OverviewVent Sets / Utility Sets, Blowers and Material Handlers are installed in numerous commercial and industrial systems. These systems range from general ventilation to complex process ventilation. Additional requirements can include seismic or high wind certification.
These specialized applications and systems can require the addition of accessories. Some accessories are only available for specific units and arrangements.
This document provides an overview of the available accessories. Refer to product guides, submittals and IOM’s for more information.
Introduction and Information
VENT/UTILITY SET, BLOWER ACCESSORIES
Page 2
AMCA Spark Resistant Construction When selecting a product with spark resistant construction, Compute-A-Fan will pre-select the needed accessories and materials in order to comply with AMCA 99 Spark Resistant Construction Guidelines. The following are generalized requirements for each level:
AMCA Type A Construction* (Most Stringent)All parts of the fan in contact with the air or gas being handled shall be made of a nonferrous material.
AMCA Type B ConstructionThe fan shall have a nonferrous impeller and nonferrous ring about the opening through which the shaft passes.
AMCA Type C Construction (Least Stringent)The fan shall be so constructed that a shift of the impeller or shaft will not permit two ferrous parts of the fan to rub or strike.
Note: No bearings, drive components, or electrical devices shall be placed in the air or gas stream unless they are constructed or enclosed in such a manner that failure of that component cannot ignite the surrounding gas stream.
Associated ProductsArrangement 1, 2, 4, 8, 9 & 10 CA/CF, CPA*, CPA-A*, CPS, CPS-A, CPV, Material Handlers *Standard construction for CPA & CPA-A
Notes• Reduce Temperature Range
5.5ºF for every degree ambient temperature is above 100ºF
• Fan speed limits are reduced for elevated airstream temperatures. See below
VENT/UTILITY SET, BLOWER ACCESSORIES
High Temperature Construction
Temperature Range
Fan Arrangement Construction Requirements
-20ºF to 80ºF All • Standard Construction*
181ºF to 230ºF 1,2,8,9,10 • Standard Construction*
3 • High Temperature Bearings
231ºF to 300ºF1,2,8,9,10 • High Temperature Paint*
3 • High Temperature Bearings• High Temperature Paint
301ºF to 500ºF 1,2,8,9,10
• High Temperature Paint• Special Louvered Weather Cover
(when required)• Shaft Cooler• Steel Wheel & Steel Housing• Motor Heat Shield (Arr, 2, 9, 10 only)
501ºF to 800ºF 1,2,8,9
• High Temp Paint• Special Louvered Weather Cover
(when required)• Shaft Cooler• Steel Wheel & Steel Housing• Motor Heat Shield (Arr, 2, 9, only)
800ºF+ 1, 8 • Consult factory for details
High Temperature Construction Requirements
Material Airstream Temp
Speed Limit
Factor
Carbon Steel
70 1.00
200 0.98
300 0.96
400 0.94
500 0.91
600 0.87
700 0.81
800 0.75
Aluminum 70 1.00
200 0.93
300 0.79*Material Handlers may require Heavy Duty construction base on the point of operation Page 3
VENT/UTILITY SET, BLOWER ACCESSORIES
Applications Construction and Certification
UL Restaurant ExhaustUnits are available with UL Restaurant Exhaust Listing for either 300ºF or 500ºF
In addition to the temperature construction requirements shown on page 3, units with UL Restaurant Exhaust Listing require the following accessories.• Access Door (Page 12)• Drain (Page 12)
Optional Accessories available:• UL Punched Flanged Inlet (Page 15)• UL Punched Discharge Flange (Page 16)• UL Punched Companion Flanges (Pages 15 &
16)Associated ProductsArrangement 1, 2, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPA*, CPA-A*, CPS, CPS-A, CPV**300º Listing only
UL Smoke ControlUnit selected with UL Power Ventilators for Smoke Control Systems require:• Motor Heat Shield (Page 21) • Steel Wheel
Associated ProductsArrangement 1, 8, 9 & 10 CA, CA-4, CF; CF-4; Single Wide; CPS, CPS-A
Hurricane / High Wind • Models tested per Miami-Dade County’s
Testing Application Standards:• TAS-201• TAS-202• TAS-203
• Products have the following approvals:• NOA (Miami-Dade Notice of
Acceptance)• Florida Building Commission
More detailed information is available in the High Wind and Hurricane Fans Brochure
Associated ProductsCPFB, CPS, CPS-A, CPV
Seismic (OSHPD Pre-Approval) • Models are tested in accordance with the
criteria specified in ICC-ES AC156. • Tests results were accepted by the California
Office of Statewide Health Planning and Development.
