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TYPICAL INSTALLATION
MOUNTING (New Frame Construction)
10" ROUND DUCT
4½" X 18½"
TO 10" ROUND
TRANSITION
Blower factory-shipped
in horizontal
discharge position.
GRILLE
Install after ceiling is
finished.
Factory-shipped unit installed in new construction.
MOUNTING (Existing Frame Construction)
2 X 4 FRAMING
(wide side down)
4½" X 18½"
TO 10" ROUND
TRANSITION
10" ROUND
DUCT
MOUNTING
BRACKETS
(Attached to
opposite sides
of housing &
upside-down,
so housing is
flush with
finished ceiling)
Factory-shipped unit installed in existing construction.
Mounting brackets
factory-shipped in
position for ½"
ceiling material.
MOUNTING
SCREW
CEILING
JOIST
(24" centers
shown)
GRILLE SCREW
CEILING JOIST
(24" centers
shown)
MOUNTING
SCREW
FINSHED
CEILING
MATERIAL
GRILLE
SCREW
GRILLE
VCDD040C • VCDD050C • VCDD070C
®
TYPICAL INSTALLATION
WIRING
BLACK
TO
BLACK
WHITE
TO
WHITE
Ventilator can be wired from outside of housing.
Use UL approved connectors to wire per local codes.
DUCTING (Horizontal blower discharge)
4½" X 18½"
TO 10" ROUND
TRANSITION
10"
ROUND
ELBOW
Two ways to connect ductwork to a factory-shipped unit.
NOTE: Make sure the shipping tape is removed from the damper
flap and that damper flap opens and closes freely inside the
ductwork. Use duct tape to make ductwork connections secure and
air-tight.
MODELS
TOP / BACK
OF HOUSING
GROUND TO
WIRING PLATE
WIRING
PLATE
120 VAC LINE IN
ROOF CAP
10"
ROUND
DUCT
Page 2
WALL
CAP
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