42
Outdoor Unit
Pipe connections between indoor and outdoor unit
u
The amount of Refrigerant
The calculation of the additional charge should take into account the length of pipe and CF(correction
Factor) value of indoor unit.
Additional charge(kg)
+
+
+
=
+
Total liquid pipe
:Ø25.4 mm
Total liquid pipe
:Ø22.2 mm
Total liquid pipe
:Ø19.05 mm
Total liquid pipe
:Ø15.88 mm
Total liquid pipe
:Ø12.7 mm
Total liquid pipe
:Ø9.52 mm
Total liquid pipe
:Ø6.35 mm
CF value of indoor unit
+
+
+
CAUTION
Use only 2-series of indoor unit. Ex) JRNU***2
Amount refrigerant of Indoor units
Example) 4Way Ceiling Cassette 14.5kW -1ea
Ceiling concealed Duct 7.3kW-2ea
Wall Mounted 2.3kW-4ea
CF = 0.64 × 1 + 0.26 × 2 + 0.24 × 4 = 2.12 kg
v lu o indoor unit
CF a e f
(unit k )
: g
Capac ty(Btu h(kW))
i
/
7k
k
1
15k 1 k
24
8k 3
42
k 7
6k
5k
9
2k
8
k
2
6k
k
48
6k 9
Type
(1.6) (2.2) (2.8) (3 6) (4.5) (5.6) (7.1) (8. ) (10.6) (12.3) (14.1) (22.4) (28 0)
.
2
.
Ceil ng oncea ed uct (Low ta ic)
i
C
l
D
S t
7
.1
.
0
7
37
-
0.1
0 7 0 17
.17 0.3
0.
-
-
-
-
-
-
Ceiling Concealed Duct (High Static)
.26 0.2
0. 6 0 26
.26
.26 0.4
0. 4 0 44
.62
.00 1.0
-
0
6
2
.
0
0
4
4
.
0
1
0
l M
t
Wal oun ed
.
0
8
-
0.24 0.24 0 24 0.24
.28 0.2
-
-
-
-
-
-
1Way Ceiling asse te
C
t
20
.2
0.
-
9
29
-
0.
0 0
20
0.2
0.
-
-
-
-
-
-
i i
e
2Way Ce l ng Cass tte
-
-
-
-
-
.16 0.16
0
-
-
-
-
-
-
4Way Ceiling asse te
C
t
0 18
.18 0.2
0.2
0 2
.32
.48 0.4
0. 4 0 4
.64
-
-
.
0
5
5
.3
0
0
8
6
.6
0
L
l
ARTCOO Gal ery
-
0.10 0.10 0.10
-
-
-
-
-
-
-
-
-
o
t
i
Fl or S and ng
.
0
0
7
-
0.17 0.17 0 17
.17
.37 0.3
-
-
-
-
-
-
i
Ceil ng & Floor
-
-
0.10 0.10
-
-
-
-
-
-
-
-
-
Ceiling uspe de
S
n
d
-
-
-
-
-
5
.35
-
-
-
75
-
0.3
0
0.
-
on o e
C
s l
.
0
-
0.17 0.17 0 17
.17
-
-
-
-
-
-
-
-
a
Fresh Air Int ke Unit
-
-
-
-
-
-
-
-
-
-
.62
0
1.00
.0
1 0
at recovery e i at
D )
He
v nt l or( X
-
-
-
0.20
-
2
0. 0 0.20
-
-
-
-
-
-
