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INSTALLATION
1. Disconnect power to the furnace or air handler at
the electrical service panel.
WARNING
120 Volts may cause serious injury from electrical
shock. Disconnect power to the furnace/air
handler before starting installation. Leave power
disconnected until installation 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, remove the filter and
thoroughly clean the blower compartment.
4. 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).
5. Mount the return ductwork to the outer housing.
6. Seal all connections using mastic, foil tape or
silicone based caulk.
7. Install the filter (see FIGURE 7).
8. Install the door.
9. Reconnect power to the furnace or air handler at
the electrical service panel.
FIGURE 5
FIGURE 6
FIGURE 7
90-2345
EXPAND
CLEAN FILTER.
INSTALL FILTER WITH AIR FLOW POINTING
TOWARD FURNACE OR AIR HANDLER.
ALIGN FILTER IN TOP AND BOTTOM RAILS
AND SLIDE INTO PLACE. REINSTALL DOOR.
90-1374
90-2344
90-2346
English 3
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