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Chamberlain 8155W Owner's Manual
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Chamberlain 8155W Owner's Manual

Wi-fi garage door opener. contractor series belt drive
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Wi-Fi
Garage Door Opener
®
Contractor Series Belt Drive Model 8155W
FOR RESIDENTIAL USE ONLY
LiftMaster
300 Windsor Drive
Oak Brook, IL 60523
• Please read this manual and the safety materials
carefully!
• The door WILL NOT CLOSE unless the Protector
®
System
is connected and properly aligned.
• Periodic checks of the garage door opener are
required to ensure safe operation.
• This garage door opener is ONLY compatible with
®
MyQ
and Security+ 2.0
• DO NOT install on a one-piece door if using devices
or features providing unattended close. Unattended
devices and features are to be used ONLY with
sectional doors.
• Attach warning labels to the location indicated on
label.
Register your garage door opener to receive
updates and offers from LiftMaster
Take a photo of the camera icon
including the points ( ).
Send it in by texting
the photo to 71403 (US)
or visit www.liftmaster.photo (Global)
®
accessories.

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Summary of Contents for Chamberlain 8155W

  • Page 1 Wi-Fi Garage Door Opener ® Contractor Series Belt Drive Model 8155W • Please read this manual and the safety materials FOR RESIDENTIAL USE ONLY carefully! • The door WILL NOT CLOSE unless the Protector ® System is connected and properly aligned.
  • Page 2 Contents Preparation ........3 Assembly .
  • Page 3 ® Serial Number: Product Serial Number: Date of Purchase: ® Serial Number Product Serial Number...
  • Page 4 Check Signal Strength. If you see: Wi-Fi signal is strong. The garage door opener will connect to your Wi-Fi network. Wi-Fi signal is weak. The garage door opener may connect to your Wi-Fi network. If not, try one of the options below to improve the Wi-Fi signal: No Wi-Fi signal.
  • Page 5 5/32 3/16 7/16 5/16 7/16 9/16...
  • Page 6 Provided Not Provided...
  • Page 7 (To motor unit) Spring Trolley Nut Nut ring slot Hex Screws 8 x 3/8" Washered Bolts 5/16"-18 x 1/2" Sprocket (Mounted in Cover the garage door opener) Nut Ring Nut Ring BEFORE AFTER RELEASE 1" 1-1/4" (2.5 cm) (3.18 cm)
  • Page 9 OPTIONAL Unfinished CEILING Ceiling MOUNT FOR HEADER Header Wall BRACKET Vertical Centerline of Garage Door Structural Supports Level (Optional) Header Wall 2" (5 cm) Track Highest Point of Travel Door Sectional door with curved track...
  • Page 10 HARDWARE Lag Screw 5/16"-9x1-5/8" Header (Finished Ceiling) Bracket Ceiling Mounting Holes 6" (15 cm) Maximum Door Spring Vertical Centerline of Garage Door Lag Screw 5/16"-9 x 1-5/8" (Header Wall) Vertical Centerline of (Header Wall) Wall Mount (Garage Door) Garage Door 2x4 Structural Header Support...
  • Page 11 HARDWARE Clevis Pin 5/16" x 2-3/4" Ring Fastener Ring Fastener Clevis Pin 5/16" X 2-3/4" Connected Disconnected...
  • Page 12 HARDWARE Lock Washer 5/16" Hex Bolt 5/16"- 18x7/8" Nut 5/16"-18 FIGURE 2 FIGURE 1 Unfinished Ceiling Finished Ceiling Not Provided (Not Provided) FIGURE 3 Lag Screws 5/16"- 18x1-7/8" Measure Distance Hex Bolt 5/16"- 18x7/8", Lock Washer 5/16", Nut 5/16"-18...
  • Page 13 100 Watt (Max) Standard Light Bulb Release Tab Trolley Release Arm Lens Hinge...
  • Page 14 HARDWARE Self-Threading Screw 1/4"-14 x 5/8" FIGURE 2 FIGURE 1 Vertical Reinforcement Vertical Reinforcement Vertical Centerline Vertical Centerline of Garage Door of Garage Door Bolt 5/16"-18 x 2" (Not provided) Door Bracket Door Bracket Lock Washer 5/16" Self-Threading Screw Nut 5/16"-18 1/4"-14 x 5/8"...
  • Page 15 HARDWARE Clevis Pin 5/16" x 1-1/4" Hex Bolt 5/16"-18 x 7/8" Lock Washer 5/16" Clevis Pin 5/16" x 1" Ring Fastener Nut 5/16"-18 CORRECT INCORRECT Straight Straight Curved Door Arm Door Curved Door (Groove Door facing out) Ring Fastener Nut 5/16"-18 Clevis Pin 5/16"...
  • Page 16 Wall 7/16" (11 mm) GANG BOX DRYWALL Drywall Anchor 6-32 x 1" 6AB x 1" DRYWALL Drywall Anchor GANG BOX 6AB x 1" 6-32 x 1" HARDWARE Screw Screw 6AB x 1" (2) 6-32 x 1" (2) Drywall Anchors (2)
  • Page 17 7/16" (11 mm) Staple...
  • Page 18 Safety Reversing Sensor Safety Reversing Sensor 6" (15 cm) max. above floor 6" (15 cm) max. above floor Invisible Light Beam Protection Area...
  • Page 19 HARDWARE Carriage Bolt Wing Nut 1/4"-20 x 1/2" 1/4"-20 (Not provided) (Not provided) No more than 6 inches (15 cm) No more than 6 inches Wing Nut (15 cm) Carriage Bolt Wing Nut 1/4"-20 1/4"-20 x 1/2" 1/4"-20 Carriage Bolt Lens 1/4"-20 x 1/2"...
  • Page 20 (Not provided) Staple 7/16" (11 mm) Wing Nut 1/4"-20 Carriage Bolt 1/4"-20 x 1/2"...
  • Page 21 Pre-installed Safety reversing wires 7/16" sensor wires (11 mm) Not Provided Safety reversing Pre-installed wires sensor wires Yellow (for example) White Purple (for example) White/Black Yellow Purple (for example) (for example) Yellow Purple 7/16" (11 mm) To insert or remove the wires from the terminal, push in the tab with a screwdriver tip.

