Section R. 400.10633 - Heating devices and flame-producing devicesRule 633.
(1) Flame-producing-type heating devices and incinerator devices on any story of a residential group home facility that is used by residents shall be in an enclosure that provides at least 1 hour of resistance to fire. Any interior door to the enclosure shall be at least a B-labeled fire door in a labeled frame that is equipped with latching hardware and a self-closing device. Adequate combustion air shall be provided to the enclosure directly from the outside through a permanently opened louver or continuous ducts. Fire dampers are not required in ducts that penetrate this enclosure.(2) If flame-producing-type heating devices or incinerator devices are located on a story that is not used by residents, there shall be a separation between the story or stories that contain such devices and resident-used stories such that at least a 3/4-hour resistance to fire is provided. Any interior stairway to such a nonresident-used story shall have at least a 1 3/4-inch solid-core wood door which is equipped with latching hardware and a self-closing device which separates the nonresident-used story from resident-used stories.(3) Electric heating shall be installed in accordance with the manufacturer's specifications and shall be of a type approved by a nationally recognized, independent testing laboratory.(4) Portable heaters and space heaters, including solid fuel heaters, are prohibited.(5) A fireplace is permitted if it is masonry and has all of the following components: (a) An approved glass door shielding the opening. The door shall be closed at all times, except when a fire is being tended.(b) A noncombustible hearth that extends a minimum of 16 inches out from the front, and 8 inches beyond each side, of the fireplace opening.(c) A noncombustible face that extends not less than 12 inches above, and 8 inches on each side of, the fireplace opening.(d) A masonry chimney that is constructed with approved flue liners.(6) A heating plant room shall not be used for combustible storage or for a maintenance shop unless sprinklered.(7) A furnace and other flame-producing unit shall be installed according to manufacturer and test specifications and shall be vented by metal ducts to a chimney which is constructed of bricks, solid block masonry, or reinforced concrete, which has an approved flue lining, and which is properly erected and maintained in a safe condition. A bracket chimney is not permitted. This rule does not prohibit the installation and use of any prefabricated chimney that bears the label of an approved, nationally recognized, independent testing laboratory if it is installed in accordance with manufacturer and test specifications and is compatible with the heating unit or units connected to it. Only gas- and oil-fired units may be connected to a prefabricated chimney.Mich. Admin. Code R. 400.10633