• All units are approved with:• Steel housed units • Isolation rails.
More detailed information is available in the Vibration Isolation and Seismic Certification Brochures
Associated ProductsArrangement 9 CA, CF Single Wide (Sizes 120-540); CPS, CPS-A, CPV
AMCA Class UpgradeIn Compute-A-Fan units can be selected with an upgraded AMCA Class*. Considerations are: • Higher maximum RPM• Larger shaft and bearings• At higher classes, arrangements may be
limited
Associated ProductsCA, CA-4, CF, CF-4, Single and Double Wide; CPS, CPS-A *Material Handler can be upgraded from Standard to Heavy Duty Construction
Page 4
• Spherical roller bearing are typically arranged in minimum two rows.
• Lower speed, higher horsepower application
Features and Benefits• Standard for Cook products• Set screws attach the bearing to the fan shaft
via fastener points embedding into the fan shaft material
• Cook’s Standard Bearing Life L-10 40,000 hours
• Cast housing resists flexing during installation and under operational loads
• Re-lubrication extends the life of the bearing
Bearing Information
VENT/UTILITY SET, BLOWER ACCESSORIES
CONCENTRIC LOCKING SET SCREW
Associated ProductsArrangement 1, 2, 3, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers
Features and Benefits• Concentric locking applies
clamp forces 360º around the fan shaft
• Cook’s Standard Bearing Life L-10 40,000 hours
• Cast housing • Re-lubrication bearing
Page 5
Features and Benefits• Split housing allows replacement of bearing
insert only.• Available for both ball and roller bearings.• Includes internal concentric locking collar• Bearing Life in excess of L-10 40,000 hours• Cast housing resists flexing during installation
and under operational loads• Re-lubrication extends the life of the bearing
SPLIT PILLOW BLOCK BALL BEARING ROLLER BEARING
• Typically single roll for ball bearing set into a race.
• Higher speed application
Associated ProductsArrangement 1, 2, 3, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers
Associated ProductsArrangement 1, 2, 3, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; Arrangement CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers
What is bearing life and what does it mean?Bearing life is a statistical calculation based on a percentage of failures that occurred in laboratory conditions. In theselaboratory conditions, controlled loads, specific speeds and proper lubrication are applied to sets of bearings. These bearings are run and timed until fatigue failure occurred. All bearings require lubrication and re-lubrication during their life until. • L-10 life means that 10% of a given set of bearings at a calculated speed and load will fail. • L-50 life is a statistical estimate of when 50% of a given set of bearings at a calculated speed and load will fail. • L-10 hours x 5 = L-50 hours.• Cook standard design is for a minimum of L-10, 40,000 or L-50, 200,000 hours at maximum catalog RPM. • At a specific point of operation (RPM / Motor Hp) the actual bearing life may greatly exceed this advertised life.
Bearing Information
VENT/UTILITY SET, BLOWER ACCESSORIES
Time Period 24 hr / Day 24 hr / Day 16 hr / Day 16 hr / Day 12 hr / Day 8 hr / DayExample Days / Week 5 Days / Week 7 Days / Week 5 Days / Week 5 Days / Week 5 Days / WeekL-10 40,000 Hours 4.6 Years 6.4 Years 6.9 Years 9.6 Years 12.8 Years 19.2 YearsL-50 200,000 Hours 22.8 Years 32 Years 34 Years 48 Years 64 Years 96 Years
Page 6
EXTENDED BEARING LIFEFeatures and Benefits• Based on application requirements,
extended bearing life can provide the necessary design life for a system
• Bearing type and size are factory calculated to meet the life at maximum catalog RPM and motor horsepower.L-10
200K
HIGH TEMPERATURE BEARINGS /HIGH TEMPERATURE GREASEFeatures and Benefits• High temperature bearings
• Bearing operation temperature 230° and above• Bearings have greater internal clearance to allow for thermal expansion• Bearings are preloaded by the bearing manufacturer with high temperature
grease . High temperature grease resists thermal breakdown• High temperature grease (only)
• Used in standard bearings • For temperature above 180° but below the minimum temperature for high
temperature bearings
Associated ProductsArrangement 1, 2, 3, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers
L-1080K
Associated ProductsArrangement 1, 2, 3, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPS, CPS-A, Material Handlers
VENT/UTILITY SET, BLOWER ACCESSORIES
Shaft and Bearings
Features and Benefits• Cast aluminum construction• Provided as temperature
protection for bearings• Also known as Heat Slinger• See Page 3 for required use
SHAFT COOLER
RUB RING
SHAFT SEAL
Page 7
Features and Benefits• Provide quick and convenient way to
lubricate bearings while the fan is operating
• No need to shut fan down• More convenient access• Available in plastic or optional copper
EXTENDED LUBE LINES
Features and Benefits• Prevents shaft and wheel from
contacting fan housing• Aluminum construction• See Page 2 for AMCA Spark
Resistant Construction
Features and Benefits• Reduces air leakage around fan
shaft in high discharge pressure applications
• Constructed of aluminum with standard gasket material Aramid fiber with NBR binder.
