Rheem RA1460AJ1NA Installation Instructions Manual page 14

INSTALLATION
Interconnecting Tubing (cont�)
For applications that are considered to have a long
line set with the outdoor unit and indoor unit on the
same level the following is required:
• TXV or EEV on the indoor unit
• Start components may be required depending
upon quality of voltage
• Crankcase heater
• Insulated liquid and suction line
Inverted trap even with
top of the coil
For applications that are considered to have a long
line set with the outdoor unit below the indoor unit
the following is required:
• TXV or EEV at the IDunit
• Crankcase heater
• Start components may be required depending
upon quality of voltage
• Inverted vapor-line trap (Reference Figure 3)
• Insulated liquid and suction line
14
Indoor Unit Above Outdoor Coil
Figure 4
Figure 4
• Follow the proper line sizing, equivalent length,
• Measure pressure at the liquid line service valve
• For elevations greater that 25' can expect a
• Vapor line should slope toward the indoor unit
• Follow the proper line sizing, equivalent length,
charging requirements, and oil level adjustments
spelled out in this document and the outdoor
units I&O
• Verify adequate sub-cooling at the ID unit prior
to throttling device
Insulated liquid and
suc on line
Reference Table 2
charging requirements, and oil level adjustments
spelled out in this document and the outdoor
units I&O
and prior to expansion device� Verify that it is
not greater than 50 PSI
lower sub-cooling
for eleva on
limita ons