Chamberlain INSL24UL Installation Manual page 10

Install Without Adjustable Rails
Check the national and local building codes before installation.
NOTE: The rails will have to be removed for retro-fit installations.
1. Locate and anchor two posts made of 3" (7.6 cm) outer diameter
heavy walled pipe. Posts should be parallel and square to the gate.
2. Locate electrical conduit, as required, prior to pouring concrete.
3. Remove the rails from the sides of the operator.
4. Secure Operator to posts using four 3" (7.6cm) U-bolts and
hardware. The backing plate and gasket within the cabinet must be
utilized with the U-bolts.
5. Fill any empty holes on the side of the operator with the extra bolts
from the rails or apply a sealant.
Rails
12" (30.5 cm)
Minimum from
ground
Power and Control Wiring Must
Be Run In Separate Conduit
INSTALLATION
Drive and idler sprocket toward gate side
10
(Gate)
8.5" (21.6 cm)
24" (61 cm)
39" (99.1 cm)
Minimum
Depth Required By
Local Codes or Below
Frost Line
3" (7.6 cm) outside
diameter heavy wall
fence pipe
Make sure any empty holes on the
side of the operator are filled using
the extra bolts from the rails.
Rails