• Optional gasket material, PTFE commonly known by its brand name, Teflon
Associated ProductsArrangement 1, 2, 3, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers
Associated ProductsArrangement 1, 2, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPA, CPA-A CPS, CPS-A, CPV, Material Handlers
Associated ProductsArrangement 1, 2, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPFB, CPS, CPS-A, CPV, Material Handlers
Associated ProductsArrangement 1, 2, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPFB, CPS, CPS-A, CPV, Material Handlers
Rub Ring & Shaft Seal
Extended Lube Lines
Shaft Cooler
VENT/UTILITY SET, BLOWER ACCESSORIES
Shaft and Belts
STAINLESS STEEL SHAFT
Page 8
Stainless Steel Shaft
RT400015-20 HP
Features and Benefits• Maintains constant tension on the drive
belt• Belts run 15-20° F cooler increasing
belt life approximately 50%• Reduces start up and maintenance
costs• Simplifies and speeds belt replacement
• Requires no skill and no tools
AUTOMATIC BELT TENSIONER
Associated ProductsArrangement 10, CA, CF, Single Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV; Arrangement 10 Material Handlers
RT30005-10 HP
RT10001/6-3 HP
Features and Benefits• Available in 304 or 316 alloy• Provides a higher level of
corrosion resistance compared to standard shaft coating
Associated ProductsArrangement 1, 2, 3, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA*, CPA-A*, CPFB, CPS, CPS-A, CPV, Material Handlers*Standard construction for CPA & CPA-A
Features and Benefits• Factory supplied replacement belts• Reduces down-time sourcing
replacement• Belts are the same type and size as
originally specified and as installed on the unit
SPARE BELTS
Associated ProductsArrangement 1, 2, 3, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers
Automatic Belt Tensioner
Spare Belts
VENT/UTILITY SET, BLOWER ACCESSORIES
Inlet, Outlet and Belt Guards
Page 9
INLET GUARDFeatures and Benefits• Provides a degree of protection against personnel access• Shields belts from weather, UV light and other factors that
may deteriorate the belts • Available in steel and aluminum construction• Optional High Temperature construction
Belt Guard
High Temperature construction
Associated ProductsArrangement 10, CA, CF, Single Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV; Arrangement 10 Material Handlers
Features and Benefits• Provides protection for personnel and prevents intake
of debris in non-ducted applications• Available in three styles
• Spiral Inlet, material plated steel• Aluminum Inlet Safety Screen• Impact (Hurricane)*
• Factory installed*Required for NOA units installed in non-ducted applications
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide*; Arrangement CPA, CPA-A, CPF, CPS, CPS-A, CPV*Double wide units are shipped with 2
Features and Benefits• Provides protection for personnel and prevents debris from
entering the discharge of the unit in non-ducted applications• Welded construction and factory installed • Available in three styles
• Lorenized expanded steel• Aluminum expanded metal• Impact (Hurricane)*
*Required for NOA units installed in non-ducted applications
OUTLET GUARD
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; Arrangement CPA, CPA-A, CPF, CPS, CPS-A, CPV
BELT GUARD
VENT/UTILITY SET, BLOWER ACCESSORIES
OSHA Belt Guard and Weather Cover
Page 10
OSHA BELT GUARD / WEATHER COVERFeatures and Benefits• Provides a degree of protection against
personnel access that meet OSHA requirements• Shields belts from weather, UV light and other
factors that may deteriorate the belts • Optional available
• High Temperature construction (See page 3 for details)
• With Access Door• High Temperature with Access Door• Impact (Hurricane) construction**Required to meet TAS-201, see page 4
OSHA Belt Guard / Weather Cover
High Temperature construction
Associated ProductsArrangement 10, CA, CF, Single Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV; Arrangement 10 Material Handlers
Impact construction
OSHA Belt Guard / Weather Cover
with Access Door
VENT/UTILITY SET, BLOWER ACCESSORIES
OSHA Belt Guard and Weather Cover
Page 11
BELT GUARD
Features and Benefits• Provides a degree of
protection against personnel access
• Shields the belt from weather, UV light and other facots that may deteriorate the belts
