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© 2018 - Best Purging Systems Corporation

Page 12 of 14 BPS YZ102 IOM-R1.0

Reference Information

These publications will help in the installation of the 

Enclosure Pressurization Unit. They can be found at your 

local library or purchased directly from the publisher. NOTE: 

The publication editions shown below are the most current 

at time of print. The most current edition of any publication 

listed below supersedes any printed edition date shown.

National Electrical Code (NEC) 

-ANSI/NFPA 70

 

 

2017 edition

Standard for Purged And Pressurized

Enclosures for Electrical Equipment         -ANSI/NFPA 496

 

 

 

 

 

        2017 edition

Recommended Practice for the Classification of Flammable 

Liquids,  Gasses  or  Vapors  and  of  Hazardous  (Classified) 

Locations  for  Electrical  Installations  in  Chemical  Process 

Areas.

 

NFPA 497 

 

2017 edition

ANSI: American National Standards Institute

 

11 West Street, 13th floor

 

New York, NY 10036 

(Tel) 212-642-4900 (Fax) 212-302-1286

NFPA: National Fire Protection Association 

Batterymarch Park 

P.O. Box 9101 

Quincy, MA 02269-9901 

(Tel) 800-344-3555 (Fax) 617-984-7057

Reference Publications

Professional Organizations

Содержание YZ102

Страница 1: ...ual BPS YZ102 IOM R1 0 9 18 Copyright 2018 Best Purging Systems Corporation All Rights Reserved Model YZ102 CI W or B V With Pressure Switch shown w Mounting Flange Model YZ102 CI W or B H With Pressure Switch shown w Mounting Flange Model YZ102 CI L U Less Pressure Switch shown w Mounting Flange ...

Страница 2: ...NOT intended for dilution applications Please consult factory for more information A copy of this manual must be read and retained by the operator of this unit User s agent s are responsible for transferring this manual to the user prior to installation and start up This unit must be installed and operated per this manual The Authority Having Jurisdiction should be advised before installation of t...

Страница 3: ...fying Your Unit Major Components List Filter Regulator Enclosure Pressure Valve Purge Valve Purge Press Indicator Enclosure Press Indicator Optional Pressure Loss Alarm Enclosure Warning Label EWL 1 General Information All electrical connections of the protected enclosure and purge unit must be performed by trained and knowledgeable personnel In addition all connections must be installed in accord...

Страница 4: ...e 5 Multiple Protected Enclosures must be purged in series and should be connected from the smallest to the largest enclosure 6 Enclosure Supply connections between multiple enclosures must be at least the diameter of the Purge vent exhaust 3 4 1 Protective Gas Supply Header Purge Unit Unit Supply 1 4 Tubing Protected Enclosure Purge Vent Model PV 2 Enclosure Supply 1 4 Tubing Enclosure Reference ...

Страница 5: ...rol Valve Venturi Orifice Model YZ102 CI L U Universal Mount Less Pressure Switch Rear View Model YZ102 CI W or B V Vertical Mount With Pressure Switch Rear View Typical Pneumatic Flow Diagram Denotes Customer Supplied Tubing Required Purge Vent Enclosure Pressure Gauge Optional EXP Pressure Switch Purge Injection Pressure Gauge Enclosure Warning Label Protected Enclosure Enclosure Supply Enclosur...

Страница 6: ...nt Purge Vent 2 5 6 5 Model YZ102 CI W or B Side View C L 4 3 5 Model YZ102 CI W or B Mounting Flange YZ102 CI L U Side View C L 4 1 75 12 Universal Mounting Flange Model YZ102 CI W or B V Front View Model YZ102 CI L U Front View 12 11 5 11 5 12 0 25 Typ 8 0 5 6 6 12 11 5 15 75 0 5 16 25 8 125 0 25 Typ 6 15 75 8 125 11 11 5 0 5 16 25 0 25 Typ 6 0 625 12 4 0 3 375 0 25 Typ 8 11 375 10 3125 1 6875 0...

Страница 7: ...nting flange dimensions and unit layout 5 Based on Enclosure Connection Requirements on page 4 drill and ream a 29 64 hole in protected enclosure install 1 4 Enclosure Supply Bulkhead fitting NOTE Protected Enclosure Supply should be installed at extreme opposite corner from part PV 2 Purge Vent and 8 from the Enclosure Reference Connection 6 Next drill and ream a 29 64 hole in protected enclosure...

Страница 8: ...um 60 psi reading on Purge Injection Pressure Gauge adjust regulator if required 8 Close Purge Control Valve fully The Enclosure Pressure Indicator should return to a Safe 0 25 w c reading 9 Calculate total protected enclosure volume when empty Determine Purge Time required 5 minutes minimum Required Exchange Time Enclosure Volume 4 Volumes 1 minute per 1 0 cf 5 Volumes 1 minute per 0 8 cf 10 Mark...

Страница 9: ...o off scale to the high side this is normal 6 Confirm a Min 60 psi on Purge Injection Pressure Gauge 7 Allow unit to purge protected enclosure for the required time marked on the Unit Start Up Instructions 5 minutes minimum Required Exchange Time Enclosure Volume 4 Volumes 1 minute per 1 0 cf 5 Volumes 1 minute per 0 8 cf 8 Upon completion of the required purge time close the Purge Control Valve f...

Страница 10: ... to Twenty Four 24 Months after date of shipment Regardless of registration the Commencement Date for either warranty period shall be the date of BEST Factory shipment or under prior special written agreement at time of Product purchase no greater than Ninety 90 Days after the BEST Factory shipment date WARRANTY EXTENSIONS An extended warranty shall extend the effective warranty based on the terms...

Страница 11: ... repair shipping damage or any other reason Please note that shipping damage must be claimed promptly with the carrier and is the responsibility of the recipient To procure an RMA number please contact Best Purging Systems Customer Service at 1 844 PURGE IT 787 4348 A Best Purging Systems Customer Service Associate will then work with you to resolve any problems with the Unit if at all possible an...

Страница 12: ...onal Electrical Code NEC ANSI NFPA 70 2017 edition Standard for Purged And Pressurized Enclosures for Electrical Equipment ANSI NFPA 496 2017 edition Recommended Practice for the Classification of Flammable Liquids Gasses or Vapors and of Hazardous Classified Locations for Electrical Installations in Chemical Process Areas NFPA 497 2017 edition ANSI American National Standards Institute 11 West St...

Страница 13: ...BPS YZ102 IOM R1 0 Page 13 of 14 2018 Best Purging Systems Corporation Maintenance Service Notes ...

Страница 14: ...____ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Unit Identification Information Date of Installation __________________...

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