Potter Releasing Systems - Manual (Page 40)

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Sprinkler System Supervision Includes:
Water Pressures
Water Flow
Water Supply Control Valves
Fire Pump Status
Water Tank, Levels, Pressures and Temperatures
Air Pressure on Dry Pipe Systems
Building Temperature
Water supply control valves shall be supervised to obtain a distinctive signal when in an off normal position,
within 2 revolutions of the handwheel, or when the valve has moved 1/5 from its normal position.
The switch shall not restore to a normal condition throughout the entire travel of the valve, until it is restored to
a fully open position.
When connected to a fire alarm panel, a Supervisory signal must be visually or audibly distinctive from both
Alarm and Trouble signals.
Water flow and supervisory devices cannot be connected on the same initiating circuit so that the closing of a
valve is annunciated as a “trouble” condition.
The following pages in this section have been reprinted with permission from Fire Protection Systems, Second
Edition, Inspection, Test & Maintenance Manual Copyright (C) 1993, National Fire Protection Association,
Quincy, MA. 02269