• Split design allows for access without removal of supports
• Available in steel or aluminum construction
• Solid or expanded metal* designs
*Standard for arrangement 3
Belt Guard
Motor Cover
Shaft-Bearing Guard
High Temperature Construction
Associated ProductsArrangement 1, 2, 3, & 9 CA, CA-4, CF, CF-4 Single Wide & Double Wide; Arrangement 1 & 9 Material Handlers
SHAFT-BEARING GUARD
Features and Benefits• Provides a degree of
protection against personnel access
• When installed with Belt Guard provide OHSA level of protection
• Available in steel or aluminum construction
• Optional High Temperature Construction available
Associated ProductsArrangement 1 & 9 CA, CA-4, CF, CF-4 Single Wide; Arrangement 1 & 9 Material Handlers
Features and Benefits• Provides additional
protection for motor• When outdoor motor cover
is required for ODP motors• Cover is vented to dissipate
heat• Available in steel or
aluminum construction• Optional High Temperature
Construction available
MOTOR COVER
Associated ProductsArrangement 1*, 3*, & 9 CA, CA-4, CF, CF-4 Single Wide & Double Wide; Arrangement 1* & 9 Material Handlers*Motor Cover designed for use with Cook isolation base
VENT/UTILITY SET, BLOWER ACCESSORIES
Cleaning and Collection
Page 12
ACCESS DOOR
Features and Benefits• Provides access for cleaning and inspection of
wheel• Bolted or Hinged styles• Constructed from the same material as fan
housing• Gasketed to minimize leakage
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPF, CPS, CPS-A, CPV, Material Handler
Features and Benefits• Provides for collection of grease• Removable for cleaning• Maximum capacity 1 liter per NFPA 96
code requirements.• Welded aluminum construction• Internal water baffle • Shipped loose for field mounting
GREASE TROUGH – HANGING
Associated ProductsArrangement 1, 2, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPA, CPA-A, CPS, CPS-A, CPV
GREASE TERMINATOR
Features and Benefits• Provides for collection of grease• Canister made from high impact plastic.• Canister is clear for monitoring grease amounts• Fill fibers formulated to absorbed grease while
repelling water• Shipped loose for field mounting to housing
drainAssociated ProductsArrangement 1, 2, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPA, CPA-A, CPS, CPS-A, CPV
Drain
Features and Benefits• Provides for a threaded connection for
field installed piping• ¾ inch NPT pipe coupling fully welded
at lowest point on the unit
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPF, CPS, CPS-A, CPV, Material Handler
DRAIN
VENT/UTILITY SET, BLOWER ACCESSORIES
Split Housing
Page 13
SPLIT HOUSING
Features and Benefits• Allows for the unit to be disassembled in
the field to aid in the transport and installation in an existing building
• Fan housing is split in the factory. • All splits include bolted flanges for ease of
assemble.• Flanges are welded to the housing• Standard split is horizontal, just above the
fan shaft• Vertical, scroll housing, 4-way splits and
bolt-on pedestals are available, consult factory for details.
• Concentric locking bearings are recommended with split housing option. See page 5
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA*, CPA-A*, CPFB*, CPS*, CPS-A*, CPV*, Material Handler*Housing will no longer be rotatable with split housing
Horizontal Split Vertical Split
4-way Split Scroll Split
VENT/UTILITY SET, BLOWER ACCESSORIES
Wheel Options
Page 14
MATERIAL HANDLER WHEEL TYPESMaterial Handlers have different wheel to address the material the fan is conveying. Like the unit, wheel are available in Standard or Heavy-Duty construction
Features and Benefits• MH – Open Type
• Light material such as dust or other small granular material
• MHB – Backplate Type• String or fibrous material,
like paper shredding, threads or other cloth fibers
• MHR – Reinforced Open Type• Like the MH this wheel is
design for heavier dust and larger particles
• MHA – Air Handling Type• Clean air, high pressure
application
Associated ProductsMaterial Handler
MH MHB
MHR MHA
ALUMINUM WHEEL
Features and Benefits• Available for either flat blade or airfoil wheel
design• Lighter wheel without any reduction in
strength• Maximum temperature 300°F• Used in some corrosion resistant applications.
