail to have an individual power specialized for the air conditioner. As for the method of wiring, be
guided by the circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from
vibrations to which the unit is subjected during the course of transportation. Check them and make
sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked on
the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the
normal function of a overload protection device.
• Proper starting power is not given to the compressor.
20 Ceiling Concealed Duct Air Conditioner
opening around
the pipings with
gum type
sealer. Indoor Unit and Outdoor Unit
Connecting Cables
between
Forming the piping
Form the piping by wrapping the
connecting portion of the indoor
unit with insulation material and
secure it with two kinds of vinyl
tape.
Seal a small
opening around
the pipings with
gum type sealant.
sealer.
Taping
Drain hose
• 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.
Pipings
Connecting
cable
Taping pipe
Power supply
cord
Pipe
Drain hose
Vinyl tape(narrow)
• Trap is required to prevent water from entering
into electrical parts.
Wrap with
vinyl tape(wide)
Seal a small opening
around the pipings
with gum type sealant.
sealer.
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 and electrical part.
3. Fix the piping onto the wall by saddle or
equivalent.
Trap
Seal a small opening
around the pipings
with gum
type sealer.
Trap
Trap
Installation Manual 21
Air Purging and Evacuation
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 leak tight, and
vacuumed to remove incondensible gas and moisture in the system.
Checking method
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 side
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.
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 leakage test.
If it is not available, use a stop valve for
this purpose. The "Hi" knob of the
manifold valve must always be kept
close.
• Pressurize the system to no more than 427
P.S.I.G. with dry nitrogen gas and close the
cylinder valve when the gauge reading
reached 427 P.S.I.G. Next, test for leaks with
liquid soap.
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.
22 Ceiling Concealed Duct Air Conditioner
Indoor unit
Outdoor unit
Manifold valve
Lo
Hi
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Air Purging and Evacuation
Soap water method
1. Remove the caps from 3-way valves.
2. Remove the service-port cap from the 3-way valve.
3. To open the liquid side 3-way valve turn the valve
stem counterclockwise approximately 90°, wait for
about 2~3 sec, and close it.
4. Apply a soap water or a liquid neutral detergent on
the indoor unit connection or outdoor unit
connections by a soft brush to check for leakage of
the connecting points of the piping.
5. If bubbles come out, the pipes have leakage
Outdoor unit
Gas side
3-way valve
(Close)
Liquid side
3-way valve
(Open)
Gas side
piping
Liquid side
piping
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 and Hi" 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
Outdoor unit
Required time for evacuation when 30 gal/h
vacuum pump is used
If tubing length is longer
If tubing length is less
than 10 m(33 ft)
than 10 m(33 ft)
30 min. or more
60 min. or more
0.5 torr or less
2. When the desired vacuum is reached, close the "Lo
and Hi" knob of the manifold valve and stop the
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 to test run.
Manifold valve
Lo
Digital vacuum
gage
Hi
Open
Open
Vacuum pump
Installation Manual 23
Group Control
Group Control
It operates maximum 16 units by only one wired remote controller,
and each unit starts sequentially to prevent overcurrent.
Main PCB
Indoor Unit 1
Indoor Unit 2
Terminal(Local Supply)
Block
Connector
Terminal(Local Supply)
Block
Connector
RED(12V)
YL(SIGNAL)
BR(GND)
RED(12V)
YL(SIGNAL)
BR(GND)
Main PCB
#1
YL(SIGNAL)
BR(GND)
YL(SIGNAL)
BR(GND)
Indoor Unit 16
Terminal(Local Supply)
Block
Connector
Main PCB
#2
....
YL(SIGNAL)
BR(GND)
Main PCB
#16
Connecting Cable(Local Supply)
....
Wired Remote
Controller
YL(SIGNAL)
BR(GND)
• Set the slide switch in the wired remote contorller as "SLAVE"
positon.(Figure1)
• If the main PCB is not directly connected to the wired remote controller,
set the option switch "6" in the mian PCB as "ON" position.(Figure2)
ON
1
2
3
4
5
6
7 8
Group Control
Remote Controller
S/W GR
1 2
1. Master
2. Slave
<Figure 1>
<Figure 2>
Two Thermistor system
Set the thermistor mode by pressing
,
,
Selected button
Main PCB
button in
Function
Operating the tempertature sensor in
the indoor unit(or remote sensor).
Operating the tempertature sensor in
the remote controller.
