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When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel. 5. Home Ventilating Institute (HVI) recommends one square foot of open air inlet per 300 cfm of fan capacity. The best location for these air intake vents are under the eaves with direct access to the attic. Failure to provide these intakes could cause natural-draft gas appliances to backdraft. 6. Your attic fan installation will create a screened opening into your attic space. During a heavy rain storm there could be a light spray of rain into this attic space. This is a normal condition with all attic ventilators and will not cause any damage to the structure. We recommend that you do not store any valuable articles directly under the fan opening in the roof. During extreme rain and wind storms you may want to turn on your attic ventilator to prevent excess moisture accumulation in your attic. 7. Records show, under ideal conditions, exposed galvanized steel can remain rust free up to 100 years. For best protection, the exposed portion of the roof sheet should be painted, especially in areas of unusually high industrial air pollution. Follow paint manufacturer's instructions for good adhesion. 8. This ventilator is intended for roof installation. The Broan Model 353 Gable Mount Ventilator is available for side wall applications. 9. The dome may be painted with a high-quality paint. Follow the paint manufacturer's recommendations for PVC plastic or aluminum, as appropriate. 10. Please read specification label on product for further information and requirements. TOOLS AND MATERIALS REQUIRED n ¡Slotted Screwdriver n Pencil n [Drill n Utility Knife n 1/4" Drill Bit n Pry Bar (to remover roofing nails) n Sabre Saw or Keyhole Saw n Roofing Cement n Hammer n Galvanized Roofing Nails (1%" min.) n Ruler n Electrical Supplies (to comply with codes) BROAN MODELS 350 • 350BK • 350BR • 355 • 355BK • 355BR 356 • 356BK • 356BR • 358 1. Locate the ventilator at the center of the rear slope of the roof. Place it as high on the roof as possible. The location should be free of obstacles (T.V. leads, electrical lines, etc.) If the ventilator top is level with the roof peak, it can't be seen from the street. Keep this approximate location in mind as you work from within the attic. Page 2 5. Push a large nail through the center of the cardboard template and into the guide hole. Using the large half of the template, draw a 171/2" diameter circle on the shingles. MODELS 350 • 350BK • 350BR • 355 • 355BK • 355BR %0 ■ 111 356 • 356BK• 356BR • 358 Page 3 10. For proper removal of roofing nails, draw a 22" square, 7 Replace template over guide hole and draw a 14-3/8 centered around the hole. Remove nails holding shingles diameter circle on the black paper or roof boards using down from top two-thirds of square. the smaller half of the template. 8. Drill a large starting hole for the sabre saw just inside of the ...

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