  • Page 22: Typical Wiring

    TYPICAL WIRING PERMANENT WIRING Ground Tab Green Black Ground Screw Wire Ground Wire Black White Wire Wire...
  • Page 23 If the receiving sensor is in direct sunlight, switch it with sending sensor so it is on the opposite side of the door. (invisible light beam) Green LED Amber LED SENDING SENSOR RECEIVING SENSOR...
  • Page 24 PROGRAMMING BUTTONS UP Button Adjustment Button DOWN Button DOWN (Close) UP (Open)
  • Page 25 PROGRAMMING BUTTONS UP Button Adjustment Button DOWN Button...
  • Page 29 Learn Button An LED on the garage door opener will indicate Wi-Fi status. See table below. Learn Button Command...

  • Page 30: Service Led

    Push Bar SERVICE LED LEARN Button LOCK Button COMMAND LED LIGHT Button...
  • Page 31 Command LED Command LED LOCK Button LIGHT Button LOCK Button Service LEARN Button LIGHT Button...
  • Page 32 LEARN Button LEARN LED LEARN button Command LED LEARN Button Black Adjustment Button...
  • Page 37 Accessories 829LM Garage and Gate Monitor: 893MAX 3-Button MAX Remote 880LMW Smart Control Panel ® 823LM Remote Light Switch: Control: Monitor open/closed status Displays temperature, time Automatically control your for up to 4 MyQ ® compatible Compatible with LiftMaster ® and system diagnostics;...

  • Page 39: Garage Door Opener Safety - An Automatic Decision

    Automatic Garage Door Opener Safety & Maintenance Guide Garage Door Opener Safety – An Automatic Decision A garage door is the largest moving object in the home. An improperly adjusted garage door and opener can exert deadly force when the door closes – which could lead to entrapment of children or adults and subsequent injury or death.

  • Page 40: Routine Maintenance Can Prevent Tragedies

    Routine Maintenance Can Prevent Tragedies Make monthly inspection and testing of your garage door and opener system a part of your regular routine. Review your owner’s manual for both the door and door opener. If you don’t have the owner’s manuals, contact the manufacturer(s) and request a copy for your specifi...

  • Page 41: Installation Parts

    Repair Parts Rail Assembly Parts Installation Parts Description Part Number Description Part Number Master link kit 4A1008 3V CR2032 Lithium battery 10A20 Belt pulley bracket 41B5424 Remote control visor clip 29B137 Complete trolley assembly 041B3869-3A Emergency release rope and 41A2828 (includes: Threaded Shaft, handle assembly Tensioner Assembly, Master...
  • Page 42 Repair Parts Garage Door Opener Parts Description Part Number Sprocket cover 41A4371 Gear and sprocket 41A4885-4 Drive and Worm Gear 41A2817 Front end panel with all labels 041A8393 Light socket 041C0279 Light lens 108D79 Capacitor 030B0532-1 Capacitor bracket 12A373 Universal motor 041D7440 Travel module 041D7742-7...