LG AVNQ48GM2T1 User manual

INSTALLATION MANUAL
Ceiling Suspended Air conditioner
AIR
CONDITIONER
www.lg.com
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.
MFL70699801
Rev.00_051018
Copyright © 2018 LG Electronics Inc. All Rights Reserved.
ENGLISH FRANÇAIS
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2TIPS FOR SAVING ENERGY
ENGLISH
• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.
• Block sunlight with blinds or curtains while you are operating the air conditioner.
• Keep doors or windows closed tightly while you are operating the air conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period of time.
• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air
conditioner is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:
TIPS FOR SAVING ENERGY
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IMPORTANT SAFETY INSTRUCTIONS 3
ENGLISH
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product
WARNING
It can result in serious injury or death when the directions are ignored
CAUTION
It can result in minor injury or product damage when the directions are ignored
WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
• The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can result in equipment
malfunction, property damage, personal injury and/or death.
Installation
• Don’t use a power cable, a plug or a loose socket which is damaged.
- Otherwise, it may cause a fire or electrical shock.
• For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center.
- Do not disassemble or repair the product. There is risk of fire or electric shock.
• Always ground the product.
- There is risk of fire or electric shock.
• Install the panel and the cover of control box securely.
- There is risk of fire or electric shock.
• Always install a dedicated circuit and breaker.
- Improper wiring or installation may cause fire or electric shock.
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric shock.
• Do not modify or extend the power cable.
- There is risk of fire or electric shock.
• Do not let the air conditioner run for a long time when the humidity is very high and a door or a
window is left open.
- Moisture may condense and wet or damage furniture.
• Be cautious when unpacking and installing the product.
- Sharp edges could cause injury. Be especially careful of the case edges and the fins on the
condenser and evaporator.
• For installation, always contact the dealer or an Authorized Service Center.
- There is risk of fire, electric shock, explosion, or injury.
!
!
!
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4IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
• 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 store or use flammable gas or combustibles near the product.
- There is risk of fire or failure of product.
CAUTION
Installation
• Always check for gas (refrigerant) leakage after installation or repair of product.
- Low refrigerant levels may cause failure of product.
• Install the drain hose to ensure that water is drained away properly.
- A bad connection may cause water leakage.
• Keep level even when installing the product.
- To avoid vibration or water leakage.
• Do not install the product where the noise or hot air from the outdoor unit could damage the
neighborhoods.
- It may cause a problem for your neighbors.
• Use two or more people to lift and transport the product.
- Avoid personal injury.
• Do not install the product where it will be exposed to sea wind (salt spray) directly.
- It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator
fins, could cause product malfunction or inefficient operation.
!
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TABLE OF CONTENTS 5
ENGLISH
2TIPS FOR SAVING ENERGY
3IMPORTANT SAFETY INSTRUCTIONS
6PRODUCT PARTS
6INSTALLATION TOOLS
7INSTALLATION
7Indoor unit
8THE INDOOR UNIT INSTALLATION
9Open side-cover
10 Mounting the anchor nut and bolt
12 Indoor unit drain piping
12 Drain piping
12 Drain test
13 Heat insulation
13 Flaring Work
16 Wiring Connection
17 TEST RUNNING
19 INSTALLATION INSTRUCTIONS
19 Installer Setting - How to enter installer setting mode
20 Installer Setting - Installer Setting Code Table
21 Installer Setting - Setting Address of Central Control
21 Installer Setting - Checking Address of Central Control
TABLE OF CONTENTS
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6PRODUCT PARTS
ENGLISH
PRODUCT PARTS
INSTALLATION TOOLS
Air outlet vent
Air inlet vent
(inlet grille)
Air filters
(behind inlet grille)
Louver
Right side cover
Left side cover
Figure FigureName
Screw driver
Electric drill
Measuring tape, Knife
Hole core drill
Spanner
Torque wrench
Multi-meter
Hexagonal wrench
Ammeter
Gas-leak detector
Thermometer,
Level
Flaring tool set
Name
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INSTALLATION 7
ENGLISH
INSTALLATION
Indoor unit
Ceiling suspended type
- There should not be any heat source or steam near the unit.
