Trade-wind PMB02 User manual

Installation Instructions Revised 10/13/2015 Copyright (C) 2008 Proverbs 22:29 Page 1
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INSTALLATION INSTRUCTIONS &
USE & CARE GUIDE
PMB Series Models
PMB Series Models
Model
Width
&
Depth
CFM
Type of
Motor &
Blower
PMB02
22” x 12”
240
Internal
PMB03 *
22” x 12”
390
Internal
PMB06
22” x 12”
600
Internal
* 390CFM Code Compliant
PMB06
Before beginning installation, please thoroughly read and become familiar with these instructions. Installation and
service must be completed by a qualified installer. Failure to properly install this product may void the warranty.
Installer:
Please leave Installation Instructions with the range hood liner.
Owner:
Please keep Installation Instructions for local electrical inspector’s use and for future reference.
WARNINGS: Must be followed carefully to avoid personal injury.
IMPORTANT: Must be followed carefully to avoid damage or incorrect installation.
TIPS: Contain helpful information to facilitate installation.
READ AND SAVE THESE INSTRUCTIONS
WARNING! TO REDUCE THE RISK OF FIRE, ELECTRICAL SHOCK, OR INJURY TO
PERSONS OBSERVE THE FOLLOWING:
a) Use this unit only in the manner intended by the manufacturer. If you have any questions, please contact the
manufacturer at the address or telephone number listed in the warranty.
b) Before servicing or cleaning unit, switch power off at service panel and lock service panel and lock the service
disconnection means to prevent power from being switch 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.
WARNING – TO REDUCE THE RISK OF A 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.

Installation Instructions Revised 10/13/2015 Copyright (C) 2008 Proverbs 22:29 Page 2
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b) Always turn hood ON when cooking at high heat or when flambéing food (i.e. Crepes Suzette, Cherries Jubilee,
Peppercorn Beef Flambe’).
c) Clean ventilating fans frequently. Grease should not be allowed to accumulate on fan or filter.
d) Use proper pan size. Always use cookware appropriate for the size of the surface element.
WARNING! TO REDUCE THE RISK OF INJURY TO PERSONS IN THE EVENT OF A
RANGE TOP GREASE FIRE, OBSERVE THE FOLLOWING:
a) SMOTHER FLAMES with a close-fitting lid, cookie sheet, or metal tray, then turn off the burner. BE CAREFUL
TO PREVENT BURNS. If the flames do not go out immediately, EVACUATE AND CALL THE FIRE
DEPARTMENT.
b) NEVER PICK UP A FLAMING PAN—YOU MAY BE BURNED.
c) DO NOT USE WATER, including wet dishclothes 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.
2. The fire is small and contained in the area where it started.
3. The fire department is being called.
4. You can fight the fire with your back to an exit.
Recommendations:
1. Consult a licensed ventilation contractor or qualified technician for proper installation of exhaust ducting.
Locate the cooking area for minimum cross drafts-away from doors and windows, when possible.
2. Ducts must be of adequate size and duct runs should be as short as possible. Where turns are necessary,
keep turning radius as large and as smooth as possible.
3. The ducting must be air tight. Use a minimum of 2 sheet metal screws at every duct joint. Then, seal the duct
joints with high quality duct tape.
4. Do not use this unit with any solid-state speed control device.
5. This unit must be grounded.
INSTALLATION INSTRUCTIONS
WARNING – TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO
PERSONS, 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-rated construction codes and standards.
b) Sufficient air is needed for proper combustion and exhausting of gasses 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 wall or ceiling, do not damage electrical wiring and other hidden utilities.
d) Ducted fans must always be vented to the outdoors.
WARNING -- TO REDUCE THE RISK OF FIRE, USE ONLY METAL DUCTWORK.
CAUTION – To reduce the risk of fire and to properly exhaust air, be sure to duct air outside – Do not
vent exhaust air into spaces with in walls or ceilings or into attics, crawl spaces, or garages

Installation Instructions Revised 10/13/2015 Copyright (C) 2008 Proverbs 22:29 Page 3
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CONTENTS:
Part 1 - Planning the Installation Part 2 - Securing the Liner
Part 3 - Use & Care Part 4 - Electrical Connection (Give copy of these 2 pages to electrician.)
