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127408-YIM-B-0606
Unitary Products Group 15
Note orientation. Panel is “insulation” side up.
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 16: Condensate Drain. 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 (19 mm) NPT female connection on the unit
to an open drain.
COMPRESSORS
The compressors are mounted on elastomer insulators. The
mounting bolts have been fully tightened for shipping.
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.
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 13 - SIDE PANELS WITH HOLE PLUGS
FIGURE 14 - RETURN DOWNFLOW PLENUM WITH
PANEL
FIGURE 15 - DISCHARGE PANEL IN PLACE
FIGURE 16 - CONDENSATE DRAIN
Do not loosen the compressor mounting bolts.
Make sure that panel latches are properly positioned
on the unit to maintain an airtight seal.
3 " M in im u m
(7 6 .2 m m )