Zephyr Titan AK7636AS Installation guide

Use, Care, and Installation Guide
www.zephyronline.com
Model number:
Serial Number:
JUN18.0201 © Zephyr Ventilation LLC.
Titan
AK7636AS
AK7642AS
AK7648AS
AK7654AS
AK7660AS
READ AND SAVE THESE INSTRUCTIONS

www.zephyronline.com

1
SAFETY NOTICE................................................................. 2-3
LIST OF MATERIALS....................................................... 4
INSTALLATION
Ducting Calculation Sheet....................................... 5
Mounting Height & Clearance................................ 6
Ducting Options........................................................... 7
6SHFL¿FDWLRQV ............................................................... 8
Mounting the Range Hood...................................... 9
Single Blower Horizontal Ducting Conversion 10-11
PBD-1300A Dual Blower Vertical Ducting........ 12
PBD-1300A Dual Blower Horizontal Ducting... 13
FEATURES & CONTROLS
Electronic LCD Controls........................................... 14
Optional Remote Control......................................... 15
MAINTENANCE
Cleaning, Filter Removal & Lights....................... 16
TROUBLESHOOTING................................................................ 17
ACT™ CONVERSION................................................................ 18
WIRING DIAGRAMS................................................................... 19
LIST OF PARTS AND ACCESSORIES.............................. 20
WARRANTY.................................................................................... 21
PRODUCT REGISTRATION.................................................... 22
Table of Contents

Important Safety Notice
READ AND SAVE THESE INSTRUCTIONS
2
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WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT USE THIS FAN WITHANY SOLID-STATE CONTROL DEVICE.
WARNING
TO REDUCE THE RISK OF FIRE ELECTRIC SHOCK, OR INJURY TO PERSONS, 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 unit, switch power off at service panel and lock panel 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.
CAUTION
For general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors. Take care when using cleaning
agents or detergents. Suitable for use in household cooking area.
WARNING
TO REDUCE THE RISK OF RANGE TOP GREASE FIRE:
a. Never leave surface units unattended at high settings. Boilovers cause smoking and greasy spillovers that may ignite. Heat oils slowly
on low or medium settings.
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d. Use proper pan size. Always use cookware appropriate for the size of the surface element.
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f. Use high setting on hood only when necessary.
g. Don’t leave hood unattended when cooking.
h. Always use cookware and utensils appropriate for the type of and amount of food being prepared.
WARNING
TO REDUCE THE RISK OF INJURY TO PERSONS IN THE EVENT OF ARANGE TOP FIRE, OBSERVE THE FOLLOWING:
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b. NEVER PICK UPA FLAMING PAN – You may be burned.
c. DO NOT USE WATER, including wet dishcloths or towels – a violent steam explosion will result.
d. Use an extinguisher ONLY if:
1. You know you have a Class ABC extinguisher, and you already know how to operate it.
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WARNING
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:
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,QFOXGLQJ¿UHUDWHGFRQVWUXFWLRQ
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back-drafting. Follow the heating equipment manufacturer’s guideline and safety standards such as those published by the National
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the local code authorities.
c. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
d. Ducted fans must always vent to the outdoors.
e. NEVER place a switch where it can be reached from a tub or shower.
f. Make sure the power is off before installing, wiring or maintenancing.

Important Safety Notice
3
WARNING
TO REDUCE THE RISK OF FIRE, USE ONLY METAL DUCTWORK.
CAUTION
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attics, crawl spaces or garages.
OPERATION
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and loose clothing.
The manufacturer declines all responsibility in the event of failure to observe the instructions given here for installation,
maintenance and suitable use of the product. The manufacturer further declines all responsibility for injury due to
negligence and the warranty of the unit automatically expires due to improper maintenance.
*NOTE: Please check www.zephyronline.com for revisions before doing any custom work.
ELECTRICAL REQUIREMENTS
Important:
Observe all governing codes and ordinances.
It is the customer’s responsibility:
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- To assure that the electrical installation is adequate and in conformance with National Electrical Code, ANSI/NFPA 70
latest edition* or CSA standards C22.1-94, Canadian Electrical Code, Part 1 and C22.2 No.0-M91 - latest edition** and
all local codes and ordinances.
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ground path is adequate.
Do not ground to a gas pipe.
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Do not have a fuse in the neutral or ground circuit.
*National Fire Protection Association Batterymarch Park, Quincy, Massachusetts 02269
** CSA International 8501 East Pleasant Valley Road, Cleveland, Ohio 44131-5575
This appliance requires a 120V 60Hz electrical supply and connected to an individual properly grounded branch circuit
protected by a 15 or 20 ampere circuit breaker or time delay fuse. Wiring must be 2 wire with ground. Please also refer to
Electrical Diagram on product.
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and install appropriate connector if necessary.
FEDERAL COMMUNICATION COMMISSION INTERFACE STATEMENT
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one of the following measures:
. Reorient or relocate the receiving antenna.
. Increase the separation between the equipment and receiver.
. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
. Consult the dealer or an experienced radio/TV technician for help

