18.104.22.168 Outdoor Unit Above Indoor Coil
For applications with the outdoor unit above the
indoor coil the following is required:
• Insulated liquid line in unconditioned space only.
• Follow the proper line sizing, maximum linear and
equivalent length, maximum vertical separation,
charging requirements, and oil level adjustments
spelled out in this document.
• Insulated vapor line full length.
• Verify at least 5°F [2.8ºC] of liquid subcooling at
the outdoor unit prior to expansion device in the