• Cooling mode: Operating lower temperature
sensor comparing the remote controller and
indoor unit(or remote sensor) temperature
• Heating mode: Operating higher temperature
sensor comparing the remote controller and
indoor unit(or remote sensor) temperature
• Set the thermistor mode of the sensor located in main active place.
Otherwise, do not work cooling and heating effiectively.
24 Ceiling Concealed Duct Air Conditioner
Continuous Fan Operation
Continuous Fan Operation
When need to set up the continuous fan operation, chage the option switch 4 in the PCB as
below guide line.
ON
1
2
3
4
5
6
7 8
Option Switch
Indoor PCB
Option Switch 4
Function
ON
Continuous Fan
Operation - ON
OFF
Continuous Fan
Operation - OFF
CAUTION:
• Continuous fan operation can cause unexpected cold air flow in hot
start mode or defrost mode.
• It is required to explain to the customer before setting this function.
Installation Manual 25
External Static Pressure & air Flow
External Static Pressure & air Flow
External Static
Pressure (Pa)
60
Capacity(Btu/h) step(HI/Med/Low)
Hi (48 CMM)
42 k
Med (42 CMM)
Low (36 CMM)
Hi (60 CMM)
48 k
Med (50 CMM)
55 k
Low (40 CMM)
NOTICE
90
110
130
150
Setting Remote Cotroller's Switch2
Low E.S.P Mode
High E.S.P Mode
Low E.S.P Mode
High E.S.P Mode
180
200
Setting RPM
120
114
108
127
120
113
Capacities are tested in the following conditions.
Static
Pressure
(Pa)
Voltage
(Phase/Volt)
60
Ø1/230 V
Air
Flow
Step
Piping
Length
High
7.5 m
Temperaure(°C DB/°C WB)
Cooling
Heating
Indoor
Outdoor
Indoor
Outdoor
27/19
35/24
20/15
7/6
• How to set Remote Controller's switch 2
S/W 2
Remote Controller
1 2 3
For Low E.S.P Mode
1. Low/Low E.S.P
2. Standard/high E.S.P
3. High/high E.S.P
For High E.S.P Mode
• How to set RPM
1
Press the
2
Press the
3
Set the volume of each air flow ( Lo→Med→Hi) by using the
button.
100 unit 10 unit
AUTO INDOOR
ZONE 1
ZONE 2
AUTO INDOOR
ZONE 1
ZONE 2
button.
button. Press the
button to select the air flow.
REMO
ZONE 3
REMO
ZONE 3
ZONE 4
(The value of E.S.P could be adjusted from 1 to 255.)
(The figure on the left shows when the strong wind’s ESP value
has been set to 127. 127 means 1270 RPM).
2TH
ZONE 4
4
26 Ceiling Concealed Duct Air Conditioner
If you press the
button one more time, the
E.S.P value will be set and the setting mode will
be unset.
Accessory Installation Guide
Accessory Installation Guide
Dry Contact(Only AC 24V)
• Fix dry contact on the indoor control box cover.
• Connect dry contact(CN-CC) to Indoor PCB(CN-CC) with
cable provided.
• Use the DC line hole when connecting the cable to indoor
PCB.(Figure 2).
• Connect CN-POWER to power supplier.(Only AC 24V).
• Connect CN-DRY to dry contact controller. (Power supplier
and dry contact controller are produced locally.)
• Tie the cables with the tie-wraps and clamps. (Figure 2).
• Refer to dry contact installation manual for detailed
installation method.
Indoor PCB
Control box
Dry contact
Dry contact
cover
Control box cover
POWER SUPPLY (AC 24V)
CN-POWER
C
N
I
C
C
Indoor PCB(DC)
CN-DRY
Screw
Dry contact
controller(DC)
<Figure 1>
Dry Contact
CN-CC
Indoor control box
<Figure 2>
Installation Manual 27
Accessory Installation Guide
PI485
• Fix PI485 to the bracket in the outdoor control box.(Figure 2)
• Connect PI485 to outdoor PCB and central controller with cable.(Figure 1,3)
- Connect CN-PWR to WCN_P(N) and WCN_P(L).
- Connect CN-OUT to CN_CENTRAL.
• Separate AC and DC line when connecting the cable to outdoor PCB.(Figure 3)
- Use the clip at the PCB case side.
• Tie the cables with the tie-wraps and clamps after intalling PI485.
