not rely on combustion of fossil fuel for heat, ventilation, or hot water; (ii) is not connected in any way to a garage; and (iii) is not sufficiently close to any ventilated source of carbon monoxide, as determined by the local building commissioner, to receive carbon monoxide from that source.

to any source of carbon monoxide so as to be at risk of receiving carbon monoxide from that source, as determined by the local building commissioner.