CaptiveAire PIRANHA User Manual
FEATURES
• UL and ULC Listed – Meets Requirements
of UL 300
• Overlapping Appliance Protection
• Two Nozzle Styles Cover All Hazards
• Dual Agent
• Rapid Flame Knockdown
• New Proprietary Agent With Increased
Performance
• Fifteen Times Faster Than Existing Agents
in Reducing the Temperature of the Grease
Below the Reflash Point
• Reliable Cartridge Operated
• Aesthetically Appealing
APPLICATION
The PIRANHA™Restaurant Fire
Suppression System is an automatic, preengineered, fixed, fire suppression system
designed to protect the following areas associated with cooking equipment; ventilating
equipment including hoods, ducts, plenums,
and filters; fryers; griddles and range tops;
upright, natural charcoal, or chain-type broilers; Electric, lava rock, mesquite or gas-radiant char-broilers and woks.
The system is ideally suitable for use in
restaurants, hospitals, nursing homes, hotels,
schools, airports, and other similar facilities.
Use of the PIRANHA Restaurant system is
limited to interior applications only. The regulated release and tank assemblies must be
mounted in an area where the air temperature will not fall below 32 °F (0 °C) or exceed
130 °F (54 °C). The system must be
designed and installed within the guidelines
of the UL Listed Design, Installation,
Recharge, and Maintenance Manual.
SYSTEM DESCRIPTION
The PIRANHA Restaurant Wet Agent Fire
Suppression system is a dual-agent, preengineered, fixed, automatic fire extinguishing system developed specifically for
improved fire protection of commercial
restaurant cooking appliances, exhaust
hoods and ducts.
The PIRANHA system is available in 3 sizes:
• PIRANHA-7 (1.5 gallon, 7 nozzle capacity)
• PIRANHA-10 (2.25 gallon, 10 nozzle
capacity)
• PIRANHA-13 (3.0 gallon, 13 nozzle
capacity)
When actuated, the system discharges a
fixed amount of proprietary wet chemical
agent followed by water through the same
nozzles. Water is provided by a connection
to the potable water supply. Advantages of
RESTAURANT
FIRE
SUPPRESSION
SYSTEMS
DATA SHEET
the dual system over single wet agent systems include: (1) more robust suppression of
hostile fires in protected restaurant hazards;
(2) greater hazard area protection with less
wet agent; (3) faster flame extinguishment
and securement of hot fuels such as cooking
shortening; (4) overlapping protection of
cooking appliances from fixed nozzle spacings, allowing appliances to be interchanged
freely without changing nozzles; (5) more
rapid cooling of hot fuels and appliances to
prevent reignition; (6) simplicity of design and
installation.
The addition of the water discharge significantly aids in increasing and prolonging the
foam blanket generated by the wet chemical
agent. The longer retention of the foam blanket allows the hot grease to cool well below
the auto-ignition temperature.
Patents are pending for both the new proprietary wet chemical agent and the dual agent
system itself.
The water spray portion of the system is provided by a connection to the potable water
supply.
The system design for appliance protection
under the hood allows the nozzles to be
positioned uniformly from one end of the
appliance line to the other. Most appliances
under the hood can be protected in this overlapping manner, therefore, it is not necessary
to protect each appliance individually.
Appliances are free to be shifted around
under the hood. The only exception to this
overlapping type coverage are upright broilers, salamanders, and chain broilers.
These type appliances requires dedicated
nozzle protection.
The system is capable of automatic detection
and actuation and/or remote manual actuation. Additional equipment is available for
mechanical or electrical gas line shut-off
applications.
The detection portion of the fire suppression
system allows for automatic detection by
means of specific alloy rated fusible link
detectors, which, when the temperature
exceeds the rating of the link, the link
separates, allowing the regulated release
to actuate.
A system owner’s guide is available containing basic information pertaining to system
operation and maintenance. A detailed technical manual is also available including
system description, design, installation,
recharge, and maintenance procedures, plus
additional equipment installation and
resetting instructions.
The system is installed and serviced by
authorized distributors that are trained by the
manufacturer.
ANSUL
®
001551
The tank includes an adaptor/tube assembly.
The adaptor is chrome-plated steel with
1/4 in. NPT female low pressure gas inlet
port and a 3/8 in. NPT female agent outlet
port. The adaptor also contains a bursting
disc seal which prevents the siphoning of
agent up the pipe during extreme temperature variations.
Connected to the adaptor/tube assembly is
the water flow valve. This valve is designed
to allow the wet chemical agent to flow first
and then the valve will automatically switch
internally to allow the water to start flowing,
thus increasing the foam blanket and
providing additional cooling.