- There should not be any obstacles to prevent the air circulation.
- A place where air circulation in the room will be good.
- A place where drainage can be easily obtained.
- A place where noise prevention is taken into consideration.
- Do not install the unit near the door way.
- Ensure the spaces indicated by arrows from the wall, ceiling, or other obstacles.
- The indoor unit must keep the maintenance space.
700(27 – 9/16) or more 700(27 – 9/16) or more
2500 (98 – 3/7)
or more
Floor
10 (13/32)
or more
300 (11 – 13/16)
or more
Unit: mm(inch)
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8THE INDOOR UNIT INSTALLATION
ENGLISH
THE INDOOR UNIT INSTALLATION
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
Cooking table
Air conditioner
Take enough
distance
• Install the unit horizontally using a level
gauge.
• During the installation, care should be
taken not to damage electric wires.
• 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
ceiling.
CAUTION
!NOTE
!
• 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
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.
3. Avoid places where inflammable gas is
generated.
4. Avoid place where noxious gas is
generated.
5. Avoid places near high frequency
generators.
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THE INDOOR UNIT INSTALLATION 9
ENGLISH
Open side-cover
Step 1
Backside
Right side cover
Backside
Left side
cover
Step 2
- Remove two screws from side-cover.
Step 3
Step 4
- Remove paper bracket from side-cover.
- Unlock side-cover from side-panel slightly
(Tap the side-cover with your palm on the
backside)
- Knock out the pipe hole from the left
sidecover with nipper/plier.
Hold the side-cover with other hand while
tapping to prevent it to fall down.
CAUTION
!
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10 THE INDOOR UNIT INSTALLATION
ENGLISH
Mounting the anchor nut and
bolt
- Prepare 4 suspension bolts. (Each bolts
length should be same.)
- Measure and mark the position for the
Suspension bolts and the piping hole.
- Drill the hole for anchor nut on the ceiling.
- Insert the nuts and washer onto the
suspension bolts for locking the suspension
bolts on the ceiling.
- Mount the suspension bolts to the
anchornuts firmly.
- Secure the hangers onto the Suspension
bolts (adjust level roughly.) using nuts,
washers and spring washers.
- Adjust a level with a level gauge on the
direction of left-right, back-forth by adjusting
suspension bolts.
- Adjust a level on the direction of top-bottom
by adjusting supension bolts. Then the unit
will be declined to the bottomside so as to
drain well.
- The following parts is option.
Hanging Bolt - W 3/8 or M10
Nut - W 3/8 or M10
Spring Washer - M10
Plate Washer - M10
(Unit : mm)
Suspension bolt
B
A
Nut
Ceiling
Anchor nut
Washer
Washer
Washer
Suspension
Suspension
bolts
bolts
Suspension
bolts
Spring
washer
Max.
12mm
Nut
Suspension
bolts
Hangen
Washer
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Spring washer
(M10)
Flat washer
for M10
(accessory)
Flat washer
for M10
(accessory)
Nut
(W3/8 or M10)
Wall
Indoor Outdoor
Slope gradient for
drain Should be
1/50 ~ 1/100
Capacity (kBtu/h) A B
18/24/30 1 018 355
36/48/54 1 418
Tighten the nut and bolt to prevent unit
from falling
• Drill the piping hole on the wall slightly
tilted to the outdoor side by using a
Ø 70 hole-core drill.
CAUTION
!
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THE INDOOR UNIT INSTALLATION 11
ENGLISH
Installation information for declination
- Install declination of the indoor unit is very important for the drain of the convertible type air
conditioner.
- Minimum thickness of the insulation for the connecting pipe shall be 10 mm.
- If the Installation Plates are fixed to horizontal line, the indoor unit after installing will be
declined to the bottomside.
