(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.)