ASSEMBLY INSTRUCTIONS
2. Mount with mountion holes and hanger bar
5. INSTALL ROUND DUCTWORK
a. Slide one hanger bar into the channel on the housing and adjust as needed to fit between framing.
b. Hold housing in place so that the housing contact the bottom of the joist, Screw housing to joist
through the hole of the housing .
c. Screw the hanger bar onto the other side of joist through the hole.
d. Screw hanger bar to housing with screw.
e. Refer to the right diagram.
a. Connect the round ductwork (not included) to the damper/duct connector, and run the ductwork
to a roof or wall cap (not included).
b. Using tape (not included), secure all the ductwork connections so that they are air tight.
c. Insulated flexible duct is recommended for the quietest possible installation. If rigid duct is used,
a short (1-3 feet) section of insulated flexible duct will ensure quiet operation.
The ducting from this fan to the outside of building has a strong effect on the air flow, noise and
energy use of the fan. Use the shortest, straightest duct routing possible for best performance, and
avoid installing the fan with smaller ducts than recommended. Insulation around the ducts can
reduce energy loss and inhibit mold growth. Fans installed with existing ducts may not achieve
their rated air flow.
3. Mount to I-joist
4. Install DUCT AND BLOWER ASSEMBLY
Hole
Hole
Hole
a. Slide one hanger bar into channel on the housing and adjust as needed.
b. Hold housing in place so that the housing contacts the bottom of the joist.
c. Screw housing to joist through the hole of the housing.
d. Screw the hanger bar onto the joist through the hole.
e. Screw hanger bar to housing with screw .
a.Install duct from the inside of the housing;Fix the duct by the tab.
b.Fix the BLOWER ASSEMBLY to the housing by 3 screws.
RETROFIT INSTALLATION
1. Remove wire panel and blower assembly before installation.
2. Fold mounting ears flat against housing.
Blower
assembly
Wire
panel
3. Enlarge ceiling opening to 9-1/2” by 9-1/2”, leave ductwork and wiring in place.
4. Connect wiring according to the wiring diagram.Re-install wire panel.
5. Mounting fan
a. Mount with additional mounting holes
The interior of the fan housing contains additional mounting holes in case
exterior mounting is not possible.
Screw or nail the fan housing directly to the framing or joists.
Remove the blower assembly as directed in the service parts section of this
manual to gain access to the additional mounting holes.
b. Mount with hole of the flange
Use screws (included) to screw fans to the ceiling through the holes of the
housing.
6. Connect duct
Pull existing ducting through housing discharge opening and tape ducting to
duct connector. Push connector/ducting back through opening,fix the duct by
the tab.
7. Install the blower assembly.
additional mounting holes
Hole
Hole
Hole
Tab
9-1/2”
9-1/2”
3