4.11 Sprinkler System Water Flow Alarms

Reference: 2007 C.B.C. Section 903.4

This bulletin applies to sprinkler systems serving only one building. Systems serving more than one building will be reviewed on a case by case basis.

MONITORED SYSTEMS

Sprinkler systems that are electrically monitored (in accordance with section 903.4 of the 2007 California Building Code), shall have the following features:

1. A water-flow alarm at an approved location on the exterior of the building;
2. One manual pull station in an approved location;
3. A fire alarm control panel listed for such use;
4. A single smoke detector to protect the panel is required (unless it's in a constantly attended location). The annunciator shall be near the entrance in a location approved by the district inspector. The control panel shall be in an approved location.

All fire alarm installations require building and electrical permits, and shall be designed and installed in accordance with NFPA 72, 2002 edition.

UNMONITORED SYSTEMS

Unmonitored sprinkler systems are required to have an audible water-flow alarm on the exterior of the building in an approved location.

Exception: Systems installed in accordance with NFPA 13D, 2002 editions equipped with smoke detectors installed in accordance with NFPA 72, 2002 edition.

Water-flow devices that are not part of a fire alarm system shall be installed in accordance with NFPA 70, National Electrical Code, Article 760. There is no requirement for the water-flow device to be connected to a fire alarm control panel when the system is not monitored and there is no fire alarm system in the building.