Quick Start Manual

Page 3
MODELS HD50NT • HD80NT
INSTALL THE HOUSING
(continued)
ATTACH THE GRILLE
INSTALL THE DUCTWORK
FLUSH
CONNECT THE WIRING
1. Snap the damper/duct connector onto housing. Make sure
that tabs on the connector lock into slots in housing. Top of
damper/duct connector should be flush with top of housing.
2. Connect 4” round duct to damper/duct connector and
extend duct to outside through a roof or wall cap. Check
damper to make sure that it opens freely. Tape all duct
connections to make them secure and air tight.
4. Place housing in opening so that its bottom edge is flush
with finished ceiling. Nail to joist through keyhole on both
sides. To ensure a noise-free installation, drive another nail
through the top hole of each mounting bracket.
Existing Construction
5. Additional mounting holes are provided for installations
where access from above is inconvenient or not possible.
Nail or screw housing directly to joists or framing.
ADDITIONAL
MOUNTING
HOLES
1. Squeeze grille springs together and insert springs into
slots in motor plate.
2. Push grille up against ceiling.
BLK
BLK
WHT
WHT
GRD
UNIT
SWITCH BOX
ON / OFF
SWITCH
LINE
IN
BLK
WHT
GRD
M
SCHEMATIC WIRING DIAGRAM
SWITCH BOX
ON / OFF SWITCH
(purchase separately)
WHITE
BLACK
GROUND
(bare)
WIRING
PLATE
120 VAC
LINE IN
RECEPTACLE
1. Wire unit following diagram above. Run electrical cable as
direct as possible to unit. Do not allow cable to touch sides
or top of unit after installation is complete.