Nabco GT-710, Manual

Rev. 9-24-14 

Part #15-10683

www.NabcoEntrances.com 

GT 710-8710 Swing Door System Low Energy Operator

Install the Header 

3-9

3.►

Measure 1 inch from the End Cap of Header towards the center. Mark a Vertical Line.

4.►

Measure at least 1/2 inch from the bottom of Header towards the top. Mark a Horizontal Line 

across the Vertical line. This is the center of the first screw hole. Drill 1/4 inch screw hole.

5.►Mark (1) more Horizontal line across the Vertical line directly above the first screw hole. This is 

the center of the second screw hole. Drill 1/4 inch screw hole.

a.  It may be necessary to install a Shim behind the Header if mounting the Header to a wall.

6.►

Go to the Strike side of Header. Repeat steps 3 thru 5.

DN 1086

Pivot side of Header

1/4” Screw holes

1”

1”

Figure 3-2 

Drill 1/4” Screw holes on both sides of Header

Section 3c: Prepare the Door Frame

Note:       The following instructions are for typical Metal Doors and Frame Profile. It is recommended to use 

lag bolts.

Note:       If the Door Frame is not properly reinforced nor anchored to the building surface, and/or is hollow, 

reinforce the Door Frame with 1/4-20 blind rivnuts (not provided by NABCO).

Note:       If the Door Frame is not Metal, ensure the Door Frame being used is of equal strength.

1.►

Go to the Pivot Side of Swing door. 

2.►

Measure up from the Bottom edge of the Top door frame:

X

GT 710: 1/8 inch 

X

GT 8710: 1-1/8 inch. 

3.►

Mark a Horizontal Line on the face of Top door frame, at both ends. Please see 

Figure 3-3

.

DN 1109

Mark Measurement

across Top door frame

1/8”

(GT 710)

Top of Door

1-1/8”

(GT 8710)

Figure 3-3 

Measure from the Top of Swing door to the Top Door Frame

4.►

Lift the Header up against the Top door frame until the bottom edge of Header is butted up 

against the Horizontal Line, at both ends. Please see 

Figure 3-4

.

5.►

To ensure proper operation of the Swing Arm:

X

For a Door Jamb that is 1-3/4 inches wide, position the Pivot side of Header so it is flush to 

the outside edge of the Pivot Door Jamb.

X

For a Door Jamb that is wider than 1-3/4 inches, measure from the inner edge of the Pivot 

Door Jamb to the center. Mark a vertical line at the 1-3/4 inch measurement. The Pivot side 

of Header must butt against the 1-3/4 inch mark.