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F50E DUCT MOUNTED ELECTRONIC AIR CLEANER
68-0072—5
14
Fig. 26. Crimp End Of Unused Prefilter Guide.
Position Cell Key
❑ The electronic cells must always be installed so the ionizer
section is on the upstream side. A factory-installed cell key
on the bottom of the cabinet allows the cells to be inserted
in only one direction. As long as the arrow molded into the
plastic key points the same direction as the airflow, the
ionizer is always on the upstream side.
❑ If the position of the key must be reversed, proceed as
follows:
1. Remove electronic cells.
2. Loosen the screw holding the cell key in place. See
Fig. 27.
3. Turn the key around and place it over the opposite
holes. The tab on the bottom fits into the larger hole,
and the screw fits into the smaller hole. Make sure the
arrow on the key points in the direction of air flow
(downstream).
4. Tighten the screw.
5. Insert the electronic cells. The ionizer section is now on
the air-entering (upstream) side of the cabinet.
Attach Cell Handles
❑ The cell handles are included in the packet of literature.
They must be installed on the end of the cells that will be
closest to the access door. To install:
1. Orient the cells as they will be when installed. The red
contact board must be up and the airflow arrow
stamped into the cell must point downstream.
2. Hold the handle sideways and insert the solid tab on
the back of the handle into the slot in the cell. Turn the
handle 90 degrees clockwise to align the divided tab
with the square hole. See Fig. 28.
3. Insert the divided tab into the square hole.
4. Fold up the wedge and insert into the divided tab to lock
the handle in place. When necessary, press with a blunt
instrument like the end of a pliers.
PREFILTER GUIDES
CELL KEY
M5639
CELL
KEY
ALTERNATE
HOLES FOR
KEY
CELL KEY
SCREW
DOWNSTREAM
AIRFLOW
Fig. 27. Position of cell key determines orientation of cell.
Arrow on key must point downstream.
M6047A
ROTATE 90
DEGREES
FOLD TAB
TO LOCK
HANDLE
IN PLACE
INSTALL HANDLE ON END OF CELL
CLOSEST TO ACCESS DOOR.
Fig. 28. Install handle on end of cell that will be
closest to access door.
Reassemble Air Cleaner
❑ Insert the electronic cells with the red contact board up
and the airflow arrow pointing downstream. If the cells do
not slide easily into the cabinet, check the orientation of
the cell key.
❑ Insert the prefilters on the upstream side of the cabinet in
the guides provided.
❑ Replace the access door. Insert the tab on the bottom of
the door into the slot in the cabinet, then swing closed and
press into place. See Fig. 29. The door must be firmly in
place or the air cleaner will not operate.
❑ If the cell washing schedule on the power box is not
conveniently located, mount the schedule from the
literature package on the furnace or other convenient
location near the air cleaner.
M4700
ELECTRONIC AIR CLEANER