4.5 Line Set Installation (cont.)
4.5.2 Relative Location of Indoor and Outdoor Units
4.5.2.1 Outdoor Unit Level or Near Level to Indoor Coil Line Set
Figure 3
For applications with the outdoor unit and indoor
unit on the same level the following is required:
• Insulated liquid line in unconditioned space only.
• Insulated vapor line full length.
• Vapor line should slope toward the indoor unit.
(Reference Figure 3)
REFERENCE TABLE 2 FOR
MAXIMUM LENGTH LIMITATIONS
INSULATED VAPOR LINE FULL LENGTH
• Follow the proper line sizing, maximum linear
• Verify at least 5°F [2.8°C] sub-cooling at the
4.0 INSTALLATION
IDEALLY, LINE SET SLOPES AWAY
FROM OUTDOOR UNIT. VERIFY
SUB-COOLING PRIOR TO EXPANSION
DEVICE, INSULATED LIQUID LINE IN
UNCONDITIONED SPACE FOR
LONG LINE APPLICATIONS.
ST-A1219-01-01
and equivalent length, charging requirements,
and oil level adjustments spelled out in this docu-
ment.
indoor unit prior to expansion device.
17
Need help?
Do you have a question about the FO20R Series and is the answer not in the manual?