Mitsubishi Electric PUMY-P36NKMU1 Manuel D'installation page 7

4. Installing the refrigerant piping
A
A
A+a+b+c+d+e+f 300 m [984 ft]
L = A+f 150 m [492 ft], = 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. 4-1
1)
A+B+C+D+a+b+c+d+e 300 m [984 ft]
L = A+B+C+D+e 150 m [492 ft]
= B+C+D+e 30 m [98 ft]
H 50 m (Outdoor lower H 40 m [131 ft])
h 15 m [49 ft]
A
L
r
e
B C D
B
a b c d
C
C C C
C
30 m [98 ft]
40 m [131 ft])
A Outdoor nit
B First Branch
C Indoor unit
D Cap
f
C
Conversion formula
1/4 F 6.35 (1/4)
3/8 F 9.52 (3/8)
1/2 F 12.7 (1/2)
5/8 F 15.88 (5/8)
3/4 F 19.05 (3/4)
A, B, C, D
Liquid pipe
P MY-P36-48 9.52 [3/8]
a, b, c, d, e, f
Model number Liquid pipe
06, 08, 12, 15, 18 6.35 [1/4]
24, 27, 30, 36, 48, 54 9.52 [3/8]
Branch kit model
CMY-Y62-G-E
4-Branching header
CMY-Y64-G-E
Piping preparation
1 Table below shows the speci cations of pipes commercially available.
Outside diameter Insulation thickness
mm (inch) mm (inch)
6.35 (1/4) 8 (5/16)
9.52 (3/8) 8 (5/16)
12.7 (1/2) 8 (5/16)
15.88 (5/8) 8 (5/16)
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
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])
Gas pipe
15.88 [5/8]
(mm [inch])
Gas pipe
12.7 [1/2]
15.88 [5/8]
8-Branching header
CMY-Y68-G-E
Insulation material
Heat resisting foam plastic 0.045
speci c gravity
7