16
4.0 INSTALLATION
Tubing
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
ST-A1219-01-01
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.
INSULATED SUCTION LINE FULL LENGTH
REFERENCE TABLE 2 FOR
MAXIMUM LENGTH LIMITATIONS
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
•
Suction line should slope toward the indoor unit.
(Reference Figure 3)
•
Follow the proper line sizing, maximum linear and
equivalent length, charging requirements, and oil
level adjustments spelled out in this document.
•
Verify at least 5°F [2.8°C] sub-cooling at the indoor
unit prior to expansion device.