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I
Outdoor Installation
&.NOTE:
·Be sure to fix the unit's legs with bolts when installing it.
·Be sure to install the unit firmly to ensure that it does not fall
by
earthquake or gust.
·The anchor bolts, nuts and washers for the installation are user prepared.
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Cl ""
I
~
Model
A
B
C
18K
33•718
12-3116 21-11/32
(860)
(310)
(542)
24K/38K/ 37-318
13-3111
22-7/8
42K
(950)
(340)
(580)
I
Refrigerant piping
1. Piping requirement
A
unit: inch(mm)
C
=IQ
I
L--L
[Unit: in.
(mm)I
D
E
F
d
1~7/16
14-1/2
6-518
7/16"21/32
(341)
(368)
(168)
(W17l
14-15/18 1&-1/4
7-1/4
5/B
(380)
(414)
(185)
(15)
Model
OUter Diameter of Pipe (In ./mm)
Gas
I
Liquid
161<J241</36K/42K
3/8(9.52)
I
1/4(6.35)
SelBcl9w
(at
1118814)
Min.4in.(10cm)
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.
lndooruntt
~
18K
24K
38K
42K
Piping to each indoor unit
(Ml/CID/E)
IIJm
;:;82(25)
,:;65.6(20) g!S,8(20)
~.8(20)
Outdoor unit
Total
langth of piping
be1-1 ell
IIJm
A+BS
Aotl•CS
A•B+C•DS ~•B+C+Do£
units
164(50)
197(60)
246(75)
Max
height
dlff'erence betwaan
indoor unit
end autdoor urit
(F)
ftJm
s4&(15)
max
height
diffilranca between
i1door units (G)
ftJm
,;;2.5(7.5)
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)]
x
0.807oz/5ft (15g/m)
For 42K: Additional refrigerant charge;;;[L-125ft (37.5m)]
><
0.807oz/5ft (15g/m)
2. Piping material
(1) Prepare the copper pipe on the spot.
<262(80)
(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.
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