SUN - CSA C22.2.187, Electrostatic Air Cleaners

Effective December 18, 2017

Standard Information
Standard Number:
CSA C22.2.187
Standard Name:
Electrostatic Air Cleaners
Standard Edition and Issue Date:
4th Edition Dated February 1, 2015
Date of Previous Revisions to Standard:
3rd Edition Reaffirmed 2014
 
Effective Date of New/Revised Requirements

Effective Date (See Schedule below): December 18, 2017

 
Impact, Overview, Fees and Action Required

Impact Statement: A review of all Listing Reports is necessary to determine which products comply with new/revised requirements and which products will require re-evaluation. NOTE: Effective immediately, this revised standard will be exclusively used for evaluation of new products unless the Applicant requests in writing that current requirements be used along with their understanding that their listings will be withdrawn on Effective Date noted above, unless the product is found to comply with new/revised requirements.

Overview of Changes: The changes with respect to the previous edition includes additional general construction requirements related to interlocks, UV enabled products, and capacitors. Additionally, new construction, testing and markings related to ozone generators were added. Specific details of new/revised requirements are found in table below.

Schedule: So that shipping of products with Listing Marks will not be interrupted, an approximate schedule has been established to ensure Listing Reports are found compliant by Effective Date:

  • April 19, 2017 = 8 Month Report Review – Intertek will review all Reports. Update if compliance is verified or issue Findings Letter/Quote for any re-evaluations needed
  • June 19, 2017 = 6 Month Quote Cut-off – Quotes returned for necessary re-evaluations
  • November 20, 2017 = 30 Day Warning – Client advised of all non-compliant Reports to be Suspended
  • December 18, 2017 = Effective Date – ATM Suspended for all non-compliant Reports

Fees: So that production of products bearing the Listing Mark will not be interrupted, a quote will be issued for the Applicant to work with their local Intertek Lab to determine the necessary test program, sampling requirement and needed construction details and/or updated marking/instruction details.

Action Required:

Submit Information/Samples – The Intertek Engineer will identify what specific information and samples are needed to assist with verification of compliance with current production.

Current Listings Not Active? – Please immediately identify any current Listing Reports or products that are no longer active and should be removed from our records. We will do this at no charge as long as Intertek is notified in writing prior to the review of your reports.

 
Description of New/Revised Technical Requirements
ClauseVerdictComment
1InfoScope
1.4InfoNew clause added;

This Standard applies to portable air cleaning devices that incorporate a UV lamp that emits UV radiation between 100 and 280 nm (UVC).
5InfoConstruction
5.1.9 New section added;
5.1.9.1 Duct-type, air cleaners and air purifiers shall not be energized in the absence of air-flow in the HVAC system. Installation instructions shall include wiring details to achieve this result.
5.1.9.2 UV DUCT-type air purifiers that provide provision to replace UV lamp by user shall be constructed with an interlock, or the cover or panel shall be secured by a means requiring the use of a tool to open it, and shall be marked in accordance with Clause 8.6. The interlock shall interrupt the power to the lamp when the cover that provides access to the lamp is removed or when the cover is not secured properly as confirmed in the installation manual. A warning label shall be provided on the cover of the interlock as in Clause 8.14.
5.1.9.3 The installation instructions shall confirm that no exposure to the UV light will occur in the final installation when the HVAC system filter and/or any other associated panel is removed.
5.1.10 New section added;
5.1.10.1 The requirements of CAN/CSA-C22.2 No. 74 shall apply when a ballast is used. In addition, CSA TIL B-68 shall apply.
5.1.10.2 Air cleaners that produces UV radiation, and not contained by the equipment enclosure, shall not be capable of causing exposure that exceeds the recommended guidelines as referenced in CSA TIL I-34.
5.1.10.3 Air cleaners that provide provision to replace UV lamp by user shall be constructed with an interlock, or the cover or panel shall be secured by a means requiring the use of a tool to open it, and shall be marked in accordance with Clause 8.6. The interlock shall interrupt the power to the lamp when the cover that provides access to the lamp is removed or when the cover is not secured properly as confirmed in the installation manual. A warning label shall be provided on the cover of the interlock as in Clause 8.14.
5.1.10.4 Air cleaners that provide removal of a cover by the user to replace the UV lamp shall not provide access to any bare live parts involving shock hazards when the cover is removed.
5.1.10.5 The replacement lamp and type number shall be clearly marked on the unit in a permanent manner and included in the installation and operational manual.
5.5.2 

