General

The Kitchen Knight II Restaurant Kitchen Fire Suppression System is a pre-engineered solution to appliance ventilating hood and duct grease fires. The system is designed to maximize hazard protection, reliability, and installation efficiency. Automatic or manual system actuation 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 Restaurant Kitchen Fire Suppression System has been designed for protecting kitchen hood, plenum, exhaust duct, grease filters, and cooking appliances (such as fryers, griddles, rangetops, upright broilers, charbroilers and woks) 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 pressurised 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 provides 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.

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 links 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 – 3.0,4.6 and 6.0 gallon size provide 10, 15, and 20 flow point coverage respectively, offering a broad range of application coverage.
4. NOZZLES – Fixed and swivel head nozzles have been established to relax placement tolerances.
5. REMOTE MANUAL PULL STATION –Simple operating instructions with a double action release avoids careless system discharge – a 150’ wire cable run with 1/16 inch cable and a 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 – Accommodates both series and terminal placement to minimize inventory and simplify ordering – all necessary components included for efficient assembly and installation – a 3500 F fusible links 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 - OF VALVE – Complies with requirements pertaining to the shut- off of fuel as described by NFPA 17A – after regular maintenance /service check can be reset 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 Underwriter Laboratories.
   
   Kitchen Knight II and PYRO-CHEM are registered trademarks of Tyco International.
   
   

   Datasheets

   Kitchen Knight II Datasheet

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