Installation Instructions

24
For doors over 350 pounds, install the 5" pulley as
illustrated in Figure 9-T, View C. The carriage bolts
used must be installed with the heads toward the
inside of the track and the nuts facing outside as in
the illustration. The cable must be routed through
the pulley saddle prior to attaching to drum.
Rear torsion spring doors will require that springs
be placed at rear of track and a center support
hanger(s) be provided that is strong enough to
withstand the torque of the springs. Rear of horizontal
tracks must be securely fastened in the proper
position before springs are wound or door is lifted.
Doors over 12' high will require two backhangs for
each horizontal track. Horizontal tracks should be
level and backhung according to Figure 9-T. (See
important note on page 17 for additional backhang
requirements.) All backhang material is supplied by
installer due to ceiling height differences.
Install springs according to Figure 10-T and wind. See
spring winding on page 18 for more information. Push
track towards jambs until door is tight against stop or
steel jambs and tighten track bolts. Adjust top brackets
(FIG. 7-T, page 23) by sliding it up or down on door in
order to position top section correctly.
Install the inside slide lock or lock bars (page 12)
after springs are wound. Nail door stop in place if
applicable.
Fig. 9-T
This Backhang To Be Mounted Halfway
Between Header & Rear Backhang
& To Top Track Only. (See View A)
Left-Hand Cable Drum
Left Rear Backhang
Optional Mounting
End Bearing Plate
(See View B)
Comm. Flag
Bracket
WIND UP
LHR REAR MOUNT TORSION SPRING DOOR — SIDE VIEW
Low Headroom Top Brackets
All Door Models: Insert rollers in low headroom
top brackets. On each side of door, insert each
roller into the top horizontal track. Slide each low
headroom top bracket down the top section until
top section is tight against wood stop or steel
jamb. If a top strut has been installed the top
bracket will have to be placed between stile and
strut. Line each low headroom top bracket up with
the side of the top section. Using both slots in
each low headroom top bracket as a guide, drill
3
/16" pilot holes in the center of each slot leaving
room for final adjustment in both directions.
Steel Door Models: Attach each low headroom
top bracket with two #14 x
5
/8" sheet metal screws.
(FIG. 7-T, page 23)
Rear Mount Torsion Spring Doors
Attach horizontal track to vertical bracket using
1
/4" x
5
/8" track bolts and flange nuts. Attach hori-
zontal angle to the vertical angle using
3
/8" x
3
/4"
carriage bolts and flange nuts. The end bearing
plate will be positioned and fastened as shown in
Figure 9-T. Some drilling in end bearing plate and
horizontal angle may be required.
(FIG. 9-T)
Lift Cable
Carriage
Bolt
Pulley
Saddle
Flange
Nut
Track
4" Pulley
Bottom Of Backhang May Need To Be Cut At
45° So There Is No Interference With Lift Cable
VIEW A
PULLEY INSTALLATION
Starter Angle
MID-HORIZONTAL
BACKHANGER
(3)
5
/16" Nuts
(3)
5
/16" x 1" Bolts
Horizontal Angle
(3)
5
/16" x 1
5
/8"
Lag Screws Attach
to Ceiling Joist
3
/8" x 1"/min.
Bolt & Nut
Backhang
Carriage Bolts Through
End Bearing Plate &
Track. Holes In Track
Are Drilled At
3
/8" So
End Bearing Plate
Can Be Fastened
Level With The Track
Horizontal
Angle
(2)
3
/8"
Flange
Nuts
Track
End Bearing Plate
VIEW B
(Cable Drum Not Shown)
(Backhang Not Shown)
(1)
3
/4"
Washer
Pulley Saddle (Doors
Over 350 Lbs.
Horizontal
Angle
Horizontal
Angle
5" Pulley
Pulley
(See View A)
Carriage
Bolt
Starter Angle
Flange Nut
VIEW A-2
(Doors Up Through 350 lbs.)
VIEW A-1
(Doors Over 350 lbs. up to 800 lbs.)