SAFETY PRACTICES AND PRECAUTIONS3CAUTION:For general ventilating use only. DO NOT use to exhaust hazardous orexplosive materials or vapors.WARNING:To reduce the risk of fire, electrical shock, or injury to persons, observe thefollowing :A. Use this unit only in the manner intended by the manufacturer. If you have questions, contactthe manufacturer.B. Before servicing or cleaning the unit, switch power off at service panel and lock service paneldisconnecting means to prevent power from being switched on accidentally. When the servicedisconnecting means cannot be locked, securely fasten a prominent warning device, such as atag, to the service panel.C. Installation work and electrical wiring must be done by qualified person(s) in accordance withall applicable codes & standards, including fire-rated construction.D. Sufficient air is needed to maintain proper combustion and safe exhausting of gases throughthe flue (chimney) of fuel burning equipment to prevent backdrafting. Follow the heatingequipment manufacturers guideline and safety standards such as those published by theNational Fire Protection Association (NFPA), the American Society for Heating, Refrigeration andAir Conditioning Engineers (ASHRAE), and the local code authorities.E. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hiddenutilities.F. Ducted systems must always be vented to the outdoors.CAUTION:To reduce the risk of fire and to properly exhaust air, be sure to duct air tooutside. Do not vent exhaust air into spaces within walls or ceiling, nor intoattics, crawl spaces, or garages.WARNING:To reduce the risk of fire, use only metal duct work.Install this hood in accordance with all requirements specified.WARNING:To reduce the risk of fire or electric shock, do not use this hood with anyexternal solid state speed control device.