CAUTION
!
Front of view
- The unit must be horizontal or inclined at angle.
- The inclination should be less than or equal to 1° or in between 10 to 20 mm inclined in drain
direction as shown in fig.
Ceiling
10~20 mm
Side of view
- The unit must be inclined to the bottomside of the unit when finished installation.
Ceiling
5~10 mm
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12 THE INDOOR UNIT INSTALLATION
ENGLISH
Indoor unit drain piping
- 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.
- Remove the rubber stopple before
connecting drain hose.
- Hook on the bracket after connecting the
drain hose as below.
Drain piping
- The drain hose should point downward for
easy drain flow.
- Do not make drain piping like the following.
- Be sure to execute heat insulation on the
drain piping.
Drain test
Use the following procedure to test the drain
pump operation:
- Set the air direction louvers up-and-down to
the position(horizontally) by hand.
- Pour a glass of water on the evaporator
using a kettle.
- Ensure the water flows through the drain
hose of the indoor unit without any leakage
and goes out the drain exit.
Drain hose
Bracket
Downward
slope
Do not raise Accumulated
drain water
Air
Waving
Water
leakage
Water
leakage Ditch
Less than
50 mm gap
Water
leakage
Tip of drain
hose dipped
in water
Heat insulation material: Polyethylene foam
with thickness more than 8 mm.
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THE INDOOR UNIT INSTALLATION 13
ENGLISH
Heat insulation
Use the heat insulation material for the
refrigerant piping which has an excellent heat-
resistance (over 120 °C).
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), water drops
are liable to fall. In this case, add heat
insulation material according to the following
procedure:
- Heat insulation material to be prepared...
Adiabatic glass wool with thickness 10 to 20
mm.
- Stick glass wool on all air conditioners that
are located in ceiling atmosphere.
Connecting cables to the indoor unit
- Remove the control box cover for electrical
connection between the indoor and out door
unit
- Use the cord clamper to fix the cord.
Flaring Work
Main cause for gas leakage is due to defect of
flaring work. Carry out correct flaring work in
the following procedure.
1Use the piping kit accessory or the pipes
purchased locally.
2Measure the distance between the indoor
and the outdoor unit.
3Cut the pipes a little longer than measured
distance.
4Cut the cable 1.5m longer than the pipe
length.
1. Completely remove all burrs from the cut
cross section of pipe/tube.
2. While removing burrs put the end of the
copper tube/pipe in a downward direction
while removing burrs location is also
changed in order to avoid dropping burrs
into the tubing.
Indoor unit
Thermal insulator
Fastening band
Refrigerant piping
Cut the pipes and the cable
Copper
pipe
90°
Slanted Uneven Rough
Burrs removal
Pipe
Reamer
Point down
Control box cover
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14 THE INDOOR UNIT INSTALLATION
ENGLISH
- Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal.
(not possible to put them on after finishing
flare work)
1Firmly hold copper pipe in a bar with the
dimension shown in table below.
2Carry out flaring work with the flaring tool.
1 Compare the flared work with the figure by.
2If a flared section is defective, cut it off
and do flaring work again.
1Align the center of the pipes and
sufficiently tighten the flare nut by hand
2Tighten the flare nut with a wrench
Putting nut on
Flare nut
Copper tube
Flaring work
Check
Connecting the installation pipe
and drain hose to the indoor unit.
Outside diameter Torque
mm inch kgf.m
Ø6.35 1/4 1.8~2.5
Ø9.52 3/8 3.4~4.2
Ø12.7 1/2 5.5~6.5
Ø15.88 5/8 6.3~8.2
Ø19.05 3/4 9.9~12.1
CAUTION
• The installation of pipe-work shall be
kept to a minimum
• Flared joint shall be restricted to use
with annealed pipe only, and to pipe
sizes not exceeding a diameter of 20
mm outside diameter.
!
