Mitsubishi Electric MSC-07RV Service Manual page 40

MSX-18RV-
E1
MAX.REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE
Indoor unit A
MSC-09RV - E1
Outdoor unit
MUX-18RV - E1
UNIT No.
Max.
limits
Note: The length of piping to individual units (A,B,C) should not exceed 10 meters.
If units B and C are linked, the maximum combined length of piping should not exceed 15 meters.
ADDITIONAL REFRIGERANT CHARGE (R-22:g)
A
unit
B C
unit + unit
PIPING PREPARATION
1Table below shows the specifications of pipes commercially available.
UNIT No.
For liquid
A B
, and
C
unit
2Ensure that the 2 refrigerant pipes are well insulated to prevent condensation.
3Refrigerant bending radius must be 10cm or more.
L H
A
Pipe length
L
A A
L 10m
B
B
L 10m
C C
Outdoor unit
precharged
750g
Outdoor unit
precharged
7m
750g 0
Outside diameter
Pipe
mm
6.35
For gas 9.52
Indoor unit B
MSC-09RV - E1
L H
B
10m
L
B
Total
+
15m
L
C
Refrigerant piping length (one way)
7m 8m
0 15
Refrigerant piping length (one way,2 unit total)
8m 9m 10m
15 30 45
Insulation
thickness
inch
1/4 8mm
3/8 8mm
40
Indoor unit C
MSC-09RV - E1
L
C
Height difference (H)
5m
5m
5m
9m
30
11m 12m 13m
60 75 90
Insulation material
Heat resisting foam plastic
0.045 specific gravity
H
No. of bends
10
10
Total
15
10
10m
45
14m 15m
105 120