Rheem ARL-JEZ 16 Seer Series, Installation Instructions Manual, Page: 9 / 40

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The thermostatic expansion valve is specifically designed to operate with R-410A.
DO NOT use an R-22 TXV or evaporator. The existing evaporator must be
replaced with the factory specified TXV evaporator specifically designed for
R-410A.
LOCATION
Do not install the indoor evaporator coil in the return duct system of a gas or oil fur-
nace. Provide a service inlet to the coil for inspection and cleaning. Keep the coil
pitched toward the drain connection.
INTERCONNECTING TUBING
VAPOR AND LIQUID LINES
Keep all lines sealed until connection is made.
Make connections at the indoor coil first.
Refer to Line Size Information in Tables 2 through 4 for correct size and multipliers to
be used to determine capacity for various vapor line diameters and lengths of run.
The losses due to the lines being exposed to outdoor conditions are not included.
The factory refrigeration charge in the outdoor unit is sufficient for 15 feet of inter-
connecting lines. The factory refrigeration charge in the outdoor unit is sufficient for
the unit and 15 feet of standard size interconnecting liquid and vapor lines. For dif-
ferent lengths, adjust the charge as indicated below.
1/4” ± .3 oz. per foot
5/16” ± .4 oz. per foot
3/8” ± .6 oz. per foot
1/2” ± 1.2 oz. per foot
OUTDOOR UNIT INSTALLED ABOVE INDOOR COIL
Keep the vertical separation between coils to a minimum. However, the vertical dis-
tance can be as great as 120 feet with the condensing unit ABOVE the indoor coil.
Use the following guidelines when installing the unit:
NOTE: If exceeding these measurements, the system must be an engineered sys-
tem.
OUTDOOR UNIT BELOW INDOOR COIL
Keep the vertical separation to a minimum. Use the following guidelines when
installing the unit:
1. DO NOT exceed the vertical separations as indicated on Table 4.
2. Always use the smallest liquid line size permitted to minimize system charge.
3. Table 4 may be used for sizing horizontal runs.
Vertical separation is limited to the total line length as defined in the liquid line sizing
charts.
Examples:
1. A 2-ton condensing unit with a 1/4" liquid line cannot exceed a total line length
of 25 ft.
2. A 3-ton unit with a 5/16" liquid line cannot exceed a total line length of 125 ft.
3. A 4-ton unit with a 5/16" liquid line cannot exceed a total line length of 50 ft.
IMPORTANT: Do not exceed a total line length of 125 feet in all systems.
!
CAUTION
When coil is installed over a finished ceiling and/or living area, it is recommend-
ed that a secondary sheet metal condensate pan be constructed and installed
under entire unit. Failure to do so can result in property damage.