Installation Instructions

23
Roof Pitch
Horizontal track follows the pitch of the roof line. Track is
assembled similar to standard lift, except that the horizontal
angle is mounted level just above the radius. (FIG. 6-T)
Everything is put together the same as type of track ordered.
Installation follows standard radius track procedure.
Low Headroom Double Track (LHR)
LHR can be installed rear torsion (springs at back of
horizontal track) up to a maximum door weight of 800
lbs., after that, it must be installed front torsion up to
1,200 lbs. Front torsion is much easier to install, but it
requires more headroom and the door will hang in the
opening unless an electric operator is used.
The door hardware for LHR is the same as for
standard radius except special outside bottom
brackets are used to allow cable to ride on the outside
of the track and the top bracket is flat with the top roller
being the only one riding in the top track. (FIG. 7-T)
Install low headroom bottom brackets and cable
using red-colored fasteners. (FIG. 8-T)
All struts will be applied according to strutting schedule on
page 9, except the top strut will follow instructions below.
Top Section Strutting Procedure for LHR
With the top section face down on saw horses, place
strut on top of section (section should be straight).
Position top edge of strut approximately 1" down from
top of door. At each center stile, fasten strut to center
stile with (2) #14 x
5
/8" self-drilling screws. The ends of
the struts will require fastening in the same manner as
the center stiles after the section has been installed
and top brackets have been installed and adjusted.
Fig. 6-T
End Bearing Plate
Horizontal Track
3
/8 x 1
1
/4" Slotted Truss Head
Bolt & Nut. Use Hole In
Horizontal Track
Vertical
Track
ROOF SLOPE INSTRUCTIONS
1) Fasten Horizontal Track To
Rear Hanger & Commercial
Vertical Bracket
2) Bolt The Extension Angle
Between The Horizontal
Track & The Commercial
Vertical Bracket
(4)
1
/4" x
5
/8"
Track Bolts
& Nuts
Extension Angle (Cut If Too Long)
Commercial
Vertical
Bracket
Fig. 7-T
INSIDE VIEW — LIFT CABLE NOT SHOWN
Horiz. Track
Low Head Room
Double Track
Vertical Track
Hinge
Roller
(4)
1
/4"
Flange
Nuts
End Stile
Starter
Angle
Commercial Vertical Bracket
LHR Top Bracket
(See View B)
End Bearing Plate
(LHR Front
Mount Torsion Only)
VIEW B
Roller
LHR Top Bracket
(2) #14 x
5
/8"
Sheet Metal
Screw
Fig. 8-T
(2)
1
/4" x
5
/8"
Track Bolts
Thru Vertical
Track &
Comm.
Vertical
Bracket
(2)
1
/4" x
5
/8"
Track Bolts
Thru Horiz.
Track &
Comm.
Vertical
Bracket
End Stile
(3)
3
/8" Carriage Bolts & Nuts
Bottom
Bracket
Lift Cable
Weatherstrip
Second
End Stile
CBB-95
LHR
Bracket
Weatherstrip
(5) #14 x
3
/4"
Self-Drilling
Screws
Lift Cable
End Stile
Cotter
Pin
Key
3" Roller
Location
2" Roller
Location
INSIDE OF DOOR
OUTSIDE OF DOOR