LiftMaster 3850 3850 Elite Series Manual - Page 13

INSTALLATION STEP 6 Install the Smart Control Panel® Locate door control within sight of door, at a minimum height of 5 feet (1.5 m) where small children cannot reach, away from moving parts of door and door hardware. If installing into drywall, drill 5/32" holes and use the anchors provided. For pre-wired installations (as in new home construction), it may be mounted to a single gang box (Figure 1). NOTE: The functional temperature range of the door control is between -4° F (-20° C) and 122° F (50° C). Scroll speed of display is slower at lower temperatures although the door control remains fully functional. CAUTION: Continuous exposure of the door control to temperatures below -22° F (-30° C) may damage the LCD screen. SPECIAL NOTE: Only one 398LM can be connected to each garage door opener. If additional wall controls are desired to operate the same garage door opener, it is recommended to use model 378LM wireless wall control as the secondary door control. 1. Strip 7/16" (11 mm) of insulation from one end of bell wire and connect to the two screw terminals on back of door control by color: white wire to the W (2) and white/red wire to the R (1) (Figure 2). 2. Remove push bar cover by gently prying at the lower/middle portion of the cover with a small flat-head screwdriver (Figure 1). Fasten with 6AB x 1-1/4" self-tapping screws (drywall installation) or 6-32 x 1" machine screws (into gang box) as follows: • Install bottom screw, allowing 1/8" (3 mm) to protrude above wall surface. • Position bottom of door control on screw head and slide down to secure. Adjust screw for snug fit. • Drill and install top screw with care to avoid cracking plastic housing. DO NOT overtighten. • Replace cover by inserting top tabs first and then snap cover in place (Figure 1). 3. (For standard installations ONLY) Run bell wire up wall and across ceiling to motor unit. Use insulated staples to secure wire in several places. DO NOT pierce wire with a staple, creating a short or open circuit. 4. Strip 7/16" (11 mm) of insulation from end of bell wire. Connect bell wire to the quick-connect terminals on the motor unit: white to white and white/red to red (Figure 2). NOTE: If you have any trouble with the operation of the buttons, loosen the top mounting screw. DO NOT connect power and operate the opener at this time. The trolley will travel to the full open position but will not return to the close position until the sensor beam is connected and properly aligned. To prevent possible SERIOUS INJURY or DEATH from electrocution: • Be sure power is not connected BEFORE installing door control. • Connect ONLY to 24 VOLT low voltage wires. To prevent possible SERIOUS INJURY or DEATH from a closing garage door: • Install door control within sight of garage door, out of reach of children at a minimum height of 5 feet (1.5 m) and away from ALL moving parts of door. • NEVER permit children to operate or play with door control push buttons or remote controls. • Activate door ONLY when it can be seen clearly, is properly adjusted and there are no obstructions to door travel. • ALWAYS keep garage door in sight until completely closed. NEVER permit anyone to cross path of closing garage door. HARDWARE SHOWN ACTUAL SIZE Screw 6ABx1-1/4" (standard installation) Insulated Staples Screw 6-32x1" (pre-wired) Drywall Anchors Figure 1 REMOVE COVER REPLACE COVER To Replace Insert Top Tabs First PRE-WIRED INSTALLATION LOCK LIGHT LOCK LIGHT Push Bar Cover LOCK LIGHT 24 Volt Bell Wire Figure 2 2-Conductor Bell Wire Push Bar Quick-Connect Terminals Quick-Connect Terminals R W 1 2 (BACK VIEW) Door Control Terminal Screws LOCK LOCK Lock Button Light Button DoDooroCroCnotnrotrlol CoCnonnenceticotniosns StriSptwripirew7ir/e167"/1(61"1 mm) 7/167"/(1161" (m11mm) m) To insTeortreolrearseeleaosreinwsierret,wpiurseh, in tabpwusithhisnctraebwwdritivher tip screwdriver tip Antenna Red White Grey Red White Grey 13