Norton 7900 RH 689 Concealed Overhead Door Closer Instruction

Norton 7900 RH 689 Overhead Concealed Closer offers a sophisticated solution for door control, seamlessly blending functionality with aesthetics. Designed for both exterior and interior doors, this overhead concealed closer is available in sizes 1-6, ensuring a perfect fit for various applications. The unit is crafted with a cast aluminum alloy shell and is concealed within a 4" high frame header, providing a clean look while enhancing security. With only the robust one-piece arm visible when the door is open, this closer offers a high degree of vandal resistance and is ideal for high-profile settings like office buildings and conference centers. The hydraulic fluid is non-gumming and non-freezing, ensuring reliable performance in diverse conditions. This model is equipped with four or five noncritical valves that allow for independent regulation of sweep speed, latch speed, and backcheck cushioning, accommodating various user needs. The degree of stop is field adjustable, and the integrated cushioning shock absorber mechanism ensures smooth operation. Compliant with Accessibility Code specifications, the Norton 7900 is a top choice for those seeking a functional yet stylish door closer solution. Whether for commercial or residential use, this product promises durability and ease of installation.

Overhead Concealed Closer

Overhead Concedaled Closer, Non-Hold Open, Size 1-6, RH, Aluminum

Overhead concealed closers provide an aesthetically appealing way to close a door. In situations where a closer is needed but concealment in the frame header is required or desired, the Norton 7900 closer is the ideal solution for door control. Once installed, only the solid one-piece arm is visible when the door is open; therefore, this unit provides a high degree of vandal resistance. When the door is closed, the closer, arm and slide track are fully concealed. For applications where concealment is required and security is the main concern, the 7970 should be used. The 7900 overhead closers are best suited for high-profile applications such as office buildings or conference centers. The 7970 security closers offer the necessary concealment and tamper resistance required in detention and psychiatric facilities. Used in conjunction with the door position switch (DPS) they provide the ability to monitor door status remotely.

The Norton® 7900 closer is the ideal solution for door control.

The 7900 overhead closers are best suited for high-profile applications such as office buildings or conference centers. The 7970 security closers offer the necessary concealment and tamper resistance required in detention and psychiatric facilities. Used in conjunction with the door position switch (DPS) they provide the ability to monitor door status remotely.

• Closers for exterior (and) interior doors shall be full rack and pinion type with cast aluminum alloy shell.
• Closers shall be concealed in a 4" (102 mm) high frame header.
• The slide track shall be concealed in the top rail of the door.
• Hydraulic fluid shall be non-gumming and non-freezing.
• (Closer shall be provided with a fireblocking door liner to permit installation in 20-minute wood fire door assemblies.)
• Closer shall have (four) (five) noncritical valves, hex-key operated, to independently regulate sweep speed, latch speed, backcheck cushioning (and backcheck positioning) (and delayed action closing).
• [Closers shall be sized units (4, 5 or 6)].
• [Closers shall have power adjustment to permit a 50% increase in power over the minimum closing force for any size.]
• [Closers shall have multi-sized adjustment for (interior doors)(exterior doors)].
• Closer shall conform to Accessibility Code specifications.
• Degree of stop shall be field adjustable.
• Slide track shall have a built-in cushioning shock absorber mechanism.
• (Hold open mechanism shall be capable of release when holding function is not required. Hold open mechanism shall have an adjustable range 85°-110° of door opening and shall release with a manual pressure on the edge of the door in the direction of closer).
• Closer to be Norton® [Series 7900] [Series 7970] (with Norton® #790 Fire Block).
• 7970/7970DPS shall be supplied with Torx® lobular drive fasteners having a center security pin.

Resources

• 790 Fire Bloc for 7900/7970, NHO only
• 7900 Overhead Concealed Closer
• 7900-B, 7900-CP, 7900-OP, Non-Hold Open
• LCN Closers & Auto Operators Installation Guide
• Overhead Concealed Closer Cross-Reference Sheet