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Sectional door installation, One-piece door installation, One-piece door without track installation – Chamberlain 2000SDR 1/2 HP User Manual

Page 5

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You may find it helpful to refer back to this page as you proceed with the installation of your opener.

Safety Reversing Sensor

Horizontal and vertical reinforcement

is needed for lightweight garage doors

(fiberglass, steel, aluminum, door with glass panels, etc.).

See page 20 for details.

Support bracket &

fastening hardware

is required.

See page 13.

— — — — — — — —

Door Center

Header Wall

Safety

Reversing

Sensor

Floor must be level

across width of door

FINISHED CEILING

Extension Spring

Torsion Spring

Access Door

OR

OR

One-Piece Door-Extension Spring

Header

Wall

Door

Track

Before you begin, survey your garage area to see whether any of the conditions below apply to
your installation.

SECTIONAL Door or

ONE-PIECE Door with Track Installation

Safety Reversing Sensor

FINISHED CEILING

Support bracket

& fastening

hardware is required.

See page 13.

Safety

Reversing

Sensor

Header

Wall

Access Door

Gap between floor and bottom of

door must not exceed 1/4".

ONE-PIECE Door Without Track Installation

5

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