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CBX32MV
HORIZONTAL DRAIN
PAN (MUST BE
REMOVED)
UPFLOW/
DOWNFLOW
DRAIN PAN
Figure 1. Upflow Configuration
NOTE -
(-068 model Only)
Remove access panels and the
horizontal drip shield along with the corrugated padding
between the blower and coil assembly before operation.
Discard drip shields from the foam pads on top of the unit.
Shields are used for downflow applications only.
1.
The horizontal drain pan must be removed when the
coil blower is installed in the upflow position. Removing
horizontal drain pain will allow proper airflow and
increase efficiency.
2.
After removing horizontal drain pan, place the unit in
desired location. Set unit so that it is level. Connect
return and supply air plenums as required using sheet
metal screws as illustrated in Figure 1.
3.
Install units that have no return air plenum on a stand
that is at least 14” from the floor to allow for proper air
return. Lennox offers an optional upflow unit stand as
listed in Table 1.
Table 1. Optional Unit Side Stand (Upflow Only)
Models
Kit Numbers
-018/024
45K31
-024/030, -036, -048 and -060
45K32
HORIZONTAL RIGHT-HAND DISCHARGE APPLICATION
NOTE -
When air handler is located above a finished space,
the secondary drain pan must have a larger footprint than
the air handler.
In addition, a 3/4” (19.1MM) overflow drain
line must be:
Connected to secondary drain pan
or
Connected to the overflow drain outlet of the air handler
drain pan.
Use the following procedures to configure the unit for
horizontal right-hand discharge operations:
NOTE -
For horizontal applications, a secondary drain pan
is recommended. Refer to local codes.
NOTE -
(-068 Model Only)
Before operating the unit,
remove access panels and the horizontal drip shield and
the corrugated padding between the blower and coil
assembly. Discard the corrugated padding and the
downflow drip shields from the foam pads on top of the unit.
NOTE -
(-068 Model Only)
Install the horizontal shield on
the front edge of the horizontal drain pan as illustrated in
Figure 2.
4.
No further adjustment is necessary. Set unit so that it is
sloped 1/4 inch (6.35mm) towards the drain pan end of
the unit.
NO ADJUSTMENT IS NECESSARY
HORIZONTAL DRIP SHIELD (-068
MODELS)
UP-LOAD / DOWNFLOW
DRAIN PAN
HORIZONTAL DRAIN
PAN
DOWNFLOW RAIL
Figure 2. Right-Hand Discharge Configuration
5.
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 inch
(12.7mm) to avoid damaging the coil or filter as
illustrated in Figure 4. Use sheet metal screws to
connect the return and supply air plenums as required.
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.
