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SECTION IV - SYSTEM DESIGN UL EX. 3470 ULC CEx747 Page 4 -1 10 -1 -02 REV.5 SYSTEM DESIGN ■ GENERAL INFORMATION The Ansul R -102 Restaurant Fire Suppression System may be 1. Nozzles must be located 2 -8 in. (5 -20 cm) into the center of the used on a number of different types of restaurant cooking appli- duct opening, discharging up. See Figure 1. ances and hood and duct configurations. The design information listed in this section deals with the limitations and parameters of this pre- engineered system. Those individuals responsible for the design of the R -102 system must be trained and hold a current Ansul certificate in an R -102 training program. The R -102 and the PIRANHA systems use compatible agents and components, therefore, they may be used together for cooking appliance, hood, and duct protection. The primary ANSUL AUTOMAN Release can be either an R -102 or a PIRANHA ANSUL AUTOMAN Release and can actuate up to two additional R -102 or PIRANHA Regulated Actuators. In systems utilizing a 101 remote release, any combination of the maximum number of re regulated actuators can be used. 2 - 8 IN g IS - 20 rm) • Both systems must actuate simultaneously. • Each system must be designed and installed per its appropri- FIGURE 1 ate manual. • Adjacent appliances requiring protection must be protected 2. In installations where a UL listed damper assembly is with the same type of system, either R -102 or PIRANHA, employed, the duct nozzle can be installed beyond the 8 in. unless the center -to- center spacing between the adjacent (20 cm) maximum, to a point just beyond the damper assem- R -102 and PIRANHA nozzles is no less than 36 inches. bly that will not interfere with the damper. Exceeding the maxi- • When appliances are protected with R -102 nozzles, the hood mum of 8 in. (20 cm) in this way will not void the UL listing of and connecting duct above those appliances cannot be pro- the system. tected with PIRANHA nozzles. 3. Previously listed 3 flow number and 5 flow number duct pro- • Mixing systems in a common plenum is not allowed. tection detailed in earlier published manual. Part No. 418087 - One of the key elements for restaurant fire protection is a correct 06, can also still by utilized. system design. This section is divided into ten sub - sections: Noz- DUCT SIZES UP TO 50 IN. (127 cm) zle Placement Requirements, Tank Quantity Requirements, Actu- PERIMETER/ 16 IN. (41 cm) DIAMETER ation and Expellant Gas Line Requirements, Distribution Piping Requirements, Detection System Requirements, Manual Pull Sta- • One 1100 nozzle (Part No. 430912) = one flow number tion Requirements, Mechanical Gas Valve Requirements, Electri- • 50 in. (127 cm) perimeter maximum cal Gas Valve Requirements, Electrical Switch Requirements, and Pressure Switch Requirements. Each of these sections must be • 16 in. (41 cm) diameter maximum completed before attempting any installation. System design sketches should be made of all aspects of design for reference DUCT SIZES UP TO 100 IN. (254 cm) during installation. PERIMETER/ 32 IN. (81.3 cm) DIAMETER ■ NOZZLE PLACEMENT REQUIREMENTS • One 2W Nozzle (Part No. 419337) = two flow numbers This section gives guidelines for nozzle type, positioning, and • 100 in. (254 cm) perimeter maximum quantity for duct, plenum, and individual appliance protection. This • 32 in. (81.3 cm) diameter maximum section must be completed before determining tank quantity and piping requirements. • A 2WH nozzle (Part No. 78078) must be substituted for a 2W nozzle for any installation using Option 2 of the 1.5 gallon sys- Duct Protection - Single Nozzle tem coverage (duct and plenum protection only). A 2WH nozzle is limited to a maximum of 75 in. (190 cm) perimeter or a maxi - All duct protection is UL listed without limitation of maximum duct mum diameter of 24 in. (61 cm) of coverage. length (unlimited length). This includes all varieties of ductworks both horizontal and vertical including ducts that run at angles to The chart below shows the maximum protection available from the horizontal and ducts with directional bends. each duct nozzle. The R -102 system uses different duct nozzles depending on the Part 3.0 Gallon 1.5 Gallon size of duct being protected. Description No. System System 2W Nozzle 419337 Maximum Maximum 100 in. (254 cm) 100 in. (254 cm) Perimeter Perimeter 1100 Nozzle 430912 Maximum Maximum 50 in. (127 cm) 50 in. (127 cm) Perimeter Perimeter