Installation; Recommended Tools And Accessories For Installation; Install Ductwork (Ducted Installations Only) - Broan Alta ALT3 Series Installation Use And Care Manual

For ADA compliance installation guidelines, please type the model number into our website.
Recommended Tools and Accessories
for Installation
• Measuring tape
• Phillips screwdriver no. 2
• Nutdriver or socket 11/32"
• Flat blade screwdriver (to open knockout holes)
• Drill, 1/8" drill bit and 1½" hole saw (to mark holes for ducting and cut electrical access hole)
• 7/64" drill bit (to drill holes for EZ1 brackets mounting screws)
• Wood shims (2) and wood screws (4) (required for standard installation to framed cabinet)
• Saw (to cut holes for ducted application)
• Sheet metal shears (ducted installation only, for duct adjustment)
• Pliers (ducted installation only, for duct adjustment)
• Metal foil duct tape (for ducted applications)
• Scissors (to cut metal foil duct tape)
• Pencil
• Wire stripper
• Strain relief, 1/2" diameter (to secure house wiring cable to the hood)
• BP87Q Damper (needed if 7-in. round duct is used)

Install Ductwork (Ducted Installations Only)

NOTE: Distances over 30" are at the installer and user discretion.
1 ] Determine whether hood will discharge vertically (3¼" x 10" or 7" round),
or horizontally (3¼" x 10" only).
2 ] Decide where the ductwork will run between the hood and the outdoors.
3 ] Choose a straight, short duct run to allow the hood to perform most efficiently. Long duct
runs, elbows and transitions will reduce the performance of the hood. Use as few of them as
possible. When possible, use at least 2 foot straight runs before any turns. Larger ductwork
may be required for best performance with longer duct runs.
NOTE: To use 6" round ducting, install a 3¼" x 10" to 6" round transition (not included). The
4 ] Install wall cap or roof cap (sold separately); ensure there is no leak in house insulation.
8
Connect metal ductwork to cap and work back towards the hood location. Use 2" metal foil
duct tape to seal the joints between ductwork sections.
R
S
OFFIT
C
ABINET
18" - 30"
MIN
ABOVE COOKING SURFACE
performances may be affected.
OOF CAP
3¼" 10"
X
7"
ROUND DUCT
(F
OR VERTICAL
DISCHARGE
H
OUSE WIRING
(T
OP OR BACK OF HOOD
W
ALL CAP
H
OOD
3¼"
(F
MAX OR HORIZONTAL DISCHARGE
OR
)
)
10"
X DUCT
)