4
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MODELS: AK7636AS, AK7642AS, AK7648AS, AK7654AS, AK7660AS
PARTS SUPPLIED
1 - Hood
2 - Duct covers, 1 upper & 1 lower
1 - Duct cover bracket
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2 - LED light bulbs, AK7636AS & AK7642AS
4 - LED light bulbs, AK7648AS, AK7654AS & AK7660AS
LQURXQGVWDUWLQJFROODUfor single blower ducting
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1 - Hardware package
PARTS NOT SUPPLIED
- Ducting, conduit and all installation tools
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- Duct Cover Extension Accessory
- Remote Control Accessory
List of Materials

5
Installation – Ducting Calculation Sheet
Duct pieces To t a l
Equivalent number
length x used =
3-1/4” x 10”
Rect.,
straight
1 Ft. x ( ) = Ft.
3-1/4” x 10”
Rect.to
6” round
transition
5 Ft. x ( ) = Ft.
3-1/4” x 10”
Rect.to
6” round
transition
900 elbow
20 Ft. x ( ) = Ft.
6”, 7”, 8”, 10”
Round,
900
15 Ft. x ( ) = Ft.
6”, 7”, 8”, 10”
Round,
450
9 Ft. x ( ) = Ft.
Ft.
6”, 7”, 8”, 10”
Round,
straight
1 Ft. x ( ) = Ft.
Subtotal column1 =
Duct pieces To t a l
Equivalent number
length x used =
6”, 7”, 8”, 10”
Round, wall
cap with
damper
30 Ft. x ( ) = Ft.
Ft.
Ft.
Ft.
6”, 7”, 8”, 10”
Round
roof cap
30 Ft. x ( ) = Ft.
Subtotal column2 =
Subtotal column1 =
Total ductwork =
MaximumDuct Length:For satisfactory air movement,
the total duct length
should not exceed 100 equivalent feet.
6” roundto
3-1/4” x 10”
rect.
transition
1 Ft. x ( ) = Ft.
6” roundto
3-1/4” x 10”
rect.
transition
900 elbow
16 Ft. x ( ) = Ft.
7” roundto
3 1/4” x 10”
rect.
transition
8 Ft. x ( ) = Ft.
7” roundto
3-1/4” x 10”
rect.
transition
900 elbow
23 Ft. x ( ) = Ft.
elbow
elbow
7” to 6” or
8” to 7” Round
tapered
reducer
25 Ft. x ( ) = Ft.
3-1/4” x 10”
Rect.900
elbow
15 Ft. x ( ) = Ft.
3-1/4” x 10”
Rect.450
elbow
9 Ft. x ( ) = Ft.
3-1/4” x 10”
Rect.900
flat elbow
24 Ft. x ( ) = Ft.
3-1/4” x 10”
Rect.
wallcap
with damper
30 Ft. x ( ) = Ft.
Ft. x ( ) = Ft.
15
6”, 7“, 8”
Round
in-line
damper

