Lennox CBA27UHE-018 Installation Instructions Manual page 5

HORIZONTAL RIGHT-HAND DISCHARGE
APPLICATION
Use the following procedures to configure the unit for hor-
izontal right-hand discharge operations:
NOTE – For horizontal applications, a secondary drain
pan is recommended. Refer to local codes.
1 - Before operating the unit, remove access panels
and the horizontal drip shield (-060 model) and the
corrugated padding between the blower and coil
assembly. Discard the corrugated padding.
2 - Install the horizontal shield on the front edge of the
horizontal drain pan as illustrated in figure 2.
3 - No further adjustment is necessary. Set unit so that
it is sloped 1/4" towards the drain pan end of the
unit.
4 - If the unit is suspended, the entire length of the
cabinet must be supported. If you use a chain or
strap, use a piece of angle iron or sheet metal
attached to the unit (either above or below) to
support the length of the cabinet. Use securing
screws no longer than 1/2" to avoid damaging the
coil or filter as illustrated in figure 3. Use sheet
metal screws to connect the return and supply air
plenums as required.
UP-FLOW / DOWN-FLOW HORIZONTAL DRIP SHIELD (-060 MODELS)
DRAIN PAN
HORIZONTAL DRAIN
PAN
NO ADJUSTMENT IS NECESSARY
FIGURE 2. Right-Hand Discharge Configuration
HORIZONTAL RIGHT-HAND DISCHARGE
APPLICATION IN HIGH-HUMIDITY AREAS
For horizontal applications in high humidity areas, remove
the downflow rail closest to the drain pan.
To remove rail:
1 - Remove the screws from the rail at the back of unit
and at the cabinet support rail.
2 - Remove the downflow rail then replace screws.
3 - Seal around the exiting drain pipe, liquid line, and
suction line to prevent humid air from infiltrating into
the unit.
DOWN-FLOW RAIL
1/2" SCREWS MAXIMUM
ANGLE IRON OR
SHEET METAL
FRONT VIEW
FIGURE 3. Suspending Horizontal Unit
When removing the coil, there is possible danger of
equipment damage and personal injury. Be careful when
removing the coil assembly from a unit installed in right-
or left-hand applications. The coil may tip into the drain
pan once it is clear of the cabinet. Support the coil when
removing it.
HORIZONTAL LEFT-HAND DISCHARGE
APPLICATION
NOTE – For horizontal applications, a secondary drain
pan is recommended. Refer to local codes.
DRIP
SHIELD
CABINET
SUPPORT
DRAIN PAN
REINSTALLED
HERE
REINSTALLED HERE
COIL SHOWN IN UPLOAD POSITION FOR EASY CONVERSION
TOP
CAP
90º
BEND
FIGURE 4. Field Modification for
Left-Hand Discharge
Page 5
ELECTRICAL INLET CLEARANCE 4"
(102 mm)
END VIEW
IMPORTANT
TOP CAP ROTATED TO
CORRECT POSITION
TOP CAP SCREWS
90º
BEND
———— DRAIN PLUGS ————
REMOVED FROM HERE
ALIGN HOLES WITH
HOLES IN COIL END
PLATE. STARTING WITH
THE ROUND HOLES ON
THIS END.
BACK COIL END SEAL
DRAIN PAN
SHIPPING
LOCATION