Y-IM-Single Package AC and Single Package Gas/Electric Units ...

When fastening ductwork to side duct flanges on
unit, insert screws through duct flanges only. DO
NOT insert screws through casing. Outdoor ductwork
must be insulated and water-proofed.
FIGURE 13 - SIDE PANELS WITH HOLE PLUGS
Note orientation. Panel is “insulation” side up.
FIGURE 14 - RETURN DOWNFLOW PLENUM WITH
PANEL
FIGURE 15 - DISCHARGE PANEL IN PLACE
CONDENSATE DRAIN
167690-YIM-B-0606
The side condensate drain is reversible and maybe re-oriented
to the rear of the cabinet to facilitate condensate piping.
A condensate drain connection is available through the
base pan for piping inside the roof curb. Trap the connection
per Figure 16. The trap and drain lines should be protected
from freezing.
Plumbing must conform to local codes. Use a sealing compound
on male pipe threads. Install condensate drain line
from the 3/4 inch 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
! E E K
2 6 1 ) + 1
/ 7 ) 4 ,
FIGURE 16 - CONDENSATE DRAIN
Do not loosen the compressor mounting bolts.
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 filters
reduce the capacity of the unit and result in frosted coils
or safety shutdown. Refer to physical data tables, for the
number and size of filters needed for the unit. 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.
16 Unitary Products Group