Cascade Series Install Manual

page 8 of 16

7. Using a drywall saw or other appropriate device, carefully cut out the rough opening into the ceiling. Use

care to avoid damaging the surrounding areas of the ceiling that will not be covered by the edges of the

eggcrate inlet grille.

8. Place the fan assemblies,  exible ducts, and damper assembly in the attic space. If necessary, the fan and

damper assemblies may be passed through the rough opening into the attic. It may be necessary to

detach the  exible duct from the fan assembly to allow passage of the fan and duct into the attic space. It is

recommended to pre-attach the  ex ductwork to fan assembly prior to placing unit in attic.

9. Move the damper assembly into place in the rough opening, with the bottom edge of the assembly

protruding into the opening. If more than two  anges were removed from the damper assembly for

installation clearance, make sure that the bottom edge of the damper assembly does not protrude below

the surface of the ceiling.

10. Attach the damper assembly to the framing by installing drywall screws (as supplied) or wood screws

through the inside wall(s) of the damper assembly into the framing. If addition framing is to be added,

place the framing over the damper assembly  anges and fasten in place.

If using fasteners long enough to penetrate through the framing, use extreme caution

to avoid drilling

into hidden wiring, plumbing, or other building elements of concern!

11. From below, install drywall screws through the ceiling and through the  anges of the damper assembly,

and into any addition framing positioned above the  anges. Use care to avoid installing screws outside

of the area that will be covered by the eggcrate inlet grille!

12. Hold the eggcrate grille in position on the ceiling, and install the included white screws through the holes

in the  ange of the grille, through the ceiling, and into the damper assembly  anges and/or framing

above.

Make sure that the eggcrate grille mounting screws penetrate into either the damper box  anges or

framing above, and that the grille is securely fastened in place!

FIGURE 2 - DAMPER BOX INSTALLATION

4. Make sure that the exact location chosen for

the rough opening will allow installation of the

eggcrate inlet grille, and will not interfere with

any lighting  xtures, smoke alarms, or other

objects installed in the ceiling.

5. Remove any insulation from the area of

the exact chosen location, and make sure that

no wiring, plumbing, bracing or other building

elements will interfere with the damper

assembly installation.

6. With the template laying on top of the

ceiling in the exact chosen location, mark the

outline of the template onto the ceiling. If the

ceiling hole is to be cut from below, drill or

punch a small hole at each corner of the

template, and mark the outline of the template

from below the ceiling.

P/N 780105002 01/21 Rev A