LG LM-1963H2L Service Manual ▷ View online
–21–
7. Installation of Decorative Panel
1. Temporarily fix two decorative panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount
10mm in length.)
The fixing screws (hexagon M5 screw) are included the decorative panel box.
The fixing screws (hexagon M5 screw) are included the decorative panel box.
2. Remove the air inlet grille from the decorative panel. (Remove the hook for the air inlet grille cord.)
3. Hook the decorative panel key hole ( ) on the screws fixed in step above, and slide the panel so that
3. Hook the decorative panel key hole ( ) on the screws fixed in step above, and slide the panel so that
the screws reach the key hole edge.
4. Retighten completely two temporarily fixed screws and other two screws. (Total 4 screws)
5. Connect the louver motor connector.
6. After tightening these screws, install the air inlet grille (including the air filter).
5. Connect the louver motor connector.
6. After tightening these screws, install the air inlet grille (including the air filter).
Decorative panel fixing screws
(hexagon M5 screws)
Temporality fitting at 2 places
(Tightening about 10mm)
(hexagon M5 screws)
Temporality fitting at 2 places
(Tightening about 10mm)
Decorative panel
Louver motor
connector
connector
Install the panel after
making sure that the
piping side of the unit body
matches the piping
indication of the decorative
panel
making sure that the
piping side of the unit body
matches the piping
indication of the decorative
panel
Control box
cover
cover
Louver motor connector
(In the control box)
(In the control box)
Air conditioner unit
Piping side
Inlet Grille
Decorative panel fixing screws
(Hexagon M5 screw)
(Hexagon M5 screw)
Key holes
The arrow ( ) should point
to the side where the pipes are.
to the side where the pipes are.
The decorative panel has its installation
direction.
direction.
Before installing the decorative panel,
always remove the paper template.
always remove the paper template.
¡
¡
ÿ
Method of connecting louver motor connector
• Louver motor housing consists in main PCB
• Open control cover, then connect louver motor connector to
• Open control cover, then connect louver motor connector to
louver motor housing in main PCB.
–22–
Install certainly the decorative panel.
Cool air leakage causes sweating.
¤
Water drops fall.
8. 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.
to prevent reversal flow.
• During drain piping connection, be careful not to
exert extra force on the drain port on the indoor
unit.
unit.
• The outside diameter of the drain connection on
the indoor unit is 32mm.
• Be sure to execute heat insulation on the drain
piping.
Air conditioner
unit
unit
Ceiling
board
Decorative panel
Decorative
panel
panel
Fit the insulator (this part) and
be careful for cool air leakage
be careful for cool air leakage
Good example
Air
Cool air leakage
(no good)
Bad example
Ceiling
board
Air conditioner unit
Maintenance
drain port
drain port
Upward
routing
not allowed
routing
not allowed
Pipe clamp
Indoor unit
CAUTION
Piping material: Polyvinyl chloride pipe VP-25
and pipe fittings
and pipe fittings
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.
end.
• Feed water to the flexible drain hose and check
the piping for leakage.
• Be sure to check the drain pump for normal oper-
ating 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.
Heat insulation material: Polyethylene foam with thickness more than 8 mm.
Drain test
Feed water
Drain Pump
Drain pan
Flexible drain hose
(accessory)
(accessory)
Main
drain pipe
drain pipe
Glue the joint
Drain
port
port
Drain hose connection
Use the clip (accessory)
Use the clip (accessory)
–23–
1. Use the heat insulation material for the refriger-
ant piping which has an excellent heat-resis-
tance (over 120°C).
tance (over 120°C).
2. Precautions in high humidity circumstance:
This air conditioner has been tested according to
the "KS Standard Conditions with Mist" and con-
firmed that there is not any default. However, if it
is operated for a long time in high humid atmo-
sphere (dew point temperature: more than
23°C), water drops are liable to fall. In this case,
add heat insulation material according to the fol-
lowing procedure:
the "KS Standard Conditions with Mist" and con-
firmed that there is not any default. However, if it
is operated for a long time in high humid atmo-
sphere (dew point temperature: more than
23°C), water drops are liable to fall. In this case,
add heat insulation material according to the fol-
lowing procedure:
Indoor unit
Thermal insulator
(accessory)
(accessory)
Fastening band
(accessory)
(accessory)
Refrigerant piping
HEAT INSULATION
1. Wrap the connecting portion of indoor unit with
the Insulation material and secure it with two
Plastic Bands. (for the right pipings)
Plastic Bands. (for the right pipings)
• If you want to connect an additional drain hose,
the end of the drain-outlet should keep distance
from the ground. (Do not dip it into water, and fix
it on the wall to avoid swinging in the wind.)
from the ground. (Do not dip it into water, and fix
it on the wall to avoid swinging in the wind.)
2. Tape the Pipings, drain hose and Connecting
Cable from bottom to top.
3. Form the pipings gathered by taping along the
exterior wall and fix it onto the wall by saddle
or equivalent.
or equivalent.
In case of the Outdoor unit being installed
below position of the Indoor unit.
below position of the Indoor unit.
FORM THE PIPINGS
Trap is required to prevent water from entering
into electrical parts.
into electrical parts.
Seal a small opening
around the pipings
with gum type sealer.
around the pipings
with gum type sealer.
Drain
hose
Taping
Pipings
Connecting
cable
cable
Power supply
cord
cord
Plastic Band
• 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.
• In addition to the normal heat insulation (thickness: more than 8mm) for refrigerant piping (gas piping: thick
• Stick glass wool on all air conditioners that are located in ceiling atmosphere.
• In addition to the normal heat insulation (thickness: more than 8mm) for refrigerant piping (gas piping: thick
piping) and drain piping, add further 10mm to 30mm thickness material.
–13–
Indoor unit
Outdoor unit
B
A
MODEL
24K, 28K BTU 5/8"
3/8"
7.5
20
GAS LIQUID
7.5
15
50
Elevation B(m)
Length A(m)
* Additional
refrigerant
(g/m)
Pipe Size
Rated
Rated
Max.
Max.
• If this Model is installed at a distance of 15m, 375g of
refrigerant should be added.....................................(15-7.5)x50g
NOTE:
• Thoroughly study the following installation locations:
1. In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the
turbo fan, the fin of the heat exchanger and the drain pump, resulting in heat exchange reduction,
spraying, dispersing of water drops, drain pump malfunction, etc.
In these cases, take the following actions:
• Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient
spraying, dispersing of water drops, drain pump malfunction, etc.
In these cases, take the following actions:
• Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient
capacity so that it draws oily steam which should not flow into the suction of the air conditioner.
• Make enough distance from a cooking room to install the air conditioner in such a place where it
may not suck in oily steam.
2. Avoid installing air conditioner in such circumstances where cutting oil mist or iron powder is in sus-
pension in factories, etc.
3. Avoid places where inflammable gas is generated, flows in, is stored or vented.
4. Avoid places where sulfurous acid gas or corrosive gas is generated.
5. Avoid places near high frequency generators.
4. Avoid places where sulfurous acid gas or corrosive gas is generated.
5. Avoid places near high frequency generators.
3) Piping length and the elevation
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
for smoke-collecting
hood with sufficient
capacity.
Cooking table
Air conditioner
Take enough
distance
distance
