Planning - Chamberlain Merlin Whisper Drive MT3850EVO Installation And Operating Instructions Manual

Whisper drive sectional garage door opener
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Planning

Identify the type and height of your garage door. Survey your garage area to see if any of the conditions below apply to
your installation. Additional materials may be required. You may find it helpful to refer back to this page and the
accompanying illustration as you proceed with the installation of your opener.
SECTIONAL DOOR INSTALLATION
Safety
Reversing Sensor
Header Wall
Vertical
Centreline
of Door
Gap between floor and bottom
of door must not exceed 6 mm
FINISHED CEILING
Support bracket &
fastening hardware
is required.
Refer page 12.
Torsion
Spring
Access
Door
Safety
Reversing Sensor
3
Opener
Wall-
mounted
Door
Control

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