PART 1 Planning the Installation
The PMB series ventilation modules are designed for installation inside wood hood canopies. Proper installation of
the liner is directly related to the material from which the custom canopy is constructed. A qualified person must
complete the installation of this unit. Plan the installation so that all minimum clearances are met or exceeded.
Dimensions shown provide minimum clearances, unless otherwise specified. Important: You must provide
structural framing and tight backing in the areas in which you are securing the liner inside your custom canopy.
Failure to do so could distort and damage the liner and void the warranty.
Given that most installations are different, a back-draft damper is not provided with this unit. Always install
ventilation products with an approved wall or roof cap. Duct performance is improved by using round, smooth
metal duct work instead of rectangular. If multiple elbows must be used, ensure that there is a minimum of 24” of
straight duct between any two elbows. Avoid “S” or back to back configurations caused by adjacent elbows. Do
not rely on duct tape alone to seal duct joints. Use sheet metal screws as required to support the duct.
WARNING!
For maximum ventilation performance, the bottom of the hood or liner should be 30 - 36 inches (76.2 - 91.4
cm) above the cooking surface (minimum is 24”). This would typically result in the bottom of the hood
being 66 - 72 inches (167.6 - 182.9 cm) above the floor. These dimensions provide for safe and efficient
operation of the hood. Always observe local building codes.
PMB02
PMB03
PMB06

Installation Instructions Revised 10/13/2015 Copyright (C) 2008 Proverbs 22:29 Page 4
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Installing PMB series models in liner installed inside wood hoods:
First remove filter and then locate and unscrew four Phillips-head screws holding faceplate to blower box assembly.
Slowly lift faceplate over the light bulbs, pausing midway to carefully unplug the connector plug (coming from the
face-plate switch box) from blower box assembly connector. Set face-plate aside.
Locate and remove mini rectangular electrical box (held on by one Phillips-head screw) attached to bottom side of
the blower box (next to the blower unit itself and the start collar).
Next, locate mounting studs on liner and corresponding mounting holes in blower box assembly frame. Also locate
romex, pulling wires down and straight. Push blower box housing into opening in liner, simultaneously pulling romex
through hole in the bottom of the blower box. Continue lifting the unit until mounting studs penetrate blower box
assembly frame mounting holes. Screw nuts on opposite corners of frame until all four nuts are securing blower box
assembly to liner. Secure nuts tightly to avoid vibration between the assembly box and the liner.
Reattach connector on face plate to corresponding connector coming from the blower box assembly. Be sure
connector is completely engaged or PMB series ventilation module may not perform as designed. Slip face plate
back over light bulbs, secure all four screws, and snap filter back into place.
PART 2 Securing the Liner
MOUNTING THE LINER
NOTE: DRILLING THROUGH STAINLESS STEEL REQUIRES A TITANIUM BIT. BE CAREFUL NOT TO DRILL
THROUGH FILTER BRACKETS, ELECTRICAL COMPONENTS OR UL LABEL.
Because the Trade-Wind®Standard Series Liner was designed for various wood hood applications, no mounting
holes have been pre-drilled. This allows the liner to be attached in most any area of the canopy that has a wood
frame support, e.g., the back, sides or top. We recommend at least six equally spaced screws per liner—three
screws along the back (top or back side panel) and three screws on the front top, immediately next to the light bar
wall or behind the removable light bar. Where possible, the screw holes should be drilled into the top of the liner
(instead of the sides or back). This will help prevent distorting the liner walls in situations where the wood frame is
not properly sized to the liner. Models with internal motors should also have at least one screw centered and
securely in place on each end (side panel) of the liner because of the added weight.
Neatly measure and mark (left to right and top to bottom) and drill screw holes through the liner as required to
match the wood backing. It is easier to drill holes from the outside in, by setting the liner on its face (on cardboard)
and drilling from the back side. Secure the liner by driving screws (by others) tightly into the wood frame. Use
washers where necessary. When removing the filters, be careful not to scratch the liner by placing the filters,
screws, drill bits or drill on the liner’s face.
CONNECTING TO THE VENT PIPE
The PMB series ventilation modules come with a metal start collar. Attach the Start Collar to the duct with at least
three equally spaced screws. Also apply duct tape, preferably the metal type. Some installations, (where the
outside of this portion of the duct is not accessible) will require the metal tape be applied on the inside of the duct.