See Compute-A-Fan Tools / Corrosion Resistance Guide for more information
• Required for AMCA spark resistance construction. See page 2 for details
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA*, CPA-A*, CPS, CPS-A, CPV, Material Handler***Standard construction for CPA, & CPA-A**Available for MHA wheel only
COATINGS• Lorenized• Epoxy powder • The list goes on!• What is right for your
applications? • More detailed information
is available in the Coating Brochure
VENT/UTILITY SET, BLOWER ACCESSORIES
Inlet Connections
Page 15
FLANGED INLET
Features and Benefits• Provides flanged, bolted
connection for the attachment of ductwork
• Constructed of structural angle and welded to minimum 10-gauge tube
• Bolted to inlet at the factory*• Available in steel or aluminum• Standard pre-punched holes
spaced to matches inlet cone bolt location
• Optional pre-punched hole pattern of 4 inch maximum on-center spacing, to meet NFPA 96 requirement for UL Restaurant Exhaust Listing installation
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers**Flanged Inlet on Material Handlers are welded directly to the inlet collar of the fan
INLET COMPANION FLANGE
Features and Benefits• Provides an exact mating part for
the connection of ductwork• Used in conjunction with Flanged
Inlet• Constructed with the same
structural angle as the Flanged Inlet
• Ship loose for attaching to ductwork
• Available in steel or aluminum• Pre-punched holes spaced to
matches either the standard or optional hole pattern of the Flanged Inlet
Flanged Inlet
Inlet Companion Flange
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers
VENT/UTILITY SET, BLOWER ACCESSORIES
Outlet Connections
Page 16
DISCHARGE FLANGE
Features and Benefits• Provides method for connecting
discharge duct to the unit• The welded structural angle is
constructed of the same material as the housing
• Vent Sets / Utility Sets• Standard feature • Bolted to housing
• Blowers• Standard feature • Welded to housing
• Material Handler • Optional • Welded to housing
• Pre-punched are available for either standard pattern or 4 inch maximum on-center spacing, to meet NFPA 96 requirement for UL Restaurant Exhaust Listing installation
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers
DISCHARGE COMPANION FLANGE
Features and Benefits• Provides an exact mating
part for the connection of ductwork
• Used in conjunction with Discharge Flange
• Constructed with the same structural angle as the Discharge Flange
• Ship loose for attaching to ductwork
• Available in steel or aluminum
• With or without pre-punched holes
• Pre-punched flanges are spaced to match either the standard or optional hole pattern of the Discharge Flange
Discharge Flange
Discharge Companion Flange
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers
VENT/UTILITY SET, BLOWER ACCESSORIES
Flex Connector and Stainless-Steel Construction
Page 17
Feature and Benefits• Reduces vibration transmission from
the fan to the duct work• Neoprene coated fiberglass fabric
mechanically fastened and sealed • Discharge Flex Duct ConnectorS are
provided with a flanged connection
FLEX DUCT CONNECTOR
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV
VIBRATION ISOLATION• Rails versus Bases?• Rubber-in-Shear versus
Spring?• What type of Springs? • More detailed information is
available in the Vibration Isolation Brochure
STAINLESS STEEL CONSTRUCTIONFeature and Benefits• For specific corrosion resistant application• Available in 304 and 316 alloys• Option for entire unit or airstream only
stainless-steel construction• Refer to Compute-A-Fan Tools / Corrosion
Resistance Guide for more information
Associated ProductsCPS, CPS-A
0.032 Aluminum
0.032 Aluminum
0.032 Aluminum
D
W
H
0.032 Aluminum
VENT/UTILITY SET, BLOWER ACCESSORIES
Inlet Box and Curb Cap
Page 18
Feature and Benefits• Inlet Box plenum is design to have less than 1% impact on performance• Compact footprint that requires only one roof penetration versus
traditional duct drop and equipment rails • Removable gasketed plenum access panel with quick release latches• Available with NOA (Hurricane) certification
Associated ProductsCPA, CPA-A, CPS, CPS-A, CPV
CURB CAP AND INLET BOX
Quick release latches for easy access
Low loss inlet box
Curb cap
Roof curb
Conveniently located handles for installation and removal
VENT/UTILITY SET, BLOWER ACCESSORIES
Stack Extension
Page 19
STACK EXTENSIONFeatures and Benefits• 10-foot discharge height• Design to withstand 125 MPH continuous wind load
without guy wires• Lifting lugs assist in installation• Aluminum construction • Drain in housing automatically included with stack
extension
Associated ProductsCPS, CPS-A, CPV, (Sizes 60-365)
