Section 194. Sprinkler heads in rooms

1. On and after July first, nineteen
  hundred fifty-seven, in every room used for class B occupancy whether in
  a class A or class B non-fireproof converted dwelling,  there  shall  be
  one  or more sprinkler heads. Such sprinkler heads shall be installed in
  accordance  with  the  supplementary  rules  and  regulations   of   the
  department.  This  requirement shall not apply to dwellings which have a
  required second means of egress.
    2. The requirements of this section shall  not  apply  to  a  dwelling
  located within an area designated on the master plan as an area suitable
  for  development  and  redevelopment,  provided  (a)  that the agency in
  charge of such clearance shall have certified to the  department  on  or
  before  February  first,  nineteen  hundred fifty-nine that the dwelling
  will be demolished within one  year  after  the  service  of  notice  of
  violation and (b) that the dwelling is not in violation of any rules and
  regulations  relating  to overoccupancy, egress or fire protection. Such
  temporary exemption  from  the  requirements  of  this  section  may  be
  extended  for  an  additional  period  of  not more than six months upon
  renewal of such certification of demolition and safety.