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TABLE 1. Standard Refrigerant Line Set – Up to 50 Linear Feet
Inches (mm)
Valve Size Connections Recommended Line Sets
SL28XCV*
Liquid Line Suction Line L15 Line Set Model Line Set Length Catalog Number
-024
L15-65-30 30 feet (9.1 m) 89J60
-036
-048
3/8” (10 mm)
7/8” (22 mm)
L15-65-40 40 feet (12.2 m) 89J61
L15-65-50 50 feet (15.2 m) 89J62
-060 3/8” (10 mm) 1-1/8” (29 mm) ** Field-fabricated
* Applicable to all minor revision numbers unless otherwise specified.
** Some applications may require a field-provided 1-1/8” to 7/8” adapter.
TABLE 2. SL28XCV Line Set Guidelines – Between 51 - 150 Feet Linear Length
Model
Maximum Total
Equivalent Length (ft)
Maximum Linear
(actual) Length (ft)
Maximum Vapor
Riser (ft)
Maximum
Linear Liquid
Lift (ft)
Preferred
Vapor Line
Sizes for
Horizontal
Runs
Required Vapor
Riser Size
180 150 60 60 7/8” 5/8”
180 150 60 60 7/8” 3/4”
180 150 60 60 7/8” 7/8”
180 150 60 60 7/8” 7/8”
TABLE 3. Liquid Line Diameter Selection Table
Unit Line Size
Total Linear Length (feet)
25 50 75 100 125 150
5/16”
25
50 55 48 40 33
Max. Elevation
(ft)
3/8”
25
50 60 60 60 60
3/8”
25
50 60 56 51 45
1/2”
25
50 60 60 60 60
3/8”
25
50 50 41 31 22
1/2”
25
50 60 60 60 60
3/8”
25
50 36 22 8 NR
1/2”
25
50 60 60 60 59
Shaded rows indicate rated liquid line size
A. Find your unit on the left side of the table.
B. Start with the rated liquid line size (shaded row) on the outdoor unit
C. Select the actual To tal Linear Length of your system shown at the top of the table.
D. The elevation listed in the table is the maximum allowed for the liquid line listed.
E. Select or consider the larger liquid line size shown in the table if the elevation does not meet your requirements.
NOTE - For new or replacement line set installation, refer to Service and Application Note - Corp. 9112-L4 (C-91-4).
CAUTION
Brazing alloys and ux contain materials which are
hazardous to your health.
Avoid breathing vapors or fumes from brazing operations.
Perform operations only in well-ventilated areas.
Wear gloves and protective goggles or face shield to
protect against burns.
Wash hands with soap and water after handling brazing
alloys and ux.
WARNING
Danger of re. Bleeding the refrigerant
charge from only the high side may result
in pressurization of the low side shell and
suction tubing. Application of a brazing torch
to a pressurized system may result in ignition
of the refrigerant and oil mixture. Check the
high and low pressures before applying heat.
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