Air King AK917, AK927 Operating Manual

IMPORTANT INSTRUCTIONS -

OPERATING MANUAL

Models: AK917, AK927

Bulb Heat Lamp with 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!

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) 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 power unit.

g) Read all instructions before installing or using exhaust fan.

WARNING: TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, DO

NOT USE THIS FAN WITH ANY SOLID-STATE SPEED CONTROL DEVICE.

WARNING: DO NOT INSTALL OVER A TUB OR MOUNT IN A

SHOWER STALL ENCLOSURE.

a) Do not install into a ceiling thermally insulated to a value

greater than R-40.

b) NEVER place a switch where it can be reached from a tub or

shower.

WARNING: DO NOT USE IN KITCHENS.
WARNING: THIS UNIT IS DESIGNED AND TESTED TO BE A

SUPPLEMENTAL HEATER FOR USE WITH A TIMER OR A SWITCH. IT IS
NOT INTENDED TO BE USED AS THE PRIMARY SOURCE OF HEAT AND
CONTROLLED BY A THERMOSTAT.

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INSTALLATION INSTRUCTIONS
CAUTION:

BEFORE STARTING INSTALLATION.

MAKE SURE POWER IS SWITCHED OFF AT SERVICE PANEL

SECTION 1

Preparing the Exhaust Fan

1. Unpack fan from the carton and confirm that all pieces are present. In addition to
the exhaust fan you should have:

1 - Grill
1 - Damper Assembly (attached)
4 - Mounting Rails
1 - Instruction/Safety Sheet

2. Remove the wire compartment cover by loosening the two screws holding the
cover in place (Figure 1).

Screws

Wire

Compartment

Cover

Figure 1

3. 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, and that insulated hard ducting be used.

Larger duct sizes will reduce noise and airflow
restrictions. 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” on center joists using the provided
mounting rails.

3. Select the most convenient electrical knockout
and remove using a straight-blade screw driver

(Figure 2).

SECTION 2

New Construction

1. Install the rails on the housing and 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 3).

Housing

Joist

Figure 3

Figure 2

Mounting Rails

Figure 4

SECTION 4

Ducting

CAUTION: ALL DUCTING MUST COMPLY WITH LOCAL AND NATIONAL

BUILDING CODES.

1. Remove any tape that might be holding the damper in place during shipping and
connect the ducting to the fan’s duct collar (Figure 5). Secure in place using tape
or screw clamp. Always duct the fan to the outside through a wall or roof cap.

Figure 5

SECTION 5

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. If you choose to wire the unit from the inside,
you will need to remove the blower assembly and internal wiring compartment. Both
methods are equally effective.

1a. Wiring Fan/Heat Bulb(s) Independently: Run wiring from an approved wall switch

carrying the appropriate rating. One neutral (white), one ground (green or bare
copper), and two hot (black and blue). 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.

1b. From where you have access to inside the fan’s junction box, connect the white

wire from the house to the white wire from the fan. Connect one hot (black) wire
from the house to the black wire from the fan (this is the fan control). Connect the
second hot (blue) wire from the house to the blue wire from the fan (this is the heat
bulb control). Connect the ground wire from the house to the green wire from the
fan (Figure 6). Use approved methods for all connections.

NOTE: On model AK927 connect the Hot (Blue) wire from the house to the two Blue
wires from the unit.

Supply from house

Hot (Black)

Ground

SECTION 3

Existing Construction

1. Set housing in position between the joist and trace an outline onto the ceiling
material (Figure 4). Set housing aside and cut opening, being careful not to cut or
damage any electrical or other hidden utilities. Install the rails on the housing and
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 3).

Figure 6

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Hot (Blue)

From Fan

White

2. Wiring Fan/Heat Bulb together: Run wiring from an approved wall switch carrying
the appropriate rating. One neutral (white), one ground (green or bare copper),
and one hot (black). 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.

2a. From where you have access to inside the fan’s junction box, connect the one

white wire from the house to the white wire from the fan. Connect the black wire
from the house to both the black and blue wires from the fan. Connect the ground
wire from the house to the green wire from the fan (Figure 7). Use approved
methods for all connections.

NOTE: On model AK927 connect the hot (black) wire from the house to the black and
two blue wires from the unit.

Montant

Grille

Ressort

Hot (Black)

Ground

Hot (Blue)

From Fan

White

Figure 7

3. Reinstall the wire compartment cover using the two screws removed in Step 2
of SECTION 1 Preparing the Unit. Make sure all wires are tucked inside of the
compartment and are not being pinched or showing through.

SECTION 6

Completing the Installation

1. Insert plug from fan into the receptacle located under the light socket (Figure 8).

Supply from house

Figure 9

3. Install a 250 watt maximum, R-40 Type A heat lamp (not included) into the socket and
center the grill around the lamp.

NOTE: Model AK927 uses 2 - 250 watt maximum R-40, Type A heat lamps.

4. Restore power and test your installation.

SECTION 7

Use and Care

CAUTION: MAKE SURE POWER IS SWITCHED OFF AT SERVICE PANEL

BEFORE STARTING INSTALLATION.

CAUTION: ALLOW LAMP(S) TO COOL BEFORE CLEANING THE UNIT OR

REPLACING THE LAMPS.

NOTE: On installations where the ventilation fan and heat lamps are controlled

independently: After extended use of the heat lamps without the ventilation fan operating,
temperature sensing devices inside the unit may engage the ventilation fan for a time
to maintain conditions inside of the unit enclosure. Once conditions inside of the unit
enclosure are similar to room ambient conditions, the fan will disengage. This fan cycling
will repeat as needed.

1. Cleaning the Grill: Remove heat lamp(s) and detach grill springs from posts to
release grill from housing. 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 Completing
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.

Figure 8

2. Remove grill from carton and attach springs from grill to posts on either side of
housing (Figure 9).

CAUTION: ALLOW LAMP(S) TO COOL BEFORE CLEANING THE UNIT OR

REPLACING THE LAMPS.

3. Changing the Heat Lamps: Disconnect power to the unit. Unscrew heat lamp(s)
from lamp holder and replace with 250 watt maximum, R-40, type A heat lamp.

Troubleshooting Guide

Trouble Probable Cause Suggested Remedy

1. Fan does not operate when the switch is on. 1a. A fuse may be blown or a circuit tripped. 1a. Replace fuse or reset circuit breaker.
1b. Connector plug from motor is not plugged in. 1b. Turn off power to unit. Remove Grill and plug motor into receptacle

in housing. Restore power to unit.
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. 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. 3a. Turn off power to unit. Remove grill 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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