CV: Inline and Roof Mounted Fans

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Standard Construction Features

Standard Construction Features

Standard Construction Features

Standard Construction Features

 Certifications Logo

Certifications, vary by model

LOREN COOK COMPANY’s Centri-Vane® and Centri-Vane® Stretch are constructed of aluminum and designed for straight-through air flow. Performance ranges from 50 to 31,200 CFM with static pressures to 6” w.g. The Centri-Vane® belt drive is offered in 9 sizes from 12 to 36 and is available in duct mounted inline and roof mounted supply, exhaust and upblast configurations. The Centri-Vane® direct drive is offered in 7 sizes from 8 to 20 in duct mounted inline configuration.

Specially designed mixed-flow wheel provides unique performance with stable operation from free air to shutoff.

  • True airfoil blades provide non-overloading horsepower characteristics.
  • All aluminum construction reduces unit weight and associated installation costs.
  • Adjustable mounting brackets permit mounting in any desired position.
  • Compact straight-through design saves valuable floor space compared to a conventional centrifugal blower.
  • Straightening vanes insure linear movement of air at the fan discharge providing higher efficiency and lower overall noise levels.
Related Documents

See the Downloads tab for specifications, submittals and FanDrafter files

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GI

LOREN COOK COMPANY certifies that the CVD shown herein is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program.

Model CVD is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor..

CVD

Centri-Vane®
All Aluminum
Mixed-Flow Fan
Direct Drive

Description: Fan shall be a spun aluminum, duct mounted, direct driven, mixed-flow fan.

Certifications: Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA Certified Ratings Seal for Sound and Air Performance.

Construction: The fan shall be bolted and welded construction utilizing corrosion resistant fasteners. The spun aluminum housing shall be constructed of minimum .100 thick marine alloy aluminum with inlet and outlet flanges. Straightening vanes shall be utilized for uniform airflow. The adjustable mounting brackets shall be constructed of minimum .125 thick aluminum with extruded rubber isolation between bracket and fan housing. Unit shall bear an engraved aluminum nameplate and shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheel shall be a non-overloading design utilizing airfoil blades for maximum efficiency. The aluminum airfoil blades shall be welded to a spun aluminum dome. The dome shall be bolted to an aluminum hub assembly. The hub shall be keyed and locked to the fan shaft utilizing two setscrews. Wheel shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be NEMA design B with a minimum of class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Product: Fan shall be model CVD as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

dimension drawing
Size A B C D E F G Wheel Diameter Thickness of Alum. Approx.
Ship.
Wt. - lbs.
8 8 13-1/4 13-7/16 7 1-5/16 11-1/4 10-1/4 10-1/4 0.1 35
10 10 15 16-3/16 8-11/16 13 12-1/4 12-15/16 0.125 65
12 12 17-1/8 19-1/4 9-15/16 15-1/8 14-1/8 15-9/16 82
14 14 19-1/8 22 11-7/16 17-1/8 16-1/4 18-1/4 93
16 16 21-9/16 24-7/8 12-11/16 19-9/16 18-1/4 20-15/16 120
18 18 24-1/2 27-3/4 14 22-1/2 20-3/8 23-9/16 166
20 20 26-3/8 30-1/2 15-3/4 24-3/8 22-1/2 26-1/4 206

LOREN COOK COMPANY certifies that the CVB shown herein is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program.

Model CVB is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor..

CVB

Centri-Vane®
All Aluminum
Mixed-Flow Fan
Direct Drive

Description: Fan shall be a spun aluminum, duct mounted, belt driven, mixed-flow fan.

Certifications: Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA Certified Ratings Seal for Sound and Air Performance.

Construction: The fan shall be bolted and welded construction utilizing corrosion resistant fasteners. The spun aluminum housing shall be constructed of minimum .125 thick marine alloy aluminum with inlet and outlet flanges. Straightening vanes shall be utilized for uniform airflow. Extended lube lines shall be furnished for lubrication of fan bearings. Aluminum adjustable motor mounting plate shall utilize threaded studs for positive belt tensioning. The adjustable mounting brackets shall be constructed of minimum .125 thick aluminum with extruded rubber isolation between bracket and fan housing. Unit shall bear an engraved aluminum nameplate and shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheel shall be a non-overloading design utilizing airfoil blades for maximum efficiency. The aluminum airfoil blades shall be welded to a spun aluminum dome. The dome shall be bolted to an aluminum hub assembly. The hub shall be keyed and locked to the fan shaft utilizing two setscrews. Wheel shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be NEMA Design B with Class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.
Bearings: Bearings shall be designed and tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron housing selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be model CVB as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

