Chamberlain HD520EV User Manual

12
Installation
STEP 2 Install the header bracket
You can attach the header bracket either to the wall above the garage door, or to the ceiling. Follow the
instructions which will work bestfor your particular requirements.Do notinstall the header bracketover
drywall. Ifinstalling into masonry,use concrete anchors(not provided).
HARDWARE
Lag Screw 5/16"-9x1-5/8"
OPTION A WALL INSTALLATION
1. Center the bracket on the vertical centerline with the bottom edge of the bracket on the horizontal
line as shown (with the arrow pointing toward the ceiling).
2. Mark the vertical set of bracket holes. Drill 3/16" pilot holes and fasten the bracket securely to a
structural support with the hardware provided.
UP
Wall Mount
Optional Mounting
Holes
Vertical
Centerline of
Garage Door
(Header Wall)
Header
Bracket
2x4 Structural
Support
Door Spring
(Garage Door)
Highest Point
of Garage
Door Travel
Horizontal
Line
Lag Screw
5/16"-9x1-5/8"
OPTION B CEILING INSTALLATION
1. Extend the vertical centerline onto the ceiling as shown.
2. Center the bracket on the vertical mark,no more than 6" (15cm) from the wall. Make sure the
arrow is pointing away from the wall.The bracket can be mounted flush againstthe ceiling when
clearance is minimal.
3. Mark the side holes.Drill 3/16" pilot holes and fasten bracket securely to a structural supportwith
the hardware provided.
UP
(Header Wall)
Ceiling
Mounting
Holes
(Finished Ceiling)
Vertical
Centerline of
Garage Door
Header
Bracket
6" (15 cm)
Maximum
Door Spring
(Garage Door)
Lag Screw
5/16"-9x1-5/8"

Chamberlain HD520EV Specifications

General

Brand	Chamberlain
Model	HD520EV
Category	Garage Door Opener
Language	English