46 CFR § 95.16-50
Instructions
April 15, 2021
(a) Simple, complete operating instructions must be conspicuously located at or near any release station and in the extinguishing agent cylinder storage room.
(b) On a system in which extinguishing agent cylinders are stored outside the protected space, operating instructions must also:
(1) Include a schematic diagram of the system; and
(2) Describe alternate methods of discharging the extinguishing agent into protected spaces should the manual releases or stop valve controls fail to operate.