NOTE:
Model
Outer Diameter of Pipe (in./mm)
Gas
Liquid
18K/24K/36K/42K
3
/
8
(
9.52)
1
/
4
(
6.35)
Outdoor
Installation
Concrete base or alike
Min.4in.(10cm)
Setscrew
(at least 4)
About 16in.(40cm)
About 4in.(10cm)
unit: inch(mm)
Installation instructions
7
[Unit: in. (mm)]
Model
A
B
C
D
E
F
d
18K
33-7/8
(860)
12-3/16
(310)
21-11/32
(542)
13-7/16
(341)
14-1/2
(368)
6-5/8
(168)
7/16*21/32
(11*17)
24K/36K/
42K
37-3/8
(950)
13-3/8
(340)
22-7/8
(580)
14-15/16
(380)
16-1/4
(414)
7-1/4
(185)
5/8
(15)
The maximum allowable length of refrigerant piping, and the maximum allowable height difference between the
outdoor and indoor units, are listed below.
The shorter the refrigerant piping is, the better the performance will be.
So the connecting pipe should be as short as possible.
1. Piping requirement
2. Piping material
(1
)
Prepare the copper pipe on the spot.
(2) Choose dustless, non-humid, clean copper pipe. Before installing the pipe, use nitrogen or dry air to blow away
the dust and impurity on the tube.
Additional refrigerant charge
The unit has been filled with refrigerant, but if L (total pipe length) exceeds standard length, additional
refrigerant (R410A) change is required.
For 18K: Additional refrigerant charge=[L-50ft (15m)]
×
0.807oz/5ft (15g/m)
For 24K: Additional refrigerant charge=[L-75ft (22.5m)]
×
0.807oz/5ft (15g/m)
For 36K: Additional refrigerant charge=[L-98ft (30m)]
×
0.807oz/5ft (15g/m)
For 42K: Additional refrigerant charge=[L-125ft (37.5m)]
×
0.807oz/5ft (15g/m)
Refrigerant piping
18K
24K
36K
42K
Piping to each indoor unit
(A/B/C/D/E)
ft./m
≤
82
(
25
)
≤
65
.
6
(
20)
≤
65
.
6
(
20)
≤
65
.
6
(
20)
Total length of piping between all
units
ft./m
A+B≤
164
(
50
)
A+B+C≤
197
(
60
)
A+B+C+D≤
246
(
75
)
A+B+C+D+E
≤
262
(
80)
Max height difference between
indoor unit and outdoor unit (F
)
ft./m
≤
49 (15)
max height difference between
indoor units (G
)
ft./m
≤
25
(
7.5)
Model
Item
Outdoor unit
Indoor unit
Pipe length E
B
C
D
E
A
Pipe length A
Height dif
ference F
Height
dif
ference G
Summary of Contents for 18K
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