Regulated Release Mechanism – The regulated release mechanism is a spring-loaded,
mechanical/pneumatic type capable of providing the expellant gas supply to the agent
tank. It contains a factory installed regulator
deadset at 150 psi (10.3 bar) with an internal
relief of approximately 190 psi (13.1 bar). It
has automatic actuation capabilities by a
fusible link detection system and remote
manual actuation by a mechanical pull
station.
The regulated release mechanism contains a
release assembly, regulator, and expellant
gas hose in a stainless steel enclosure with
cover. The enclosure contains knock-outs for
1/2 in. conduit. The cover contains an opening for a visual status indicator.
The regulated release assembly also contains an anti-siphon valve which is designed
to prevent back-siphonage of possible contaminated water into a potable water supply.
It is compatible with mechanical gas shut-off
devices; or, when equipped with a field or
factory installed switch, it is compatible with
electric gas line or appliance shut-off
devices.
The basic system consists of an ANSUL
AUTOMAN regulated release assembly
which includes a regulated release mechanism and a wet chemical storage tank
housed within a single enclosure. The tank
valve is designed to allow the wet chemical
agent to discharge onto the hazard area first.
Then, immediately following the agent discharge, the valve will automatically allow the
water to flow through the piping and out the
system nozzles. Nozzle blow-off caps, detectors, cartridges, agent, fusible links, and pulley elbows are supplied in separate packages in the quantities needed for the fire
suppression system arrangement.
Additional equipment includes remote manual pull station, mechanical and electrical gas
valves, pressure switches, and electrical
switches for automatic equipment and gas
line shut-off. Accessories can be added such
as warning lights, etc., to installation where
required.
The water supply piping includes a lockable
valve.
Each tank is limited to a listed maximum
number of nozzles.
COMPONENT DESCRIPTION
Wet Chemical Agent – The PRXTM extin-
guishing agent is a specially-formulated,
aqueous solution of inorganic salts designed
for rapid flame knockdown and foam securement of grease related fires. It is available in
5.0 gallon (18.9 L) plastic containers with
instructions for wet chemical handling and
usage.
Agent Tank – The agent tank is installed in
a stainless steel enclosure. The tank is deep
drawn carbon steel finished in red enamel.
Tanks are available in three (3) sizes:
PIRANHA-7: 1.5 gallon (5.7 L) capacity
PIRANHA-10: 2.25 gallon (8.5 L) capacity
PIRANHA-13: 3.0 gallon (11.4 L) capacity
The tanks have a working pressure of 150
psi (10.3 bar), a test pressure of 450 psi
(31.0 bar), and a minimum burst pressure of
900 psi (62.1 bar).
Discharge Nozzles – Two types of
discharge nozzles are tested and listed with
the PIRANHA system for all applications.
One type is used for all high proximity appliance and plenum protection and is stamped
“AP,” and the other type is used for all duct
protection and low proximity appliance protection and is stamped “DL.” Each nozzle
must have a metal or rubber blow-off cap to
keep the nozzle tip orifice free of cooking
grease build-up.
Water Shutdown Device – The water shutdown device is an optional component which
can be field installed in the Ansul AUTOMAN
release. With the device installed, the water
flow to the discharge nozzles will automatically shutdown approximately 10 minutes
after system actuation.
CODES AND STANDARDS
The PIRANHA hybrid wet agent system and
its components meet the following codes,
standards and recommended practices:
1. Underwriters Laboratories, Inc. (UL):
Standard 300 – Fire Testing of Fire
Extinguishing Systems for Protection of
Restaurant Cooking Areas.
2. Underwriters Laboratories, Inc. (UL):
Standard 2092 – Pre-Engineered Wet
Chemical Extinguishing Units.
3. Underwriters Laboratory of Canada (ULC):
Standard ORD-C1254.6 – Pre-Engineered
Wet Chemical Extinguishing System Units.
4. National Fire Protection Association
(NFPA): Standard 17A – Wet Chemical
Extinguishing Systems.
5. National Fire Protection Association
(NFPA): Standard 96 – Ventilation Control
and Fire Protection of Commercial
Cooking Operations.
6. American Society of Sanitary Engineers
(ASSE): Standard 1001 – Cross
Connection Protection Devices:
Guidelines for Selection of the Proper
Type of Backflow Preventor – Piped
Applied Atmospheric Vacuum Breakers.
7. International Association of Plumbing and
Mechanical Officials (IAPMO): Installation,
Material and Property Standard PS 108-98
– Grease Fire Suppression Systems.
ORDERING INFORMATION
Order all system components through your
local authorized Ansul Distributor.
002730
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