Lennox EL23XCV Series Manual page 15

• Between 51 and 150 Linear Feet: Crankcase heater
and nonbleed port TXV factory installed. No additional
components required. Vertical vapor riser must be sized
to the vapor riser listed in the table 4 on systems with
line sets longer than 51 feet. Use tables 4 and 5 to de-
termine the correct liquid and vapor line sizes.
• Over 150 Linear Feet: not recommended.
TABLE 3. Standard Refrigerant Line Set – Up to 50 Linear Feet in Length
EL23XCV*
-024
-036
-048
-060
* Applicable to all minor revision numbers unless otherwise specified.
** Some applications may require a field-provided 1-1/8" to 7/8" adapter.
TABLE 4. EL23XCV Line Set Guidelines – 51 to 150 Linear Feet in Length
Maximum Total
Model
Equivalent Length (ft)
Unit Line Size
5/16"
3/8"
3/8"
1/2"
3/8"
1/2"
3/8"
1/2"
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 Total 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).
Valve Size Connections
Liquid Line Suction Line
3/8" (10 mm) 3/4" (19 mm)
3/8" (10 mm) 7/8" (22 mm)
3/8" (10 mm) 1-1/8" (29 mm) **
Maximum Linear
(actual) Length (ft)
180 150
180 150
180 150
180 150
TABLE 5. Liquid Line Diameter Selection Table
25
25
25
25
25
25
25
25
25
• Additional oil is not required for systems with line lengths
up to 150 feet.
SUCTION TRAPS
For systems with the outdoor unit 5 - 60 feet above the
indoor unit, one trap must be installed at the bottom of the
suction riser.
Inches (mm)
L15 Line Set Model
L15-41-30
L15-65-40
L15-65-50
Field-fabricated
Maximum Vapor
Linear Liquid
Riser (ft)
60
60
60
60
Total Linear Length (feet)
50 75
50 55
50 60
50 60
50 60
50 50
50 60
50 36
50 60
Page 15
Recommended Line Sets
Line Set Length
30 feet (9.1 m)
40 feet (12.2 m)
50 feet (15.2 m)
Preferred
Maximum Vapor Line
Sizes for
Lift (ft) Horizontal
Runs
60 7/8"
60 7/8"
60 7/8"
60 7/8"
100 125
48 40
60 60
56 51
60 60
41 31
60 60
22 8
60 60
Catalog Number
89J60
89J61
89J62
Required Vapor
Riser Size
5/8"
3/4"
7/8"
7/8"
150
33
60
45
60
22
60
NR
59