Daikin Vision CAH 003-090 C Installation And Maintenance Manual page 12

Figure 19: Internal Fastening
Ceiling Hung
When a unit is ceiling hung, support it with a base rail, angle
iron, or channel . The Vision air handler is not designed to be
suspended from the top of the unit . Before hanging, rig and
completely assemble the unit . See
page 8 .
Ceiling Hung Using Base Rail
The optional base rail provided by the factory has 5/8" diameter
holes in each corner to run hanger rods through . To properly
support the unit and maintain unit integrity, support each
shipping section with hanger rods in each corner
Figure 20: Ceiling Suspended with Base Rail
IM 672-11 • VISION AIR HANDLING UNIT
Assembling Sections on
(Figure 20) .
Ceiling Hung Using Angle Iron Channel
Install field-provided angle iron or channels per SMACNA
guidelines . When a unit is unitized (ships in one piece), channel
support each component under the unit width
NOTE: The supporting angle iron must fully support the 2"
frame channel at each section joint .
When a unit is sectionalized (ships in multiple sections),
channel support each component under the unit width and
provide support under the full length of the unit base
22). Locate hanger rods so they do not interfere with access
into the unit .
Ceiling suspension using the unit base rails is limited
to unit cabinet widths less than 108" . Support units with
cabinets 108" wide and greater with structural members
designed to support the unit at the ends and at intermediate
points along the base rails .
Figure 21: Ceiling Suspended w/o Base Rail—
Unitized Construction
Figure 22: Ceiling Suspended w/o Base Rail—
Modular Construction
12
M I
eChanICal nsTallaTIon
(Figure 21) .
(Figure
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