Wrench
Indoor unit tubing
Open-end wrench
(fixed)
Connection
pipe
Flare nut
CAUTION
Copper in contact with refrigerants shall
be oxygen-free or de-oxidized, for
example Cu-DHP as specified in EN
12735-1 and EN 12735-2
!
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged Cracked Uneven thickness
= Improper flaring =
Indoor unit tubing Flare nut Pipes
<Wing nut type> <Clutch type>
Bar
Copper pipe
"A"
Pipe diameter
Inch (mm)
A inch (mm)
Wing nut type Clutch type
Ø1/4 (Ø6.35) 0.04~0.05 (1.1~1.3)
0~0.02
(0~0.5)
Ø3/8 (Ø9.52) 0.06~0.07 (1.5~1.7)
Ø1/2 (Ø12.7) 0.06~0.07 (1.6~1.8)
Ø5/8 (Ø15.88) 0.06~0.07 (1.6~1.8)
Ø3/4 (Ø19.05) 0.07~0.08 (1.9~2.1)
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THE INDOOR UNIT INSTALLATION 15
ENGLISH
3When needed to extend the drain hose of
indoor unit, assembly the drain pipe as
shown on the drawing
1Overlap the connection pipe insulation
material and the indoor unit pipe insulation
material. Bind them together with vinyl
tape so that there may be no gap.
2Set the tubing cutting line upward.
Wrap the area which accommodates the
rear piping housing section with vinyl tape.
3Bundle the piping and drain hose together
by wrapping them with vinyl tape sufficient
enough to cover where they fit into the
rear piping housing section.
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
Wrap the insulation material
around the connecting portion.
Insulation material
Gas Pipe Liquid Pipe
Cutting Line
Cutting Line
Good Case Bad Case
* Tubing cutting line have to be upward.
Vinyl tape(narrow)
Connection pipe
Connecting cable
Vinyl tape (wide) Wrap with vinyl tape
Indoor unit pipe
Pipe
Wrap with vinyl tape
Drain hose
Pipe
Vinyl tape(wide)
CAUTION
• When mechanical connectors are
reused indoors, sealing parts shall be
renewed.
• When flared joints are reused indoors,
the flare part shall be re-fabricated.
!
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16 THE INDOOR UNIT INSTALLATION
ENGLISH
- For wiring, use the designated power wire and
connect firmly, then secure to prevent outside
pressure being exerted on the terminal block.
- Use an appropriate screwdriver for tightening
the terinal screws. A screwdriver with a small
head will strip the head and make proper
tighterning impossible.
- Over-tightening the terminal screws may break
them.
When none are available, follow the
instructions below.
- Do not connect wiring of different
thicknesses to the power terminal block.
(Slack in the power wiring may cause
abnormal heat.)
- When connecting wiring which is the same
thickness, do as shown in the figure below.
Use round pressure terminals for connections
to the power terminal block.
Round pressure terminal Power wire
CAUTION
The connecting cable connected to the
indoor and outdoor unit should be
complied with the following
specifications (Rubber insulation, type
H05RN-F approved by HAR or SAA).
If the supply cord is damaged, it must be
replaced by a special cord or assembly
available from the manufacturer of its
service agent. When the connection line
between the indoor unit and outdooor
unit and outdoor unit is over 40 m,
connect the telecommunication line and
power line separately.
!
20 mm
GN/YL
NORMAL
CROSS-SECTIONAL
AREA 0.75 mm
2
Precautions when laying power wiring
Wiring Connection
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TEST RUNNING 17
ENGLISH
PRECAUTIONS IN TEST RUNNING
- The initial power supply must provide at least
90% of the rated voltage.
Otherwise, the air conditioner should not be
operated.
Check the following items when
installation is complete
After completing work, be sure to measure and
record trial run properties, and store measured
data, etc.
Measuring items are room temperature, outside
temperature, suction temperature, blow out
temperature, wind velocity, wind volume,
voltage, current, presence of abnormal vibration
and noise, operating pressure, piping
temperature,
compressive pressure.
