ASSEMBLY INSTRUCTIONS
Preparing the Fan
1. Unpack and remove fan carefully from the carton. Confirm that all pieces are present.
2. Choose the location for your fan so that:
a. The intake vent from the outside is placed a minimum of six feet from any other exhaust vent;
b. To ensure the best performance, it is recommended that the length of ducting and the number of
elbows be kept to a minimum, the radius of each elbow be as large as possible for the
installation, and that insulated hard ducting be used.
c. The door can be opened to allow cleaning the filters.
NOTE:
The fan must be installed in a location that can be easily accessed once installed.
3. No additional vibration deadening materials are needed for this fan.
Mounting the Fan:
1. Fix the inlet and outlet duct adapter on fan body (Fig.1), insert the tabs on the duct adapter into the
receptacles on the fan body and secure with 1 screw C (ST4*15). Plug in the damper motor into the
receptacle on the housing.
2. Fix the hangers (4 pcs) onto the fan body by 2 screws A(M5*12) each (Fig.2) Note housing is shown
upside down for clarity
3. Confirm the fan is appropriately positioned so the air flow is in the correct direction (the damper is on
the outlet of the fan) and the fan can be easily accessed for cleaning and maintenance.
4. The fan can be mounted directly to studs/joist/blocking using appropriate lag screws (not included) or
suspended from hangar rods (not included). Use thread locker on threads as appropriate.
DUCTING
NOTE: The ducting from this fan to the outside of the 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.
NOTE: To ensure the best performance, 6" or larger duct is recommended.
1. Do not locate the fresh air inlet where vehicles may be serviced or left idling.
2. The fresh air inlet should be at least ten feet away from any exhaust such as dryer vents, chimneys,
furnace, and water heater exhausts or other sources of contamination or carbon monoxide.
3. Never locate the fresh air inlet inside a structure
