14
INSTALLATION
Interconnecting Tubing (cont�)
Tubing
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
• 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
Inverted trap even with
top of the coil
Insulated liquid and
sucon line
Reference Table 2
for elevaon
limitaons
Figure 4
Indoor Unit Above Outdoor 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
• Follow the proper line sizing, equivalent length,
charging requirements, and oil level adjustments
spelled out in this document and the outdoor
units I&O
• Measure pressure at the liquid line service valve
and prior to expansion device� Verify that it is
not greater than 50 PSI
• For elevations greater that 25’ can expect a
lower sub-cooling
Figure 4
Summary of Contents for RA1418AJ1NA
Page 39: ...39 For Single Phase Models WIRING DIAGRAMS Wiring Diagrams...
Page 40: ...40 WIRING DIAGRAMS For Three Phase Models Wiring Diagrams...
Page 41: ...41 NOTES...
Page 42: ...42 NOTES...
Page 43: ...43 NOTES...
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