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Lennox C1DAMP20C-1 Installation Instructions Manual page 5

Outdoor air dampers and outdoor air hood used with 156-300s units

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Outdoor Air Hood
Align dimples to position hood parts and secure in place
with #10 self-drilling screws.
1- Use the locating dimples to install the right hood side
onto the unit. Install the left side in the same manner.
See figure 10.
Note - Incorrectly positioning the hood sides can result in
leaks or a hood that will not assemble properly.
2- Install the bottom filter bracket between the left and
right hood sides. Secure in place with #10 screws.
See figure 10 and 11.
3- Attach hood top onto the left and right hood sides.
Secure with #10 screws.
IMPORTANT - Do not tighten screws completely.
4- Align holes in the top flange of the hood top with the
locating dimples provided on the unit. Secure with
#10 self-drilling screws. See figure 10.
5- Secure the hood top to the left and right hood sides.
Tighten the previously-installed screws.
HOOD SIDE VIEW
8
CAULK HOOD TOP
TO UNIT TO SEAL
WATERTIGHT
HOOD TOP
FILTER
HOOD
TOP
FILTER
FRONT FILTER
BRACKET
FIGURE 11
UNIT
3
ALIGN VERTICAL
HOLES ON BRACKET
WITH VERTICAL HOLES
ON SIDE OF HOOD
BOTTOM FILTER
BRACKET
FILTER
7- Install front filter bracket on the left side of the hood.
Secure with three screws. See figure 11 and 12.
8- Insert filter into the bottom filter bracket. Slide filter to the
left into the shorter front filter bracket. See figure 12.
9- Insert the second filter into the bottom filter bracket.
Install the longer front filter bracket to support the
front of filter. Secure using three screws. See figure
9 and 13.
INSTALL FIRST FILTER
BOTTOM FILTER
BRACKET
INSTALL SECOND FILTER
BOTTOM
FILTER
BRACKET
FRONT FILTER
BRACKET (LONG)
Page 5
FILTER
FRONT FILTER
BRACKET
(SHORT)
FIGURE 12
FILTER
FIGURE 13

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C1damp10c-1