Lennox Elite EL22XPV Series Installation Instructions Manual page 5

NOTE – Maximum lifts are dependent on total length,
number of elbows, etc. that contribute to total pressure
drop.
• Maximum length vapor riser = 60 feet.
• Up to 50 Linear Feet: Use rated line sizes listed in table
1.
• 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 2 on systems with
TABLE 2. Standard Refrigerant Line Set – Up to 50 Linear Feet in Length
EL22XPV*
-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 3. EL22XPV 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 4. Liquid Line Diameter Selection Table
25
25
25
25
25
25
25
25
25
line sets longer than 51 feet. Use tables 2 and 3 to de-
termine the correct liquid and vapor line sizes.
• Over 150 Linear Feet: not recommended.
• 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
L15-41-20
L15-65-30
L15-65-40
L15-65-50
Field-fabricated
Maximum Suction
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 5
Recommended Line Sets
Line Set Length
20 feet (6.1 m)
30 feet (12.2 m)
40 feet (15.2 m)
50 feet (15.2 m)
Preferred
Maximum Suction 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
89J56
89J57
89J58
89J59
Required Suction
Riser Size
5/8"
3/4"
7/8"
7/8"
150
33
60
45
60
22
60
NR
59