Section 27-781. Refrigerating systems

The  following test and inspection
  requirements shall be complied with in order to obtain an equipment  use
  permit for a refrigerating system, except as hereinafter provided.
    (a) Procedure. A refrigeration system shall be designated for test and
  inspection  under the requirements for controlled inspection as provided
  in article eight of subchapter one of this chapter, except that it shall
  not be required that the architect or engineer be in the employ  of  the
  owner.  Test information and all other information required by reference
  standard RS 13-6 shall be posted, and the inspection shall  be  made  of
  the  completed  system to verify that the installation complies with the
  requirements of this subchapter.
    (b) Temporary permits. A  temporary  equipment  use  permit  shall  be
  required  for a nonoperating system in which a charge is maintained. See
  subchapter one  of  this  chapter  for  provisions  governing  temporary
  permits.
    (c)  Exception.  No  equipment  use  permit or temporary equipment use
  permit shall be required for any refrigerating system exempted under the
  provisions of section 27-189 of article eighteen of  subchapter  one  of
  this  chapter; for any system using a group A2, B1 or B2 refrigerant and
  having a prime mover of one horsepower or less; or for any system  using
  water or air as a refrigerant.