PART 3 Use and Care
WARNING!
Do NOT operate the blower / ventilator system without the filters in place, or with dirty, grease laden filters.

Installation Instructions Revised 10/13/2015 Copyright (C) 2008 Proverbs 22:29 Page 5
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OPERATING CONTROLS:
Always activate the ventilator when using cooking appliances. For best performance, turn on the blower a few
minutes before starting to cook to establish an airflow pattern within the room. To use the electronic touch control,
touch the button that corresponds to the desired speed. To turn off blower, touch the illuminated speed button
again or the illuminated blower off control button. The electronic light control when touched comes on high; touch
again for night light setting, touch again for light off.
ENERGY SAVING TIPS:
Eliminate air currents in the vicinity by shutting nearby windows and doors, turning off ceiling fans and adjusting the
adjacent heating and air conditioning outlets if necessary. Place your largest pans on the rear burners whenever
possible. Clean filters and grease laden surfaces often to improve efficiency. Always use lids on cookware to
retain heat and moisture. Minimize the amount of liquid used to cook food. Select cookware of proper size,
material and construction for the cooking task being performed.
CARE & CLEANING:
Proper cleaning is necessary to maintain performance and appearance, while also ensuring safe operation. The
frequency of cleaning should be according to the type and amount of cooking. Best results will be achieved by
cleaning soiled components as soon as possible. Filters must be cleaned regularly. Remove the filter(s) by
grasping the D ring on the filter front and pulling gently. Grasp the front of the filter to remove it. To reinstall the
filter, place the back edge of the filter into the back filter bracket. Lightly push the filter toward the back of the liner
while pressing the front side upwards into place.
The filters may be cleaned by hand washing in hot water using a mild detergent solution or by placing in an
automatic dishwasher. Dry the filters before reusing.
CAUTION: Most common scrubber type pads will scratch the liner. If a commercially available stainless steel
cleaner is used, it is important to read the labels for chlorine compounds. Chlorine is a corrosive substance. If
these compounds are present, rinse thoroughly and dry with a soft lint-free cloth. Follow polish manufacturer’s
instructions. Always wipe stainless steel surfaces with the grain. Never wipe across the grain. After cleaning,
reinstall the filters carefully.
HALOGEN LIGHT BULBS:
Liners are designed for Par 20 halogen lamps. They can be purchased at most home or grocery stores, e.g.,
Lowe’s, Home Depot, McCoy’s, Menards or Ace True Value.
PART 4 Electrical Connection
IMPORTANT: Copy this page to your electrical installer.
WARNING! Ensure that the power supply is disconnected before proceeding. Verify that the power supply
matches the ratings found on the appliance data label before proceeding. The complete appliance must be
properly grounded at all times when electrical power is applied. Do not ground the appliance with the neutral
(white) house supply wire. A separate ground wire must be utilized. Failure to complete electrical connections
properly may result in damaged or non-functional systems. Follow instructions carefully to ensure proper
installation.
It is the owner’s responsibility to ensure that a qualified person performs the electrical connection of this appliance.
The electrical installation, including minimum supply wire size, must comply with the National Electric Code
ANSI/NFPA 70-1990 (or latest revision) and local codes and ordinances. A copy of this standard may be obtained
from: National Fire Protection Association, 1 Batterymarch Park, Quincy, Massachusetts 02269-9101

Installation Instructions Revised 10/13/2015 Copyright (C) 2008 Proverbs 22:29 Page 6
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INSTRUCTIONS: A 15 to 20 amp electrical service is recommended for proper electrical supply. Before
determining, calculate amp ratings based on the product label found on the PMB series module. Always observe
local building codes. Always use a dedicated circuit. Line load is calculated by adding the amperage of the
halogen lights to the rated amperage of the ventilator.. If the ventilator is rated in watts rather than amps, divide the
watts by 120 and this will give you the amperage rating.
CAUTION: The neutral wire (usually white) for the ventilator must connect to the same neutral wire that
comes from the electrical panel to the liner. It is recommended to run a white neutral wire from the liner’s white
neutral wire along the same path as the red wire from the liner’s variable speed control to the ventilator.
