Air King QuFresh QFAM Series User manual

IMPORTANT INSTRUCTIONS -
OPERATING MANUAL
SAVE THESE INSTRUCTIONS
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6728076 Rev. M 4-19 1 of 12
Inline Fan
QFAM
TM
by
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!
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:
WARNING:TO REDUCE THE RISK
OF FIRE, ELECTRIC SHOCK AND INJURY TO
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 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
PERSON, OBSERVE THE FOLLOWING:
a) Installation work and electrical wiring must be done by 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 guideline
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 wall or ceiling, do not damage electrical
wiring and other hidden utilities.
CAUTION:FOR GENERAL VENTILATING USE ONLY.
DO NOT USE TO EXHAUST HAZARDOUS OR EXPLOSIVE
MATERIALS AND VAPORS.
d) This unit must be grounded.
e) To avoid motor bearing damage and noisy and/or unbalanced impellers,
keep drywall spray, construction dust, etc. off power unit.
f) Read all instructions before installing or using exhaust fan.
g) For residential installations only.
h) Must use suitable weather hood with insect screen to protect air intake.
WARNING:TO REDUCE THE RISK OF FIRE,
ELECTRIC SHOCK, DO NOT USE THIS FAN WITH
ANY SOLID-STATE SPEED CONTROL DEVICE.
WARNING:DO NOT USE IN KITCHENS.
WARNING: 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 AIRFLOW.

INSTALLATION INSTRUCTIONS
CAUTION: MAKE SURE POWER IS SWITCHED OFF AT
SERVICE PANEL BEFORE STARTING INSTALLATION.
SECTION 1
Preparing the Fan
1. Unpack fan from the carton and confirm that all pieces are present. In addition to the
fan you should have:
2 - Collar Assembly (attached)
2 - Mounting Brackets (attached)
1 - Controller (attached)
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 12" of clearance in the
ceiling or wall. The fan mounts using the provided mounting brackets or can be surface
mounted to a wall or ceiling.
NOTE: The fan must be installed into a location that can be easily accessed once installed.
3. No additional vibration deadening materials are needed for this fan.
SECTION 2
Mounting the Fan
1. Confirm the fan is positioned so the air flow is in the correct direction.
2a. Surface Mounting: Locate at least one stud or joist. Place the fan in position so that the
mounting bracket is centered on the stud or joist and make the location for the four (4)
holes. Remove the fan and install properly rated wall/ceiling anchors for the holes that
do not go directly into a joist or stud. Position fan in place and secure with screws (not
included) (Figure 1).
2b. Mounting to a Joist: Install two - 2 x 4 headers (not included) between the joists.
Position the fan housing on top of the headers and secure the mounting brackets with
screws (not included) to the header (Figure 2).
2c. Hanging Bar Mounting: Lift unit up onto the threaded rods and secure in place using
appropriate hardware (not included) (Figure 3).
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6728076 Rev. M 4-19 2 of 12
SECTION 3
Ducting
NOTE: 6" 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 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.
WARNING: MAKE SURE THE FRESH AIR INTAKE PORT COMPLIES
WITH ALL LOCAL AND NATIONAL CODES AND IS LOCATED AT LEAST 6 FEET
AWAY FROM SOURCES OF CONTAMINATION SUCH AS BUT NOT LIMITED TO: DRYER,
FURNACE OR CENTRAL VACUUM EXHAUSTS, GAS APPLIANCES SUCH AS BBQ GRILLS,
GARBAGE BINS OR OTHER EXHAUST PORTS.
NOTE: To ensure quiet operation of in-line and remote fans, each fan shall be installed using
sound attenuation techniques appropriate for the installation. For bathroom and general
ventilation applications, at least 8 feet of insulated flexible duct shall be installed between the
exhaust or supply grille(s) and the fan.
1. Connect the ducting to the fan’s duct collar (Figure 4). Seal ducting to housing with
appropriately rated tape. Use screws or suitable clamps to secure 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.
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 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 duct adapter, there is a small diameter test port hole covered with
a plastic 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 tube.
SECTION 4
Wiring
CAUTION: MAKE SURE POWER IS SWITCHED OFF AT
SERVICE PANEL BEFORE STARTING INSTALLATION.
CAUTION: ALL ELECTRICAL CONNECTIONS MUST BE
MADE IN ACCORDANCE WITH LOCAL CODES, ORDINANCES, OR
NATIONAL ELECTRICAL CODE. IF YOU ARE UNFAMILIAR WITH METHODS OF INSTALLING
ELECTRICAL WIRING, SECURE THE SERVICES OF A QUALIFIED ELECTRICIAN.
NOTE: This unit includes a side access panel for wiring that does not require the removal of the
fan’s blower assembly.
1. Remove the wire compartment cover screw and place cover in a secure place (Figure 5).
Bracket
Figure 3
Housing
Threaded Rod
Figure 1
Screws
Stud/Joist Anchor
Air Flow
Figure 5
Screw
Wire
Compartment
Cover
Ground
Screw
Joist
2 x 4 Header
Figure 2
Bracket
12"
Figure 4
Air Flow
Intake
Ducting
Outlet
Ducting
Test Port

