C22.2 No. 187-15

Electrostatic air cleaners

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  C22.2 No. 187-15

  February 2015

  
  

  Title: Electrostatic air cleaners

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C22.2 No. 187-15

Electrostatic air cleaners

Published in February 2015 by CSA Group A not-for-profit private sector organization

178 Rexdale Boulevard, Toronto, Ontario, Canada M9W 1R3

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ISBN 978-1-77139-615-8

© 2015 CSA Group

All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher.

Contents

Technical Committee on Consumer and Commercial Products 4

Subcommittee on Electrostatic Air Cleaners 6

Preface 7

1. Scope 8

   
   

2. Reference publications 9

   
   

3. Definitions 11

   
   

4. General requirements 12

   
   

5. Construction 12

   1. General 12

   2. Frame and enclosure 14

      1. Sheet metal enclosures for live parts 14

      2. Corrosion protection 14

      3. Cast-metal enclosures 14

      4. Duct-mounted air cleaners 14

      5. Properties of nonmetallic enclosures and supports 14

      6. Openings in enclosures 15

   3. Mechanical assembly 16

   4. Supply connections 16

      1. Permanently-connected equipment 16

      2. Cord-connected equipment 17

      3. Strain relief 17

   5. Bushings and insulators 17

   6. Terminal parts 18

   7. Current-carrying parts 18

   8. Internal wiring 19

   9. Separation of circuits 19

   10. Capacitors 20

   11. Electromagnetic interference (EMI) filters 20

   12. Switches, lampholders, and interlocks 20

   13. Motors 20

   14. High-voltage power supplies 21

   15. Spacings 22

       1. Low-voltage circuits 22

       2. High-voltage circuits 24

   16. Insulating material 24

   17. Maximum output current 24

   18. Grounding and bonding 24

   19. Access to high-voltage bare live parts 24

   20. Fan blade guards 25

   21. Washing 26

6. Tests 26

   1. Rating 26

   2. Temperature — Normal 26

   3. Temperature — Abnormal 26

      1. Cheesecloth 26

      2. Single-fault condition 27

      3. Requirements 27

      4. Test duration 27

   4. Maximum output voltage and current 27

   5. Dielectric withstand 27

   6. Voltage decay 28

   7. Interlock 29

   8. Leakage current 29

   9. Strain relief 30

   10. High-voltage insulating materials 30

   11. Strength of enclosures and grills 31

   12. Access to moving parts 31

   13. Flame test for nonmetallic enclosures of live parts 31

   14. Moisture-absorption test 31

       
       

7. Ozone 32

   1. General 32

   2. Requirements 32

   3. Markings 33

   4. Tests 33

      1. General 33

      2. Normal conditions 33

      3. Endurance test 34

      4. Additional requirements 35

   5. Electrostatic in duct duct-type air cleaners for residential use 35

      1. General requirements 35

      2. Duct test fixture 35

1. Test equipment accuracy requirements 38

2. Test method 39

3. Reporting requirements 40

4. Labelling 40

1. UVC in duct-type air purifiers for residential use 41

   1. UVC in duct-type 41

   2. Test duct fixture 41

   3. Test requirements 41

   4. Back ground ozone measurement 42

   5. Reporting requirements 42

   6. Labelling 42

2. Commercial ozone generator designed exclusively for use in temporarily unoccupied spaces 43

   1. General 43

   2. Commercial-use ozone generators 43

   3. Instruction manual 43

   4. Additional markings 43

   5. Installation and operating instructions 44

   6. Special precautions 44

   7. Requirements 44

   8. Ozone detector test 45

8 Marking 46

Annex A (informative) — The time weighted average (TWA) sample calculation 57

Annex B (informative) — Check list for ozone treatment technician operating the ozone generator for temporary unoccupied space 58

Technical Committee on Consumer and Commercial Products

A. Milne 21st Olympiad Sales, Burlington, Ontario Category: General Interest

Chair

D. Mascarenhas Brampton, Ontario

Category: General Interest

Vice-Chair

D.P. Badry Government of Yukon, Whitehorse, Yukon

Category: Regulatory Authority

W.J. Burr Burr and Associates,

Campbell River, British Columbia

Category: General Interest

R. Cleary The Home Depot Canada Inc., Toronto, Ontario

Associate

J.E. Evans Evans Regulatory Certification Consulting, Jasper, Ontario

Associate

W. Hansen Trane Ingersoll Rand,

La Crosse, Wisconsin, USA

Category: Producer Interest

R.L. Hicks Mississauga, Ontario

Category: General Interest

F. LaRiccia Health Canada The Risk Assessment Bureau, Ottawa, Ontario

Category: Regulatory Authority

S. Lawrence Cisco Systems Canada Co., Scarborough, Ontario Category: Producer Interest

G. Lundy IBM Canada Limited, Markham, Ontario Category: Producer Interest

1. Martel Electro-Federation Canada, Toronto, Ontario

   Category: Producer Interest

   
   

2. Michaud Thomas & Betts Limited, Dorval, Québec

   Category: Producer Interest

   
   

3. Olechna Electrical Safety Authority, Mississauga, Ontario

Category: Regulatory Authority

B.L. Rebel Association of Home Appliance Manufacturers Canada,

Ottawa, Ontario

Associate

C.S. Seaby Burlington, Ontario Associate

M. Staples City of Victoria,

Victoria, British Columbia

Category: Regulatory Authority

M.K. Timmings Studio Four Technical Lighting Services,

Oakville, Ontario

Category: General Interest

A.Z. Tsisserev Applied Engineering Solutions Ltd., Vancouver, British Columbia Category: General Interest

