IMPORTANT INSTRUCTIONS
OPERATING MANUAL
Models:
BFC90, BFC90H, BFC100, BFC100H Exhaust Fan

| READ AND SAVE THESE INSTRUCTIONS
READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE, INSTALL, OPERATE OR MAINTAIN
THE PRODUCT DESCRIBED. PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY
INFORMATION. FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL
INJURY AND/OR PROPERTY DAMAGE!|
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RETAIN INSTRUCTIONS FOR FUTURE REFERENCE.

GENERAL SAFETY INFORMATION

| When using electrical appliances, basic precautions should
always be followed to reduce the risk of fire, electric shock and
injury to person, including the following:|
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WARNING: TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, AND INJURY TO A PERSON, OBSERVE THE FOLLOWING:

a) Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer.
b) Before servicing or cleaning the unit, switch power off at the service panel and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel.

WARNING: TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, AND INJURY TO A PERSON, OBSERVE THE FOLLOWING:

a) Installation work and electrical wiring must be done by a qualified person(s) in accordance with all applicable codes and standards, including fire-related construction.
b) Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel-burning equipment to prevent back drafting. Follow the heating equipment manufacturer’s guidelines and safety standards such as those published by the National Fire Protection Association (NFPA) and the American Society for Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE), and the local code authorities.
c) When cutting or drilling into a wall or ceiling, do not damage electrical wiring and other hidden utilities.

CAUTION: FOR GENERAL VENTILATING USE ONLY. DO NOT USE IT TO EXHAUST HAZARDOUS OR EXPLOSIVE MATERIALS AND VAPORS.

d) Ducted fans must always be vented to the outdoors.
e) This unit must be grounded.
f) To avoid motor bearing damage and noisy and/or unbalanced impellers, keep drywall spray, construction dust, etc. off the power unit.
g) Read all instructions before installing or using an exhaust fan.

WARNING: TO REDUCE THE RISK OF FIRE, AND ELECTRIC SHOCK, DO NOT USE THIS FAN WITH ANY SOLID-STATE SPEED CONTROL DEVICE.

a) If this unit is to be installed over a tub or shower, it must be marked as appropriate for the application and be connected to a GFCI (Ground Fault Circuit Interrupter) – protected branch circuit.

WARNING: DO NOT USE IN KITCHENS.
WARNING: THE DUCTING FROM THIS FAN TO THE OUTSIDE OF THE BUILDING HAS A STRONG EFFECT ON THE AIRFLOW, 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 AIRFLOW.

INSTALLATION INSTRUCTIONS

CAUTION: MAKE SURE POWER IS SWITCHED OFF AT THE SERVICE PANEL BEFORE STARTING INSTALLATION.

SECTION 1
Preparing the Exhaust Fan

1. Unpack the fan from the carton and confirm that all pieces are present. In addition to the
   exhaust fan you should have:
   1 – Grill
   4 – Mounting Rails
   1 – Instruction/Safety Sheet

2. Choose the location for your fan. To ensure the best air and sound 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. This fan will require at least 8″ of clearance in the ceiling or wall and will mount through drywall up to 3/4″ thick. The fan mounts between 16” or 24” on center joists using the 4 provided mounting rails. 3. No additional vibration deadening materials are needed for this fan.

SECTION 2
New Construction

1. Install the rails into the mounting channel on the housing. Center the mounting channel in the slots on the housing, then from inside the housing tighten the mounting channel screws so the channel is securely in place. Position the housing next to the joist. Line up housing so that it will be flush with the finished ceiling. Secure the ends of the rails with screws or nails (not included) to the joists and slide the housing into the final position (Figure 1).

SECTION 3
Existing Construction

1. Set housing in position between the joist and trace an outline onto the ceiling material (Figure 2). Set housing aside and cut opening, being careful not to cut or damage any
   electrical or other hidden utilities. Install the rails into the mounting channel on the housing. Center the mounting channel in the slots on the housing, then from inside the
   housing tighten the mounting channel screws so the channel is securely in place. Position the housing in the previously cut hole so that it is flush with the finished ceiling. Secure the ends of the rails to the joists (Figure 1).

SECTION 4
Ducting
NOTE: 4″ OR LARGER RIGID DUCT IS RECOMMENDED FOR BEST PERFORMANCE.
CAUTION: ALL DUCTING MUST COMPLY WITH LOCAL AND NATIONAL BUILDING CODES.

NOTE: The ducting from this fan to the outside of the building has a strong effect on the airflow, 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 airflow.

1. Connect the ducting to the fan’s duct collar (Figure 3). Secure in place using tape or screw clamp. Always duct the fan to the outside through a wall or roof cap. It is recommended that low restriction termination fittings be used.
   

