14
Application Information
4) Refrigerant Piping
When the pipe length becomes too long, both the capacity and reliability drop. As the number of bends increases,
system piping resistance to the refrigerant
fl
ow increases, thus lowering the cooling capacity, and as the result
the compressor may become defective. Always choose the shortest path and follow the recommendation as
tabulated below:
Model
Indoor
FFRN25CXV1
FFQN25CXV1
FFRN35CXV1
FFQN35CXV1
FFRN50CXV1
FFQN50CXV1
Outdoor
R(Y)N25CXV1 R(Y)N35CXV1 R(Y)N50CXV1
Max. Length, m
12
12
15
Max. Elevation, m
5
5
8
Max. No. of Bends
10
10
10
Model
Indoor
FCRN50EXV1
FCQN50EXV1
FCRN60EXV1
FCQN60EXV1
FCRN71EXV1
FCQN71EXV1
Outdoor
R(Y)N50CXV1 R(Y)N60CXV1
RR71CXV1
RQ71CXV1
Max. Length, m
15
15
15
Max. Elevation, m
8
8
8
Max. No. of Bends
10
10
10
Model
Indoor
FCRN100EXV1
FCQN100EXV1
FCRN125EXV1
FCQN125EXV1
Outdoor
RR90/100DXV1
RQ90/100DXV1
RR100DXY1
RQ100DXY1
RR125DXY1
RQ125DXY1
Max. Length, m
45
45
Max. Elevation, m
25
25
Max. No. of Bends
10
10
Piping sizes (
fl
are connection type) are as follows:
Model
R(Y)N25CXV1 R(Y)N35CXV1 R(Y)N50CXV1
Liquid, mm / in
6.35 / 1/4
6.35 / 1/4
6.35 / 1/4
Suction, mm / in
9.52 / 3/8
12.70 / 1/2
12.70 / 1/2
Model
R(Y)N60CXV1
RR71CXV1
RQ71CXV1
RR90DXV1
RQ90DXV1
Liquid, mm / in
6.35 / 1/4
9.52 / 3/8
9.52 / 3/8
Suction, mm / in
15.88 / 5/8
15.88 / 5/8
15.88 / 5/8
Model
RR100DXV1
RQ100DXV1
RR100DXY1
RQ100DXY1
RR125DXY1
RQ125DXY1
Liquid, mm / in
9.52 / 3/8
Suction, mm / in
15.88 / 5/8
DAIKIN_FFRN.indb 14
DAIKIN_FFRN.indb 14
12/27/2012 9:28:09 AM
12/27/2012 9:28:09 AM