dimension drawing
Size A B C D E F
Max
G H Wheel Diameter Maximum Motor Frame Thickness of Alum. Approx. Ship.
Wt. - lbs.
12 12 17-1/8 19-1/8 9-15/16 1-5/16 11-1/4 14-1/8 15-1/8 15-9/16 182T 0.125 68
14 14 19-1/8 22 11-7/16 16-1/4 17-1/8 18-1/4 81
16 16 21-9/16 24-7/8 12-11/16 18-1/4 19-9/16 20-15/16 184T 93
18 18 24-1/2 27-3/4 14 20-3/8 22-1/2 23-9/16 175
20 20 26-3/8 30-1/2 15-3/4 13-1/4 22-1/2 24-3/8 26-1/4 213T 204
24 24 31-1/4 36-1/2 18-5/8 1-9/16 26-3/4 29-1/4 31-9/16 215T 279
28 28 36 42 21-1/2 15-1/2 30-3/4 34 36-7/8 381
32 32 40-7/8 48 24-7/16 35-3/16 38-7/8 42-3/16 495
36 36 44-1/4 53-3/8 26-3/4 39-3/8 42-1/4 47-1/2 617
TR

Model CV-S is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

Model CV-S is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

CV-S

Centri-Vane® Stretch
All Aluminum
Mixed-Flow Fan
Belt Drive

Description: Fan shall be a spun aluminum, duct mounted, belt driven mixed-flow fan.

Certifications: Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA Certified Ratings Seal for Air Performance.

Construction: The fan shall be bolted and welded construction utilizing corrosion resistant fasteners. The spun aluminum housing shall be constructed of minimum .125 thick marine alloy aluminum with inlet and outlet flanges. Straightening vanes shall be utilized for uniform airflow. Extended lube lines shall be furnished for lubrication of fan bearings. Aluminum adjustable motor mounting plate shall utilize threaded studs for positive belt tensioning. The adjustable mounting brackets shall be constructed of minimum .100 thick aluminum. Unit shall bear an engraved aluminum nameplate and shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheel shall be a non-overloading design utilizing airfoil blades for maximum efficiency. The aluminum airfoil blades shall be welded to a spun aluminum dome. The dome shall be bolted to an aluminum hub assembly. The hub shall be keyed and securely attached to the fan shaft utilizing two setscrews. Wheel shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be NEMA Design B with Class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure. Bearings: Bearings shall be designed and tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron housing selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be model CV-S as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

dimension drawing

Size A B C D E F G H J L M N O Wheel Diameter Max. Mtr. Frame Approx. Ship.
Wt. - lbs.
12 32-7/8 21-7/16 20-1/4 10-3/4 10-23/32 6-3/4 13-1/4 3-5/8 9/16 1 14-5/8 12 9 15-9/16 182T 95
14 36 24-3/16 23 12-1/8 12-3/32 8-1/4 14-3/8 4-1/8 16-5/8 14 18-1/4 184T 114
16 39-9/16 27-9/16 26-1/8 13-13/16 13-25/32 10 14-1/2 18-5/8 16 20-15/16 130
18 43-5/8 30-7/16 29 15-1/4 15-7/32 11-1/2 15-5/8 3-7/8 20-5/8 18 10-1/2 23-9/16 213T 245
20 46-5/8 33-3/16 31-3/4 16-5/8 16-11/32 13 16-3/4 22-5/8 20 26-1/4 285
24 53-3/4 40 37-3/4 19-1/2 20 17 19 4-1/4 11/16 1-3/16 27-1/8 24 31-9/16 215T 390
28 60-3/4 46 43-1/2 22-1/2 23 20 21 4-1/8 1-11/16 31-1/8 28 13 36-7/8 254T 533
32 67-7/8 51 49-3/8 25-1/2 25-1/2 23 23-1/2 4-3/8 35-1/8 32 42-3/16 256T 693
36 73-1/2 57 54-15/16 28-1/4 28-1/2 26 25-3/4 4-5/8 1-15/16 39-1/8 36 47-1/2 863
TR

Model UCV is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

UCV

Centri-Vane®
All Aluminum
Roof Mounted
Upblast Mixed-Flow Fan
Belt Drive

Description: Fan shall be a spun aluminum, belt driven, upblast mixed-flow fan.

Certifications: Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705).

