—20—
3.5 PROCEDURE C
Redirect the louvers at the back of the wall sleeve
to 60° angle as shown in the FIG 32. The use of
pliers is recommended.
If the wall sleeve already has a rear grille, skip to
step 4. If the wall sleeve does not have a rear grille
or louvered panel, install the plastic grille from the
kit. Cut the plastic grille to 26-1/2" wide and 15-1/2"
high. Place the plastic grille to the inside of the wall
sleeve at the rear flange.
Fasten the 4 washer screws to secure the grille to
the wall sleeve. If you need plastic nuts to mount
plastic grille to the inside of the wall sleeve, there
are plastic nuts in the installation kit. The nuts are
installed from the inside of the sleeve and are
pressed into the square holes of the rear flanges.
Remove the backing from the Horizontal Insulation
strip 1
3
/
8
x 1
3
/
8
x 27
3
/
16
and attach that to the inside
bottom of the sleeve as shown below. Remove the
backing from the Around Insulation strip 1
3
/
8
x 1
3
/
8
x
61
1
/
2
and attach that to the inside front of the
sleeve as shown below.
If the depth of your existing sleeve is less than or
equal to 18”, skip to step 7. Otherwise, cut the
baffles and the support blocks according to Length
"A" in the table below.
Remove the backing from the support blocks and
attach them to the inside of the wall sleeve as
shown FIG 37. Slide the baffle into slots of the
support blocks
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