Section 28-412.2. Classifications

Oil-burning  equipment installer licenses
  shall be classified as follows:
    1. Class A  oil-burning  equipment  installer  license.  Licenses  the
  holder  thereof  to  install  any  type  of oil-burning equipment, as an
  independent contractor with full responsibility for the manner in  which
  the  work  is done, and for the material and equipment used, and for the
  control and direct and continuing supervision of the persons employed on
  the work.  Such equipment shall include but not be limited  to  burners,
  boilers and generators.
    2.  Class  B  oil-burning  equipment  installer  license. Licenses the
  holder thereof to install oil-burning equipment for the use of  domestic
  fuel  oils  from  number  one fuel oil to and including number four fuel
  oil, as an independent  contractor  with  full  responsibility  for  the
  manner  in which the work is done, for the materials and equipment used,
  and for the control and direct and continuing supervision of the persons
  employed on the work.