L. Letea CSA Group,

Mississauga, Ontario

Project Manager

Subcommittee on Electrostatic Air Cleaners

G. Nilsson NRC-Construction Portfolio, Ottawa, Ontario

Chair

R. Larocque Ozocan Corporation, Scarborough, Ontario

Vice-Chair

A. Bal Toronto, Ontario

C. Choy The Lung Association, Toronto, Ontario

R. Crowe Electro-Air Canada / Five Seasons Comfort Limited, Concord, Ontario

E. Fernando CSA Group, Toronto, Ontario

A.J. Heffler Ottawa, Ontario

R. Lee Emerson Network Power Co., Ltd., Shenzhen, Guangdong, China

B. Terlson Honeywell Inc.,

Golden Valley, Minnesota, USA

W. Hendricks CSA Group, Mississauga, Ontario

Project Manager

Preface

This is the fourth edition of CSA C22.2 No. 187, Electrostatic air cleaners, one of a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code. It supersedes the previous editions, published in 2009, 1986, and 1982.

This Standard applies to electrostatic air cleaners for use in nonhazardous locations and for installation in accordance with the Canadian Electrical Code, Part I.

This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.

This Standard was prepared by the Subcommittee on Electrostatic Air Cleaners, under the jurisdiction of the Technical Committee on Consumer and Commercial Products and the Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the Technical Committee.

Interpretations: The Strategic Steering Committee on Requirements for Electrical Safety has provided the following direction for the interpretation of standards under its jurisdiction: “The literal text shall be used in judging compliance of products with the safety requirements of this Standard. When the literal text cannot be applied to the product, such as for new materials or construction, and when a relevant committee interpretation has not already been published, CSA Group's procedures for interpretation shall be followed to determine the intended safety principle”.

Notes:

1. Use of the singular does not exclude the plural (and vice versa) when the sense allows.

2. Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.

3. This Standard was developed by consensus, which is defined by CSA Policy governing standardization — Code of good practice for standardization as “substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity”. It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this Standard.

4. To submit a request for interpretation of this Standard, please send the following information to inquiries@csagroup.org and include “Request for interpretation” in the subject line:

   1. define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;

   2. provide an explanation of circumstances surrounding the actual field condition; and

   3. where possible, phrase the request in such a way that a specific “yes” or “no” answer will address the issue.

      Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are available on the Current Standards Activities page at standardsactivities.csa.ca.

5. This Standard is subject to review five years from the date of publication. Suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to inquiries@csagroup.org and include “Proposal for change” in the subject line:

   1. Standard designation (number);

   2. relevant clause, table, and/or figure number;

   3. wording of the proposed change; and

   4. rationale for the change.

C22.2 No. 187-15

Electrostatic air cleaners

1. Scope

   
   

   1.1

   This Standard applies to

   1. electrostatic air cleaners intended to remove dust and dirt from the air and intended for general indoor residential and commercial use;

   2. air ionizer type air cleaners; and

   3. other similar ionizing equipment.

   
   

   1.2

   This Standard applies to equipment for commercial use that intentionally produces ozone in temporarily unoccupied space incorporating an integral ozone detector.

   
   

   1.3

   This Standard applies to cord-connected and permanently connected equipment operating at nominal supply voltages up to 600 V, single-phase or polyphase, in accordance with the Rules of the Canadian Electrical Code, Part I.

   
   

   1.4

   This Standard applies to portable air cleaning devices that incorporate a UV lamp that emits UV radiation between 100 and 280 nm (UVC).

   
   

   1.5

   This Standard does not apply to electrostatic air cleaners for use in hazardous locations or in atmospheres defined as hazardous by the Canadian Electrical Code, Part I.

   
   

   1.6

   This Standard does not apply to air cleaners designed to remove particles other than dust and dirt normally found in heating and ventilating systems.

   
   

   1.7

   This Standard does not specify requirements for the effectiveness of air cleaners with respect to the removal of airborne particles.

   
   

   1.8

   This Standard does not apply to electrostatic air cleaners intended for industrial use.

   
   

   1.9

   This Standard does not apply to air cleaners for residential use that are designed to generate ozone intentionally.

   1.10

   This Standard does not apply to ozone generators, and/or devices intentionally using ozone to treat or condition air, designed exclusively to be connected to air duct systems.

   
   

   1.11

   In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard.

   Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

   
   

   Notes to tables and figures are considered part of the table or figure and may be written as requirements.

   
   

   Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

   
   

2. Reference publications

This Standard refers to the following publications, and where such reference is made, it shall be to the edition listed below.

Group CSA

C22.1-15

Canadian Electrical Code, Part I

CAN/CSA-C22.2 No. 0-10

General Requirements — Canadian Electrical Code, Part II

CAN/CSA-C22.2 No. 0.4-04 (R2013)

Bonding of electrical equipment

C22.2 No. 0.5-1982 (R2012)

Threaded conduit entries

C22.2 No. 0.8-12

Safety functions incorporating electronic technology

C22.2 No. 0.15-01 (R2012)

Adhesive labels

CAN/CSA-C22.2 No. 0.17-00 (R2013)

Evaluation of properties of polymeric materials

C22.2 No. 8-13

Electromagnetic interference (EMI) filters