As to the structure and appearance, check
following items.
- Is the circulation of air adequate?
- Is the draining smooth?
- Is the heat insulation complete
(refrigerant and drain piping)?
- Is there any leakage of refrigerant?
- Is the remote controller switch operated?
- Is there any faulty wiring?
- Are not terminal screws loosened?
M4......118 N.cm{12 kgf.cm}
M5......196 N.cm{20 kgf.cm}
M6......245 N.cm{25 kgf.cm}
M8......588 N.cm{60 kgf.cm}
Connection of power supply
Connect the power supply cord to the
independent power supply.
- Circuit breaker is required.
Operate the unit for fifteen minutes or more.
Evaluation of the performance
Measure the temperature of the intake and
discharge air.
Ensure the difference between the intake
temperature and the discharge one is more than
8°C (Cooling) or reversely (Heating).
- To cancel the test run, press any button.
TEST RUNNING
CAUTION
• For test run, carry out the cooling
operation firstly even during heating
season. If heating operation is carried
out firstly, it leads to the trouble of
compressor. Then attention must be
paid.
• Carry out the test run more than 5
minutes without fail.
!
Thermometer
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18
ENGLISH
TEST RUNNING
CAUTION
After the confirmation of the above
conditions, prepare the wiring as follows:
• 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.
• Provide a circuit breaker switch
between power source and the unit.
• 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
burnout of the wires.)
• Specification of power source.
• Confirm that electrical capacity is
sufficient.
• Be sure that the starting voltage is
maintained at more than 90 percent of
the rated voltage marked on the name
plate.
• Confirm that the cable thickness is as
specified in the power sources
specification. (Particularly note the
relation between cable length and
thickness.)
• Never fail to equip a leakage breaker
where it is wet or moist.
• 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.
• Use only 1 remote-controller contained
in indoor unit, when you combine to use
both cassette type indoor unit and
different Indoor units combinations as
shown below.
!HAND OVER
Teach the customer the operation and
maintenance procedures, using the operation
manual
(air filter cleaning, temperature control, etc.).
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19
ENGLISH
INSTALLATION INSTRUCTIONS
CAUTION
Installer setting mode is to set the detail function of the remote controller.
If the installer setting mode is not set correctly, it can cause problems to the product, user
injury or property damage. This must be set by an certificated installer, and any installation or
change that is carried out by a non-certificated person should be responsible for the results.
In this case, free service cannot be provided.
!
Refer to the Installer Setting Code Table
on the next page.
1. With the JET MODE / COOL button pressed,
press the RESET button.
2. By using the TEMPERATURE SETTING
button, set function code and setting value.
(Please refer the Installer Setting Code Table.)
3. Press the ON/OFF button toward the indoor
unit 1 time.
4. Reset the remote controller to use the general
operation mode.
INSTALLATION INSTRUCTIONS
Installer Setting - How to enter installer setting mode
°C/°F (5 s)
TIME (3 s)
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20
ENGLISH
INSTALLATION INSTRUCTIONS
Installer Setting - Installer Setting Code Table
Installer Setting Code Table
No. Function Function code Setting value Remote controller LCD
0 Mode override 0
0 : Set to master
1 : Set to slave
1Ceiling height
Selection 1
1 : Standard
2 : Low
3 : High
4 : Super high
2
Group control 2
0 : Set to master
1 : Set to slave
2 : Check master/slave
Auxiliary heater 2
3 : Set to auxiliary heater
4 : Cancel auxiliary heater
5 : Check auxiliary heater Installation
Mode Override
This Function is only for Non-Auto Changeover H/P model.
Ceiling Height Selection
Indoor unit connected to wired remote controller operate as wired remote controller setting.
Auxiliary heater
This function is only applied to models with Auxiliary Heater function being activated.
Group Control (optional)
This function is only for group control. Please don’t set this function in case of non-group
control.
After setting group control of the product, turn off the power then turn it back on after 1
minute.
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