To limit the probability that heat radiating from a cooktop or from an open fire will ignite nearby framing, finishes or cabinetry, which could lead to the spread of fire, which could lead to harm to persons.
To supersede the requirements stated in CAN/CSA-B149.1, referred to in Sentence 9.10.22.1.(1), with regard to natural gas and propane cooktops, in cases of conflict.