Construction: The fan shall be bolted and welded construction utilizing corrosion resistant fasteners. The spun aluminum housing shall be constructed of minimum .125 thick marine alloy aluminum. Curb cap shall have continuously welded corners for maximum leak protection. Straightening vanes shall be utilized for uniform airflow. Extended lube lines shall be furnished for lubrication of fan bearings. Aluminum adjustable motor mounting plate shall utilize threaded studs for positive belt tensioning. Fan shall have hinged butterfly discharge dampers of aluminum or steel construction with a rain gutter to prevent rain infiltration. The damper assembly shall be protected by a continuously welded aluminum windband of minimum .064 thick aluminum. Unit shall bear an engraved aluminum nameplate and shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheel shall be a non-overloading design utilizing airfoil blades for maximum efficiency. The aluminum airfoil blades shall be welded to a spun aluminum dome. The dome shall be bolted to an aluminum hub assembly. The hub shall be keyed and locked to the fan shaft utilizing two setscrews. Wheel shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be NEMA Design B with Class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be designed and tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron housing selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be model UCV as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

dimension drawing

Size A B C D E F G T Shaft Diameter Wheel Diameter Material Thickness housing/base Approx. Ship. Wt. - lbs.
12 25-1/8 9 17-1/8 19-1/8 15 16 2 20 1 15-9/16 .100/.100 98
14 29-1/8 10 19-1/8 22 16 18 24 18-1/4 .100/.125 121
16 31-9/16 21-9/16 24-7/8 17 21 20-15/16 143
18 36-1/2 12 24-1/2 27-3/4 19 23 28 23-9/16 208
20 38-1/2 26-1/2 30-1/2 25 26-1/4 274
24 45-3/8 14 31-3/8 36-1/2 21 29 3 32 1-3/16 31-9/16 369
28 52 16 36 42 29 33 36 1-11/16 36-7/8 491
32 58-7/8 18 40-7/8 48 30 37 42 42-3/16 .125/.125 625
36 64 20 44 53-3/8 32 41 48 1-15/16 47-1/2 767
TR

Model CVR and CVR-S are furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

CVR

Centri-Vane®
All Aluminum
Roof Mounted
Mixed-Flow Fan
Exhaust or Supply
Belt Drive

Description: Fan shall be a spun aluminum, hooded, roof mounted, belt driven, mixed-flow exhaust (or supply) fan.

Certifications: Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705).

Construction: The fan shall be bolted and welded construction utilizing corrosion resistant fasteners. The spun aluminum housing shall be constructed of minimum .125 thick marine alloy aluminum with inlet and outlet flanges. The spun aluminum top cap shall be constructed of minimum .064 thick marine alloy aluminum, and the aluminum base shall have continuously welded curb cap corners for maximum leak protection. Straightening vanes shall be utilized for uniform airflow. Extended lube lines shall be furnished for lubrication of fan bearings. Aluminum adjustable motor mounting plate shall utilize threaded studs for positive belt tensioning. An aluminum weatherproof motor cover shall be standard. Unit shall bear an engraved aluminum nameplate and shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheel shall be a non-overloading design utilizing airfoil blades for maximum efficiency. The aluminum airfoil blades shall be continuously welded to a spun aluminum dome. The dome shall be bolted to a cast or heavy gauge aluminum hub assembly. The hub shall be keyed and secured to the fan shaft with two set screws. Wheel shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be NEMA Design B with Class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be designed and tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron housing selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be model CVR and CVR-S as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

dimension drawing

Size A B C D E F G T Shaft Diameter Wheel Diameter Material Thickness housing/base Approx. Ship. Wt. - lbs.
12 22-1/8 5 17-1/8 19-1/8 15 27-15/16 2 20 1 15-9/16 .100/.100 98
14 24-1/8 19-1/8 22 16 24 18-1/4 .100/.125 121
16 26-9/16 21-9/16 24-7/8 17 20-15/16 143
18 29-1/2 24-1/2 27-3/4 19 28 23-9/16 208
20 33-1/4 6-3/4 26-1/2 30-1/2 36 26-1/4 274
24 38-1/8 31-3/8 36-1/2 21 3 32 1-3/16 31-9/16 369
28 44 8 36 42 29 42-1/8 36 1-11/16 36-7/8 491
32 57-7/8 17 40-7/8 48 30 52 42 42-3/16 .125/.125 625
36 61-1/2 17-1/2 44 53-3/8 32 62 48 1-15/16 47-1/2 767
Drives through 5 H.P. are all variable pitch.