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M5MSY-2010 Application Information
REFRIGERANT PIPING
Piping Length & 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 fl ow of refrigerant system increases, thus lowering cooling capacity. As a result, the
compressor may become defective. Always choose the shortest path and not exceed the maximum piping
length as tabulated below.
Model
Maximum
Total Piping
Length (m)
Single Indoor
Maximum
Piping
Length(m)
Maximum
height
Difference(m)
Pre-charged
Total Piping
length (m)
Outdoor Unit
Pre-charged
(kg)
Amount of
Additional
Charge (g/m)
M5MSY20BR
(2 Ports)
L
1
+ L
2
≤ 50 L ≤ 25 H ≤ 15 30 2.0 20
M5MSY25BR
(3 Ports)
L
1
+ L
2
+ L
3
≤
60
L ≤ 25 H ≤ 15 30 2.6 20
M5MSY30BR
(4 Ports)
L
1
+ L
2
+ L
3
+ L
4
≤ 60
L ≤ 25 H ≤ 15 30 2.6 20
INDOOR UNIT
OUTDOOR UNIT
VERTICAL HEIGHT
DIFFERENCE MAX. H