ASSEMBLY INSTRUCTIONS
Preparing the Fan
1. Unpack and remove fan carefully from the carton. Confirm that all pieces are present.
Part name
Fan
Appearance
Quantity
1
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.
Inlet duct
Screw C
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.
!
Caution INSTALL FRESH AIR INLET AWAY FROM SOURCES OF CONTAMINANTS
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.
4. Connect the ducting to the fan's duct collar. Seal ducting with appropriately rated tape. Use suitable clamps to secure
ducting in place. Make sure the fresh air intake is connected to a properly installed intake port that is a suitable weather
hood with insect screen to protect air intake. It is recommended that low restriction termination fittings be used.
5. Ensure duct joints and exterior penetrations are sealed with caulk or other similar material to create an air-tight path to
minimize building heat loss or gain and to reduce the potential for condensation. Place/wrap insulation around duct
and/or fan in order to minimize possible condensation buildup within the duct, as well as building heat loss or gain.
NOTE: At the base of the inlet duct adapter, there is a small diameter test port hole covered with a rubber cap. Make sure
the test port is not covered up with the ducting so that it can be accessed for pitot tube testing. To access the port,
remove the port cover and insert a pitot tube.
Screw A
Hanger
(M5*12)
4
8
Outlet duct
Screw C
Screw C
Screw B
(ST4*15)
(ST4*31)
4
2
Fig.1
2
Inlet duct
Outlet duct
1
1
Hangers
Attach with 2 screws A)
4 places
Fig.2
Installation
instructions
1