New clause added;

For ozone generators intended for use in temporary unoccupied spaces,

a)   all insulators shall be constructed of a material resistant to the maximum concentration of ozone produced by the device that the material could be exposed shall meet the requirements of CSA C22.2 No. 127, Clause 6.2.11; and

b)   all polymeric materials used in construction shall be resistant to the maximum concentration of ozone produced by the device, or 1.5% by weight in air as demonstrated

    i) in ANSI/NSF 222, Clauses 4.1.1 and 4.1.2; or
    ii) by manufacturer documentation demonstrating compatibility. Deterioration or breakdown of the insulation material shall not result in a shock or fire hazard.
5.10InfoCapacitors
5.10.1 

Additions to existing requirements are underlined below.

Capacitors shall be so constructed and made of such materials that they will not create a fire hazard. Capacitors shall meet the requirement of CAN/CSA-E60384-14.
5.12InfoSwitches, lampholders, and interlocks
5.12.3 

New clause added;

Interlock switch shall meet the requirements of CAN/CSA-C22.2 No.61058-1 for non-electronic type switch and rated for minimum 10 000 endurance cycles.
   
7InfoOzone
7.1 General

Revised to add “air cleaners incorporating or using UVC lamps” to the scope of section 7.
7.2InfoRequirements
7.2.2 Revised to add The equivalent French wording to the manual under safety instructions
7.3 (a) 

Additions to existing requirements are underlined and deletions are shown lined out below

Markings

In addition to the marking requirements of Clause 8, the following shall be marked in a permanent and visible manner on air cleaners intended for commercial use:

a) CAUTION: HIGH LEVELS OF OZONE MAY CAN BE INJURIOUS TO HEALTH. USE AS DIRECTED IN WELL-VENTILATED LOCATIONS A LOCATION NO SMALLER THAN INDICATED IN THE INSTALLATION INSTRUCTIONS *

* The equivalent French wording is ATTENTION: DES NIVEAUX ÉLEVÉS D'OZONE PEUVENT ÊTRE NOCIFS. RESPECTER LES CONSIGNES ET UTILISER DANS UN ENDROIT BIEN VENTILÉ ENDROIT QUI N'EST PAS INFÉRIEUR QU'INDIQUÉ DANS LES INSTRUCTIONS D'INSTALLATION.
7.4InfoTests
7.4.2.2 

Additions to existing requirements are underlined and deletions are shown lined out below

The test shall be conducted in a room
a) with a volume of 26.9 to 31.1 m3;
b) with a minimum side dimension of 2.5 m × 3.0 m;
c) with a maximum height of 3.0 m; and
d) without openings.

The test room walls, shall be covered with a sheet of polyethylene to make the chamber substantially airtight. floor, and ceiling of the chamber shall be stainless steel or similar non-porous material and a of demonstrated ozone reactivity equivalent to stainless steel.

The air tightness of the chamber shall be evaluated using ASTM D6670 at 10 Pa static conditions. To be considered air tight the chamber shall have an air exchange rate of 0.03 ACH as determined using either fan pressurization or tracer gas methods.
7.4.2.4 Revised to add capability specifications of ozone analyzers; to record and or report data in 0.001 ppmv increments, and an accuracy of +/- 0.010 ppmv or better.
7.4.3 

Additions to existing requirements are underlined below.

Endurance test

The dial of the ozone-level control system shall be set at the maximum position, and the unit shall be subjected to 100 000 cycles of operation by alternatively subjecting the unit to

a)   an ozone-rich atmosphere of the same concentration as measured in Clause 7.4.2.5, which turns the sensor ON; and
b)    an atmosphere with a low ozone level, which turns the sensor OFF. At the completion of the test, the ozone generator shall be subjected to the test of Clause 7.4.2 and the concentration of ozone produced shall not exceed the concentration prior to that test by more than 25%, up to a maximum of 0.050 ppmv. 

Note: The test may be performed on
a)    the entire air cleaner; or
b)    the ozone control system removed from the air cleaner, tested as a component, and reinstalled in the unit.

