6
Numbers in [brackets] are for 50 Hz international systems.
Pub. No. 18-HE53D1-7
Installer’s Guide
DOWNFLOW FURNACE INSTALLATION
NOTE: On 90% Downflow Furnaces, the intake and
exhaust (flue) are located on top. A field supplied
transition is needed between the furnace and the air
cleaner. The transition must be long enough to avoid
any interference between the intake and exhaust pipe
routing and the door of the air cleaner. The door and
internal components must be removable for servicing.
1.
Rotate the two quarter turn latches on the Power Door
outward then rotate the Power Door to remove it from
the cabinet. Remove the PRE-FILTER, FIELD
CHARGER, and both COLLECTION CELLS. Set the
components aside until the cabinet is installed and the
indoor unit is in place.
NOTE: Cut the front duct flange 2" from each side and
fold flat to clear the Power Door latches. Some applica-
tions may require a transition for piping clearances.
See Figure 19.
NOTE: Remove filter rack from downflow Furnace and
discard.
2.
Bend the 4 mounting tabs down on the two sides of the
air cleaner cabinet. These can be used to attach the air
cleaner cabinet to the furnace. See Figure 20.
3.
Install the self-adhesive gasket material on the side of
the air cleaner cabinet flange that will mate with the
indoor unit. This flange has a double set of holes. See
Figure 16.
UPFLOW AIR HANDLER APPLICATIONS ONLY
9. Position the baffle onto the air cleaner as indicated in
Figure 17. The baffle should be positioned on the
leaving air side of the air cleaner cabinet opposite the
power door. Ensure that the bracket is located
correctly inside the air cleaner enclosure so that the
baffle or screws do not interfere with the filter cell
installation. (See Figure 17 inset.)
NOTE: The upflow air handler baffle is required
to protect the air cleaner in the event of a drain
pan overflow. This baffle is required for all
upflow air handler installations.
10. Install unit in place and secure.
11. Reinstall the FIELD CHARGER and lock into place by
bending one locking tab on the cabinet. See Figure 18.
12. Reinstall the PRE-FILTER and COLLECTION CELLS.
13. Each cell must be oriented with handles toward the front.
14. The door can be installed in
either direction
. Deter-
mine which direction will best allow access to the
latches and 24 Volt power cord. Insert the 2 tabs on
the door into the slots in the cabinet flange and rotate
the door into the closed position. Rotate the two
quarter-turn latches on the Power Door inward. See
Door Operation Section C.
15. Remove stickers (two stickers both are 5.5" x 7.5")
from packet and attach to furnace, air handler, or
ductwork in a location visible to the homeowner.
16. Demonstrate Maintenance (Section H) and Door
Operation (Section C) to the homeowner.
Figure 20 Mounting Tabs
Figure 19 Duct Flanges
Figure 18 Locking Tab
Attach upflow air
handler baffle to air
cleaner and air
handler using the
self-tapping sheet
metal screws
provided.
Be sure tab at end
of baffle is
INSIDE
the channel before
attaching.
AIRFLOW
Figure 17 Upflow Air Handler Baffle Installation Details
Field Charger Locking Tab
Actuator Tab for
Interlock Switch
