Rigging
WARNING
Use all lifting points . Improper lifting can cause severe
personal injury and property damage .
CAUTION
Lifting points may not be symmetrical to the center of gravity
of the unit . Ballast or unequal cable lengths maybe required .
DANGER
DO NOT LIFT FROM 2" HOLES AT ENDS OF UNIT . Failure
to comply may result in personal injury or death .
Vision air handlers ship as separate sections, completely
assembled, or in modules of assembled sections . The unit
must be rigged as it ships from the factory . Do not rig units
after assembly. When a unit is provided with a factory-installed
base rail, it can be lifted using the 2" diameter lifting holes
located in the corners of each shipping section (
Figure 3
) . If
a unit does not have a base rail, rig it using straps or a sling .
Fasten the strapping under the skid that ships with the section
(Figure 4) .
To prevent damage to the unit cabinetry, use spreader bars .
Position spreader bars to prevent cables from rubbing the frame
or panels . Before hoisting into position, test lift for stability and
balance. Avoid twisting or uneven lifting of the unit.
A fan array or coil section might have a tall, thin aspect ratio .
The center of balance on these sections can be high and make
the section prone to tipping during the lift . Care should be
taken when lifting units with a tall, thin aspect ratio.
Figure 3: Units on Base Rails
Figure 4: Units on Skids
Fan sections greater than 108" wide that are stacked
on another section that are not Class II plenum fans are
constructed with internal fan support frames that have integral
lifting brackets (
Figure 5
) . After the fan section is placed in
position, remove and discard the lifting brackets . Install the
small panels provided to complete the unit cabinet areas where
the lifting brackets were located.
Figure 5: Large Fan Sections Stacked on Top of a Lower
Section
IM 672-11 • VISION AIR HANDLING UNIT
6
www.DaikinApplied.com
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