10
PN 20009722 REV F, [08/01/2020]
UNIT MOUNTING
Positioning
Select cassette installation position.
1.
Pipe work, electrical connections, control box and
condensate pump access panels should be readily
accessible. Refer to cassette dimensions. See Figures 1,
2 & 3.
2.
Position unit at least 5 ft. (1.5 m) from wall or similar
obstruction, and at least 8 ft (2.4 m) from the floor or
grade.
3.
Position unit as close to center of room as possible to
insure even air distribution.
4.
Position unit so discharge air does not blow directly on
remote wall wired thermostat, if used.
5.
Do not position unit directly above any obstructions.
6.
Verify Condensate drain has sufficient fall — 1 in per
10 ft (8 mm per 1 m) in any horizontal run between
cassette and drain.
7.
Maximum condensate pump lift is 36 in (0.9 m) from
bottom of unit.
8.
Maintain minimum 1 in (25.4 mm) clearance above
cassette depth and false ceiling for proper installation.
See Figure 7.
9.
Cut opening in false ceiling using size shown in Table 1.
Wired Wall Thermostat (not supplied)
Locate wired wall mounted thermostat to ensure good
temperature control. Select installation position.
1.
Position thermostat approximately 5 ft. (1.5 m) above
floor level.
2.
Avoid external walls and drafts from windows and
doors.
3.
Avoid positioning near shelves and curtains as these
restrict air movement.
4.
Avoid heat sources (direct sunlight, heaters, dimmer
switches, etc.)
5.
Seal wiring holes in wall behind thermostat to avoid
drafts.
NOTICE
Verify ceiling grid is supported separately from
cassette. Do not support ceiling by any part of
cassette unit, fascia or any associated wiring or pipe
work.
CAUTION
Mount unit with lowest moving parts at least 8 feet
above floor or grade, to avoid contact with moving
parts. Failure to follow these instructions could
result in minor or moderate injury.
!
!
Model
Dimensions
08 & 12
23 ¼ in x 23 ¼ in (591 x 591 mm)
18 & 20
33 ⅞ in x 33 ⅞ in (860 x 860 mm)
33 & 36
33 ⅞ in x 46 in (860 mm x 1168 mm)
Figure 7 - Spacing Requirements
Dimension A + 1 in = Minimum Space Above False
Ceiling For Installation
Figure 8 - Ceiling Cutout/Rod Placement
Template (Shipped With Unit)
Model
Dimensions A
08 & 12
12 3/8 in (314 mm) min.
18 & 20
15 3/8 in (390 mm) min.
33 & 36
15 3/8 in (390 mm) min.
Table 1 - Ceiling Opening Sizes
Ceiling Opening
