LO-PRO: Low Profile High Pressure Roof Exhaust Ventilator

  • Lo-Pro
  • Standard Construction Features
  •  Certifications Logo
LO-PRO

LO-PRO

Standard Construction Features

Standard Construction Features

AMCA Air Cert. logo

AMCA Air Certified

Cook’s low profile roof exhaust ventilator provides maximum performance and durability in a wide variety of applications from general ventilaton to restaurant hood exhaust. The Lo-Pro’s one-of-a-kind double scroll design produces higher airflow volumes and static pressures than the conventional roof exhaust ventilator.

  • Heavy gauge galvanized steel exterior is designed for maximum weather protection.
  • Standard hinged top access panel on sizes 100 through 300, and removable top access panel on sizes 330 through 540.
  • Hinged wheel access door on sizes 100 through 300, and removable wheel panel on sizes 300 through 540 allow the wheel and fan to be cleaned without compromising the fan to ductwork seal.
  • Wheels are centrifugal type featuring non-overloading, backward-inclined blades and a tapered inlet shroud.
  • Available in 5 direct drive sizes and eighteen belt drive sizes. Capacities range from 650 to 55,000 CFM, with static pressure from 0 to 3 inches.

 

Related Documents

See the Downloads tab for specifications, submittals and FanDrafter files

See also LC: Low Contour Power Roof Ventilators

  • LPD

  • LPB

  • Downloads

AC

LOREN COOK COMPANY certifies that the LPD 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.

Type LPD is furnished standard with UL 705 listing and cUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

LPD 

Low Profile Centrifugal Exhaust Ventilator
Roof Mounted/Direct Drive

Description: Fan shall be a low profile, roof mounted, direct driven, upblast exhaust ventilator.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. 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 of bolted and welded construction utilizing corrosion resistant fasteners. The aluminum base shall have a one piece inlet spinning and continuously welded curb cap corners for maximum leak protection. The top cap shall have quick release latches to provide access into the motor compartment. The motor shall be mounted on a minimum 14 gauge steel power assembly. These components shall be enclosed in a weather-tight compartment, separated from the exhaust airstream. Diverters shall be provided to discharge air vertically. Fan wheel and motor shall be mounted to a hinged access door for inspection and cleaning. Unit shall bear an engraved aluminum nameplate. Nameplate shall indicate design CFM and static pressure. Unit shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheel shall be centrifugal backward inclined, constructed of 100% aluminum, including a precision machined cast aluminum hub. An aerodynamic aluminum inlet cone shall be provided for maximum performance and efficiency. Wheel hub shall be keyed and securely attached to the fan shaft. 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 LPD as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

ACEd dimension drawing

Size A B C D ID E ID F G H I J T Sq. Shipping Weight Roof Opening Sq.*
100 22-1/16 29-7/8 13-7/8 6-11/16 6-25/32 52-3/16 2 1-1/32 8-19/32 1-9/32 20 110 15-1/2
120 25-11/16 32-3/8 15-3/8 8 8-5/32 58-13/16 2 27/32 7-29/32 15/32 24 130 19-1/2
135 28-7/16 34-1/2 16-3/8 9 9-3/16 64-1/8 2 2-7/32 8-15/16 1-9/16 24 146 19-1/2
150 31-1/8 36-11/16 17-3/8 10 10-7/32 69-3/8 2 3-9/16 9-15/16 2-3/4 24 162 19-1/2
165 33-13/16 39 18-3/8 11 11-7/32 74-11/16 2 4-29/32 10-15/16 4-1/16 24 183 19-1/2
*Roof opening size for curbs supplied by LOREN COOK COMPANY only.
AC

LOREN COOK COMPANY certifies that the LPB 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.

Type LPB is furnished standard with UL 705 listing and cUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

Type LPB is furnished standard with UL 762 and cUL 762 listings (Power Ventilator for Restaurant Exhaust Appliances/YZHW) when furnished with factory supplied motor and air diverter.

LPB 

Low Profile Centrifugal Exhaust Ventilator
Roof Mounted/Belt Drive

Description: Fan shall be a low profile, roof mounted, belt driven, centrifugal exhaust ventilator.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). For restaurant applications, fan shall be listed by Underwriters Laboratories (UL/cUL 762) for US and Canada. Fan shall bear the AMCA Certified Ratings Seal for Sound and Air Performance.

Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The aluminum base shall have a one piece inlet spinning and continuously welded curb cap corners for maximum leak protection. The top cap shall have quick release latches to provide access into the motor compartment. The motor, bearings and drives shall be mounted on a minimum 14 gauge steel power assembly. These components shall be enclosed in a weather-tight compartment, separated from the exhaust air stream. Diverters shall be provided to discharge air vertically. Fan wheel shall be mounted to an access door for inspection and cleaning. Access door for sizes 100 to 300 shall be hinged, sizes above 300 shall be removable. Unit shall bear an engraved aluminum nameplate. Nameplate shall indicate design CFM, static pressure, and maximum fan RPM. Unit shall be shipped in ISTA Certified Transit Tested Packaging.

Wheel: Wheel shall be centrifugal backward inclined, constructed of 100% aluminum, including a precision machined cast aluminum hub. Wheel hub shall be keyed and securely attached to the fan shaft. Wheel inlet shall overlap an aerodynamic aluminum inlet cone to provide maximum performance and efficiency. 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 individually 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 LPB as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

ACEd dimension drawing

Size A B C D ID E ID F G H I J T Sq. Shipping Weight Roof Opening Sq.*
100 22-1/16 29-7/8 13-7/8 16-11/16 6-25/32 52-3/16 2 1-1/32 8-19/32 1-9/32 20 110 15-1/2
120 25-11/16 32-3/8 15-3/8 8 8-5/32 58-13/16 2 27/32 7-29/32 15/32 24 130 19-1/2
135 28-7/16 34-1/2 16-3/8 9 9-3/16 64-1/8 2 2-7/32 8-15/16 1-9/16 24 146 19-1/2
150 31-1/8 36-11/16 17-3/8 10 10-7/32 69-3/8 2 3-9/16 9-15/16 2-3/4 24 162 19-1/2
165 33-13/16 39 18-3/8 11 11-7/32 74-11/16 2 4-29/32 10-15/16 4-1/16 24 183 19-1/2
180 36-1/2 40-13/16 20-3/8 12 12-1/4 79-9/16 2 3-1/4 8-7/8 1-15/16 30 224 25-1/2
195 39-1/4 49 21-3/8 13 13-1/4 90-3/4 2 4-5/8 16-3/16 2-13/16 30 276 25-1/2
210 42 50-15/16 23-3/8 14 14-9/32 95-3/4 2 6 17-1/4 3-11/16 30 302 25-1/2
225 44-5/8 52-11/16 25-1/4 15 15-5/16 100-9/16 3 7-5/16 18-5/32 4-17/32 30 378 25-1/2
245 48-5/16 55-3/16 26-1/2 16 16-1/4 105-15/16 3 6-5/32 16-17/32 2-21/32 36 475 31-1/2
270 52-13/16 58-1/4 28 17-15/16 17-31/32 115-3/16 3 8-13/32 18-5/32 4-3/32 36 530 31-1/2
300 58-3/16 63-1/8 31-1/4 19-27/32 19-11/16 125-3/16 3 8-3/32 18-11/32 2-25/32 42 740 37-1/2
330 63-5/8 66-11/16 32-1/4 21-3/4 21-13/32 132-7/8 3 10-13/16 20-9/32 4-13/32 42 810 37-1/2
365 69-15/16 71-1/16 34-1/4 24 23-7/16 143-3/8 3 10-31/32 19-5/8 3-7/16 48 1040 43-1/2
402 76-3/4 75-11/16 36-3/8 26-13/32 25-9/16 154-3/8 3 14-3/8 22-5/32 5-17/32 48 1187 43-1/2
445 84-7/16 83-5/8 40 29-1/8 28 169-5/8 3 12-7/32 21-23/32 1-29/32 60 1455 55-1/2
490 92-9/16 91-1/4 42-1/2 32 30-9/16 184-15/16 3 16-9/32 26-13/16 4-7/16 60 1675 55-1/2
540 101-9/16 97-3/8 52-1/2 29-13/16 39-1/2 217-7/8 3 17-25/32 27-1/8 4-1/4 66 2205 61-1/2
*Roof opening size for curbs supplied by LOREN COOK COMPANY only.

Catalog

Manual

Specifications

Submittals

FanDrafter files

Revit

See the download page