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18 UNT-IOM-6
Cabinet units:
Install the bottom panel by placing the hinged end on the units hinged
end (always at the return end of the unit). See Figure 4 on page 15 for
keyslot hanger hole locations. Swing the panel upward into position.
Tighten the panel to the unit with the fasteners provided. Do not over-
tighten the fasteners.
Recessed units:
See Figure 5 on page 19 and follow the procedure below.
· Insert the mounting bolts through the panel brackets of the trim ring
and secure to the hanger holes on the unit. Tighten the mounting
bolts to pull the trim ring snug against the finished ceiling.
· Install the bottom panel by placing the hinged end on the trim ring
hinged end (always at the units return end).
· Adjust the inner duct of the expansion collar (on units with a bottom
return) to ensure a tight fit against the insulation located on the
perimeter of the bottom panels return louver.
· Safety chain assembly: close s-hook on each end of chain. Insert s-
hooks through holes in unit and door. Close s-hook on door.
· Insert retaining screws through bottom panel door and place
retaining rings on screws.
· Swing the bottom panel upward into position. Hook the safety chain
to the bottom panel and the unit. Tighten the panel to the unit with
the fasteners provided. Do not over tighten the removable front
access panel.
CAUTION: All unit panels and filters must be in
place prior to unit start-up. Failure to have panels and
filters in place may cause motor overload.
Note: The trim ring assembly cannot accomodate unlevel ceilings.
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