Chamberlain PD220 Assembly Instructions

11
Installation
STEP 1 Determine the header bracket location
To prevent possible SERIOUS INJURY or DEATH:
l Header bracketMUST be RIGIDLY fastened to structural support on header wall or ceiling,
otherwise garage door might NOT reverse when required. DO NOT install header bracket over
drywall.
l Concrete anchors MUST be used if mounting header bracket or 2x4 into masonry.
l NEVER try to loosen,move or adjust garage door, springs, cables,pulleys,brackets, or their
hardware, ALL of which are under EXTREME tension.
l ALWAYS call a trained door systemstechnician if garage door binds,sticks,or is outof balance.
An unbalanced garage door might NOT reverse when required.
1. Close the door and mark the inside vertical centerline of the garage door.
2. Extend the line onto the header wall above the door.
You can fasten the header bracketwithin 4 feet (1.22 m) of the leftor right of the door center only
if a torsion spring or center bearing plate isin the way; or you can attach it to the ceiling when
clearance is minimal. (Itmay be mounted on the wall upside down if necessary, to gain
approximately 1/2" (1 cm).
If you need to install the header bracket on a 2x4 (on wall or ceiling), use lag screws (not
provided) to securely fasten the 2x4 to structural supports.
3. Open your door to the highestpoint of travel asshown.Draw an intersecting horizontal line on
the header wall 2" (5 cm) above the high point.
NOTE: Ifthe total number of inches exceeds the heightavailable in your garage, use the maximum
height possible, or refer to page 12 for ceiling installation.
Header Wall
Vertical Centerline of Garage Door
2x4
Structural
Supports
Level
(Optional)
Unfinished
Ceiling
2x4
OPTIONAL CEILING MOUNT
FOR HEADER BRACKET
Sectional door with curved track
Header Wall
Track
2" (5 cm)
Highest Point
of Travel
Door

Chamberlain PD220 Specifications

General

Brand	Chamberlain
Model	PD220
Category	Garage Door Opener
Language	English