SPECIFICATIONS
FOR
THE GUARDIAN
MODEL #G300A
AUTOMATIC RESIDENTIAL
FIRE EXTINGUISHING SYSTEM
SCOPE:
This specification
includes minimum requirements for fire extinguishing systems which discharge
chemical from fixed nozzles by means of expellant gas. It contains essentials
necessary to ensure compliance with the National Fire Protection Association
(NFPA) standards and Underwriters Laboratories Incorporated (U.L.).
PURPOSE:
This specification
is prepared for the use and guidance of those charged with the purchasing,
designing, and approving fire extinguishing systems pre-engineered for
residential kitchen range top protection.
DEFINITIONS:
For the purpose of
clarification, the following general terms used with special technical meanings
in this specification are defined:
WET CHEMICAL: Normally a solution of water and potassium carbonate-based
chemical, potassium acetate-based chemical or a combination thereof, which
forms an extinguishing agent.
LISTED: Equipment or materials included in a list published by
Underwriters Laboratories Incorporated (U.L.)
SHALL: Indicates a mandatory requirement.
SHOULD: Indicates a recommendation or that which is advised but not
required.
APPLIANCE: For the purpose of this specification, appliance means a residential
type kitchen range supplied by gas or electricity to power and heat range top
burners.
GENERAL DESCRIPTION:
The
fire extinguishing system shall be capable of detecting a cooking grease fire
originating on the range top, extinguish the fire, and prevent re-ignition,
while at the same time, shut-off the gas or electric supply to surface elements
on the kitchen range top. Each system shall be provided with a means to
distribute the chemical agent, fire detection components, container for storing
the chemical, valve assembly with pressure gauge, enclosure assembly for
container, and appliance shut-off device. These components shall be provided
factory assembled and ready for installation and installed in accordance with
an approved owner’s manual.
CERTIFICATION:
The fire
extinguishing systems shall have a current U.L. listing under the category
“Residential Range Top Fire Protection” in the most recent Fire Protection
Equipment Directory (FPED).
CHEMICAL AGENT:
WET CHEMICAL: Shall
conform to the requirements of National Fire Protection Association (NFPA)
Standard No. 17A for Wet Chemical Fire Extinguishing Systems.
SYSTEM COMPONENTS:
SYSTEM ENCLOSURE: The
system enclosure shall consist of the pressurized extinguisher cylinder with
wet chemical fire suppressant, central processing unit control board with
terminal block connections, electronic release valve, cylinder pressure gauge,
enclosure base, and enclosure cover.
Operation of the
extinguisher unit is controlled by the supervised electronic control panel,
which is battery powered. Detection is initiated through the heat sensors,
activating the alarm and the extinguisher. The electric or gas shutdown devices
can either be sonically operated by the control panel, or hardwired to the
central processing unit control board.
CYLINDER AND VALVE ASSEMBLY: The
extinguisher cylinder and valve assembly shall be provided fully charged with
chemical and pressurized with dry nitrogen in accordance with listed
requirements. A pressure gauge attached to the valve assembly shall be
positioned to allow visual inspection when installed within a kitchen cabinet.
Maximum allowable height of container (including the enclosure assembly) shall
not exceed 12 inches. The container and valve assembly shall be of the re-serviceable
type and provide maintenance requirements synonymous with that required for
portable hand-held fire extinguishers, according to National Fire Protection
Association (NFPA) Standard 10. The container and valve assembly shall be
provided factory assembled to the enclosure. Assembly shall include a
pre-mounted CPU control board for the appliance shut-off device and necessary
attachment for the Fire Detection Unit.
The complete
extinguisher cylinder and valve assembly shall be installed in a protected area
above the range hood (normally, kitchen cabinets). Installations which expose
extinguisher cylinder and valve assembly to direct cooking heat and grease will
not be accepted.
CENTRAL PROCESSING UNIT CONTROL
BOARD:
The CPU control
board is housed / attached inside the system enclosure. The control board’s
circuitry is powered by a 9V DC battery and has the following features:
SUPERVISED CIRCUITRY: The
audible 106DB alarm on the CPU control board will “alarm” to warn of possible
trouble in the electronic circuitry including the heat sensors, if there is an
open circuit.
SYSTEM OPERATION LIGHT: The
red “power” light will blink approximately every 45 seconds to confirm the
system is operating.
