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ENGINEER AND ARCHITECT SPECIFICATIONS

GENERAL

The Kitchen Knight II Restaurant Kitchen Fire Suppression System is a pre-engineered solution to appliance and ventilating hood and duct grease fires. The system is designed to maximize hazard protection, reliability, and installation efficiency. Automatic or manual system activation releases a throttle discharge of potassium carbonate solution on the protected area in the form of fine droplets to suppress the fire and help prevent reignition after the discharge is complete.

SYSTEM OPERATION

The Kitchen Knight II Restaurant Kitchen Fire Suppression System has been designed for protecting kitchen hood, plenum, exhaust duct, grease filters, and cooking appliances (such as fryers, griddles, range tops, upright broilers, char broilers and works) from grease  fires. The versatile state-of-the-art wet chemical distribution technique, combined with dual, independent activation capability - automatic fusible link or manual release - provides efficient, reliable protection the moment a fire is detected. Once initiated, the pressurized wet chemical extinguishing agent cylinder discharges a potassium carbonate solution through a pre-engineered piping network and out the discharge nozzles. The wet chemical discharge pattern is maintained for a duration of time to ensure suppression and inhibit reignition. Expanded capability remote manual actuation, gas equipment shutdown, and electrical system shutdown. This optional equipment will enhance the basic system functions and be applicable when designing custom configurations to suit a particular customer's needs and/or comply with local codes.

SUGGESTED ARCHITECT'S SPECIFICATIONS

The fire suppression system should be of the stored pressure, wet chemical pre-engineered fixed nozzle type manufactured by Pyro-Chem. A carbon dioxide cartridge is designed in compliance with Military Specification "MIL-C-601G", and shall be used as the pneumatic releasing device for the system. The cartridge shall be an integral part of the control head assembly. The wet chemical storage cylinder shall be D.O.T. - rated for stored pressure of 225 psig. and a pressure gage shall be provided on the cylinder valve for visual inspection. The system shall be capable of automatic and manual actuation. Automatic actuation shall be provided by an appropriate number of fuse link detectors mounted in series on a stainless steel wire input line to the control head. Manual actuation shall be provided by turning a handle on the primary head and/or by an optional remote pull station with a dedicated stainless steel input line to the control head. 

The system shall have been tested to the UL Standard For Fire Extinguishing Systems for Protection of Restaurant Cooking Area, UL300, and Listed by Underwriters Laboratories, Inc. It shall be installed in accordance with the National Fire Protection Association Standard No. 17A Wet Chemical Extinguisher Systems, and No. 96 Standard for the Installation of Equipment for the removal of Smoke and Grease Laden Vapors from Commercial Cooking Equipment, and comply with all local and/or state codes and standards.

FEATURES:

  • UL and ULC Approved.
  • Complies with NFPA Standard 17A and 96.
  • Meets the requirements of the Building Officials and Code Administrators.
  • Approved by the City of New York Material and Equipment Acceptance Division.

TYPICAL INSTALLATION

1. CYLINDER CONTROL UNIT - Integral design requires no separate release pressure cylinder - separate wire cable activation lines for automatic fusible link and optional remote pull station provide an added measure of safety - an easily accessible manual release mechanism which provides an option to the automatic fusible link and, depending on local codes, can be used in place of a remote manual pull station - unique fool proof technique for achieving necessary input wire cable tension.

2. PIPING - Unbalanced piping network simplifies application design and installation - no separate piping to connect system pressure cylinders to extinguishing agent container. Schedule 40 stainless, chrome-plated and black pipe can be used.

3. CYLINDERS (DOT-4BW-225 Rated) - Contain Pyro-Chem Potassium Carbonate Solution stored at 225 psig - pressure gauge for visual maintenance checks - 3.0, 4.6 and 6.0 gallon sizes provide 10, 15, and 20 flow point coverage respectively, offering a broad range of application coverage.

4. NOZZLES - Fixed and Swivel head nozzle have been established to relax placement tolerances.

5. REMOTE MANUAL PULL STATION - Simple operating instructions wit ha double action release avoids careless system discharge - a 150' wire cable run with 1/16 inch cable and 40 corner pulleys maximum - a dedicated wire cable input line to the cylinder control head provides a true back-up in the event fusible links are fouled.

6. FUSIBLE LINK KITS - Accommodation both series and terminal placement to minimize inventory and simply ordering - all necessary components included for efficient assembly and installation - a 350 0F fusible link standard - other temperatures available - 20 fusible links on a 150' wire cable run with 40 corner pulleys maximum provides substantial hazard coverage.

7. AUTOMATIC GAS SHUT-OFF VALVE - Complies with requirements pertaining to the shut-off of fuel as describe by NFPA 17A - after regular maintenance/service check can be rest at control head for convenience of service technician - a 100' wire cable run with 30 corner pulleys maximum provides mounting flexibility.

8. CORNER PULLEYS AND ACCESSORIES - Designed to ensure reliable system function, as tested by Underwriters Laboratories.

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Last modified: October, 2010