§ 42-21. Fire protection and location of burner.

A. 

All woodwork, wooden lath-and-plaster partitions or other combustible material within four feet of the side or back and eight feet from the front of the burner shall be covered with plaster, asbestos board or other noncombustible material. Above the burner there shall be constructed a ceiling of a noncombustible material. In case of small home equipment the ceiling shall be of the dimensions six feet by eight feet and in larger equipment shall extend beyond the sides and back at least four feet and at least eight feet from the front. At least a thirty-six-inch clearance shall be provided between the top and sides of breaching and flues from the ceiling partition and other combustible materials unless the breaching and flues are insulated with two to four inches of asbestos lagging or equivalent, in which case the clearance may be reduced to 18 inches.

B. 

Large kitchen ranges used in hotel and restaurant kitchens may be equipped with oil burners provided with modern cutoff devices for oil from the storage tank but must have a permanent opening in the ash-pit door and a gas conduit to the stack or chimney for the purpose of conducting burned or exhaust gases. Such conduit must be of sufficient capacity so that all danger of accumulation of pockets of burned gas is avoided.