2. Pull the loose black, white and green wires out from the wire compartment (additional
wires will be present). Install an approved electrical connector to the wire compartment
cover (not included). Run a black (hot), white (neutral), and a green or bare ground wire
from the supply through the electrical connector. Connect all wires from the supply
to their corresponding wires within the wire compartment (Figure 6). Use approved
methods for all connections.
3. Carefully tuck wires back inside wire compartment and replace wire compartment cover
securing with the screw that was removed earlier.
SECTION 5
Setting the Speed
1. Determine the CFM required. The unit
can be set from 40 CFM to 120 CFM
in increments of 10 CFM. Remove the
screw securing the access panel cover in
place and open the cover to gain access.
Locate the speed control panel inside the
unit (Figure 7).
2. For setting of 40 CFM to 60 CFM: Place
the rocker switch in the “Low” position
and the first dial in the “Lower” position
then set the second dial to the required
CFM (Figure 8).
3. For settings of 70 CFM to 90 CFM:
Place the rocker switch in the “Low”
position and set the first dial to the
required CFM (Figure 8).
4. For settings of 100 CFM to 120 CFM:
Place the rocker switch in the “High”
position and set the top dial to the
required CFM (Figure 8).
SECTION 6
Optional Air Filter
An air filter (available separately) can be added
to this unit to provide additional filtration of the
intake air. The unit will accept a 10” x 10” x 2”
filter. To install:
NOTE: Adding an air filter will decrease the
airflow of the unit. You will need to increase
the CFM selected in SECTION 5 to account for
the decreased air flow. Filters must be changed regularly. Refer to the filter manufacturer’s
recommendations to determine how often the filter should be changed.
1. Remove the screw securing the access panel cover in place and open the cover to gain
access to the controls and filter area.
2. Ensure the filter is facing the correct way and slide the filter into the slot in the housing.
Make sure the filter is seated all the way to the bottom of the housing (Figure 9).
3. Close the access panel and reinstall the screw holding the access panel in place.
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6728076 Rev. M 4-19 3 of 12
SECTION 7
Completing the Installation
NOTE: When fan is mounted inline and no penetration is made into unconditioned spaces, there
is no need to use 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. Additional material (backing rod, ceiling material) are also not required.
NOTE: This unit is equipped with a wire mesh insect screen. Confirm that the screen is installed
on the inside of the unit on the inlet ducting side.
1. If the screen is not in place, insert the screen into the tab at the base of the unit (make
sure the wider side of the screen is running side to side inside the unit) (Figure 10).
2. Slide the screen to the side with the larger top tab making sure the screen fits behind
the tab (Figure 10).
3. Slide the screen back over towards the smaller top tab making sure the screen fits
behind the tab (Figure 11).
4. Confirm that the screen is being held in place by both top tabs (Figure 11).
5. Close the access panel and reinstall the screw holding the access panel in place.
6. Restore power and test your installation.
SECTION 8
Setting the Controller
The unit mounted controller monitors temperature and humidity of incoming air and allows the
installer to configure optimal ventilation.
With power to the unit turned on, the initial screen will show “OFF”. Press the “ON” button to
show the current temperature and humidity condition. By pressing the “ON” button, the unit
will turn on for continuous air flow using the CFM settings from SECTION 5 Setting the Speed.
ENERGY SAVING MODE
NOTE: This unit is equipped with an Energy Saving Mode that allows you to configure upper
and lower limits for temperature and humidity. By setting these limits, you will help prevent
extreme temperature or humidity changes from entering into the living space.
1. If you have not already pressed the “ON” button in step one of this section, do so now.
Press the “CONFIGURE” button once and the display will show a “C” and “Temp Unit” on
the right hand side.
2. Press the up or down button to display the temperature in Fahrenheit or Celsius.
ON / OFF /
ENERGY SAVING
CONFIGURE UP DOWN
Figure 8
Rocker Switch
9
0
8
0
7
0
L
o
w
e
r
6
0
5
0
4
0
High Low
1
2
0
1
1
0
1
0
0
Top Dial
First Dial
Second Dial
Figure 9
9
0
8
0
7
0
L
o
w
e
r
6
0
5
0
4
0
3
0
High Low
1
3
0
1
2
0
1
1
0
1
0
0
Filter
Screw
Air Flow
Screw
Figure 7
Figure 10
Base Tab
Screen
Larger
Top Tab
Figure 11
Screen
Smaller Top Tab
Screen
Figure 6
Supply from house
Black
Neutral (White)
Ground (Green or Bare)
Fan
Neutral (White)
Green
Black
Green
By others

