Mitsubishi Electric PUMY-P60NKMU1 Manuel D'installation page 7

. Installing the refrigerant piping
. . Pipe length and height difference (Fig. -1)
A
A
B
A
A+a+b+c+d+e+f 150 m [492 ft]
L = A+f
H 50 m [164 ft] (Outdoor lower H
h 15 m [49 ft]
A
L
r
B
D
a b c d e
C C
C C C
Fig. -1
A+B+C+D+a+b+c+d+e 150 m [492 ft]
L = A+B+C+D+e 80 m [262 ft]
30 m [98 ft]
H 50 m [164 ft] (Outdoor lower H
m [131 ft])
h 15 m [49 ft]
L
r
e
B C D
a b c d
C
C C C
C
30 m [98 ft]
40 m [131 ft])
A
B First Branch
C Indoor unit
D Cap
f
C
Conversion formula
1/4 F
3/8 F
1/2 F
5/8 F
3/4 F
A, B, C, D
40
a, b, c, d, e, f
Model number
06, 08, 12, 15, 18
24, 27, 30, 36, 48, 54
72
4-Branching header
CMY-Y64-G-E
Piping preparation
1
Outside diameter Insulation thickness
mm (inch)
6.35 (1/4)
9.52 (3/8)
12.7 (1/2)
15.88 (5/8)
2 Ensure that the 2 refrigerant pipes are insulated to prevent condensation.
3 Refrigerant pipe bending radius must be 4" (100 mm) or more.
Caution
Be sure to use the insulation of speci ed thickness. E cessive thickness may
cause incorrect installation of the indoor unit and branch bo , and lack of
thickness may cause dew drippage.
Warning:
When pumping down the refrigerant, stop the compressor before disconnect-
ing the refrigerant pipes. The compressor may burst and cause injury if any
foreign substance, such as air, enters the system.
(mm [inch])
Liquid pipe Gas pipe
[3/8] [3/4]
(mm [inch])
Liquid pipe Gas pipe
[1/4] [1/2]
[3/8] [5/8]
[3/8] [3/4]
Branch kit model
CMY-Y62-G-E
8-Branching header
CMY-Y68-G-E
Insulation material
mm (inch)
8 (5/16)
8 (5/16)
Heat resisting foam plastic 0.045
8 (5/16)
8 (5/16)
7