NuTone 745BNNT Instructions Manual

Contents

NuTone 745BNNT Instructions Manual Manual pdf 2 page image

Page 2MODEL 745BNNT3. Set housingaside and drivenails partiallyinto joist at thetop of both key-hole marks.4. Hang housing fromnails and poundnails tight. To en-sure a noise-freemount, pound an-other nail throughthe top hole of eachmounting tab.Existing Construction2. In attic, position mounting brackets against joist. Traceoutline of housing on ceiling material.1. Choose the location for your fan/light in the ceiling. For bestpossible performance, use the shortest possible duct runand a minimum number of elbows.3. Set housing aside and cut ceiling opening slightly largerthan marked.INSTALL THE HOUSING1. Choose the location for your fan in the ceiling. For bestpossible performance, use the shortest possible duct runand a minimum number of elbows.2. Position mounting brackets against joist so that bottomedge of housing will be flush with finished ceiling.Additional positioning feature for 5/8”, 1”, &1-1/4” thick ceiling material:Holes in corners of housing are labeled with variousceiling material thicknesses. Position housing sobottom edge of joist is visible through a matchedset of holes. The housing is now in the properposition for that ceiling material thickness.Additional positioning feature for 1/2” thickceiling material:Bend two tabs, on side of housing, 900 outward. Lifthousing until tabs contact underside of joist.Mark the keyhole slot on both mounting brackets.New Construction5/811-1/4TABHOLESBOTTOM EDGE OF JOIST- PLEASE NOTE -THE FOLLOWING INSTALLATION ILLUSTRATIONS SHOW 2 X6 JOISTS. IF YOU HAVE A TRUSS OR “I”-JOIST INSTALLATION,MOUNT THE VENTILATOR TO THE ADDITIONAL FRAMING INTHE SAME MANNER. (Additional framing must be a 2x6 (mini-mum height), at least 9-inches long.)4. Place housing in opening so that its bottom edge is flushwith finished ceiling. Nail to joist through keyhole on bothsides. To ensure a noise-free installation, drive another nailthrough the top hole of each mounting bracket.5. Additional mounting holes are provided for installationswhere access from above is inconvenient or not possible.Nail or screw housing directly to joists or framing.ADDITIONALMOUNTINGHOLES