6500 EVERGREEN WAY SPECIAL INTEREST AUTOBODY 2019-01-31

4 / • Chapter 3—System Design te'g-T - REV.3 CHAPTER III SYSTEM DESIGN General Designing the Proper Type of System PYRO-CHEM Industrial Vehicle Paint Spray Booth Fire Suppression System has been designed and tested for use It is necessary for the system designer to consider the in commercial vehicle paint spray booth applications.The physical characteristics and layout of the hazard area to guidelines listed in this chapter deal with the limitations and ensure proper protection.The hazard area must meet the parameters of various system configurations. It is the criteria for a particular system for that system to be effec- responsibility of the Certified installer to ensure that the tive. Each nozzle is tested and designed to protect a certain proper system design is being utilized, and that the system part of the total hazard area. meets the limitations and parameters listed in this chapter. Before attempting to design any system, it is necessary to In order to comply with the approval requirements of UL attend a Factory Certification Training Class and become 1254 Standard, when protecting a Vehicle Paint Spray Certified to install PYRO-CHEM Industrial Vehicle Paint Booth, no unclosable openings are allowed. Spray Booth Fire Suppression Systems. The system must also contain a discharge time delay. Choosing the Proper Agent The ventilation system must be shut down before the It is necessary for the system designer to consider the com- discharge of the system. bustible material found in the hazard area to ensure proper protection.The agent used in the system must be approved for the hazard class of the combustible material.The follow Total Flooding ing are the hazard classes: a. Cylinders: "A"Class—Ordinary solid carbonaceous combustibles. The Models PCI-15ABC, PCI-17ABC, PCI-25sABC, PCI- These include wood, paper, cloth, fiberglass, and plastics 35ABC, and PCI-70ABC cylinders can be used for total ( flooding vehicle paint spray booth applications. _€ "B"Class—Flammable liquids and gases.These include paints, solvents, gasoline, oils, and hydraulic fluids. b. Nozzles: "C"Class— Electrical appliances.These include comput- 'Seven nozzles are available for use in protecting vehicle ers, power generators, and power transformers. paint spray booths: "D"Class—Combustible metals such as sodium, potassi- Nozzle Application urn, magnesium, titanium, and zirconium.The PYRO-CHEM NV WA Work Area/Plenum/Pit (Overhead Position) Industrial Vehicle Paint Spray Booth Fire Suppression NV-SW Work Area/Plenum/Pit(Sidewall Position) System is not intended to protect Class D hazards. NV-P1 Backdraft/Pit (Overhead Position) The following guidelines should be used for determining the NV-UF Under Floor (Overhead Position) NV-DP2 Pit/Duct(End Position—Horizontal) proper agent: N-DCT Duct Only" ABC(monoammonium phosphate-based)—for use with o•N-PLU Three-Way Nozzle (Pits, Plenums, Under Floor Trenches) all "A,""B,"and"C"Class hazards. "Can be used with PCI-15ABC and PCI-25sABC cylinders only As per NFPA 17, pre-engineered dry chemical systems are not approved for deep-seated or burrowing fires (such as c. Temperature Range: ordinary combustibles where the agent cannot reach the The operating temperature range for vehicle paint booth • point of combustion), or on chemicals that contain their own applications is 32 °F.to 120 °F. (0 °C.to 48 °C.). oxygen supply (such as cellulose nitrate). Do not mix differ- ent types of agents, or agents from different manufacturers. d. Piping Requirements: Chemical reactions may occur when incompatible chemicals Piping diagrams include limitations on pipe length and fit- are mixed. Keep in mind that the agent must be accept- tings.See the following pages for specific piping design and able to the Authority Having Jurisdiction. limitations for each size cylinder. i ULEX 3437 CEx732 September 1, 2006