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Roof Curb Installation — Rigging
Provisions for forks have been included in the unit base frame. No other fork locations are approved.
• Unit must be lifted by the four lifting holes located at the base frame corners.
• Lifting cables should be attached to the unit with shackles.
• The distance between the crane hook and the top of the unit must not
be less than 60".
• Two spreader bars must span over the unit to prevent damage to the
cabinet by the lift cables. Spreader bars must be of sufficient length
so that cables do not come in contact with the unit during transport.
Remove wood struts mounted beneath unit base frame before setting
unit on roof curb. These struts are intended to protect unit base frame
from fork lift damage. To remove the struts, extract the sheet metal
retainers and pull the struts through the base of the unit. Refer to
rigging label on the unit.
Important: If using bottom discharge with roof curb, duct-work should be
attached to the curb prior to installing the unit. Duct-work dimensions are
shown in Roof Curb Installation Instructions Manual.
Refer to the Roof Curb Installation Instructions for proper curb installation.
Curbing must be installed in compliance with the National Roofing
Contractors Association Manual.
Lower unit carefully onto roof mounting curb. While rigging the unit,
the center of gravity will cause the condenser end to be lower than the
supply air end.
Bring condenser end of unit into alignment with the curb. With condenser end of the unit resting on curb member and using
curb as a fulcrum, lower opposite end of the unit until entire unit is seated on the curb. When a rectangular cantilever curb is
used, take care to center the unit. Check for proper alignment and orientation of supply and return openings with duct.
To assist in determining rigging requirements, unit weights are shown below.
Curb installations must comply with local codes and should follow the established guidelines of the National Roofing Contractors
Association.
Proper unit installation requires that the roof curb be firmly and permanently attached to the roof structure. Check for adequate
fastening method prior to setting the unit on the curb.
Full perimeter roof curbs are available from the factory and are shipped unassembled. The installing contractor is responsible
for field assembly, squaring, leveling, and mounting on the roof structure. All required hardware necessary for the assembly of
the sheet metal curb is included in the curb accessory package.
• Determine sufficient structural support before locating and mounting the curb and package unit.
• Duct-work must be constructed using industry guidelines. The duct-work must be placed into the roof curb before mounting
the package unit. Our full perimeter curbs include duct connection frames to be assembled with the curb. Cantilevered-type
curbs are not available from the factory.
• Contractor furnishes curb insulation, cant strips, flashing, and general roofing material.
• Support curbs on parallel sides with roof members. To prevent damage to the unit, the roof members cannot penetrate
supply and return duct openings.
Note: The unit and curb accessories are designed to allow vertical duct installation before unit placement. Duct installation after
unit placement is not recommended.
See the manual shipped with the roof curb for assembly and installation instructions.
A
Condenser
Y
CONDENSER
Coil
COIL
Compressor
COMPRESSOR
B
X
20
Corner & Center-of-Gravity Locations
RETURN
Return
Evaporator Coil
EVAPORATOR COIL
CG
Supply
SUPPLY
www.amana-hac.com
C
Model
X (In) Y (In)
APG1660***M41
46.4
Model
APG1660***M41
D
Shipping
Operating
Weight
Weight
(Lbs)
(Lbs)
28.1
655
629
Corner Weights (Lbs.)
A
B
C
D
186
204
65
174
SS-APG16M
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