Section 322-C. Gas space heating appliances to be equipped with back draft diverters and automatic shutoff devices

On  and  after  July  first,
  nineteen  hundred  sixty-five  it  shall  be  unlawful to manufacture or
  assemble, or to sell or offer for sale, or to install, use  or  maintain
  in  any  building  used  or  occupied  as a residence, any space heating
  appliance  using  natural  and/or  manufactured  gas  fuel  unless  such
  appliance  is  equipped  with  (a)  a  back draft diverter with vents of
  sufficient capacity to permit the discharge  of  combustion  gases  away
  from the burning gas, except where such appliance (i) is provided with a
  sealed  combustion  chamber  directly  vented to the outside, or (ii) is
  listed by an accredited third party agency as an unvented  appliance  in
  compliance with American National Standard Z21.11.2 and meets or exceeds
  standards  established  by  rules and regulations promulgated, and which
  may be periodically amended, by the department of health and approved by
  the state  fire  prevention  and  building  code  council,  and  (b)  an
  automatic  shutoff  device  to  prevent  the flow of gas if the flame or
  pilot light, thereof is extinguished; provided,  however,  that  nothing
  contained  herein  shall  be  construed  as  repealing  or in any manner
  limiting,  restricting  or  diminishing  any  power  conferred  by   any
  provision  of  law  upon  any city having a population of one million or
  more, or any body, agency or officer thereof, to enact  or  adopt  local
  laws,  ordinances,  other  local  enactments  or  rules  or  regulations
  relating in any manner to gas space heating appliances, so long as  such
  local  laws,  ordinances,  enactments, rules or regulations in so far as
  the same relate to the subject matter of  this  section,  are  not  less
  restrictive  than  the  provisions of this section.   A violation of the
  provisions of this section shall constitute a misdemeanor.