Installation – Mounting Height & Clearance
6
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DUCTING
A minimum of 8” round duct must be used to
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internal blower and 10” round duct for dual internal
blower.
Always use rigid type metal ducts only. Flexible
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available duct run when using elbows, transitions
and caps.
ALWAYS, when possible, reduce the number or
transitions and turns. If long duct run is required,
increase duct size.
If turns or transitions are required; install as far
away from hood duct output and as far apart,
between the two as possible.
Minimum mount height between range top to hood
bottom should be no less than 24”.
Maximum mount height should be no higher than
34”.
It is important to install the hood at the proper
mounting height. Hoods mounted too low could
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mounted too high will be hard to reach and will
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If available, also refer range manufacturer’s height
clearance requirements and recommended hood
mounting height above range.
Vertical Ducting:
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Horizontal Ducting:
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DAMAGE-SHIPMENT / INSTALLATION:
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installation.
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unit to the store in which it was bought for
repair or replacement.
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or replacement is the responsibility of the
customer.
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WKDQWKHFXVWRPHUUHSDLURIUHSODFHPHQWPXVW
be made by arrangement between customer
and installer.
24” min.
34” max.
min. A
max. B
min. C
max. D
Standard Extension
Hood Heights Duct Cover Duct Cover
minimum ducted (A) 30” 49“
maximum (B) 42-1/2” 80”
Ceiling Heights
minimum ducted (C) 90” (7’ 6”) 109“ (9‘ 1”)
maximum (D) 112-1/2” (9’ 4-1/2“ ) 150” (12’ 6”)
36”

7
WARNING FIRE HAZARD
NEVER exhaust air or terminate duct work into spaces between walls, crawl spaces, ceiling, attics or garages.
All exhaust must be ducted to the outside.
Use rigid metal ductwork only.
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Some Ducting Options
Installation – Ducting Options
side wall cap
w/ gravity damper
Soffit or crawl space
Roof Pitch w/
Flashing & Cap
side wall cap
w/ gravity damper

8
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Installation – 6SHFL¿FDWLRQV
3 1/2”
4”
(36”) 35 15/16, (42”) 41 15/16”, (48”) 47 15/16”
(54“) 53 7/8”, (60“) 59 7/8”
14 5/16”
24”
13 15/16”
7 7/8” or
9 15/16”
Standard
Min. - 30”
Max. - 42 1/2”
Z1C-0076
Z1C-0176
Min. - 49”
Max. - 80”
(36”, 42”) 15 7/8”
(48”, 54”, 60”) 22”
4 3/4”
15”
(36”) 25 1/4”, (42”) 31 3/16”
(48”) 19 1/16”, (54”) 25 1/16”
(60”) 30 7/8”
(48”) 37 3/16”, (54”) 43 1/8”
(60”) 49”
4”
11 9/16”
7 13/16”

9
A
C
B
15”
4-3/4”
(36”, 42”)
11-13/16”
(48”,54”,60”)
17-11/16”
(36”) 25-1/4”, (42”) 31-3/16”
(48”) 19-1/16”, (54”) 25-1/16”
(60”) 30-7/8”
C/L
24" min.
2
1
Duct Cover
Bracket
(48”) 37-3/16”, (54”) 43-1/8”, (60”) 49”
Installation – Mounting the Range Hood
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PLQLPXPIURPUDQJHWRS
2. Plum and mark center line.
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5. Mark mounting spread from C/L on line B and C according to
diagram.
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way, leave approxamately 3/8” exposed. Note: wood blocking
may need to be added behind the drywall if no studs are
present. Wall anchors may also be used but check local
codes for compliance. Failure to use suitable wall anchors
and screws to hold the weight of the hood could result in
personal injury or damage to cooking surface or counter.
7. Install round duct collar with backdraft damper to top or rear of
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8. If ducting hood through rear of hood body, cut duct access hole in
wall and prepair ducting.
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11. Prepair and connect electrical and install duct work and duct tape.
12. Power up hood and check for leaks around duct tape.
13. Place telescopic duct covers onto hood and extend inner
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CAUTION: At least two installers are required
due to the weight and size of the hood.
!
WARNING: Electrical wiring must be done by a qualified person(s) in
accordance with all applicable codes and standards. This range hood must be
properly grounded. Turn off electrical power at service entrance before wiring.
!
Cable Lock
Warning:
For personal safety, remove house fuse or open circuit breaker before beginning installation. Do not
use extension cord or adaptor plug with this appliance.
Follow national electrical codes or prevailing local codes and ordinances.
Electrical Supply:
This appliance requires a 120V 60Hz electrical supply, and connected to an individual, properly
gounded brand circuit, protected by a 15 or 20 ampere circuit breaker or time delay fuse. Wiring must
be 2 wire w/ground. Please refer to Electrical Diagram labeled on product.
Cable Lock:
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requirements and codes, purchase and install appropriate connector if necessary.

