(See Note A-6.3.1.5.)
(1)
Air contaminants of concern within buildings shall
(a)
be removed insofar as is possible at their points of origin, and
(b)
not be permitted to accumulate in concentrations greater than those permitted by good engineering practice such as that described in the publications listed in Sentence 6.2.1.1.(1), measured using the methodology described therein.
(2)
Systems serving spaces that contain sources of contamination and systems serving other occupied parts of the building but located in or running through spaces that contain sources of contamination shall be designed in such a manner as to prevent the spread of such contamination to other occupied parts of the building.
(3)
Heating, ventilating and air-conditioning systems shall be designed to minimize the growth and spread of bio-contaminants.
(4)
Mechanical rooms containing refrigeration equipment shall be ventilated in accordance with CSA B52, “Mechanical refrigeration code”.