7.5 

New section added;

Electrostatic in duct duct-type air cleaners for residential use

This new section includes new construction requirements, test requirements, and labelling for Electrostatic in duct duct-type air cleaners for residential use (see standard for section details).
7.6 

New section added;

UVC in duct-type air purifiers for residential use

This new section includes new construction requirements, test requirements, and labelling for UVC in duct-type air purifiers for residential use (see standard for section details).
7.7InfoCommercial ozone generator designed exclusively for use in temporarily unoccupied spaces
7.7.7.1InfoOzone sensor and detector
7.7.7.1.2 (g) 

Additions to existing requirements are underlined below.

Required features for ozone detector and controller
The ozone detector and controller circuit shall include the following features:

g) the unit shall shutdown the ozone generating circuit if any internal fault in the ozone detector or the controller circuit occurs.
7.7.7.3InfoElectronic circuits
7.7.7.3.2 

New clause added;

Safety function requirements

The following shall apply with reference to CSA C22.2 No. 0.8:

a) The ozone detector, associated controller, and alarming function shall be considered as class B type, when evaluating for functional safety.
b) The following safety functions shall apply as a minimum:

    i) fault tolerating time not be more than 60 s;
    ii) alarm to operate when the ozone level is above 0.05 ppmv; and
    iii) ozone generator ceases to produce ozone above 0.80 ppmv.
7.7.7.3.3 

New clause added;

Electromagnetic compatibility (EMC) tests

The following test clauses in CSA C22.2 No. 0.8 shall be applicable for electromagnetic compatibility (EMC) as a minimum, for safety tests for electronic components:
a) Clause 6.3.2, with battery back- up conduct three tries;
b) Clauses 6.3.4, 6.3.6, 6.4, and 6.4.3.3;
c) Clause 6.3.7, conduct only at the highest level if there are no surge protection components;
d) Clause 6.4.5, if microcomputer is involved; and
e) Clause 6.4.3.4, to be conducted at 3V/m, up to 4 sides. Condition of acceptability is, the unit under test operates as intended.
The test shall be performed with the generating antenna facing each side of the EUT (equipment under test). When equipment can be used in different orientations (i.e., vertical or horizontal), all sides shall be exposed to the field during the test. When technically justified, some EUTs can be tested by exposing fewer faces to the generating antenna. In other cases, as determined for example by the type and size of EUT or the frequencies of test, more than four azimuths might need to be exposed.

Notes:
1) As the electrical size of the EUT increases, the complexity of its antenna pattern also increases. The antenna pattern complexity can affect the number of test orientations necessary to determine minimum immunity.
2) If an EUT consists of several components, it is not necessary to modify the position of each component within the EUT while illuminating it from different sides.

7.7.8.3InfoCalibration test
7.7.8.3.1 (e) 

Additions to existing requirements are underlined below.

Test conditions
The following test conditions shall be met:

e) The ozone analyzer shall be able to record data in 0.001 ppmv increments and shall have an accuracy of +/- 0.050 ppmv or better.
8InfoMarking
8.13 

New clause added;

For air cleaning equipment using UVC lamp, the following shall apply:

Caution: DISCONNECT POWER FROM ASSEMBLY BEFORE SERVICING OR REPLACING UV LAMP*.
* The equivalent French wording is ATTENTION: COUPER L'ALIMENTATION DE L'ASSEMBLAGE AVANT DE PROCÉDER AU DÉPANNAGE OU REMPLACEMENT DU LAMPE UV.

8.14 

New clause added;

For air cleaning equipment using UVC lamp with a protective cover, the following shall apply:

Warning: THIS COVER IS PROVIDED WITH AN INTERLOCK TO REDUCE THE RISK OF EXPOSURE TO EXCESSIVE ULTRAVIOLET RADIATION. DO NOT DEFEAT ITS PURPOSE. DO NOT ATTEMPT TO SERVICE WITHOUT REMOVING COVER COMPLETELY*.
* The equivalent French wording is AVERTISSEMENT: CE COUVERCLE EST MUNI D'UN SYSTÈME DE VERROUILLAGE PERMETTANT DE RÉDUIRE LES RISQUES D'EXPOSITION AU L'EXCÈS DE RAYONS ULTRAVIOLETS. NE PAS NUIRE À L'ACTION DU VERROUILLAGE. NE TENTEZ PAS DE RÉPARER SANS ENLEVER LE COUVERCLE.

CUSTOMERS PLEASE NOTE: This Table and column "Verdict" can be used in determining how your current or future production is or will be in compliance with new/revised requirements.