11
PN 20009722 REV E, [02/11/2015]
FEATURES
Mounting Method
• In existing construction, remove enough ceiling panels
to provide clearance space for mounting unit to ceiling
joists.
• Before beginning installation, inspect unit location, test
strength of ceiling joists to ensure they will support unit
weight.
• Determine mounting method:
A. Wooden beams use threaded rods, washers, and
nuts to suspend support brackets.
B. Metal structures, secure threaded rods on existing
angle or install new support angle.
C. Newly built concrete slabs secure threaded rods
with inserts and embedded bolts.
D. For previously built concrete slabs install hanging
bolts with expansion anchor
• Follow local building codes for required safety cables,
braces, etc.
Mounting
1.
Use template to cut ceiling opening and determine rod
positions. See Figure 8, Page 10.
2.
Install hanger bolts using 3/8” (10mm) all-thread rod
at centers. See Table 2.
3.
Prepare installation guides by folding metal bracket by
hand along perforations. See Figure 9.
4.
Lift cassette onto hanging rods.
5.
Level at correct distance from ceiling with aid of
installation guides. See Figure 10.
6.
Secure unit in position with locknuts and washers on
either side of cassette bracket.
7.
Insure threaded rod does not protrude more than 2”
(51mm) below mounting bracket. See Figure 11.
8.
If ceiling is not level or even, install cassette level to
ensure correct pump operation and to maintain fan
clearances.
9.
Place carpenter’s level on unit.
10.
Maximum slope of 1/8” (3mm) over length of chassis
toward condensate drain is allowed. Slight discrepancy
between cassette and ceiling will be taken up by fascia
foam seal.
Model
Dimensions A
Dimensions B
08 & 12
19.50” (495mm)
22.87” (581mm)
18 & 20
29.19” (740mm)
30.80” (782mm)
33 & 36
29.19” (740mm)
43.06” (1094mm)
Figure 9 - Mounting Brackets
Table 2 - Ceiling Rod Positions
Figure 10 - Positioning Installation Guides
Figure 11 -Threaded Rods Must Not Protrude
More Than 2 Inches Below Mounting
Brackets
