Installation Of Indoor, Outdoor Unit - LG LT-D5480HL Service Manual

Ceiling cassette air conditioner
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Installation of Indoor, Outdoor Unit

1. Selection of the best location
1) Indoor unit
• There should not be any heat source or steam
near the unit.
• There should not be any obstacles to the air cir-
culation.
• 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 con-
sideration.
• 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 have the maintenance
space around.
2) 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.
3) Piping length and the elevation
Pipe Size
CAPACITY
GAS LIQUID
54K Btu/h
3/4"
1/2"
• Rated performance for refrigerant line length of: 7.5m
• If 54K Model is installed at a distance of 15m, 450g of refrigerant should be added
(15-7.5) x 60g
Elevation B (m)
Length A (m)
Max.
Max.
Rated
Rated
5
7.5
50
Ceiling
Ceiling Board
50 or
more
More than
30cm
F e
n c
o b
e o
s t a
r
c l e
s
* Additional
refrigerant
(g/m)
30
60
–14–
Ceiling Board
50 or
more
Floor
More than
More than
More than
30cm
30cm
More than 50cm
More than 70cm
Indoor unit
A
B
Outdoor unit
Unit:cm

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