Genie ChainLift 800 Owner's Manual - Page 12

2 OPENER INSTALLATION HEADER AND DOOR MOUNTING BRACKETS: WARNING Header bracket must be fastened to garage framing. Do NOT fasten to drywall, particle board, plaster or other such materials. 1. Finding header bracket mounting location. • Close garage door. - Use a pencil and level. a) Mark center of garage door (one-half overall width) on the wall with 6" vertical line at top edge of door. b) Continue this line on wall above door for about 12" (Fig. 2-1, a). • Raise garage door until top edge of door reaches its maximum height (Fig. 2-2). • With door at highest point. - Measure height from top edge of door to floor (Fig. 2-2). • Close door again. • Mark height measurement on wall above door (Fig. 2-1, c). - Make your mark across vertical line made earlier. • Add 2-1/2" to height mark just made on wall. This is location for header bracket (Fig. 2-1, d). FOR HELP-1.800.354.3643 OR WWW.GENIECOMPANY.COM b) - extend vertical line 2-1/2" c) - door at highest point d) - final height mark top of door in closed position FIG. 2-1 Final height mark. a) - 6" vertical line 2-1/2" HIGHEST POINT OF TRAVEL HEADER TRACK WARNING Door springs are under high tension. If spring or its shaft is in the way, measure 2-1/2" above spring or shaft on the garage door centerline and mark this height as your location for header bracket. Do NOT move door spring! NOTE: If header bracket location needs to be above header for garage door opening, you need to add a "mounting surface." A 2" x 6" board securely attached (board and fasteners not included) to wall studs on either side of your mark is sufficient (Fig. 2-3). SECTIONAL DOOR FROM HERE TO FLOOR HEADER HIGHEST POINT OF TRAVEL SECTIONAL DOOR FROM HERE TO FLOOR TRACK FIG. 2-2 Finding highest point of travel. NOTE: For header bracket and bolts locate Bag 2 from Box 1. NOTE: The bolts supplied in Bag 2 are designed to be used on pressure treated lumber. 2. Mounting the header bracket. • Hold header bracket against wall (Fig. 2-3). • Position bracket as shown. - Place center on vertical line, - Bottom edge on final height line. • Mark screw hole locations on wall. • Drill 3/16" pilot holes at each screw hole mark. - Fasten header bracket with 2 lag screws (provided) (Fig. 2-3). final height mark 2-1/2" door at highest point finaml haerkight door at highest point FIG. 2-3 Header bracket mounting (on header & above header). 12 PN# 37026500123 05/15/2009