Factory Installed Variable-Speed Wiring Details
Black
120 volt AC from electrical panel (usually black)
White
Neutral from electrical panel (white)
Green
Ground from electrical panel (usually green)
Wiring Diagram
PMB Series Models
Liner
House Electrical
Panel
Green
White (N)
120V Black (L)

Installation Instructions Revised 10/13/2015 Copyright (C) 2008 Proverbs 22:29 Page 7
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W A R R A N T Y
Kitchen Ventilation Products
What IS Covered
Trade-Wind®warrants its Trade-Wind®Kitchen Ventilation Products to the original user, to be free of
defects in materials and workmanship for three (3) years from the date of purchase.
Trade-Wind® at its option, will repair or replace the complete unit or any defective component without charge.
This warranty may be voided if any unauthorized service, alterations, or repairs are made to the product.
What is Not Covered
•Normal maintenance and service of any product that has been subject to misuse, negligence,
accident, or installation inconsistent with the recommended Trade-Wind® Installation Instructions
and Trade-Wind® Best Practices Guidelines.
•Product(s) used other than for normal in-home use or products used outside of the United States.
•Damage to the product caused by accident, fire, flood, or other acts of God.
•Service calls to educate the customer in the proper use and care of the product, change fuses, or to
reset the circuit breakers.
•Service calls to correct faulty installation, such as, performance issues relating to improperly sized
ducting or restrictive roof caps is not covered and will by default be charged back to the Homeowner.
Trade-Wind®disclaims and excludes any liability for implied warranties or for incidental or consequential
damages wherever permitted by law. There are no implied warranties of merchantability or fitness for a
particular use or purpose. This warranty gives you specific legal rights and you may also have other rights,
which vary from state to state.
For Service: If you need service on your Trade-Wind®Kitchen Ventilation or Exhaust Ventilators
contact our Customer Service at the Website, physical address, or phone number listed below.
Please provide the model number, part identification, and/or serial number along with details of the problem.
Proof of purchase may be required.
Warranty Revised 08/12/2015
Universal Metal Industries, Inc. has a policy of continuous improvements and reserves the right to modify (at any time and
without notice) any or all of its products, features, designs, components and specifications. For exact dimensions, see the
Installation Instructions included with each product.Some features may be slightly different than shown on product literature.
For more information, please contact your Trade-Wind®Representative
800 West Grant Street, Phoenix, AZ 85007
800 875-3654 Phone [phone] Fax
602 251-3654 Phone [phone] Fax
twphx.com trade-windonline.com umiphx.com

Installation Instructions Revised 10/13/2015 Copyright (C) 2008 Proverbs 22:29 Page 8
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Brands'
Best'Practices
'
Venting'Installation'Instructions'for'
Range'Hoods'and'Wood'Hood'Liners'
(All'Models)'
'
—Addendum(to(Installation(Instructions—
IMPORTANT:''Problems'caused'by'improper'installations'are'not'covered'by'the'manufacturer’s'warranty.
'''
IMPORTANT:''Undersized'and'improperly'installed'duct'pipe'and/or'other'ventilation'components'will'cause'
excessive'static'pressure'(air'resistance),'that'may'result'in'rattling,'vibration'and'air'buffeting'noises,'as'well'as'
inadequate'ventilation.'
'
1. Building'Codes'''-'''Kitchen'Hood'Ventilators'should'be'installed'by'qualified'technicians'familiar''
' ' ' ''''''''with'state'and'local'building'codes.'
'
2. Duct'Pipe'and'Fittings'(Elbows,'Transitions,'Roof'&'Wall'Caps)'
a. Use'round'or'rectangular'rigid'metal'duct'only.''Where'possible,'use'round'duct'as'it'creates'the'least'
amount'of'static'pressure.''DO'NOT'use'flex'duct.'
'
b. All'duct'sections'and'fittings'(EXCEPT'DAMPERS,'per'Section'4),'should'overlap'and'be'connected'with'
at'least'3'–'4'equally'spaced'screws'and'wrapped'tightly'with'2'–'3'layers'of'Aluminum'Foil'Metal'Duct'
Tape.''This'type'of'duct'tape'is'more'durable'than'traditional'cloth'duct'tape.''DO'NOT'use'butt'joints.'''
'
c. For'best'air'flow,'elbows'and'pipe'size'transition'fittings'should'not'be'directly'connected'to'one'
another.''Where'possible,'always'include'at'least'15'inches'of'straight'pipe'between'fittings.'
