Section 27-818. Enclosures

Latest version.

Enclosures of floor furnaces shall be constructed
  entirely of noncombustible materials with a fire resistance rating of at
  least one hour and the enclosure shall be provided with adequate outdoor
  air  in  accordance  with  the  requirements  of  article  nine  of this
  subchapter to ensure proper combustion. The enclosure shall be  provided
  with adequate means of access for servicing the furnace.

                    
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