Page 5 of 18
Issue 1324
507120-01
NOTE:
When the unit is installed in horizontal applications,
a secondary drain pan is recommended. Refer to local
codes.
NOTE:
This unit may be installed in left-hand or right-hand
air discharge horizontal applications. Adequate support
must be provided to ensure cabinet integrity. Ensure that
there is adequate room to remove service and access panels
if installing in the horizontal position.
Left-Hand Discharge
1. Determine knockouts required for drain line connections.
2. With access door removed, knock out drain line opening
for installing drain lines.
3. Set unit so that it is sloped toward the drain pan end of
the unit (see Figure 10).
4. The horizontal configuration is shown in Figure 3.
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 suppor the length of the
cabinet. Use securing screws no longer than 1/2 inch
to avoid damaging the coil or filter. See Figure 2. Use
sheet metal screws to connect the return and supply
air plenums as required
Right-Hand Air Discharge
For horizontal right-hand air discharge, the following field
modifications are require.
1. Remove and set aside blower and coil access covers.
2. Remove brachet(s) securing pan(s) to unit as illustrated
in Figures 4 and 5.
Figure 5
Remove both Horizontal & Main Drain Pan Brackets
Suspending Horizontal Unit
Figure 2
Figure 3
Left-Hand Discharge Configuration
Figure 4
Remove Main Drain Pan Mounting Bracket
(-018 through -036)
