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15. After installing the middle filter mount rails into the existing air
cleaner enclosure with the provided blunt tip screws, it is
necessary to cover the exposed screw tips on the outside of
the cabinet.
Locate the six 1-1/4" foam disc pads from the hardware
packet and apply them over the screw tips on the outside of
the cabinet. This will protect the homeowner from any contact
with these screw tips.
16. Remove Model number / Serial number label from the kit and
place on the bracket as shown in Figures 18 and 19.
Note: Pictured enclosure is not installed on a furnace.
17. Measure and cut the provided gasket to length. Place gasket
material into the two channels located at each side of the
opening as shown in Figure 20.
Pub. No. 18-HE56D1-3
Field Upgrade Guide
Figure 17
Figure 18
Figure 19
Figure 20
BEFORE INSTALLATION
AFTER INSTALLATION
Third screw and foam
sticker - Optional
Place circular foam
disc pads over screw tips
protruding from case.
Repeat on other side
7
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