Air King AK80H OPERATING MANUAL

IMPORTANT INSTRUCTIONS -

OPERATING MANUAL

Model: AK80H

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!

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:

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.

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.

d) Ducted fans must always be vented to the outdoors.
e) 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.
f) This unit must be grounded.
g) To avoid motor bearing damage and noisy and/or unbalanced

impellers, keep drywall spray, construction dust, etc. off power unit.
h) NEVER place a switch where it can be reached from a tub or

shower.
i) Suitable for use with electronic speed control device.
j) Do not install into ceilings thermally insulated to a value greater

than R40.

CAUTION: FOR GENERAL VENTILATING USE ONLY. DO NOT

USE TO EXHAUST HAZARDOUS OR EXPLOSIVE MATERIALS AND
VAPORS.

WARNING: DO NOT USE IN KITCHENS.

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

c) When cutting or drilling into wall or ceiling, do not damage

electrical wiring and other hidden utilities.

SAVE THESE INSTRUCTIONS

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INSTALLATION INSTRUCTIONS
CAUTION: MAKE SURE POWER IS SWITCHED OFF AT SERVICE PANEL BEFORE

STARTING INSTALLATION.

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. 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” or 24” on center joists using the 4
provided mounting rails.

3. Select the most convenient electrical knockout and
remove using a straight-blade screw driver (Figure 1).

Figure 1

SECTION 2

New Construction

1. Install the side 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 2).

1. Connect the ducting to the fan’s duct collar (Figure 4). Secure in place using tape or screw

clamp. Always duct the fan to the outside through a wall or roof cap.

Ducting

Duct
Collar

Figure 4

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. External Wire Compartment: Remove the wire compartment cover screw and place

cover in a secure place (Figure 5).

Screw

Housing

Joist

Figure 2

Mounting Rails

SECTION 3

Existing Construction

1. Set housing in position between the joist and trace an outline onto the ceiling material
(Figure 3). Set housing aside and cut opening, being careful not to cut or damage any
electrical or other hidden utilities. Install the side 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 2).

Joist

Wire
Compartment
Cover

Figure 5

1b. Internal Wire Compartment: Remove the screw holding the venturi in place. Lift the

venturi up and at an angle to slide it out of the housing (Figure 6). Remove the wire
compartment cover screw and place the cover in a secure place (Figure 7).

Venturi

Screw

Figure 6

Humidity Set

Screw

Point Knob

Figure 3

Wire Compartment

SECTION 4

Ducting

CAUTION: ALL DUCTING MUST COMPLY WITH LOCAL AND NATIONAL

BUILDING CODES.

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Figure 7

NOTE: If the fan motor plug is connected to the fan housing receptacle, unplug so the blower
assembly can be completely removed.

Cover

2. 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 box connect 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 Red 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.

3. From where you have chosen to access the fan’s junction box, connect the white wire
from the house to the white wire from the fan. Connect the wire from the automatic
position on the wall switch to the black wire from the fan, connect the wire from the
manual On position on the switch to the red wire from the fan. Connect the ground
wire from the house to the green wire from the fan housing (Figure 8). Use approved
methods for all connections.

Supply from house

Ground

White

Hot (Black)

Red

Figure 8

NOTE: The fan’s receptacle wires might need to be pulled outside compartment for connection.
Only pull the three loose wires outside of compartment. Additional wires will be present.

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

SECTION 6

Completing the Installation

1. If the fan’s blower assembly was removed during the wiring process, reinstall the
blower by reversing the directions in Section 5 (Wiring), Step 1b.

2. Connect the wire harness by plugging the 3 pin quick connect end into the receptacle
located on the side of the wire compartment cover. Confirm that the 5 pin quick connect
end is plugged into the receptacle from the blower assembly. These cords will only fit
one way into the receptacles (Figure 9).

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 10).

Figure 10

4. Restore power and test your installation.

SECTION 7

Setting the Humidistat

This fan is equipped with a humidity sensor that automatically turns the fan on when humidity
is 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 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 SERVICE PANEL BEFORE

SERVICING THE UNIT.

1. Cleaning the Grill: Remove 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 5 Finishing 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 9

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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