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Kidde Wet Chemical Fire Suppression System Design, Installation, Operation, and Maintenance Manual

Kidde Wet Chemical Fire Suppression System Design, Installation, Operation, and Maintenance Manual

The Kidde® WHDR™ Wet Chemical Fire Suppression System Design, Installation, Operation, and Maintenance Manual provides fire protection for commercial kitchen applications such as appliances and ventilation.  The Wet Chemical system holds UL and ULC listings as a pre-engineered system.Systems shall be designed and implemented according to the following:

  • NFPA Standard 17A, “Standard for Wet Chemical Systems”,
  • NFPA Standard 96, “Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations”,
  • Other applicable NFPA standards as required for a particular application and design, including, but not limited to, NFPA 70
  • (NEC) and NFPA 72, Fire Alarm Standard, and CSA.
  • This Design, Installation, Operation, and Maintenance Manual (DIOM).
  • Any other standards enforced by a local Authority Having Jurisdiction (AHJ).

Configurations in Chapter 3, System Design, are tested and listed to Underwriters Laboratories (UL) Standard 300, 1996 Edition, unless otherwise noted, and ULC ORD 1254.6.

Kidde Wet Chemical Fire Suppression System Design, Installation, Operation, and Maintenance Manual Content

  • GENERAL INFORMATIONWet Chemical Fire Suppression System Design
  • COMPONENT DESCRIPTION
  • SYSTEM DESIGN
  • INSTALLATION
  • MAINTENANCE
  • PARTS LIST
  • APPENDIX A ELECTRICAL DETECTION INSTALLATION (DETECT-A-FIRE®)

The Kidde Wet Chemical System consists of a supply of wet chemical stored in one or more Cylinder and Valve Assemblies. Each cylinder is pressure activated by a System Valve Actuator.The system actuated either automatically and/or manually, using mechanical, electrical, or pressure actuation devices. Upon actuation, the wet chemical discharged through agent distribution piping and specially designed nozzles positioned throughout the protected area.

APPLICATIONS AND LIMITATIONS OF WET CHEMICALS

The Kidde system uses a liquid chemical called Aqueous Potassium Carbonate (APC) as its agent. APC, a solution of potassium carbonate in water, suppresses fires through a process involving the:

  • Saponification of surface grease (turning it into combustion-resistant soap),
  • Cooling effects of water vaporization,
  • Inerting effects of resultant steam formation, and
  • Interruption of the chemical chain reaction of combustion.

Hazards and equipment that protected using wet chemical extinguishing systems include the following:

  • Restaurant, commercial, and institutional hoods
  • Plenums, ducts, and filters with their associated cooking appliances
  • Special grease removal devices

The wet chemicals used in the Kidde Wet Chemical System are stable at both low and high temperatures. The upper storage temperature limit for the system is 120°F (49°C). The lower temperature limit is 0°F (-18°C).

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Kidde Wet Chemical Fire Suppression System Design, Installation, Operation, and Maintenance Manual

 

Kidde Wet Chemical

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