915.07 BACKFLOW PROTECTION ON FIRE SUPPRESSION SYSTEMS.
   (a)   An approved reduced pressure principle detector assembly shall be used on the following types of fire suppression systems:
      (1)   All foam-water fire suppression systems;
      (2)   Systems with an auxiliary water supply; and
      (3)   Systems with chemical additives.
   (b)   An approved double detector check assembly shall be used on all other types of fire suppression systems not mentioned above.
(Res. 92-824. Approved 12-29-92.)