Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 892

FDC-HKX
Example of piping
Outdoor unit: FDCJ280HKXE2B
Indoor unit: Combination of 8 units
[Branch pipe set : DIS-2KX10-E × 1 set, DIS-2KX20-EX × 3 set, DIS-2KX30-E × 3 set]
[Total capacity: 363 (36300W) ]
Outdoor unit
FDCJ280
Branch Branch Branch
piping 1 piping 2 piping 3
C
A B
Branch
G
piping 7
c d
b
a
Indoor unit 56 56 36 36
• Selection of branch piping size.
Item
Branch piping 1 Total capacity of the connected indoor units 363
Branch piping 2 Total capacity of the connected indoor units 251
Branch piping 3 Total capacity of the connected indoor units 215
Branch piping 4 Total capacity of the connected indoor units 179
Branch piping 5 Total capacity of the connected indoor units 143
Branch piping 6 Total capacity of the connected indoor units 72
Branch piping 7
Total capacity of the connected indoor units 112
Notes (1) Make the selection based on the size of each piping for branch piping sets with different size connections.
(2) If diameter adjustment is need for branch connection and on the indoor unit side, always makes the adjustment at the
branch connection.
Reference: The shape of the flow divider pipe and reducer is shown on the 889 page.
Pictogram
: Branch pipe
: Reducer
Notes (1) Use the designated piping size for the piping between
the outdoor unit and the first branch.
(2) Choose the appropriate sized reducer for piping between
the branch pipe and the indoor unit.
The size of reducer should match the piping size of the
indoor unit.
(3) Locate the branch pipe horizontally or vertically as
illustrated to the right.
890
Branch Branch Branch
piping 4 piping 5 piping 6
F
E
D
e f g h
36 71 36 36
Selection procedure
ID
Inner finish
OD
Outer finish
• Selecting piping size
Item Selection procedure
A Same as the outdoor unit piping size
B Total capacity of the connected indoor units 251
C Total capacity of the connected indoor units 215
D Total capacity of the connected indoor units 179
E Total capacity of the connected indoor units 143
F Total capacity of the connected indoor units 72
G Total capacity of the connected indoor units 112
a Indoor unit piping size (56).
b Indoor unit piping size (56).
c Indoor unit piping size (36).
d Indoor unit piping size (36).
e Indoor unit piping size (36).
f Indoor unit piping size (71).
g Indoor unit piping size (36).
h Indoor unit piping size (36).
Branch piping set
DIS-2KX30-E
DIS-2KX30-E
DIS-2KX30-E
DIS-2KX20-E
DIS-2KX20-E
DIS-2KX10-E
DIS-2KX20-E
Piping size (in)
Gasline
ø28.58
ø25.4
ø19.05
ø19.05
ø19.05
ø15.88
ø19.05
ø15.88
ø15.88
ø12.7
ø12.7
ø12.7
ø15.88
ø12.7
ø12.7
Horizontally
Floor
Good
No
Good
Floor
No
Floor
Liquid line
ø12.7
ø12.7
ø9.52
ø9.52
ø9.52
ø9.52
ø9.52
ø9.52
ø9.52
ø6.35
ø6.35
ø6.35
ø9.52
ø6.35
ø6.35
Vertically