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6728076 Rev. M 4-19 4 of 12
3. Press the “CONFIGURE” button again to set the upper limit temperature. This is the
temperature that when the outside air coming into the home exceeds, the fan will stop
and enter sampling mode. You will see “Upper Limit” and “Temperature” on the right
hand side. Use the “UP” and “DOWN” buttons to adjust the temperature.
4. Press the “CONFIGURE” button again to set the upper limit humidity level. This is the
humidity level that when the outside air coming into the home exceeds, the fan will stop
and enter sampling mode. You will see “Upper Limit” and “Humidity” on the right hand
side. Use the “UP” and “DOWN” buttons to adjust the temperature.
5. Press the “CONFIGURE” button again to set the lower temperature level. This is the
temperature that when the outside air coming into the home falls below, the fan will
stop and enter sampling mode. You will see “Lower Limit” and “Temperature” on the
right hand side. Use the “UP” and “DOWN” buttons to adjust the temperature.
6. Press the “CONFIGURE” button again to set the lower limit humidity level. This is the humidity
level that when the outside air coming into the home falls below, the fan will stop and enter
sampling mode. You will see “Lower Limit” and “Humidity” on the right hand side. Use the
“UP” and “DOWN” buttons to adjust the temperature. Setting this to 0 or “LO” will override
the humidity set level. This may be necessary in very low humidity areas of the country.
7. Press the “CONFIGURE” button until it returns to the main screen. You will see “ON” in
the top left corner of the display. At this point, the information has been stored.
SECTION 9
Using the Controller
1. Energy Savings Mode: To enter the Energy Savings mode, press the “ON/OFF/ENERGY
SAVINGS” Button until “Energy Savings” appears on the left side of the display. Energy
Savings mode engages the settings configured in SECTION 8 Energy Saving Mode.
2. When the unit is on, the display will show the current conditions (temperature and
humidity level) as well as if it is in Energy Savings mode or not. Other icons/information
that may be on the display include:
Fan icon appears when the fan is on.
“HI°F” appears if the intake temperature is above 150°F.
“Lo°F” appears if the intake temperature is below 15°F.
“Lo%” appears if the intake humidity is below 10%.
3. Optional Heater Unit: An optional heater unit is available for climates that the air coming
into the unit falls below 54°F. To install the unit, follow the direction that are included
with that unit. The display will show a thermometer icon with either a “1” or “1 2” when
the temperature range is at a level where the heating element would come on if present.
Stage 1 - “1” turns on when the intake air temperature is between 39°F and 54°F. Stage
1 and 2 “1 2” turn on when the intake air temperature is between 33°F and 39°F.
4. To restore the factory setting, make sure the unit is in the “OFF” setting. Hold both the
“UP” and “DOWN” buttons for approximately 5 seconds. The “OFF” on the display will
flash to confirm the settings have been restored.
SECTION 10
Optional Motorized Damper
An optional model MD624 - Motorized Damper (sold separately) can be added to the unit.
When connected to the QFAM, the motorized damper will open when the QFAM is energized
and will close when the QFAM turns off. The MD624 also requires a QMDB receptacle box
(sold separately).
For installation, refer to the instructions included with the MD624 and QMDB.
SECTION 11
Use and Care
CAUTION: MAKE SURE POWER IS SWITCHED OFF AT
SERVICE PANEL BEFORE SERVICING THE UNIT.
1. Cleaning the Fan Assembly: Wipe all parts with a dry cloth or gently vacuum the fan.
NEVER IMMERSE ELECTRICAL PARTS IN WATER.
2. Optional Air Filter: If an optional air filter is installed, it should be checked every month
and replaced at least once every 3 months. Reverse the instructions in the SECTION 6
of these instructions to remove filter.
NOTE: If you notice a large amount of insects and debris in the air filter, this could be a sign that
the intake weather hood (roof cap or wall cap) might be compromised and need repair or replacing.
Troubleshooting Guide
Trouble Probable Cause Suggested Remedy
1. Fan does not operate. 1a. Control setting. 1a. Check temperature and humidity level settings. If the intake air is not within the
preset range, the fan will not turn on. Either adjust the settings or wait for the
intake air temperature and/or humidity to change.
1b. A fuse may be blown or a circuit tripped. 1b. Replace fuse or reset circuit breaker.
1c. Wiring is not connected properly. 1c. Turn off power to unit. Check that all wires are connected.
1d Motor has stopped operating. 1d. Replace motor.
2. Fan is operating, but air moves slower than normal. 2a. Obstruction in the ducting. 2a. Check for any obstructions in the ducting. The most common are bird nests in
the roof cap or wall cap where the fan intakes from the outside.
2b. Filter is clogged. 2b. Change air filter (if equipped).
2b. Change/clear bug filter.
3. Fan is operating louder than normal. 3a. Motor is loose. 3a. Turn off power to unit and check that all screws are fully tightened. Restore
power to unit.
3b. Fan blade is hitting housing of unit. 3b. Call your dealer for service.

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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 three (3) 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 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 THREE YEARS 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) REPLACMENT OR REPAIR OF ANY HOUSE FUSES, CIRCUIT BREAKERS OR RECEPTACLES. NOTWITHSTANDING ANYTHING TO 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 [phone]
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, 8am-
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 product to place of purchase.
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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.
Installer: Installation Date:
Place of Purchase: Model Number: