Page 3
MODELS QTREN070C • QTREN080C
2. Attach
damper/duct
connector.
Snap
damper/duct
connector onto
housing. Make
sure connector
is
fl
ush with top
of housing and
damper
fl
ap falls
closed.
3. Install
4-inch round
ductwork.
Connect
4-inch
round ductwork
to damper/duct
connector. Run
ductwork to a
roof cap or wall
cap. Tape all
ductwork
connections
to make them
secure and air tight.
BJ0009
INSTALL HOUSING & DUCT
1a. Mount
housing to
joist or
I
-joist.
Use a pliers to bend
housing
TABS
out
to 90°. Hold housing
in place so that
the housing tabs
contact the bottom
of the joist. The
housing mounts
with four screws
or nails. Screw or
nail housing to joist
through lowest holes
in each mounting
fl
ange, then through
highest holes.
NOTE: Mounting to
I
-JOIST
(shown)
requires use
of
SPACERS
(included) between
the highest hole
of each mounting
fl
ange and the
I
-joist.
SPACER
(use for mounting to
I
-Joist)
I
-JOIST
TABS
1b. Mount housing anywhere between trusses,
joists, or
I
-joists using hanger bars.
Sliding hanger bars are provided to allow for accurate
positioning of housing anywhere between framing. They can
be used on all types of framing (
I
-joist, standard joist, and
truss construction) and span up to 24”.
Attach the MOUNTING CHANNELS to the housing using the
SCREWS supplied. Make sure TABS face “up” as shown. Use
the set of channel mounting holes (marked “STD”) to mount the
housing
fl
ush with the bottom of the drywall. Use the other set
of holes (not marked) to mount the housing
fl
ush with the top of
the drywall.
OR
HANGER
BAR (4)
SCREWS (4)
TAB
STD
MOUNTING
CHANNEL (2)
BD0012A
Extend HANGER BARS to the width of the framing.
Hold ventilator in place with the hanger bar tabs wrapping
around the BOTTOM EDGE OF THE FRAMING.
NAIL ventilator to framing or fasten with screws (not provided)
through HOLES near nails.
*To ensure a noise-free mount: Secure hanger bars together
with SCREWS or use a pliers to crimp mounting channels
tightly around hanger bars.
HOLE FOR OPTIONAL
SCREW MOUNTING (4)
NAIL (4)
BOTTOM EDGE
OF FRAMING
*
SCREW (2)
BR0009A
