Technical data

Page 53
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [e-mail]
February, 2010
PREACTION SPRINKLER
SYSTEM
Location of Release and Pressure Switch: The location of the solenoid valve is shown on the various sys-
tem data sheets. Flow through the release must be in the direction indicated. The pressure switch in the
release control unit system is located in the alarm line.
Manually-Operated Release System Requirements
Manually operated release systems are usually integrated into one of the other types of release systems.
NFPA 13 requires the manual release device to be a stand-alone arrangement to ensure operation, re-
gardless of the potential failure of the associated detection system. Normally a system will incorporate a
manual (emergency) release at the valve, exits, operator station, or other convenient locations to operate
the system during a fire emergency.
Any time the handle inside emergency release is pulled, pressure is released from the priming chamber;
the deluge valve will open but the water will be contained in the sprinkler piping. Water motor alarm and
alarms connected to alarm pressure switch will activate. If a sprinkler head opens, water will flow from the
system.
Release Control Panel
The release panel is an essential component for system operation and is required to be listed.
Note that NFPA 72 (sections 3.3.64 and 3.3.67) provides the following definitions related to the release
control panel (fire alarm control unit) and fire alarm system:
Release Control Panel
The release panel is an essential component for system operation and is required to be listed.
Note that NFPA 72 (sections 3.3.64 and 3.3.67) provides the following definitions related to the release
control panel (fire alarm control unit) and fire alarm system:
Fire Alarm Control Unit: A component of the fire alarm system, provided with primary and secondary power
sources, which receives signals from initiating devices or other fire alarm control units, and processes
these signals to determine part or all of the required fire alarm system output function(s).
Releasing Service Fire Alarm Control Unit: A protected premises fire alarm control unit specifically
listed for releasing service that is part of a fire suppression system and which provides control
outputs to release a fire suppression agent based on either automatic or manual input.
Fire Alarm System: A system or portion of a combination system that consists of components and
circuits arranged to monitor and annunciate the status of fire alarm or supervisory signal-initiating
devices and to initiate the appropriate response to those signals.
Releasing Fire Alarm System: A protected premises fire alarm system that is part of a fire suppres-
sion system and/or which provides control inputs to a fire suppression system and/or which
provides control inputs to a fire suppression system related to the fire suppression systems
sequence of operations and outputs for other signaling and notification.
Devices for Test Purposes and Testing Apparatus
Where detection devices installed in circuits are located where not readily accessible for testing, Section
7.3.1.7 of NFPA 13
† requires an additional detection device to be provided on each circuit for test purposes
at an accessible location. The device shall be connected to the circuit at a point that will ensure a proper
test of the circuit.
The testing device used must be capable of producing the heat or impulse necessary to operate any nor-
mal detection device and shall be furnished by to the property owner with each installation.
Where explosive vapors or materials exist, other methods of testing that don’t involve an ingnition source
(such as hot water or steam) shall be used.