Rheem ARL-JEZ 16 Seer Series, Installation Instructions Manual, Page: 11 / 40

11
TABLE 2
SUCTION LINE LENGTH SIZE VS. CAPACITY MULTIPLIER (2-STAGE R-410A)
2 Ton
3/4" I.D. 3/4" I.D. 7/8" I.D. 7/8" I.D.
4 Ton 5 Ton Unit Size 3 Ton
Suction Line
Run Feet
5/8 3/4 3/4
3/4*
—
7/8* 7/8*
— —
5/8*
3/4
—
—
1.00
1.00
0.99
1.00
—
1.00
1.00
—
0.99
1.00
—
25'
Optional
Standard
Optional
—
0.99
1.00
0.98
0.99
—
0.98
0.99
—
0.98
0.99
—
50'
Optional
Standard
Optional
—
0.97
0.98
0.95
0.97
—
0.95
0.97
—
0.94
0.97
—
100'
Optional
Standard
Optional
—
0.95
0.97
0.91
0.95
—
0.93
0.95
—
0.91
0.95
—
150'
Optional
Standard
Optional
*Standard Line Size
Note: Using suction line larger than shown in chart will result in poor oil return.
• Use an appropriate heatsink material around the copper stub and the service
valves before applying heat.
• IMPORTANT: Do not braze any fitting with the TEV sensing bulb attached.
• Braze the tubing between the outdoor unit and indoor coil. Flow dry nitrogen
into a service port and through the tubing while brazing.
• After brazing:
• Use an appropriate heatsink material to cool the joint and remove any flux
residue.
• Clamp the TXV bulb securely on the suction line at the 2 o’clock position with
the strap provided in the parts bag.
• Insulate the TXV sensing bulb and suction line with the provided pressure
sensitive insulation (size 4" x 7") and secure with provided wire ties.
• NOTE: TXV SENSING BULB SHOULD BE LOCATED ON A HORIZONTAL
SECTION OF SUCTION LINE, JUST OUTSIDE OF COIL BOX.
• The service valves are not backseating valves. To open the valves, remove the
valve cap with an adjustable wrench. Insert a 3/16” or 5/16” hex wrench into the
stem. Back out counterclockwise.
• Replace the valve cap finger tight then tighten an additional 1/2 hex flat for a
metal-to-metal seal.
LEAK TESTING
• Pressurize line set and coil through service fittings with dry nitrogen to 150 psig
maximum. Leak test all joints using liquid detergent. If a leak is found, recover
pressure and repair.
!
WARNING
DO NOT USE OXYGEN TO PURGE LINES OR PRESSURIZE SYSTEM FOR
LEAK TEST. OXYGEN REACTS VIOLENTLY WITH OIL, WHICH CAN
CAUSE AN EXPLOSION RESULTING IN SEVERE PERSONAL INJURY OR
DEATH.
TABLE 3
ELBOW EQUIVALENT LENGTHS, FT.
Short Long
Size Radius Radius
1/4 0.4 0.2
5/16 0.5 0.3
3/8 0.5 0.3
1/2 0.6 0.4
5/8 0.8 0.6
3/4 0.9 0.8
7/8 1.0 1.0
1-1/8 1.2 1.2
1-3/8 2.1 1.4
1-5/8 2.5 1.5
Suction Line
Connection
Size