Specifications

16
M5MSX-2009
Refrigerant Piping Work
Piping Length and Elevation
If the pipe is too long, both capacity and reliability of the unit will drop. As the number of bends
increases, resistance to the ow of refrigerant system increases, thus lowering cooling capacity. As a result,
the compressor may become defective. Always choose the shortest path and follow the recommentdations
astabulated below.
Individual indoor unit can have a maximum length of 20 m (65.6ft), maximum elevation of 5 m (32.8ft) and
maximum number of bends of 10, however, the total pipe length must not exceed 30m (M5MSX020AR), 50m
(M5MSX025AR) or 60m (M5MSX030AR) depending on the model of the outdoor unit.
Remark: The refrigerant pre-charged in the outdoor unit is for total piping length up to 20m for model
M5MSX020A/AR and 40m for model M5MSX025A/AR and M5MSX030A/AR.
VERTICAL HEIGHT
DIFFERENCE MAX. H
L4
L3
L2
L1
OUTDOOR UNIT
INDOOR UNIT
Item
1
2
3
Model
Long Piping
O/D
Precharged
Charge Amount
for Additional
Piping Length
1650g
20m
0
40m
0
40m
0
25m
+100g
45m
+100g
50m
+200g
30m
+200g
50m
+200g
60m
+400g
2320g
M5MSX020A/AR
(1 TO 2)
M5WMX010
G/GR
M5WMX015
G/GR
M5WMX020
G/GR
20 20 20
20 20 20
20 20 20
M5MSX025A/AR
(1 TO 3)
Coupling Model
Max. Elevation, H (m/ft)
Max. Number of Bends
Liquid Pipe Size
Gas Pipe Size
M5WMX010G/GR
5
10
1/4”
3/8”
M5WMX015G/GR
5
10
1/4”
1/2”
M5WMX020G/GR
5
10
1/4”
1/2”
M5MSX030A/AR
(1 TO 4)
(Total length L
1 + L2 = 30m)
(Total length L
1 + L2+ L3 = 50m)
(Total length L
1 + L2+ L3+ L4 = 60m)
Application Information