'
3. Duct'Pipe'and'Fitting'Sizes.''(See'Duct'Sizing'Chart'and'Area'Calculations'Section'for'more'detail)'
'
IMPORTANT:''DO'NOT'use'either'of'the'following'duct'pipe'sizes'or'fitting'sizes'for'any'kitchen'hood'
ventilator'installations:'
-''6”'round'duct'pipe'
-''3.25”'x'10”'rectangular'x'6”'round'transitions'
-''6”'x'7”'linear'transitions'
'
IMPORTANT:''No'portion'of'any'length'of'duct'pipe'or'fitting'should'be'smaller'than'the'discharge'port'of'the'
ventilator.''This'is'very'important'because'any'type'of'restriction'anywhere'in'the'ventilation'system'will'
cause'increased'static'pressure'(air'resistance),'that'may'result'in'rattling,'vibration'and'air'buffeting'noises,'
as'well'as'inadequate'ventilation.'
'
Example:''For'ventilator'models'with'3.25”'x'10”'discharge'ports,'no'part'of'the'roof'cap'or'wall'cap’s'air'path'
should'be'smaller'than'3.25”'x'10”'(32.5'square'inches)'or'7”'round'(38.5'square'inches).''See'Roof'Caps'and'
Wall'Caps'section'for'more'detail.'
'
Exception:''For'some'short'duct'runs'inside'walls'framed'with'2'x'4'studs,'it'is'a'common'industry'practice'to'
transition'a'7”'round'duct'to'a'3.25”'x'10”'rectangular'duct.''If'space'allows,'it'is'best'to'use'a'3.25”'x'14”'
rectangular'duct'with'a'3.25”'x'14”'x'7”'transition.'
'
'

Installation Instructions Revised 10/13/2015 Copyright (C) 2008 Proverbs 22:29 Page 9
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Duct'Pipe'and'Fitting'Sizes'(Continued)'
Duct'Runs'–'Length'
a. Configure'the'ventilation'duct'run'to'be'as'short'and'as'direct'to'the'outside'as'possible.''Minimize'
the'number'of'elbows'and'transition'fittings'used.''Complex'or'long'runs'should'be'reviewed'by'a'
qualified'installer.'
'
b. No'portion'of'the'ducting'should'be'run'so'that'the'exhaust'air'flows'downward.''Since'exhaust'heat'
rises,'forcing'the'air'to'flow'downward'will'cause'increased'static'pressure.''As'previously'mentioned,'
improperly'installed'duct'pipe'will'cause'excessive'static'pressure'(air'resistance),'that'may'result'in'
rattling,'vibration'and'air'buffeting'noises,'as'well'as'inadequate'ventilation.'
'
c. Duct'runs'for'390CFM'ventilator'models'should'not'exceed'20'linear'feet'with'two'90-degree'elbows'
(or'four'45-degree'elbows),'a'damper'and'a'roof'or'wall'cap.''Longer'runs'or'additional'elbows'will'
result'in'decreased'ventilation'performance.'''Each'90-degree'elbow'is'the'equivalent'of'8'linear'feet'
of'duct'pipe;'each'45-degree'elbow'is'equivalent'to'4'linear'feet'of'duct'pipe.'
'
d. Always'run'ventilator'ducts'to'the'outdoors.''DO'NOT'terminate'a'duct'into'an'attic,'basement,'
garage,'crawl'space'under'a'house,'a'chimney,'other'ducting'or'an'enclosed'room.'
4. Dampers'
IMPORTANT:''DO'NOT'USE'SCREWS'TO'ATTACH'ANY'TYPE'OF'DAMPER'AS'THE'SCREWS'MAY'BLOCK'THE'
DAMPER'BLADES.'
'
IMPORTANT:''DO'NOT'USE'MORE'THAN'ONE'DAMPER'IN'THE'VENTILATION'SYSTEM.''NOTE:''Many'styles'of'
roof'caps'and'wall'caps'have'built-in'dampers.''See'Roof'Caps'and'Wall'Caps'section'for'more'detail.'