10
www.zephyronline.com
1. Disconnect blower plug and white and black
power cables.  5HPRYHVFUHZVIURPLQWHULRURIKRRGERG\
attaching single blower plate to top of hood
body. Remove single blower and single blower
plate.
3. Knock out rear plate C for 8 inch round rear
ducting.
C
This range hood is equipped standard with a 8” round vertical duct option. To convert from 8” round vertical to 8”
round horizontal ducting or 3-1/4” x 10” rectangular horizontal ducting please following the instructions below.
VERTICAL TO HORIZONTAL DUCTING CONVERSION
Installation – Single Blower Horizontal Ducting Conversion
 5HPRYHVFUHZVDWWDFKLQJEORZHUWREORZHU
plate. Turn blower 180 degrees and reattach to
blower plate.

11
6. Attach 8” round duct collar to back of hood body
XVLQJ0[VFUHZV
7. From inside hood body, position top cover plate
to top of hood body. From outside hood body,
attach top cover plate to top of hood body using
[VFUHZV
8. Connect single and dual blower PCB blower plug
and white and black power cables.
Installation – Single Blower Horizontal Ducting Conversion
5. Position single blower with single blower plate
as shown. Be sure to tuck back of single blower
plate into tabs at back of hood. Secure single
EORZHUSODWHWREDFNRIKRRGXVLQJVFUHZV
removed from step 2.

12
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Installation – PBD-1300A Dual Blower Vertical Ducting
1. Disconnect blower plug and white and black
power cables.  5HPRYHVFUHZVIURPLQWHULRURIKRRGERG\
attaching single blower plate to top of hood
body. Remove single blower and single blower
plate.
 5HPRYHVFUHZVDWWDFKLQJVLQJOHEORZHUWR
single blower plate.  $WWDFKVLQJOHEORZHUWRGXDOEORZHUSODWHE\
previously removed screws from step 3.
This range hood is equipped standard with a single blower vertical duct option. To convert from single blower
vertical ducting to dual blower vertical ducting please following the instructions below.
5. Position dual blower inside hood body as
shown. Be sure to tuck dual blower plate into
EORZHUSODWHWDEV6HFXUHGXDOEORZHUE\
screws previously removed from step 2.
6. Attach 10” round blower collar to top of hood
ERG\E\0[VFUHZV&RQQHFWEORZHU
wire extension cable to new blower and connect
plugs from each blower to female plugs behind
switch panel.

13
5. Knock out plate A for dual blower horizontal
ducting. 6. Position dual blower inside hood body. Attach by
VFUHZVSUHYLRXVO\UHPRYHGIURPVWHS
7. From inside hood body, position top cover plate
to top of hood body. From outisde hood body,
attach top cover plate to top of hood body using
[VFUHZV
8. Attach 10 inch round blower collar to back of
KRRGXVLQJ0[VFUHZV&RQQHFWEORZHU
wire extension cable to new blower and connect
both plugs from each blower to female plugs
behind switch panel.
A
Installation – PBD-1300A Dual Blower Horizontal Ducting
Follow Steps 1 through 4 on page 13, then continue PBD-1300A horiztantal ducting installation by following the
steps below.
7. Attach dual blower PCB box to electronics
EUDFNHWE\VFUHZV 8. Connect single and dual blower PCB blower
plug and white and black power cables.