2. 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 the duct and/or fan in order to minimize possible condensation buildup within the duct, as well as building heat loss or gain (Figure 4).

SECTION 5
Wiring
CAUTION: MAKE SURE POWER IS SWITCHED OFF AT THE SERVICE PANEL BEFORE STARTING INSTALLATION.
CAUTION: ALL ELECTRICAL CONNECTIONS MUST BE MADE IN ACCORDANCE WITH LOCAL CODES, ORDINANCES, OR NATIONAL ELECTRICAL CODES. IF YOU ARE UNFAMILIAR WITH METHODS OF INSTALLING ELECTRICAL WIRING, SECURE THE SERVICES OF A QUALIFIED ELECTRICIAN.

1. Remove the wire compartment cover screw and place the cover in a secure place (Figure 5).
   Standard Models

2.  Run wiring from an approved wall switch carrying the appropriate rating. One neutral (white), one ground (green or bare copper), and one hot (black lead connected to the switch). Secure the electrical wires to the housing with an approved electrical connector. Make sure you leave enough wiring in the box to make the connection to the fan’s receptacle.

3. Connect the White wire from the house to the White wire from the fan’s receptacle. Connect the Black wire from the wall switch to the Black wire from the fan’s receptacle.
   Connect the ground wire from the house to the Green wire from the fan’s receptacle (Figure 6). Use approved methods for all connections.
   Humidity Sensing Models
   3a. For proper operation the humidity sensing fan will require a 3-way switch (not included). Run wiring between the fan and the switch location. Make sure you leave enough wiring in each box to make the connections. At the switch, the box connects the Black wire from the house to the common terminal of the switch. Connect the black wire from the fan to one of the switched terminals on the switch. This position will energize the automatic mode and the fan will energize upon a rise in humidity. Connect the Yellow wire from the fan to the other switched terminal on the switch. This position will activate the Manual On feature and energize the fan. Properly connect the ground and neutral (if applicable) mount the switch and the cover.
   3b. Connect the white wire from the house to the white wire from the fan. Connect the ground wire from the house to the green wire from the fan housing (Figure 7). Use approved methods for all connections.
   

4. Carefully tuck the wire back inside the wire compartment and replace the wire compartment cover securing with the screw that was removed earlier.

SECTION 6
Completing the Installation

1.  Using a sealant appropriate for contact with the building materials present and for the temperature requirements of the installation to prevent air leakage from unconditioned
   spaces is recommended. If gaps between unit housing and ceiling are great, additional material (backing rod, ceiling material) may be required.
   NOTE: This fan is rated for direct insulation contact (Type IC) and it is recommended that this fan be completely covered by insulation in order to reduce heat loss or gain to unconditioned space.

2. Plug the fan’s quick-connect motor cord into the receptacle. This cord will only fit one way into the receptacle (Figure 8).
   

3. Install the grill by squeezing the two ends of the springs together and installing them up into the slots on the fan’s housing. Push the grill up into position (Figure 9).
   

4. Restore power and test your installation.

SECTION 7
Setting the Humidistat
This fan may be equipped with a humidity sensor that automatically turns the fan on when humidity is an above-set point and off when humidity is at or below set point. If the fan is operating too long or not enough, first check to see the humidity sensor set point. In cases where the ambient humidity level of the room rises higher than the preset level, the fan will turn on even if the room is not occupied. This helps prevent conditions that lead to mold growth.

CAUTION: MAKE SURE POWER IS SWITCHED OFF AT THE SERVICE PANEL BEFORE SERVICING THE UNIT.

1. To set the desired humidity level of the room, remove the grill and locate the dehumidistat dial located on the wire compartment cover.
2.  Set the dial to the relative humidity you want the fan to maintain usually between 50 & 80%. Moist climates will require higher settings than dry climates. When the humidity level of the room is below this setting the fan will remain off. When the humidity level rises about this setting the fan will turn on and run until the humidity level falls below this setting.
3. Reinstall the grill and restore power.

SECTION 8
Use and Care
CAUTION: MAKE SURE POWER IS SWITCHED OFF AT THE SERVICE PANEL BEFORE SERVICING THE UNIT.

1. Cleaning the Grill: Remove the grill and use a mild detergent, such as dishwashing liquid, and dry with a soft cloth. NEVER USE ANY ABRASIVE PADS OR  SCOURING POWDERS. Completely dry grill before reinstalling. Refer to instructions in Section 6 Complete the Installation, to reinstall grill.
2. Cleaning the Fan Assembly: Wipe all parts with a dry cloth or gently vacuum the fan. NEVER IMMERSE ELECTRICAL PARTS IN WATER.