'
Always'use'carefully'crafted,'tightly'wrapped'Aluminum'Foil'Metal'Duct'Tape'on'all'connections'and'physically'
view'and'test'the'damper'blades'to'make'certain'they'are'opening'and'closing'correctly.''Make'sure'that'the'
damper'blades'do'not'touch'the'duct'walls'and'that'there'is'no'debris'blocking'the'free'movement'of'the'
damper'mechanism.''Common'things'to'look'for'include'screws'protruding'into'the'blade’s'path,'overspray'of'
paint,'plaster'and'insulation.''If'using'rectangular'duct,'be'sure'that'all'four'sides'of'the'duct'are'on'the'
outside'of'the'damper’s'start'collar'or'frame.'
'
390CFM'Models'
390CFM'models'have'a'7"'round'Ducting'and'Damper.'''
DO'NOT'USE'SCREWS'TO'ATTACH'THE'DUCT'TO'THE'DAMPER'FRAME'AS'THE'SCREWS'MAY'BLOCK'
THE'DAMPER'BLADE.''ALWAYS'use'Aluminum'Foil'Metal'Duct'Tape'on'all'connections'and'physically'
view'the'damper'blade'to'make'certain'it'is'operating'correctly.''On'ventilator'installations'designed'
to'recirculate'the'exhaust'air'back'into'the'kitchen,'be'sure'to'remove'the'aluminum'damper'blade'
before'attaching'the'duct'to'the'damper'frame.'
'
Damper'in'Roof'Cap'or'Wall'Cap'
In'ventilation'systems'utilizing'a'roof'cap'or'wall'cap'with'a'built-in'damper,'do'not'install'an'
additional'in-line'damper.'Two'dampers'are'unnecessary'and'will'cause'increased'static'pressure'(air'
resistance),'that'may'result'in'rattling,'vibration'and'air'buffeting'noises,'as'well'as'inadequate'
ventilation.'
'
In-line'Damper'(for'ventilation'systems'utilizing'a'roof'cap'or'wall'cap'without'a'built-in'damper)'
In'cold'weather'areas,'installing'an'“in-line”'damper'may'be'the'preferred'type'of'installation.''This'is'
because'in-line'dampers'installed'just'above'the'perimeter'of'the'heated'space'(the'ceiling)'will'
reduce'the'amount'of'cold'air'traveling'down'the'duct'into'the'heated'space'and'into'the'kitchen'
through'the'ventilator.'
'
'

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In-line'dampers'must'be'installed'so'that'the'exhaust'air'flow'will'open'the'butterfly'blades.'''
For'horizontal'duct'runs,'the'in-line'damper'must'be'installed'so'that'the'hinge'between'the'two'
butterfly'blades'is'vertical—the'hinge'pin'must'point'up'and'down.''Otherwise,'because'of'gravity,'
the'damper’s'blades'will'not'close'and'the'damper'will'not'prevent'backdrafts.'''
'
For'vertical'duct'runs,'the'in-line'damper’s'hinge'will'be'horizontal'(sideways),'which'is'correct'for'
vertical'duct'runs.''Gravity'will'help'close'the'damper'blades'after'each'use.''
'
For'upward'slanted'duct'runs,'the'in-line'damper’s'hinge'must'point'to'the'top'and'bottom'sides'of'
the'duct.''In'his'position,'gravity'will'help'close'the'damper'blades'after'each'use.''Otherwise,'because'
of'gravity,'the'damper’s'blades'will'not'close'and'the'damper'will'not'prevent'backdrafts.'''
'
5. Roof'Caps'and'Wall'Caps'
The'roof'cap'or'wall'cap'is'the'termination'point'of'the'venting'system'that'allows'the'exhaust'air'to'exit'to'
the'outdoors.''All'sections'of'this'fitting'must'have'an'equal'or'greater'air'path'area'than'the'ventilator’s'
discharge'port.'''If'any'section'of'the'roof'cap'or'wall'cap'is'smaller'than'the'ventilator’s'discharge'port,'the'
entire'ventilation'system'will'lose'efficiency'and'the'restriction'will'cause'increased'static'pressure.'
'
IMPORTANT:''Even'though'the'intake'side'of'the'roof'cap'or'wall'cap'may'be'properly'sized,'roof'caps'or'wall'
caps'with'built-in'dampers'must'be'made'so'that'when'the'damper'is'fully'open,'the'actual'open'area'of'the'
final'air'path'is'equal'to'or'greater'than'the'discharge'port'of'the'ventilator.''Any'undersized'portion'of'a'roof'
cap'or'wall'cap'will'cause'excessive'static'pressure'that'may'result'in'rattling,'vibration'and'air'buffeting'
noises,'as'well'as'inadequate'ventilation.'''