Vari-Flow Motors & Controls• Vari-Flow motors and controls are ideal when
simple, demand-based control is required.• Energy savings and controllability have never been
easier• Includes pressure, temperature, humidity, CO2, VOC
and 2-speed control• SimpliDrive – Cook’s pre-installed, pre-wired, pre-
programmed VFD is compatible with the entire line of Vari-Flow controls
• More detailed information is available on the Vari-Flow product pages and in the Vari-Flow Product Guide
*Stack Extension for sizes 60-270 are shipped in two sections
VENT/UTILITY SET, BLOWER ACCESSORIES
Airflow Measurement and Monitoring
Page 20
Inlet Piezometric Ring
Feature and Benefits• Non-invasive airflow
measurement device that does not impact airflow performance
• High pressure and low-pressure ports are piped to the fan housing exterior
• With the connection of a differential pressure measurement device an airflow measure can be achieved
INLET PIEZOMETRIC RING
Feature and Benefits• Displays, monitors and
communicates airflow using the piezometric ring
• All flow coefficients are pre-programmed into the unit. Simply set the Cook fan model and size via the pushbutton display
• Display either CFM or LPS• Outputs 0-10 signal which is
proportional to the airflow for connection to BMS/BAS
• Ships assembled in a NEMA 4, 4X, 12, 13 enclosure
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPS, CPS-A, CPV
Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPS, CPS-A, CPV
CFMS- COOK FLOW MONITOR
VENT/UTILITY SET, BLOWER ACCESSORIES
Motor Accessories
Page 21
MOTOR SLIDE BASE
MOTOR HEAT SHIELD
Feature and Benefits• Provides method for tensioning belts• Slide Base to be securely anchored to
concrete slab or isolation base• Steel construction with plated steel
tension bolts• Available for motor frames 56 to
449T
Associated ProductsArrangement 1, 3, & 9* CA, CA-4, CF, CF-4, Single Wide & Double Wide; Arrangement 1 & 9* Material Handler*Provided as a standard feature for arrangement 9 units
Feature and Benefits• Shields motor from heat radiating
from fan housing• Constructed of foil backed fiberglass
or aluminum plate• See page 3 for High Temperature
Construction for detailsAssociated ProductsArrangement 1, 2, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers
DAMPERS & SHUTTERS• Cook offers a wide variety of gravity
backdraft, motorized backdraft, control style and low leakage dampers
• More detailed information is available in the Damper & Shutter Accessories Product Guide
Buy American• Loren Cook Company products
are manufactured in the USA• Cook manufacturing locations
• Springfield, Missouri*• Coffeyville, Kansas*Corporate Headquarters
NEMA Enclosures Types*
NEMA 1
NEMA 1 (Lockable)
NEMA 1 Heavy Duty
NEMA 3
NEMA 4
NEMA 7 / 9
Service Switches
VENT/UTILITY SET, BLOWER ACCESSORIES
NEMA 1Indoor use only. Provides protection against personnel access and against ingress of foreign objects like falling dirt.
NEMA 3 For either indoor or outdoor use. Provides protection against personnel access and against ingress of water (rain, sleet, and snow), windblown dust and will not be damaged by external formation of ice.
NEMA 3R For either indoor or outdoor use. Provides protection against personnel access and against ingress of water (rain, sleet, snow), and will not be damaged by external formation of ice. Windblown dust protect is not part of the rating.
NEMA 4 For either indoor or outdoor use. Provides protection against personnel access and against ingress of water (rain, sleet, snow, splashing water, and hose directed water), windblown dust and will not be damaged by external formation of ice.
NEMA 4X For either indoor or outdoor use. Provides protection against personnel access and against ingress of water (rain, sleet, snow, splashing water, and hose directed water), windblown dust and will not be damaged by external formation of ice. Also provide an additional level of protection against corrosion.
NEMA 7ǂ
Enclosures constructed for indoor hazardous classified locations as Class I, Division 1, Groups A, B, C, or D.
NEMA 9ǂ
Enclosures constructed for indoor hazardous classified locations as Class II, Division 1, Groups E, F, or G.
Additional features and terms:Lockable – Provided with means of locking the device to prevent from being energized.Heavy duty – As known as ‘knife blade’. Visible bars or blades that operate to close the switch circuit.
*Adapted from National Electrical Manufactures Association, NEMA Standards Publication 205 (Current)ǂ NEMA enclosure rating types can be combined to achieve the required rating for the environment. Example NEMA 3R, 7/9 for outdoor hazardous locations. Page 22