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WARNING
Danger of explosion. Keep flammable
materials and vapors, such as gasoline, away
from air handler. Place air handler so that
heating elements are at least 18 inches (46
cm) above the floor for a garage installation.
Failure to follow these instructions can result
in death, explosion, or fire.
IMPORTANT
Excessive condensation may occur if the unit is installed
in a warm, humid place. When the unit is installed in
an unconditioned space, apply sealant around the
electrical wires, refrigerant piping, and condensate
lines at the point where they enter the cabinet.
Apply sealant on the inside of the cabinet at the
point where the electrical wires exit through the
conduit opening. This will also keep warm and moist
unconditioned air out of the air handler cabinet where
it will form condensate on the cooler control box and
electrical controls.
IMPORTANT
This unit is approved for installation clearance to
combustible material as stated on the unit rating
plate. Accessibility and service clearances must take
precedence over combustible material clearances.
The air handler must be installed so that free access
is allowed to the coil/filter compartment and blower/
control compartment.
IMPORTANT
Horizontal applications of the air handler must be
installed sloped (approximately 5/8 inch) toward the
drain pan openings to ensure proper condensate
drainage.
Installation Clearances
Non-Ducted Return Closet Installation
The air handler can be installed in a closet with a false
bottom to form a return air plenum. It may also be installed
with a return air plenum under the air handler.
Page 4 of 22
Louvers or return air grilles are field-supplied. Local codes
may limit application of systems without a ducted return to
single-story buildings.
When a BCE3M*E unit is installed in a closet with a
louvered return opening, the minimum open area for the
louvers will be:
•
320 square inches for -024 models;
•
360 square inches for -030 and -036 models;
•
450 square inches for -042 thru -060 models.
If the free area is not known, assume a 25% free area for
wood or a 75% free area for metal louvers or grilles. Using
the louver dimensions and the 25% or 75% assumption,
determine if the open area meets the minimum open area
listed above.
If a return air plenum is used, the return air grille should be
immediately in front of the opening in the plenum to allow
for the free flow of return air. When not installed in front of
the opening, there must be adequate clearance around the
air handler to allow for the free flow of return air.
Installation
General Information
Improper installation, adjustment, alteration, service,
or maintenance can cause property damage, personal
injury, or loss of life. Installation and service must be
performed by a qualified installer or service agency.
These units are factory-assembled and configured for
installation in upflow or horizontal left-hand air discharge
applications. Horizontal drain pan may be repositioned in
the field to allow installation in the horizontal right-hand air
discharge position.
Each unit consists of a blower assembly, refrigerant coil,
and controls in an insulated galvanized steel factory-
finished enclosure. Knockouts are provided for electrical
wiring entrance.
For ease in installation, it is best to make any necessary
coil configuration changes before setting air handler in
place.
For all performance testing, units must be tested in the
upflow orientation with the horizontal drain pan removed.
Refrigerant Metering Device
These units are equipped with a factory-installed metering
device. Ensure the indoor coil metering device is properly
sized for the outdoor unit being used.
Issue 1810
WARNING
507623-02
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