20
NOTE: Your downdraft vent requires you to purchase an
in-line (external type) blower motor system. See “Blower
Motor System” in the “Accessories” section.
Prepare for Mounting the In-Line Blower System
The in-line blower system must be fastened to a secure
structure of the roof, ceiling, wall, floor, or new or existing frame
construction. The 4 holes on either the inlet (bottom) side or the
outlet (top) side of the blower must be used to mount the in-line
blower system to the structure.
NOTE: The mounting hole locations must span the studs.
Additional stud framing may be required. Plywood may be
used to span open areas between ceiling or floor joists or roof
rafters to aid installation. This structure must be strong enough
to support the weight of the in-line blower system (50 lb
[22.6 kg] min).
Prepare the In-line Blower System
1. Using 2 or more people, move the in-line blower motor
system to the mounting location.
2. Remove the 10 screws from the front cover of the in-line
blower motor housing and set them aside.
3. Remove the front cover of the in-line blower motor housing
and set it aside.
NOTE: To make the blower motor housing easier to mount,
the blower motor assembly can be removed. If you do not
want to remove the blower motor assembly, proceed to
“Install In-line Blower System” in this section.
4. Disconnect the motor electrical plug from the blower motor
assembly.
5. Remove the screws that secure the blower motor assembly
to the in-line blower housing and set them aside.
6. Pull the spring clip to release the blower motor assembly.
Remove the blower motor assembly from the housing and
place it on a covered surface.
WARNING
Excessive Weight Hazard
Use two or more people to move and install
downdraft vent.
Failure to do so can result in back or other injury.
A
B C
D
A. Front cover
B. Blower mounting screws
C. Spring clip
D. Motor electrical plug
Install In-line Blower System
NOTE: The blower motor housing can be mounted using 4 holes
from either the inlet side or the outlet side of the blower.
Outlet Side
Inlet Side
1. Position the in-line blower motor housing in its mounting
location and mark the 4 mounting hole locations.
2. Drill 4 mounting pilot holes using a
3
/
16
" (4.8 mm) drill bit.
3. Attach the in-line blower motor housing to the mounting
location with four 6 x 80 mm mounting screws and washers.
4. If it is removed, reinstall the blower motor assembly and
secure it with the screws previously removed.
5. If it is removed, reattach the motor electrical plug to the
connector on the blower motor assembly.
Complete Preparation
1. Determine and make all necessary cuts for the vent system.
IMPORTANT: When cutting or drilling into the floor, ceiling or
wall, do not damage electrical wiring or other hidden utilities.
2. Determine the location where the
1
/
2
" (1.3 cm) wiring conduit
will be routed through the floor, ceiling or wall between the
inline blower and the downdraft vent.
3. Drill a 1
1
/
4
" (3.2 cm) hole at this location.
A
A
A
A
A. Mounting holes
A
A
A. Mounting holes
Install Downdraft Vent In-Line (External Type) Blower Motor
