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335224-BIM-B-1208
When fastening ductwork to side duct flanges on
unit, insert screws through duct flanges only. DO
NOT insert screws through casing. Outdoor duct-
work must be insulated and water-proofed.
FIGURE 19 - SIDE PANELS WITH HOLE PLUGS
Note orientation. Panel is "insulation" side up.
FIGURE 20 - RETURN DOWNFLOW PLENUM WITH
PANEL
FIGURE 21 - DISCHARGE PANEL IN PLACE
18
CONDENSATE DRAIN
The side condensate drain is reversible and maybe re-ori-
ented to the rear of the cabinet to facilitate condensate pip-
ing. A condensate drain connection is available through the
base pan for piping inside the roof curb. Trap the connection
per Figure 22. The trap and drain lines should be protected
from freezing.
Plumbing must conform to local codes. Use a sealing com-
pound on male pipe threads. Install condensate drain line
from the 3/4 inch NPT female connection on the unit to an
open drain.
O P T I O N A L C O I L
G U A R D
3 " M i n i m u m
FIGURE 22 - CONDENSATE DRAIN
COMPRESSORS
The compressors are mounted on elastomer insulators. The
mounting bolts have been fully tightened for shipping.
Do not loosen the compressor mounting bolts.
FILTERS
Two-inch filters are supplied with each unit. One-inch filters
may be used with no modification to the filter racks. Filters
must always be installed ahead of evaporator coil and must
be kept clean or replaced with same size and type. Dirty fil-
ters reduce the capacity of the unit and result in frosted coils
or safety shutdown. All units use four (4) 20"x25"x2" filters.
The unit should not be operated without filters properly
installed.
Make sure that panel latches are properly positioned
on the unit to maintain an airtight seal.
Johnson Controls Unitary Products
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