Daikin FDM10CXV1 Technical Manual page 18

Application Information
(4) Refrigerant Piping
Maximum Pipe and Maximum Number of Bends
• 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 font compressor may become defective. Always choose the shortest path and follow
the recommendation as tabulated below:
Indoor
Model
Outdoor
Max. Length, m
Max. Elevation, m
Max. No. of Bends
Indoor
Model
Outdoor
Max. Length, m
Max. Elevation, m
Max. No. of Bends
Piping Sizes (Flare connection type)
Piping sizes are as follows:
R22
Model
Liquid, mm / in
Suction, mm / in
Model
Liquid, mm / in
Suction, mm / in
15
FDM10/15CXV1 FDM20/25CXV1
FDYM10/15CXV1 FDYM20/25CXV1
FDB10/15CXV1 FDB20/25CXV1
FDYB10/15CXV1 FDYB20/25CXV1
R(Y)10/15CXV1 R(Y)20/25CXV1
12
5
10
FDM38/40/50CXV1 FDM60CXV1
FDYM38/40/50CXV1 FDYM60CXV1
FDB40/50CXV1 FDB60CXV1
FDYB40/50CXV1 FDYB60CXV1
R(Y)35/40DXV1
R(Y)61DXY1
R(Y)40/50DXY1
45
25
10
R(Y)10CXV1 R(Y)15CXV1
6.35 / 1/4
9.52 / 3/8 12.70 / 1/2
R(Y)28CXV1 /
R(Y)35/40DXV1 /
R(Y)30DXV1 /
R(Y)40DXY1
R(Y)30DXY1
9.52 / 3/8
15.88 / 5/8 19.05 / 3/4
R(Y)28CXV1
15 15
8
10 10
35
15
10
R20CXV1 /
RY18/20CXV1
6.35 / 1/4 6.35 / 1/4
15.88 / 5/8
R(Y)50DXY1
9.52 / 3/8 9.52 / 3/8
19.05 / 3/4
FDM28/30CXV1
FDYM28/30CXV1
FDB30CXV1
FDYB30CXV1
R(Y)30DXV1 /
R(Y)30DXY1
45
8 25
10
R(Y)25CXV1
9.52 / 3/8
15.88 / 5/8
R(Y)61DXY1
12.70 / 1/2
19.05 / 3/4