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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
R25CV1
R18/20CV1
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
Summary of Contents for FH15CBV1L
Page 1: ...Ceiling Exposed TM FLH 0515 C TECHNICAL MANUAL...
Page 54: ...52 TM FLH 0515 C Figure 2 Figure 3...
Page 55: ...53 TM FLH 0515 C Figure 4 Figure 5...
Page 69: ...67 TM FLH 0515 C Outdoor Unit Model R18 20CV1 Indoor Unit Model FH20CBV1L FH20CBV1M...
Page 72: ...70 TM FLH 0515 C Indoor Unit Model FLN30EV1L FLN30EV1M Outdoor Unit Model RN28CV1...
Page 73: ...71 TM FLH 0515 C Outdoor Unit Model R35DV1 Indoor Unit Model FH40CBV1L FH40CBV1M...
Page 74: ...72 TM FLH 0515 C Indoor Unit Model FLN40DV1L FLN40DV1M Outdoor Unit Model RN35DV1...
Page 75: ...73 TM FLH 0515 C Model R40 50DY1 Model FH40 50CBV1L FH40 50CBV1M...
Page 76: ...74 TM FLH 0515 C Model RN40 50DY1 Model FLN40 50DV1L FLN40 50DV1M...
Page 77: ...75 TM FLH 0515 C Model R61DY1 Model FH61CBV1L FH61CBV1M...
Page 78: ...76 TM FLH 0515 C Model RN61DY1 Model FHN62CV1L FHN62CV1M...
Page 86: ...84 TM FLH 0515 C FL15 20 25EV1L FLN15 20 25 30EV1L Note Dimension in mm...