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HVLS fans provide many benefits for employee and customer comfort, but there are also a number of safety recommendations and features to consider when choosing an HVLS fan for a facility. The top priority for all facility managers is safety. It is paramount that they trust the products and procedures they use to maintain their buildings are safe for all employees and customers.
One major concern sometimes raised by building managers and engineers is how an HVLS fans will interact with sprinkler systems, specifically if the large blades of the fan obstruct a sprinkler head.
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Based industry research, National Fire Protection Agency (NFPA) concluded HVLS fans, when installed in accordance with NFPA 13 requirements, do not impact the performance of early suppression, fast response and control mode density area sprinkler systems.
In addition to fan placement among sprinkler heads, one of the requirements is that HVLS fans operate with automatic shutdown, initiated within 90 seconds after sprinklers are operational. The NFPA guidelines base the maximum tested fan diameter on 24 feet (7.3 meters) fans. Other HVLS fans with add-on winglets or performance enhancers that may increase the fan diameter outside of NFPA guidelines should be evaluated individually against NFPA 13.
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Depending on the model of some fans, the fan’s safety cable either wraps around the building structure and the fan frame, or comes out of the top of the fan and wraps around the building structure. The safety cable is an important part of the safety system and acts as a last resort should an earthquake, collision or similar catastrophic event occur.
In addition to the selected mount, to keep fan unit movement to a minimum, four steel aircraft-grade guy wires connect the fan frame to the ceiling. The wires distribute the force of movement into the larger building structure, as opposed to concentrating it on the mounted fan unit.
Safety is a priority. With a combination of intrinsic design and patented features, the best HVLS fans are created with performance and safety in mind.
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