• Refer to PI485 installation manual for detailed installation method
CN_PWR(AC)
Centroller
controller
connector(DC)
CN_OUT(DC)
PI485
<Figure 1>
AC line
DC line
PI485
PI485
Bracket
Bracket
(Space for PI485)
(Space for PI485)
CN_CENTRAL
CN_CENTRAL
PI485
PI485
Screw
Screw
Screw
Screw
WCN_P(N)
WCN_P(N)
WCN_P(L)
WCN_P(L)
<Figure 2>
<Figure 3>
28 Ceiling Concealed Duct Air Conditioner
Accessory Installation Guide
RF Remote Controller
• Connect Indoor PCB(CN-DISPLAY) to RF
remote controller with the cable provided.
• Use the DC line hole when connecting the
cable to Indoor PCB.
Indoor PCB
Double
coated
tape
Control box
• Fix the RF remote controller with adhesive
tape at your desired location.
RF remote
controller
Cable
• Tie the cables with tie-wraps and clamps after
intalling.
• Refer to RF remote controller Installation
manual for detailed installation metheod.
RF Remote controller
CN-DISPLAY
Installation Manual 29
Accessory Installation Guide
Damper Controller
• Open the cover of indoor unit control box and damper controller(Figure 1)
• Assemble the damper controller to cover which is seperated.
• Connect the lead wires between main PCB and damper controller.(Figure 2)
• Connect the power cord to damper controller and actuator.(Figure 2)
• Assemble the damper controller to indoor unit and then assemble cover of damper controller.
• Set the slide switch in the wired remote contorller as "1" positon.(Figure 3)
• Refer to damper controller Installation manual for detailed installation metheod.
Damper controller
Indoor PCB
Power
supply
Actuator Actuator Actuator Actuator
Figure 1
Figure 2
Zone type selection
1
2
Remote controller
1. Zone new
2. Zone old
S/W 1
Figure 3
(It is possible to use 2-position control actuator(on/off) or 3-position control actuator(on/off).)
30 Ceiling Concealed Duct Air Conditioner
Accessory Installation Guide
Remote Temperature Sensor
• After deciding where the remote temperature sensor is installed,
decide the location and height of the fixing screws.
(Interval between the screws : 60mm).
Fixing screws
60mm
• After removing the control box cover of the indoor unit,
remove the room temperature sensor in CN-ROOM of the main PCB.
• Insert the connector of remote sensor wire into CN-ROOM.
• Using the DC line hole when connecting the wire to Indoor PCB.
• For using the two thermistor fuction, the remote sensor should be installed from the wired remote
controller as far as possible.
• Refer to damper remote sensor manual for detailed installation metheod.
Connecting wire
Remote sensor
CN-ROOM
Installation Manual 31
Accessory Installation Guide
Two wired remote controller
• All wired remote controllers are displayed on identical information.
• Last used wired romote controller has priority on product's movement.
• Set one wired remote controller as master,the others as slave.<Figure 1>
• The thermistor mode is operated by the wired remote controller set as "master"
Indoor
PCB
Wired remote
controller
Wired remote
controller
Cable
Group Control
Remote Controller
S/W GR
1 2
1. Master
2. Slave
< Figure 1 >
CAUTION:
Two wired remote controllers should be same model name, otherwise it
can cause unexpected problems.
For example) Using PDRCUSA0 with PDRCUSA0 is proper.
Using PDRCUDB0 with PDRCUDB0 is proper.
PDRCUSA0 & PDRCUDB0 are improper.
32 Ceiling Concealed Duct Air Conditioner
Accessory Installation Guide
Simple Contact
• It can be used to turn the unit On/Off after getting the signal from external sources like timer, key-in
lock etc.
• This function is similar to the dry contact, but need to no additional accessory.
• Open the cover of indoor unit control box, connect the external source to the terminal block.
Timer
Timer
Indoor contol box
Installation Manual 33
Installation Guide at the Seaside
Installation Guide at the Seaside
CAUTION:
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. Otherwise it
needs additional anticorrosion treatment on the heat exchanger.
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 windbreak not to be exposed to the sea wind.
Windbreak
• It should be strong enough like concrete to prevent
the sea wind from the sea.
• The height and width should be more than 150% of
the outdoor unit.
Sea wind
• It should be keep more than 70 cm of space
between outdoor unit and the windbreak for easy
air flow.
3) Select a well-drained place.
1. If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment.
2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water
34 Ceiling Concealed Duct Air Conditioner
P/No.: MFL62541002
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising