Mich. Admin. Code R. 400.10547 - Heating devices and flame-producing devices

Rule 547.

(1) In large and secure facilities and all newly constructed and converted facilities, flame-producing-type heating devices and incinerators shall be in an enclosure that provides at least 1 hour of resistance to fire. Adequate combustion air shall be provided directly from the outside through a permanently open louver. Fire dampers are not required in ducts that penetrate this enclosure.

(2) In existing small facilities, flame-producing-type heating devices and incinerators approved pursuant to R 400.71 et seq. shall continue to be approved with regard to enclosure or lack of enclosure until the portion of the facility that contains the flame-producing device is remodeled or the facility is converted. This subrule does not abrogate requirements relative to maintaining doors and other safety devices in proper working order.

(3) Electric heating shall be installed in accordance with the manufacturer's specifications and shall be 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 to store combustibles or as a maintenance shop unless sprinklered.

(7) A furnace and other flame-producing units 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 the chimney is installed and used 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.

Notes

Mich. Admin. Code R. 400.10547

1992 AACS