SUN - CSA C22.2.187, Electrostatic Air Cleaners

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.

Additions to existing requirements are underlined below.

New clause added;

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 *

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.

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.

New section added;

Electrostatic in duct duct-type air cleaners for residential use

New section added;

UVC in duct-type air purifiers for residential use

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:

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.

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.

Additions to existing requirements are underlined below.

Test conditions
The following test conditions shall be met:

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.

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.