Daikin R35DV1 - Refrigerant Piping

58
TM-FLH-0515-C
Refrigerant Piping
Maximum Piping Length 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 flow 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:
Piping Sizes (Flare Connection Type)
Piping sizes are as follows:
R22
Model
R15CV1
Liquid (mm/in) 6.35 / 1/4 6.35 / 1/4
9.52 / 3/8
Suction (mm/in)
12.70 / 1/2
15.88 / 5/8
15.88 / 5/8
Model
R28CV1
Liquid (mm/in)
9.52 / 3/8 9.52 / 3/8 9.52 / 3/8
Suction (mm/in)
15.88 / 5/8 19.05 / 3/4 19.05 / 3/4
Model
Liquid (mm/in) 6.35 / 1/4
RN15FV1
RN28CV1 RN35DV1 RN40DY1 RN50DY1 RN61DY1
RN20CV1
RN25CV1
6.35 / 1/4 6.35 / 1/4
Suction (mm/in) 12.70 / 1/2 12.70 / 1/2 15.88 / 5/8
Model
Liquid (mm/in)
9.52 / 3/8 9.52 / 3/8 9.52 / 3/8
Suction (mm/in)
15.88 / 5/8
9.52 / 3/8
15.88 / 5/8 15.88 / 5/8 15.88 / 5/8
R410A
12.7 / 1/2
19.05 / 3/4
R61DY1
9.52 / 3/8
19.05 / 3/4
R25CV1R18/20CV1
R50DY1
R35DV1/R40DY1
R30CV1
15.88 / 5/8
9.52 / 3/8
For R410A
For R22
Indoor
FL15EV1L
FH15CBV1L
FH15CBV1M
Outdoor
R15CV1
R18CV1 R20CV1 R20CV1 R25CV1 R28CV1 R30CV1
12 15 15 15 15 15 25
5 8 8 8 8 8 10
10 10 10 10 10 10 10
Maximum Length, m
Maximum Elevation, m
Maximum No. of Bends
Model
FL20EV1L
FH20CBV1L
FH20CBV1M
FL25EV1L
FH25CBV1L
FH25CBV1M
FH30CBV1L
FH30CBV1M
Indoor
FH50CBV1L
FH50CBV1M
FH61CBV1L
FH61CBV1M
Outdoor
R35DV1 R40DY1 R50DY1 R60DY1
45 45 45 35
25 25 25 15
10 10 10 10
FH40CBV1L
FH40CBV1M
Maximum Length, m
Maximum Elevation, m
Maximum No. of Bends
Model
Indoor
FLN15EV1L
FLN15EV1M
FLN20EV1L
FLN20EV1M
FLN25EV1L
FLN25EV1M
FLN30EV1L
FLN30EV1M
Outdoor RN15FV1 RN20CV1 RN25CV1 RN28CV1 RN35DV1 RN40DY1
20 20 20 25 45 45
10 10 10 8 25 25
10 10 10 10 10 10
Model
FLN40DV1L
FLN40DV1M
Maximum Length, m
Maximum Elevation, m
Maximum No. of Bends
Indoor
FLN50DV1L
FLN50DV1M
FHN62CV1L
FHN62CV1M
Outdoor RN50DY1 RN61DY1
45 35
25 15
10 10
Model
Maximum Length, m
Maximum Elevation, m
Maximum No. of Bends