(a) General Requirements.
(1) Incinerators shall be of adequate capacity for the intended use.
(2) Fuel-fed incinerators shall be equipped with means for burning auxiliary fuel in sufficient quantity to assure complete combustion of refuse.
(3) A flue serving an incinerator shall be provided with a substantially constructed spark arrester.
(4) Incinerators shall be connected to a suitable noncombustible chimney, smoke-stack or flue.
(5) Connections to incinerators shall provide free passage of refuse without clogging.
(b) Service Openings.
(1) Service openings shall be readily accessible to the building occupants.
(2) Durable signs with plainly legible letters prohibiting disposal of highly flammable substances in incinerators shall be provided near service openings.