Rheem A17 Series Installation Instructions Manual page 12

4.0 INSTALLATION
Table 2A: Refrigerant Line Sizing Chart (English Units)
Allowable Allowable
Unit Size Liquid Line Vapor Line
Size
1/4"
5/16"
2.0 Ton
3/8"
** SEE
1/4" 3/4" *
NOTE 3
5/16" 3/4" *
3/8" 3/4" *
5/16"
3/8"
3 Ton 5/16"
3/8"
1/2"
3/8"
1/2"
4 Ton
3/8"
1/2"
3/8"
1/2"
5 Ton
3/8"
1/2"
Notes:
1) Do not exceed 150 ft linear line length.
2) *Do not exceed 50 ft vertical separation between indoor and outdoor units if the outdoor unit is above the indoor unit.
3) ** 3/4" vapor line should only be used for 2 ton systems if outdoor unit is below or at same level as indoor
unit to assure proper oil return.
4) Always use the smallest liquid line allowable to minimize refrigerant charge.
5) Applications shaded in light gray indicate capacity multipliers between 0.90 and 0.96 which are not
recommended, but are allowed.
6) Applications shaded in dark gray are not recommended due to excessive liquid or suction pressure drop.
12
17 SEER 2-Stage Air-Conditioners
Use Long Line
Guidelines for
Linear Line
Lengths
Greater
Size
Than Shown
Maximum Vertical Rise (Outdoor Unit Below Indoor Unit) * / Capacity Multiplier
Below
5/8" n/a
5/8" 73
5/8" 48
n/a
73
48
5/8" 20
5/8" 15
3/4" 20
3/4" 15
3/4" 0
3/4" 0
3/4" 0
7/8" 0
7/8" 0
3/4" 0
3/4" 0
7/8" 0
7/8" 0
Outdoor Unit ABOVE or BELOW Indoor Unit
Equivalent Length (Feet)
< 25 26-50
25 / 0.99 50 / 0.98
25 / 0.99 50 / 0.98
25 / 0.99 50 / 0.98
25 / 1.00 50 / 1.00
25 / 1.00 50 / 1.00
25 / 1.00 50 / 1.00
25 / 0.99 50 / 0.97
25 / 0.99 50 / 0.97
25 / 1.00 50 / 0.99
25 / 1.00 50 / 0.99
25 / 1.00 50 / 0.99
25 / 0.99 50 / 0.98
25 / 0.99 50 / 0.98
25 / 1.00 50 / 0.99
25 / 1.00 50 / 0.99
25 / 0.99 50 / 0.97
25 / 0.99 50 / 0.97
25 / 1.00 50 / 0.99
25 / 1.00 50 / 0.99
51-75 76-100 101-125
31 / 0.97 3 / 0.97
50 / 0.97 50 / 0.97 50 / 0.96
50 / 0.97 50 / 0.97 50 / 0.96
31 / 0.99 3 / 0.99
50 / 0.99 50 / 0.99 50 / 0.98
50 / 0.99 50 / 0.99 50 / 0.98
50 / 0.95 50 / 0.93 34 / 0.91
50 / 0.95 50 / 0.93 50 / 0.91
50 / 0.99 50 / 0.98 34 / 0.97
50 / 0.99 50 / 0.98 50 / 0.97
50 / 0.99 50 / 0.98 50 / 0.97
50 / 0.97 50 / 0.95 50 / 0.94
50 / 0.97 50 / 0.95 50 / 0.94
50 / 0.99 50 / 0.98 50 / 0.98
50 / 0.99 50 / 0.98 50 / 0.98
50 / 0.95 50 / 0.93 50 / 0.91
50 / 0.95 50 / 0.93 50 / 0.91
50 / 0.98 50 / 0.98 50 / 0.97
50 / 0.98 50 / 0.98 50 / 0.97
126-150
NR NR
50 / 0.95
50 / 0.95
NR NR
50 / 0.98
50 / 0.98
NR
NR
18 / 0.96
50 / 0.96
50 / 0.96
50 / 0.93
50 / 0.93
50 / 0.97
50 / 0.97
NR
NR
39 / 0.96
50 / 0.96