Daikin FTN25JXV1, Technical Manual

Page: 13 / 62

10
Application Information
Refrigerant Piping
Piping Length and Elevation
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:
Outdoor Unit
Indoor Unit
L E
Cooling Only Model
Model
Indoor FTN25JXV1 FTN25JXV1 FTN35JXV1 FTN35JXV1
Outdoor RN25CJXV1 RN25FXV1 RN35CJXV1 RN35FXV1
Min.Allowable Length (L), m 3
Max.Allowable Length (L), m 20 25 20 25
Max.Allowable Elevation (E), m 10 15 10 15
Gas Pipe Size, mm/(in) 9.52 / (3/8") 9.52 / (3/8") 12.70 / (1/2") 12.70 / (1/2")
Liquid Pipe Size, mm/(in) 6.35 / (1/4") 6.35 / (1/4") 6.35 / (1/4") 6.35 / (1/4")
Model
Indoor FTN50JXV1 FTN60JXV1 FTN80FXV1
Outdoor RN50CJXV1 RN60CJXV1 RR71CXV1 RR71CXY1
Min.Allowable Length (L), m 3
Max.Allowable Length (L), m 20 20 15 15
Max.Allowable Elevation (E), m 15 15 8 8
Gas Pipe Size, mm/(in) 12.70 / (1/2") 15.88 / (5/8") 15.88 / (5/8") 15.88 / (5/8")
Liquid Pipe Size, mm/(in) 6.35 / (1/4") 6.35 / (1/4") 9.52 / (3/8") 9.52 / (3/8")
Heatpump Model
Model
Indoor FTYN20JXV1 FTYN25JXV1 FTYN35JXV1 FTYN35JXV1
Outdoor RYN20CGXV1 RYN25CJXV1 RYN35CJXV1 RYN35CJHXV1
Min.Allowable Length (L), m 3
Max.Allowable Length (L), m 12 20 20 20
Max.Allowable Elevation (E), m 5 10 10 10
Gas Pipe Size, mm/(in) 9.52 / (3/8") 9.52 / (3/8") 12.70 / (1/2") 12.70 / (1/2")
Liquid Pipe Size, mm/(in) 6.35 / (1/4") 6.35 / (1/4") 6.35 / (1/4") 6.35 / (1/4")
Model
Indoor FTYN50JXV1 FTYN60JXV1 FTYN80FXV1
Outdoor RYN50CJXV1 RYN60CJXV1 RQ71CXV1 RQ71CXY1
Min.Allowable Length (L), m 3
Max.Allowable Length (L), m 20 20 15 15
Max.Allowable Elevation (E), m 15 15 8 8
Gas Pipe Size, mm/(in) 12.70 / (1/2") 15.88 / (5/8") 15.88 / (5/8") 15.88 / (5/8")
Liquid Pipe Size, mm/(in) 6.35 / (1/4") 6.35 / (1/4") 9.52 / (3/8") 9.52 / (3/8")