2
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning
equipment can be hazardous due to system pressures,
electrical components, and equipment location (roofs, elevated
structures, etc.).
Only trained, qualified installers and service mechanics
should install, start-up, and service this equipment (Fig. 1 to Fig.
4).
Untrained personnel can perform basic maintenance
functions such as cleaning coils. Trained service personnel
should perform all other operations.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
Follow all safety codes. Wear safety glasses and work
gloves. Keep quenching cloth and fire extinguisher nearby when
brazing. Use care in handling, rigging, and setting bulky
equipment.
INSTALLATION
Step 1 – Complete Pre-Installation Checks
UNCRATE UNIT – Remove plastic cover, which should be left
in place until after the unit is rigged into its final location.
INSPECT SHIPMENT – File claim with shipping company if
shipment is damaged or incomplete.
CONSIDER SYSTEM REQUIREMENTS
• Consult local building codes and National Electrical
Code (NEC) for special installation requirements.
• Allow sufficient space for airflow clearance, wiring,
refrigerant piping, and servicing unit. See Fig. 1 to Fig. 3 for
unit component locations.
• Locate unit so that outdoor coil (condenser) airflow is
unrestricted on all sides and above.
• Unit may be mounted on a level pad directly on the base
channels or mounted on raised pads at support points. See
Tables 2A-2B for unit operating weights. See Table 1 for
weight distribution based on recommended support points.
NOTE: If vibration isolators are required for a particular
installation, use the data in Table 1 to make the proper
selection.
Table 1 - Weight Distribution
UNIT WEIGHT - lb (kg)
38AKS Total Support Point
Operating A B C D
016 789 (359) 143 (65) 143 (65) 250 (114) 253 (115)
024 900 (408) 178 (81) 168 (76) 269 (122) 285 (129)
028 1650 (748) 418 (190) 626 (284) 242 (110) 364 (165)
034 1803 (818) 459 (208) 673 (305) 272 (124) 399 (181)
044 2347 (1105) 864 (392) 1077 (488) 221 (100) 275 (125)
38AKS016 and 024 38AKS028 and 034
Step 2 – Rig and Mount the Unit
RIGGING – These units are designed for overhead rigging only.
For this purpose, the transverse base channels extend beyond the
sides of the unit, with holes provided in the end plates to attach
cables or hooks. Rig with top skid packaging assembly in place to
prevent unit damage by the rigging cable. As further protection for
the coil faces, plywood sheets can be placed against the sides of
the unit, behind the cables. Run the cables to a central position
point so that the angle from the horizontal is not less than 45
degrees. Raise and set the unit down carefully.
CAUTION
Be sure unit panels are securely in place prior to rigging.
ELECTRIC SHOCK HAZARD
Separate power sources (main and control
power circuits) are used for these units. Be
sure both main and control power circuits are
disconnected before servicing.
(11 pages)
(286 pages)
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