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Hydraulic Calculations shall provide the following: a. Guidelines Support HVLS Fans with Sprinklers | Facility Executive - Creating Intelligent Buildings Based on extensive testing, the National Fire Protection Association’s (NFPA) Research Foundation has established guidelines for the installation and use of HVLS (High Volume Low Speed) fans in buildings with ESFR (Early Suppression Fast Response) automatic sprinklers. Where an HVLS fan(s Revised 10/08/13 Section 407.7 Page 2 of 2 REQUIREMENTS Based upon the identified risks, the Department has determined that: HVLS fans shall be interconnected to a fire alarm system when present. Prior to installing fans, review all codes applicable to sprinkler systems and fans to ensure code compliance (refer to NFPA 13). Both types are typically used in high-storage and warehouse facilities, and need to … Refer to FM Global DS 2-0, “Installation Guidelines for Automatic Sprinklers” or NFPA 13, “Standard for the Installation of Automatic Sprinkler Systems.” Risk Logic, Inc. can help you determine the best approach to shut down HVLS fans as improper shutdown can result in a total loss at your facility. HVLS fans are large fans greater than 6 feet (2.1 m) in diameter that move massive quantities of air at 3 to 5 mph (4.8 to 8.1 kph). 1. Summary Sheet NFPA 13… They are used for moving large amounts of air, and are commonly found in warehouses and similar environments. 7. In accordance with NFPA 13 Standard from the National Fire Prevention Association as referenced in sections 12.1.4 and 11.1.7: High Volume Low Speed (HVLS) Fans: The installation of HVLS fans in buildings equipped with The fans shall be as follows: The fan shall meet the requirements of NFPA 13 (National Fire Code for Sprinklers) in regards to blocking obstructions below sprinkler heads. All HVLS fans shall be interlocked to shut down immediately upon receiving a waterflow signal from the alarm system in accordance with the requirements of NFPA 72. All Rite-Hite HVLS fans have the ability to receive a low voltage stop command from the alarm system, which addresses #4 above. NFPA 13 – Installation of Sprinkler Systems, continues to evolve with the 2013. All HVLS fans shall be interlocked to shut down immediately upon receiving a water flow signal from the alarm system in accordance with the requirements of NFPA 72 The air speed over the sprinklers in this position will be less than 1 meter / sec. Circulating Fans for Rating. The waterflow alarm system shall be in accordance with the requirements of NFPA … The fan shall meet the air velocity requirements of FM B. When installed in accordance with NFPA 13, HVLS fans do not impact the performance of early-suppression, fast-response (ESFR), and control-mode-density-area (CMDA) sprinkler systems. National Fire Protection Association (NFPA) 13 - National Fire Code for Sprinklers. IMPORTANT: All fans must meet NFPA 13 requirements to meet legal requirements when mounting fans. HVLS Fan centered approximately between four adjacent sprinklers. All HVLS fans shall be interlocked to shut down immediately upon receiving a waterfowl signal from the alarm system in accordance with the requirements of NFPA 72. All HVLS fans shall be interlocked to shut down immediately upon receiving a water flow signal from the alarm system in accordance with the requirements of NFPA 72 5. All HVLS fans shall be interlocked to shut down immediately upon receiving a waterflow signal from the alarm system in accordance with the requirements of NFPA 72—National Fire Alarm and Signaling Code. With very low rotational speed, HVLS fans move speed. nfpa 13 2016 11.1.7 * High Volume Low Speed (HVLS) Fans. Where required by NFPA 13, all HVLS fans shall be interlocked to shut down upon activation actuation of a sprinkler waterflow switch that indicates waterflow in the area served by the There must be a 3 foot minimum clearance from the sprinkler deflector Furthermore, the time required to fully stop HVLS fans (i.e., 90 seconds in NFPA 13) adds additional effect to aggravate smoke spread. All HVLS fans shall be interlocked to shut down immediately upon receiving a water flow signal from the alarm system in accordance with the requirements of NFPA 72. Please call EnergyLogic for guidance All Rite-Hite HVLS fans have the ability to receive a low voltage stop command from the alarm system, which addresses #4 above. NFPA Project on HVLS Fans and Sprinkler Systems Wins Research Foundation Medal July 2nd, 2012 Print This Post The 2012 Fire Protection Research Foundation Medal was awarded to the research project on “High Volume/Low Speed Fans and Sprinkler Operation”. Because this airflow can disrupt a heat plume needed to activate sprinklers, NFPA 13 Chapter 19 specifies the location of HVLS fans as approximately centered between 4 adjacent sprinklers and a minimum of 3 feet below the sprinkler deflector. DESIGN APPROACHES – NFPA 13 (2013) 11.1.7* High Volume Low Speed (HVLS) Fans. Unlike standard high-speed fans, HVLS fans move very slowly. D. Fans shall be compliant with NFPA 13 – Standard for the Installation of Sprinkler Systems, NFPA 72 – National Fire Alarm and Signaling Code, and NFPA 70 – National Electrical Code (NEC). Using a 7/8” wrench, fasten top plate of extension to the bottom plate of … NFPA 13 addresses the presence of HVLS-type fans by requiring the shutdown of the fans upon the activation of the sprinkler’s waterflow alarm FM Global currently addresses HVLS fans in a similar Fashion in Data Sheet 2-0 NFPA 13 STANDARDS FOR HVLS FANS Maximum allowable fan diameter of 24 feet. 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