14
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1. Power / Delay Off
Power Button Function
On/Off button will turn power on and off for entire hood (fan and lights). The hood will remember the last speed and light level it
was turned off at.
Delay Off Button Function
With the fan on, press and hold the On/Off button for three seconds. The fan will change to speed 1 and the 10 minute delay off
timer will start. A countdown timer will show on the display indicating the time left until the fan and lights automatically turn off.
Pressing the On/Off button while the Delay Off Function is enabled will turn the hood off and cancel the Delay Off Function.
ACT™Verification
Airflow Control Technology (ACT™) allows the installer to set the maximum blower CFM to align with local codes and regulations.
To verify the maximum blower CFM:
With hood off, hold the On/Off button for three seconds. The Display will show if ACT™ is disabled and set to the maximum
CFM or if ACT™ is enabled and set to one of the restricted maximum CFM levels of 590, 390 or 290.
2. Speed Selection
The 6 speed levels are selected by pressing Fan - to decrease and Fan + to increase speed levels. The Display indicates the
speed level selected.
ACT™Enabled Speed Selections
When ACT™ is enabled, the number of fan speeds will be reduced to Maximum 3 speeds.
3. Lights On/Dim/Off
Switch lights on by pressing Lights button once, press a second time to dim and again to shut off lights.
4. Display
The display window indicates speed levels and features such as baffle filter clean reminder, delay off and clean air indicator.
Filter Clean Reminder
After 30 hours of fan usage the words “Clean grease filters” will show on the Display indicating it is time to clean the filters.
To Reset: With hood off, hold the Fan - button for 3 seconds until the display words “Clean grease filters” turns off
Clean Air
Clean Air is a feature that turns the fan on every 4 hours for 10 minutes to remove stagnant air in the kitchen.
To enable Clean Air Function:
With hood off, hold the Fan - button and Fan + button simultaneously for three seconds. The words “CleanAir Function
Activated” will illuminate and the fan will turn on speed 1 for 10 minutes. After 10 minutes the fan will turn off and the 4 hour
timer will begin.
To disable Clean Air Function:
With hood off, hold the Fan - button and Fan + button simultaneously for three seconds. The words “CleanAIr Function
Deactivated” will illuminate indicating the function has been disabled.
When the Clean Air Function is enabled the fan will turn on speed 1 for 10 minutes every 4 hours of non fan usage. After 10
minutes the fan will turn off and the 4 hour timer will reset.
If the user changes the fan speed while the Clean Air Function is in use, the Clean Air Function will stop. If the user presses the
On/Off button at any time the 4 hour Clean Air timer will reset.
Optional Remote Control Pairing
To create a unique link between your hood and optional remote control please follow these steps.
With Hood off, press and hold the Lights button until the Display shows the words “Remote Pairing...” then press any button on
the remote, the Display will then show the words “Remote Paired” indicating the remote control pairing is complete.
Power / Delay Off
Adjust 6 Speed Levels
Display
Lights On/Dim/Off
Features & Controls – Electronic LCD Controls

15
RF REMOTE MAINTENANCE:
Clean the remote control using non abrasive detergents
Follow instructions below for replacing battery.
8VLQJDVPDOOÀDWKHDGVFUHZGULYHUUDLVHWKHFRYHURIWKHEDWWHU\
GRRUALQRUGHUWRDFFHVVWKHEDWWHU\FRPSDUWPHQW),*
Remove the battery and replace with battery type A23 12V.
Negative end of battery should face the spring inside the remote.
Re-install battery door and recycle old battery.
RF REMOTE FEATURES:
The RF remote control is equipped with a magnet on the back for easy
storage. The remote may be placed on any magnetic surface such as a
refrigerator or the Zephyr remote holder, FIG. 1. The remote holder can
be inserted into a standard electrical outlet for easy storage. Note: The
remote holder does not charge the RF remote.
Maximum remote control communication distance is 15 feet from the hood.
REMOTE PAIRING: To create a unique link between your hood and remote control please follow these steps:
1. With hood off, press and hold the “lights” button on the hood until “Remote Pairing” shows on the display screen.
2. Press the any button on the remote, the dispaly will show “Remote Paired” indicating the pairing is complete.
RF REMOTE FUNCTIONS:
FIG. 1
FIG. 2
Blower On / Speed Selection
Press to power on blower and cycle through all six blower speeds.
Blower On / Power Off
By pressing , the blowers will power on at the last speed setting. Press
again and the entire hood will power off, including lights.
Delay Off
Lights On / Dim / Off
Switch lights On by pressing once, again to dim and again to switch Off.
Blower On/
Speed Selection 1
1
2
3
4
Blower On/
Power Off
2
10 Min Delay Off 3Lights On/Dim/Off
4
By pressing , the blower and lights will enter Delay Off mode. The blower wi
l
change to speed 1 and shut down after 10 minutes.
A
-
+
FCC Caution: To assure continued compliance, any changes or modifications not expressly approved by the party responsible for compli-
ance could void the user’s authority to operate this equipment. (Example - use only shielded interface cables when connecting to computer
or peripheral device. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions. (1) This device
may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause
undesired operation.
THE RF REMOVE CONTROL IS AN OPTIONAL
ACCESSORY NOT INCLUDED WITH THE HOOD AND
MUST BE PURCHASED SEPARATELY
Features & Controls – Optional Remote Control

