Planning - Chamberlain Merlin Whisper Drive MT3850 Installation And Operating Instructions Manual

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 illustrations as you proceed with the installation of your opener.
NOTE: Door types are referenced A, B and C throughout the manual.
A
SECTIONAL DOOR INSTALLATION
B
ONE-PIECE TILT DOOR WITH TRACK
Gap between floor and bottom of door
must not exceed 6 mm.
Safety Reversing Sensor
Header Wall
Vertical
Centreline
of Door
Gap between floor and bottom
of door must not exceed 6 mm
Safety
Reversing Sensor
Access
Door
Safety Reversing Sensor
FINISHED CEILING
Support bracket &
fastening hardware
is required.
Refer page 12.
Torsion
Spring
Access
Door
Safety
Reversing Sensor
C
ONE-PIECE TILT DOOR WITHOUT TRACK
Header Wall
Gap between floor
and bottom of door must not exceed 6 mm.
Safety Reversing Sensor
3
Opener
Wall-
mounted
Door
Control
Rail
Wall-mounted
Door Control
Access
Door
Safety Reversing
Sensor