'
Roof'caps'and'wall'caps'must'have'an'integral'bird'screen.'
'
6. Attaching'Duct'to'House'Framework'
The'ventilation'system'should'be'attached'to'the'framework'in'such'a'manner'that'the'weight'of'the'duct'and'
fittings'is'supported'with'no'stress'on'the'duct'joints,'fittings'or'on'the'ventilator.''All'ducting'should'be'
attached'so'as'to'avoid'any'possible'duct'vibration'from'being'transferred'to'the'house’s'framework.'
'
7. Hoods'with'Optional'Top'or'Back'Venting'
Several'range'hood'models'provide'the'option'of'venting'the'exhaust'air'out'the'top'or'back'side'of'the'range'
hood.''On'some'models,'this'is'accomplished'by'redirecting'the'motor/blower'unit'to'exhaust'through'the'
top,'back'or'the'recirculation'position.''On'other'models,'the'duct'pipe'is'attached'directly'to'the'start'collar'
which'can'be'attached'to'the'top'side'or'back'side'of'the'hood.''For'more'details'on'this'aspect'of'the'
installation,'see'the'detailed'Installation'Instructions'packaged'with'each'unit.'
'
IMPORTANT:''On'models'with'multiple'venting'ports,'the'open'holes/slots'around'the'unused'venting'port(s)'
MUST'BE'SEALED'with'Aluminum'Foil'Metal'Duct'Tape.''Otherwise,'exhaust'air'and'smoke'will'be'vented'
through'the'unused'Vent'Knockout’s'holes/slots.''On'models'featuring'the'recirculation'option,'if'this'option'
is'NOT'used,'the'vent'port'inside'the'hood'should'also'be'taped'over'with'Aluminum'Foil'Metal'Duct'Tape.''
UNUSED'PORTS'SHOULD'BE'TAPED'BEFORE'THE'RANGE'HOOD'IS'MOUNTED'TO'THE'WALL'OR'CABINET.'
'
8. Liners'Using'Optional'Vent'Transition'Accessory'
On'installations'using'the'optional'vent'transition'accessory'to'transition'to'10”'round'duct,'all'bottom'edges'
of'the'transition'should'be'taped'to'the'liner'with'2'–'3'layers'of'Aluminum'Foil'Metal'Duct'Tape.'
'
'

Installation Instructions Revised 10/13/2015 Copyright (C) 2008 Proverbs 22:29 Page 11
11
9. 'Duct'Sizing'Chart'and'Area'Calculations' '
'
Ventilator'Discharge'Port'
Types'&'Sizes'
Duct'Type'Required'
Duct'Size'
(in'Square'Inches)'
Minimum'Discharge'Size'
of'Roofcap'or'Wallcap'
Outside'Opening'
''
'
'
'
6”'Diameter,'Round'
28.3”'
6”'Round'Metal'Duct'
28.3”'
28.3”'
7”'Diameter,'Round'
38.5”'
7”'Round'Metal'Duct'
38.5”'
38.5”'
8”'Diameter,'Round'
50.25”'
8”'Round'Metal'Duct'or'
6”'x'9”'Rectangular'Metal'Duct'
50.25”'
54”'
50.25”''''''''''''''''''''''
54”'
10”'Diameter,'Round'
78.5”'
10”'Round'Metal'Duct'
78.5”'
78.5”'
3.25”'x'10”'Rectangular'
32.5”'
3.25”'x'10”'Rectangular'Metal'Duct'
32.5”'
32.5”'
'
'
Calculating'Square'Inches'of'Various'Duct'Sizes'&'Types' '
ROUND'DUCT'
'
RECTANGULAR'DUCT'
Radius'
x'
Radius'
x'
3.1416'
='
Area'(Sq.'Inches)'
'
Width'
x'
Depth'
='
Area'(Sq.'Inches)'
'
x'
'
x'
'
='
'
'
'
''x'
'
''='
'
The'“radius”'is'one-half'the'diameter'of'a'round'duct,'
e.g.,'½'of'a'10”'round'duct'is'5”.''3.1416'is'“Pi”,'the'
“constant”'used'when'calculating'the'area'of'a'circle.'
'
'
'
'
'