16
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SURFACE MAINTENANCE:
Do not use corrosive detergents, abrasive detergents or oven cleaners.
Do not use any product containing chlorine bleach or any product containing chloride.
Do not use steel wool or abrasive scrubbing pads which will scratch and damage surface.
Cleaning Stainless Steel
&OHDQSHULRGLFDOO\ZLWKZDUPVRDS\ZDWHUDQGFOHDQFRWWRQFORWKRUPLFUR¿EHUFORWK$OZD\VUXELQWKHGLUHFWLRQRIWKHVWDLQOHVV
steel grain. To remove heavier grease build up use a liquid degreaser detergent.
After cleaning use a non-abrasive stainless steel polish/cleaners, to polish and buff out the stainless luster and grain.Always
VFUXEOLJKWO\ZLWKFOHDQFRWWRQFORWKRUPLFUR¿EHUFORWKDQGEXIILQWKHGLUHFWLRQRIWKHVWDLQOHVVVWHHOJUDLQ
6WDLQOHVV6WHHO%DIÀH)LOWHUV 
7KHVWDLQOHVVVWHHOEDIÀH¿OWHUVDUHLQWHQGHGWRWUDSUHVLGXHDQGJUHDVHIURPFRRNLQJ$OWKRXJKWKH¿OWHUVVKRXOGQHYHUQHHG
replacing, they are required to be cleaned every 30 days or more often depending on cooking habits.
)LOWHUVPD\EHSODFHGLQGLVKZDVKHUDWORZKHDWRUVRDNHGLQKRWVRDS\ZDWHU'U\¿OWHUVDQGUHLQVWDOOEHIRUHXVLQJKRRG
5HPRYLQJ%DIÀH)LOWHUV 
 3XVK¿OWHUWRZDUGEDFNRIUDQJHKRRGXVLQJKDQGOHV 
 3LYRWIURQWRI¿OWHUGRZQZDUG 
 5HPRYH¿OWHUE\SXOOLQJDZD\IURPKRRG
Cleaning the Grease Tray
7KHJUHDVHWUD\LVLQWHQGHGWRFDWFKUHVLGXHDQGJUHDVHWKDWPD\GULSIURPWKHEDIÀH¿OWHUV7KHJUHDVHWUD\VKRXOGEHFOHDQHG
ZKHQEDIÀH¿OWHUVDUHFOHDQHG&OHDQWKHJUHDVHWUD\E\VRDNLQJLQKRWVRDS\ZDWHUDQGJHQWO\VFUXELQJDQ\UHVLGXHRIIZLWKD
soft terry cloth. Dry grease tray and re-install before using hood.
REPLACING LIGHT BULBS
Make sure all power is turned off.
Remove by turning bulb counter clockwise. Note: Bulb does not unscrew; it turns 60 degrees, stops and falls out. If bulbs are
GLI¿FXOWWRWXUQGXHWRSURORQJHGXVH¿UPO\DWWDFKDJODVVVXFWLRQFXSDSSUR[LPDWHO\WKHGLDPHWHURIWKHEXOERUXVHDUXEEHU
latex glove and turn counter clockwise. FIG. 3.
Directional Lighting
The light bulbs can be tilted forwards and backwards to better direct light over your cooking surface. FIG. 4.
Replacement bulbs are available to purchase directly from Zephyr. Purchase online at http://store.zephyronline.com or call us at
1.888.880.8368
1
2
3
Maintenance – Cleaning, Filter Removal & Lights
FIG. 3 FIG. 4

