507838-01
Issue 1813
Page 5 of 19
Upflow Application
Use the following procedures to configure the unit for
upflow operations:
1. Remove access panels.
2. Remove and discard the horizontal drip shield (-060
model, used only on horizontal applications) and
the corrugated padding between the blower and coil
assembly.
3. The horizontal drain pan must be removed when the
coil blower is installed in the upflow position. Removing
the horizontal drain pain will allow proper air flow and
increased efficiency.
4. After removing the horizontal drain pan, place the
unit in the 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.
5. 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. An optional upflow unit stand is listed in Table
Model
Kit Number
All Sizes
45K32
Table 1. Optional Side-Return Unit Stand
(Upflow Only)
HORIZONTAL DRAIN PAN
(MUST BE REMOVED)
UP-FLOW /
DOWN-FLOW
DRAIN PAN
Figure 1.
Upflow Configuration
Horizontal Right-Hand Discharge Application
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.
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
DRAIN PAN
HORIZONTAL DRIP SHIELD (-060 MODELS)
DOWN-FLOW RAIL
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.
FRONT VIEW
END VIEW
ANGLE IRON OR
SHEET METAL
ELECTRICAL INLET CLEARANCE 4"
(102 mm)
1/2" SCREWS MAXIMUM
Figure 3. Suspending Horizontal Unit
