CAUTION
1. During the connection of the indoor unit and the refrigerant pipe, never pull any parts of the
indoor unit forcefully: otherwise the refrigerant pipes or other pipes may crack, which would
then result in leakage.
2. The refrigerant piping should be supported by brackets. Unsupported piping will put stress on
the indoor unit and could lead to leaking or breakage.
If the specification of the outdoor unit pipe joint does not conform to that of the indoor unit, then
the joint specification of the outlet pipe of the indoor unit takes precedence. A reducing transition
shall be installed at the connection point of the outdoor unit so as to make the connection of the
outdoor unit compatible with that of the indoor unit.
Installing the Refrigerant Piping
Flaring Process
1. Hold the pipe downward to prevent cuttings from entering the pipe.
2. Cut the refrigerant pipe with the pipe cutter and remove the burrs.
3.
Remove the flare nuts at the stop valve of the outdoor unit and inside the accessory bag of
the indoor unit, put them onto the refrigerant pipe as shown below then flare the refrigerant
pipe with a flaring tool.
4.
Check if the flare part is spread evenly and there are no cracks.
Item
Model
Size of Fitting Pipe
Inch (mm)
Max. Pipe
Length
ft (m)
Max. Height Difference
between Indoor Unit
and Outdoor unit
ft (m)
Drainage pipe
(Outer Diameter
x wall thickness)
Inch (mm)
Liquid
Gas
12K
1/4
(6.35)
3/8
(9.53)
65-5/8
(20)
49-1/4
(15)
Ø 1 x 1/16
(Ø 25 x 1.5)
18K
1/2
(12.70)
65-5/8
(20)
49-1/4
(15)
24K
3/8
(9.53)
5/8"
(15.88)
98-7/16
(30)
49-1/4
(15)
17
Cassette Unit