17
TROUBLESHOOTING PROCEDURES
Issue Cause What to do
After installation,
the unit doesn’t
work.
1. The power source is not turned ON. 1. Make sure the circuit breaker and the unit’s
power is ON.
2. The power line and the cable locking connector
is not connecting properly. 2. Check the power connection with the unit is connected properly.
3. The switch board and control board wirings are
disconnected. 3. Make sure the wirings between the switch board and control board are connected
properly.
4. The wires on control board are loose. 4. Make sure the wires on the control board are
connected properly.
5. The switch board or control board is defective. 5. Change the switch board or control board.
Light works, but
the blower is not
turning.
1. The blower is defective, possible seized. 1. Change the blower.
2. The thermally protected system detects if the
blower is too hot to operate and shuts the blower
down.
2. The blower will function properly after the
thermally protected system cool down.
3. Damaged capacitor. 3. Change the capacitor.
4. The blower wire is not connected. 4. Make sure the blower wire is plugged into the
molex connector.
The unit is
vibrating. 1. The blower is not secure in place. 1. Tighten the blower in place.
2. Damaged blower wheel. 2. Change the blower.
3. The hood is not secured in place. 3. Check the installation of the hood.
The blower is
working, but the
lights are not.
1. Defective halogen bulb. 1. Change the halogen bulb.
2. The light bulb is loose. 2. Tighten the light bulb.
3. The light bulb plug is disconnected. 3. Check the light bulb plug connection.
The hood is
not venting out
properly.
1. The hood might be hanging to high from the
cook top. 1. Adjust the distance between the cook top and the bottom of the hood within 24” and 34”
range.
2. The wind from the opened windows or opened
doors in the surrounding area are affecting the
ventilation of the hood.
2. Close all the windows and doors to eliminate
WKHRXWVLGHZLQGÀRZ
3. Blockage in the duct opening or duct work. 3. Remove all the blocking from the duct work or
duct opening.
4. The direction of duct opening is against the wind. 4. Adjust the duct opening direction.
5. Using the wrong size of ducting. 5. Change the ducting to correct size.
0HWDO¿OWHULV
vibrating.  0HWDO¿OWHULVORRVH  &KDQJHWKHPHWDO¿OWHU
2. Spring clip is broken. 2. Change the spring clip.
The blower turns
on by itself. 1. The clean air function has been enabled turning the blower on every 4 hours. 1. Disable the clean air function by following the steps on page 14.
Troubleshooting

18
www.zephyronline.com
ALUÀRZ&RQWURO7HFKQRORJ\$&7
Some local codes limit the maximum amount of CFM a range hood can move. ACT™allows you to control the
maximum blower CFM of select Zephyr Ventilation range hoods without the need for expensive make up air kits.
ACT™HQDEOHVWKHLQVWDOOHUWRHDVLO\VHWWKHPD[LPXPEORZHUVSHHGWRRQHRIWZRPRVWFRPPRQO\VSHFL¿HG&)0
levels; 590, 390 or 290 CFM. The usage ofACT™may not be necessary for your installation. Please check your
local codes for CFM restrictions.
By default the maximum blower CFM is set to 750.
ACT™ NOT AVAILABLE WITH 1300 CFM DUAL INTERNAL BLOWER OPTION
To enable ACT™
1. Before hood installation, gain access to PC board by following the steps shown in FIG. C.
2. Change plastic jumper positioning as shown in FIG. D to set the desired maximum blower CFM.
3. Re-install PC board & continue with hood installation.
4. Remove the appropriate foil CFM sticker included with the hood literature and place inside the hood body below
the wiring diagram or in another clearly visible location.
NOTE: After re-positioning the jumper and powering on the hood, the CFM cannot be changed again.
To verify if your installer enabled ACT™
With hood off, hold the On/Off button for three seconds. The Display will show if ACT™ is disabled and set to the
maximum CFM or if ACT™ is enabled and set to one of the restricted maximum CFM levels of 590, 390 or 290.
There should also be a foil label located inside the hood body near the wiring diagram that indicates the blower CFM.
ACT™ Conversion
CAUTION:
Hood must be disconnected from main power prior to performing the
conversion instructions listed below. Failure to do so could result in
personal injury or damage to the product.
!
1357
2468
1357
2468
1357
2468
1357
2468
Max. Blower CFM 750
Jumper 7-8
DEFAULT POSITION
Max. Blower CFM
590
Jumper 5-6 Max. Blower CFM
390
Jumper 3-4 Max. Blower CFM
290
Jumper 1-2
1357
2468
PC Board
Jumper Pins Plastic
Jumper
FIG. C
FIG. D
Models: AK76
- Locate PC board box on top of blower housing.
- Remove 4 screws attaching PC board cover.