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One-piece door installations, Planning (continued) – Chamberlain WHISPER DRIVE WD822KD User Manual

Page 5

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5

Planning (Continued)

ONE-PIECE DOOR INSTALLATIONS

• Generally, a one-piece door does not require

reinforcement. If your door is lightweight, refer to the
information relating to sectional doors in Installation
Step 11.

• Depending on your door’s construction, you may need

additional mounting hardware for the door bracket
(Step 11).

Without a properly working safety reversal system,
persons (particularly small children) could be
SERIOUSLY INJURED or KILLED by a closing garage
door.
• The gap between the bottom of the garage door and

the fl oor MUST NOT exceed 1/4" (6 mm). Otherwise,
the safety reversal system may NOT work properly.

• The fl oor or the garage door MUST be repaired to

eliminate the gap.

ONE-PIECE DOOR WITHOUT TRACK

Header Wall

Rail

Gap between fl oor and
bottom of door must not
exceed 1/4" (6 mm).

Safety Reversing
Sensor

Safety Reversing
Sensor

Access
Door

FINISHED CEILING

Support bracket &
fastening hardware
is required.
See page 15.

Motor unit

Wall-mounted
Door Control

ONE-PIECE DOOR WITH TRACK

CLOSED POSITION

Straight
Door
Arm

Emergency
Release
Rope &
Handle

Header
Wall

Belt

Rail

Trolley Stop Bolt

Trolley

Garage
Door

Door
Bracket

Curved
Door Arm

Header
Bracket

Gap between fl oor and
bottom of door must not
exceed 1/4" (6 mm).

Safety
Reversing
Sensor

Safety Reversing
Sensor

Access
Door

CLOSED POSITION

Straight
Door Arm

Emergency
Release
Rope &
Handle

Header
Wall

Belt

Rail

Trolley
Stop Bolt

Trolley

Garage
Door

Door Bracket

Curved
Door
Arm

Header
Bracket