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INSTALLATION
1. Disconnect power to the furnace or air handler at the electrical
service panel
ELECTRIC SHOCK HAZARD: 120 volts may cause serious injury
from electric shock. Disconnect electrical power to the HVAC
system before starting installation or servicing. Leave power
disconnected until installation/service is completed.
2. Remove the air cleaner door from the outer housing and pull out
the filter (see FIGURE 5)
3. If replacing an existing filter or air cleaner, remove the old unit from
the system and thoroughly clean the blower compartment.
4. Cut an opening in the furnace/air handler to match the inside
opening of the air cleaner outer housing Ensure the opening in the
furnace/air handler is entirely within the blower compartment.
5. Use screws (field supplied) to mount the outer housing to the
furnace/air handler There is no inlet or outlet side on the outer
housing (the outer housing can be mounted on the left or right side
of the furnace/air handler)
NOTE FOR UPFLOW INSTALLATIONS: Provide support under the outer
housing to ensure the quality of the seals (see FIGURE 6)
6. Mount the return ductwork to the outer housing
7. Seal all connections using mastic, foil tape, or silicone based caulk
8. Install the filter (see FIGURE 7)
9. Install the door
10. Reconnect power to the furnace or air handler at the electrical
service panel
11. Make a cooling or heating call to test the system and make sure it
operates as desired Ensure there are no air leaks in the air cleaner
or return ductwork joints
FIGURE 7
EXPAND CLEAN FILTER
WARNING
FIGURE 5
FIGURE 6
INSTALL FILTER WITH
AIR FLOW POINTING
TOWARD FURNACE
OR AIR HANDLER
ALIGN FILTER IN TOP AND BOTTOM RAILS
AND SLIDE INTO PLACE REINSTALL DOOR
90‑2345
90‑1374
AIR FLOW
90‑2344
90‑2346
5
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