Troubleshooting Guide

circuit tripped.
1 b. The connector plug from the motor is not plugged in.
1 c. The wiring is not connected properly.
1 d Motor has stopped operating.| 1 a. Replace fuse or reset circuit breaker.
1 b. Turn off power to the unit. Remove Grill and plug the motor into a receptacle in housing. Restore power to the unit.
1 c. Turn off power to the unit. Check that all wires are connected.
1 d. Replace motor.
2. Fan is operating, but air moves slower than normal.|  2. Obstruction in the exhaust ducting.| 2. Check for any obstructions in the ducting. The most common are bird nests in the roof cap or wall cap where the fan exhausts to the outside.
 3. Fan is operating louder than normal| 3a. Motor is loose
3b. Fan blade is hitting the housing of the unit. .| 3a. Turn off power to unit. Remove grill and check that all screws are fully tightened. Restore power to the unit
3b. Call your dealer for service.

LIMITED WARRANTY

WHAT THIS WARRANTY COVERS: This product is warranted against defects in workmanship and/or materials.
HOW LONG THIS WARRANTY LASTS: This warranty extends only to the original purchaser of the product and lasts for five (5) years from the date of original purchase
or until the original purchaser of the product sells or transfers the product, whichever first occurs.
WHAT AIR KING WILL DO: During the warranty period, Air King will, at its sole option, repair or replace any part or parts that prove to be defective or replace the whole
product with the same or comparable model.
WHAT THIS WARRANTY DOES NOT COVER: This warranty does not apply if the product was damaged or failed because of the accident, improper handling or operation,
shipping damage, abuse, misuse, unauthorized repairs made or attempted. This warranty does not cover shipping costs for the return of products to Air King for repair or
replacement. Air King will pay return shipping charges from Air King following warranty repairs or replacement
ANY AND ALL WARRANTIES, EXPRESSED OR IMPLIED (INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTY OF MERCHANTABILITY), LAST ONE YEAR
FROM THE DATE OF ORIGINAL PURCHASE OR UNTIL THE ORIGINAL PURCHASER OF THE PRODUCT SELLS OR TRANSFERS THE PRODUCT, WHICHEVER FIRST
OCCURS AND IN NO EVENT SHALL AIR KING’S LIABILITY UNDER ANY EXPRESS OR IMPLIED WARRANTY INCLUDE (I) INCIDENTAL OR CONSEQUENTIAL DAMAGES
FROM ANY CAUSE WHATSOEVER, OR (II) REPLACEMENT OR REPAIR OF ANY HOUSE FUSES, CIRCUIT BREAKERS OR RECEPTACLES. NOTWITHSTANDING ANYTHING TO
ON THE CONTRARY, IN NO EVENT, SHALL AIR KING’S LIABILITY UNDER ANY EXPRESS OR IMPLIED WARRANTY EXCEED THE PURCHASE PRICE OF THE PRODUCT
AND ANY SUCH LIABILITY SHALL TERMINATE UPON THE EXPIRATION OF THE WARRANTY PERIOD.
Some states and provinces do not allow limitations on how long an implied warranty lasts, or the exclusion or limitation of incidental or consequential damages, so these exclusions or limitations may not apply to you. This warranty gives you specific legal rights. You may also have other rights which vary from state to state and province to province. Proof of purchase is required before a warranty claim will be accepted.

CUSTOMER SERVICE:
Toll-Free 800-465-7300
Our Customer Service team is available to assist you with product questions, service center locations, and replacement parts. They can be reached Monday through Friday, 8 am-4pm Eastern. Please have your model number available, as well as the type and style (located on the label inside of your product). Please do not return the product to the place of purchase. www.airkinglimited.com
PARTS FOR DISCONTINUED, OBSOLETE AND CERTAIN OTHER PRODUCTS MAY NOT BE AVAILABLE. DUE TO SAFETY REASONS, MANY ELECTRONIC COMPONENTS AND MOST HEATER COMPONENTS ARE NOT AVAILABLE TO CONSUMERS FOR INSTALLATION OR REPLACEMENT.

| Qty.| Description| Replacement Part #

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1| 4| Mounting Rails| 552251001
2| 1| Wire Compartment (BFC90/BFC100)| 552251003
1| Wire Compartment w/Humidistat (BEC9OH/BEC100H)| 552251008
3| 1| Blower Assembly BEC90/BFC9OH| 552251004
1| Blower Assembly BFC100/BFC100H| 552251012
4| 2| Grill Springs| 552251005
5| 1| Grill| 552251006
6| 1| Knob| 551299802
7| 1| Wire Cover| 5S2251002
8| 1| Plastic Damper Plate| 552251009

Installer:……………………………….
Installation Date:………………….
Place of Purchase:…………………….
Model Number:………………….
6727922 Rev. G 1/21
www.airkinglimited.com

References

• Air King Homepage - TOTAL HOME VENTILATION, Exhaust Fans

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