Specifications
28
MULTI SYSTEM
Outdoor unit
Indoor unit
L
Liquid line
Gas line
1
2
3
3
4
4
24
11
ID15.88
ID15.88
ID15.88
11
48
210
8
ID9.52
ID9.52
ID9.52
180
8
8
105
50
ID9.52
ø6.35
flared nut
2 piece
OD15.88
2 piece
ID12.7
80
10
Decision of piping specification
FDC71
FDC100
FDC125
FDC140
40
+
40
50
+
50
60
+
60
71
+
71
(Example)
Models FDC71VNX, FDC100~140VN/VS
[Branch pipe set : DIS-WA1]
When 40-60 models of indoor units are applied to this combination, the
reducer 3 supplied with the branch piping set should be used in order to
reduce the liquid piping size from ø9.52mm to ø6.35mm at indoor unit side
(flare connection). Accordingly be sure to select the liquid piping size
ø9.52mm from branch to indoor unit.
The reducer 4 is for FDC71 and 100 models only.
Item
Liquid pipe
Main pipe
Model
Indoor unit
combinations
Gas pipe
Symbol
1
Liquid pipe Reducer
Symbol
3
Reducer
Symbol
2
Symbol
4
Symbol 1 to 4 in the drawing shows the symbols of branch piping parts in the chart respectively.
Branch piping should always be arranged to have level or perpendicular position.
Notes (1)
(2)
Branch pipe
Gas pipe
Main pipe Branch pipe
Notes (1)
(2)
ø9.52Xt0.8 ø9.52Xt0.8
ø12.7Xt0.8
ø15.88Xt1.0
ø15.88Xt1.0
2-Way Branch
Floor
Mount
sections
level with the floor.
Floor
Mount sections
perpendicular to the floor.
3-Way Branch
Floor Floor
Up to Four indoor units can be connected
to a single outdoor unit and simultaneously
operated with a single remote control.
By referring to the following table for applicable indoor units,
select the same models and capacities.
Twin / Triple / Double Twin Multi System
Twin type
Applicable indoor units
Combination of indoor units
Chart of shapes of
branch piping parts
(DIS-WA1)
The branch piping (both gas and liquid lines)
should always be arranged to have a level
or perpendicular position.
Diagrams below show the application as samples. For further information, refer to TECHNICAL MANUAL.
40 50 60 71 100 125
Twin Triple
Double Twin
Capacity Combination
Model
4way
FDT
4way compact (600 x 600mm)
FDTC
Low/Middle Static pressure
FDUM
Ceiling Suspended
FDEN
Wall Mounted
SRK
FLOOR STANDING
FDF
Only used with outdoor units of Multi System
FDC71VNX
Outdoor
Unit
Twin
Triple
FDC100VN
FDC100VS
FDC125VN
FDC125VS
FDC140VN
FDC140VS
FDC200VS FDC250VS
40 + 40
FDC100VNX
FDC100VSX
50 + 50
FDC140VNX
FDC140VSX
71 + 71
FDC125VNX
FDC125VSX
60 + 60 50 + 50 60 + 60 71 + 71 100 + 100 125 + 125
50 + 50 + 5050 + 50 + 50 71 + 71 + 71
Double
Twin
50+50+50+50
60+60+60+60
Micro Inverter