66399-YIM-C-0405
Unitary Products Group
17
CONDENSATE DRAIN
Plumbing must conform to local codes. Use a sealing
compound on male pipe threads. Install a condensate
drain line from the 3/4” NPT female connection on the
unit to an open drain.
NOTE:
The condensate drain operates in a negative
pressure in the cabinet. The condensate drain
line MUST be trapped to provide proper drain-
age. See Figure 1.
COMPRESSORS
Units are shipped with compressor mountings factory-
adjusted and ready for operation.
Units with scroll compressors have a shipping bracket
which must be removed after the unit is set in place.
See Figure 2.
FILTERS
One-inch or two-inch filters can be supplied with each
unit. Filters must always be installed ahead of the
evaporator coil and must be kept clean or replaced with
same size and type. Dirty filters will reduce the capacity
of the unit and will result in frosted coils or safety shut-
down. Minimum filter area and required sizes are
shown in Physical Data Tables 13, 15 & 17.
SERVICE ACCESS
The following removable panels provide access to all
serviceable components:
•
Compressor compartment
•
Electric Heat compartment
•
Gas Heat compartment (Two panels)
•
Side Supply & Return Air compartments
(Two panels)
•
Blower compartment (Three panels)
•
Main control box
•
Filter compartment
•
Outdoor Air compartment (Two panels)
Refer to the Dimensions and Clearances shown in Fig-
ures 10, 11, 13 and 14 for location of these access
panels.
FIGURE 1 - RECOMMENDED DRAIN PIPING
FIGURE 2 - COMPRESSOR RESTRAINING
BRACKET
WIRE TIE
(CUT AND
REMOVE)
MOUNTING
BRACKET TOP
(REMOVE)
MOUNTING
BRACKET BASE
REMOVE THESE
SCREWS (2)
COMPRESSOR
Do not loosen compressor mounting bolts.
Make sure that all screws and panel latches
are replaced and properly positioned on the
unit to maintain an airtight seal.