AUDIBLE
ALARM: The system 106DB alarm is designed to
continuously sound once the system has been activated by a stove top fire.
LOW
AUXILIARY OUTPUTS: Can
be connected to automatic telephone dialers, monitored security alarm systems
or other warning/protective equipment. Auxiliary outputs provide one (1) second
impulses to activate above items. These connections are rated at 5 AMP at 250V
AC.
TEMPERATURE ACTIVATED SENSOR
ASSEMBLY:
The sensor assembly
shall consist of two (2) metal housed detector assemblies containing diode-type
heat sensors, affixed to the side of the magnetic nozzle bases, and connected
to the CPU control board with two (2) different wire lengths.
DISTRIBUTION ASSEMBLY:
The distribution
assembly shall consist of two (2) Teflon-lined stainless steel braided hoses
and two (2) magnetic based adjustable nozzle assemblies. The use of copper
tubing shall not be accepted. Hose and nozzles shall comply with NFPA Standard
No. 17A for Wet Chemical Extinguishing Systems and shall have been investigated
by Underwriters Laboratories, Inc. (U.L.) and listed for this service.
APPLIANCE NOZZLES:
Wet System:
Appliance nozzles shall be constructed of brass. Appliance nozzles with painted
surfaces shall not be accepted. Appliance nozzles shall not extend below the
lowest component of the range hood. Design shall provide equal distribution of
chemical agent and allow chemical to flow effectively with low velocity to
avoid splattering of burning grease.
APPLIANCE SHUT-DOWN DEVICE:
Each system shall
be provided with a listed device to automatically shut-off the gas or electric
supply to surface burners on the kitchen range top upon activation of the alarm
from the fire detection unit via an interconnection cable. The gas or electric
supply shall remain “off” until manually reset. Electrical power cut-off to kitchen
range hood exhaust fan shall not be required for Underwriters Laboratories
Incorporated (U.L.) listed extinguishing systems.
GAS SHUTOFF: Once activated via a low voltage interconnection cable, the gas valve will remain in the closed position and will require manual reset by depressing the reset button located on the top of the gas control box. The gas control box is powered by the 110v outlet behind the range.
ELECTRIC SHUTOFF: Once
activated via a low voltage interconnection cable it will close the
electrical current to the range and must be manually reset. You can reset the
shutoff by either unplugging it from the wall & plugging it back in, or by
resetting the breaker for the range.
OWNER’S MANUAL:
Each system shall
be provided with a comprehensive owner’s manual that shall contain procedures
for post clean-up, parts identification, a complete wiring diagram, system
installation with pictorials for step-by-step procedures, system limitation, and
inspection & maintenance requirements. Re-servicing/recharging procedures
can also be contained in the owner’s manual.
OPTIONAL EQUIPMENT:
MANUAL REMOTE PULL STATION: Device
shall be U.L. Listed or Recognized Component supplied complete with wire leads
and listed with the residential system.
REMOTE AUDIBLE ALARM: Where
a cabinet design or material thickness prohibits the DB (loudness) level from
activating the shut-off a remote 106 DB alarm shall be installed under the
range hood. Only a remote alarm listed and compatible with the central processing
unit control board shall be used.
REMOTE ALARM & STROBE LIGHT COMBINATION: An 110v alarm and strobe light combination is also available to aid in informing other persons, as well as the hearing impaired, that there is a cooking fire.
ALARM INTERFACE ENCLOSURE: When the system needs to be monitored by a building alarm, an alarm interface enclosure may be required for monitoring purposes.
WIRELESS RECEIVER: An optional wireless activated receiver may be installed to make either the gas or electric shutoff wirelessly operated by taking the place of the interconnect cable. All wiring, fittings, and connections shall comply with NFPA Standard 70 and local codes & ordinances. Each electrically or gas supplied kitchen range appliance can be provided with a U.L. Listed wireless receiver. The wireless receiver unit continuously monitors for an alarm from the central processing unit control board. The alarm sounds to activate the sonic shut-off unit. Once activated, all electrical power and gas (when applicable) to the range is shut off, and must be manually reset.
AC/DC WALL PLUG IN POWER SUPPLY: Where
a constant 9 volt power source is required an AC/DC wall plug in transformer
can be supplied. Only a U.L. Listed AC/DC wall plug in power supply that has been
tested and listed with the central processing control board shall be used.