LG CEILING CASSETTE TYPE AIR CONDITIONERS - Indoor and Outdoor Unit Installation

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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
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.
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.
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Unit:cm
Ceiling
Ceiling Board
Ceiling Board
30 or more
Above 250 330 or less
100 or more
50 or
more
50 or
more
30 or less
;;;
;;;
yyy
yyy
;y
Floor
More than
30cm
Sunroof
Fence or
obstacles
More than 70cm
More than 50cm
More than
More than
30cm
30cm
More than
30cm
Indoor unit
Outdoor unit
B
A
2. Installation of Indoor, Outdoor Unit
• Rated performance for refrigerant line length of: 7.5m
• If 18K Model is installed at a distance of 15m, 187.5g of refrigerant
should be added ..................................................................(15-7.5)x25g
3) Piping length and the elevation
18K Btu/h 1/2" 1/4" 7.5 20 5 8 25
24K Btu/h 5/8" 1/4" 7.5 20 5 8 30
H/P 5/8" 1/4" 7.5 50 5 30 40
C/O 5/8" 1/4" 7.5 50 5 30 30
36K Btu/h 5/8" 1/4" 7.5 50 5 30 40
48K Btu/h 3/4" 3/8" 7.5 50 5 30 50
CAPACITY
GAS LIQUID Rated Max. Rated Max.
Elevation (m)
Length
(m)
* Additional
refrigerant
(g/m)
Pipe Size
28K Btu/h