Glynn-Johnson 450 Series Overhead Door Holder: Installation Guide and Technical Overview

The Glynn-Johnson 450 Series Overhead Door Holder is a versatile solution for medium to light-duty overhead door control. Designed for surface mounting, it offers a range of installation options and material choices to suit various architectural needs. This article provides a detailed technical overview of the 450 Series, including installation instructions, material specifications, and performance characteristics, all based on the available documentation and product details.

Overview of the 450 Series

The 450 Series is a surface-mounted overhead door holder and stop system designed to provide reliable control for doors of various types and configurations. It replaces the older GJ360, GJ370, and GJ380 series and is available in multiple functions, including hold-open, stop-only, and friction hold-open. The series is compatible with doors equipped with conventional butt hinges, offset pivots, continuous hinges, swing clear hinges, and other specialty hinge types.

One of the key benefits of the 450 Series is its non-handed design, which simplifies installation and inventory management. This feature allows the product to be installed on either side of the door without the need for additional modifications or special configurations. Additionally, the 450 Series includes templates that allow for variable mounting positions, accommodating door opening angles ranging from 85° to 110°. This flexibility ensures that the holder can be adapted to a wide range of door types and applications.

The 450 Series is available in a variety of materials, including brass, 300 series stainless steel, and steel, with surface finishes that complement different architectural styles. Brass and stainless steel models are particularly resistant to corrosion, making them suitable for use in both interior and exterior environments. The steel models are appropriate for normal interior use but may require additional protective treatments if used in more demanding conditions.

Installation Instructions

Proper installation of the Glynn-Johnson 450 Series Overhead Door Holder is critical to ensuring its functionality and longevity. The following steps outline the general installation process based on the manufacturer's documentation.

Step 1: Determine the Mounting Position

The first step in the installation process is to determine the appropriate mounting position. The 450 Series includes templates that allow for variable mounting positions, ranging from 85° to 110° of door opening. These templates are designed for use with a wide variety of door types and frames. To select the correct mounting position, measure the angle of the door opening and refer to the template provided with the product.

For hollow metal frames, it is recommended to reinforce the frame with a minimum thickness of 3/16" (5 mm) and a minimum length of 12" (305 mm). This reinforcement ensures that the frame can support the weight and force exerted by the door holder, especially in applications involving frequent door use.

Step 2: Locate Dimensions A, B, and C

Once the mounting position has been determined, the next step is to locate the critical dimensions for installation: A, B, and C. These dimensions are measured from the centerline of the hinge and are essential for aligning the holder with the door and frame.

• Dimension A: Measured from the centerline of the hinge to the edge of the door.
• Dimension B: Measured from the centerline of the hinge to the frame.
• Dimension C: Measured from the edge of the door to the centerline of the hinge.

These measurements ensure that the holder is installed in the correct position to provide optimal door control and prevent misalignment or wear on the hardware.

Step 3: Install the Jamb Bracket

The jamb bracket is a critical component of the installation process. It provides a secure mounting point for the door holder and ensures that it remains in place during normal use. The bracket should be installed on the stop side of the door frame, following the template provided with the product.

After the bracket is installed, the door holder can be attached using the provided hardware. It is important to ensure that all fasteners are tightened securely but not over-tightened, as this can cause damage to the components or affect the door's operation.

Step 4: Adjust Tension and Function

The 450 Series offers three primary functions: hold-open, stop-only, and friction hold-open. Depending on the model selected, the door holder may require tension adjustments to ensure smooth operation. These adjustments are made using a 5/32" or 3/32" allen wrench, depending on the function.

• Hold-Open Tension Adjustment: For hold-open models, the tension can be adjusted by turning the screw inside the "long" end of the cam. Turning the screw clockwise decreases the hold-open tension, while turning it counterclockwise increases the tension. The factory sets the tension to a minimum, so it may need to be adjusted based on the specific application.

• Friction Tension Adjustment: For friction hold-open models, the friction tension can be adjusted using a 3/32" allen wrench. Turning the screw clockwise increases the friction tension, while turning it counterclockwise decreases it. This adjustment allows the door to be held in place at various angles while still allowing it to move freely when needed.

After the tension has been adjusted, the door should be tested to ensure that it opens and closes smoothly and that the holder functions as intended.

Step 5: Final Inspection and Testing

Once the installation is complete, it is important to perform a final inspection and test the door holder to ensure that it is functioning correctly. This includes checking for proper alignment, secure mounting, and smooth operation. Any issues should be addressed immediately to prevent damage to the hardware or the door.

If the door is part of a fire-rated system, it is important to verify that the installation does not affect the fire rating of the door or door frame. The 450 Series is UL listed as a miscellaneous fire door accessory and may be used on hollow metal or wood fire doors without adversely affecting the fire rating.

Technical Specifications and Performance

The 450 Series is available in a range of sizes and finishes to accommodate different door types and architectural styles. The following table summarizes the key specifications of the 450 Series:

The 450 Series is designed to provide reliable performance in a variety of applications. The use of high-quality materials such as brass and stainless steel ensures that the door holder is resistant to corrosion and wear, making it suitable for both interior and exterior use. The surface-mount design minimizes the need for extensive door and frame preparation, which reduces installation time and labor costs.

In terms of durability, the 450 Series is rated for standard to medium duty applications, meaning it is suitable for doors that are opened and closed frequently but not under extreme conditions. The non-handed design also contributes to its versatility, allowing it to be installed on either side of the door without the need for additional modifications.

Additional Features and Accessories

The 450 Series offers several additional features and accessories that enhance its functionality and adaptability. These include:

• Angle Jamb Brackets: These brackets allow for greater flexibility in the installation angle, ensuring that the door holder can be adjusted to accommodate different door configurations.

• Blade Stop SHIM Kit: This kit provides additional support and stability for the door holder, especially in applications where the door may experience significant movement or vibration.

• Pin-in-Socket Security Screws: These screws provide an added layer of security, making it more difficult for the door holder to be tampered with or removed.

• 450 Series Adjustments: As previously mentioned, the door holder includes tension adjustment mechanisms for hold-open and friction hold-open models. These adjustments allow users to fine-tune the performance of the device to meet their specific needs.

• Sample Applications: The manufacturer provides sample applications to help users determine the most appropriate configuration for their doors. These applications include information on door size, function, and material compatibility.

For users who require a combination of door control and smoke detection, the Glynn Johnson 280 SensaGuard Series offers an integrated solution that combines a door holder with a smoke detector.

Conclusion

The Glynn-Johnson 450 Series Overhead Door Holder is a versatile and reliable solution for medium to light-duty door control applications. Its surface-mounted design, non-handed configuration, and wide range of material and finish options make it suitable for a variety of door types and architectural styles. The installation process is straightforward, with templates and adjustable tension settings that allow for customization based on the specific needs of the application.

Whether used in commercial, residential, or industrial settings, the 450 Series provides a durable and efficient means of controlling overhead doors. Its compliance with BHMA and ANSI standards ensures that it meets the highest quality and performance requirements, making it a trusted choice for professionals and DIY enthusiasts alike.

Sources

1. Glynn-Johnson Overhead Door Holder 450 Series
2. Glynn-Johnson 450 Series Overhead Door Holder
3. Glynn-Johnson 450 Series Medium Duty Surface Overhead Door Holders and Stops