Specifications
1054
FDC-HKXR
Use reducer A and process the φ12.7
portion into a flare.
Cut off reducer B using a pipe cutter
as shown in the illustration and make a
flare.
Process the included reducer as illustrated below.
Use the flare nuts included with the individual flow divide controller.
When the indoor unit capacity is 90 or more
When the indoor unit capacity is 50 or less
Piping connection instructions (for the above example)
( OD12.7 → ID15.88 )
Cut off reducer B using a pipe cutter
as shown in the illustration and make a
flare.
( OD15.88 → ID12.7 )
( OD15.88 → ID19.05 )
A type
B type
B type
70 or more
ID19.05(Brazing)
ID19.05(Brazing)
ID15.88(Brazing)
Reducer (accessory)
B
70 or more
ID6.35(Brazing)
ID12.7(Brazing)
Reducer (accessory)
ID12.7(Brazing)
ID6.35(Brazing)
Reducer (accessory)
CC
B
Same as the outdoor unit piping size (FDCP2501HKRE2)
Total capacity of connected indoor units (236)
Total capacity of connected indoor units (165)
Total capacity of connected indoor units (109)
Total capacity of connected indoor units (64)
Total capacity of connected indoor units (112)
Total capacity of connected indoor units (71)
Total capacity of connected indoor units (56)
Total capacity of connected indoor units (45)
Total capacity of connected indoor units (36)
Total capacity of connected indoor units (28)
Indoor unit piping size (112)
Indoor unit piping size (71,56)
Indoor unit piping size (45,36,28)
A
B
C
D
E
F
G
H
I
J
K
a
b,c
d~f
Selection procedureItem
Piping size(mm)
Intake
gas line
Gas line Liquid line
ø
28.58
ø
25.4
ø
19.05
ø
19.05
ø
15.88
ø
19.05
ø
15.88
ø
12.7
ø
12.7
ø
12.7
ø
12.7
ø
19.05
ø
19.05
ø
15.88
ø
15.88
ø
12.7
ø
15.88
ø
12.7
ø
12.7
ø
12.7
ø
12.7
ø
12.7
ø
19.05
ø
15.88
ø
12.7
ø
12.7
ø
12.7
ø
9.52
ø
9.52
ø
9.52
ø
9.52
ø
9.52
ø
6.35
ø
6.35
ø
6.35
ø
6.35
ø
9.52
ø
9.52
ø
6.35
Item
Branch piping 1
Branch piping 2
Branch piping 3
Branch piping 4
Branch piping 5
Horizontal branch piping set – down-flow indoor unit capacity total. (348)
Horizontal branch piping set – down-flow indoor unit capacity total. (236)
Horizontal branch piping set – down-flow indoor unit capacity total. (165)
Vertical branch piping set – down-flow indoor unit capacity total. (109)
Vertical branch piping set – down-flow indoor unit capacity total. (64)
Selection procedure Branch pipng set
DIS-1KXR3-E
DIS-1KXR3-E
DIS-1KXR3-E
DIS-V1KXR3-E
DIS-V1KXR3-E
• Selection piping size
• Selection of branch piping size.
Floor
Floor
Good
Good
No No
Floor
Floor
Horizontally
Vertically
Note 1: When making branch connections (for both gas and liquid lines), be sure that the proper
horizontal branches and vertical branches are used.