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  Norton Door Control   Norton Series 7900 Overhead Concealed Closer  

Norton Series 7900 Overhead Concealed Closer - Page 7

   

Norton Series 7900 Overhead Concealed Closer

A member of the Yale Security Group

7900 INSTALLATION

Butt Hinge Installation

Non-Hold-Open

DEGREE OF DOOR OPENING 85° T0180°
LENGTH OF SLIDE TRACK[1]

FOR MINIMUM DOOR WIDTH OF

 25 (0.64M)

27 (0.68M)
TEMPLATE POSITION OF SLIDE TRACK[2] "G" 1 (25mm)

Hold-Open

HOLD-OPEN POINT 85°-125°[3]
LENGTH OF SLIDE TRACK[1]

FOR MINIMUM DOOR WIDTH OF

 25 (0.64m)

29 (0.74m)
TEMPLATE POSITION OF SLIDE TRACK[2] "G" 2-3/8 (0.69mm)

[1] All Series 7900 Closers are shipped with a slide track 25" (635 mm) long. For narrower doors a shorter length slide track is required, the track can be cut to the desired length at the time of installation. This provides application versatility and assures the proper length track.

[2] The template position for the slide track must always be measured from the centerline of the door's pivot point (hinge).

[3] Openings greater than 110° should be avoided to prevent damage to hinge reinforcements from door being stopped.

All dimensions are for reference only. Dimensions in parentheses are millimeters unless noted otherwise. Door sizing information is based on installation on standard weight doors, 7'0" (2.13m) high, 1-3/4" (44mm) thick; hung on anti-friction hinges and operating under normal conditions.



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