The Greenheck FSD-211 series of fire and smoke dampers is a critical component in commercial and industrial HVAC systems, designed to meet stringent fire safety standards and provide reliable performance in emergency conditions. These dampers are certified under multiple standards, including UL 555 and UL 555S, and are aligned with the requirements of the National Fire Protection Association (NFPA) standards such as NFPA 80, 90A, and 105. Installation of these dampers must follow strict procedures to maintain their fire-resistance and smoke control capabilities, as improper installation can compromise their function and safety.
This article provides a detailed overview of the Greenheck FSD-211 installation process, focusing on technical specifications, installation supplements, compatibility with accessories, and compliance with fire safety standards. It is based entirely on information provided in Greenheck’s official documentation and supplementary installation instructions.
Overview of the Greenheck FSD-211 Series
The FSD-211 series includes both standard and modified configurations, such as the FSD-211M variant. These dampers are designed for use in both in-wall and out-of-wall applications and are suitable for HVAC control systems. They support various control inputs, including 2 to 10 VDC or 4 to 20 mA signals, and can be operated using electric actuators. The series is also compatible with a range of accessories and options that facilitate integration into modern HVAC systems.
Key certifications include compliance with AMCA air performance standards, NFPA fire and smoke damper standards, and UL listings. These certifications ensure that the FSD-211 series meets the necessary safety and performance requirements for installation in commercial and industrial settings.
Installation Requirements and Supplements
Greenheck provides detailed installation supplements that address specific installation scenarios and special requirements. These supplements are essential for ensuring that the damper functions correctly and maintains its fire-resistance and smoke control properties. Some of the key installation supplements include:
- Concrete Floor with Steel Deck: Specifies installation methods for structures with steel decks and concrete floors.
- Drive Slip Breakaway Connection: Explains the use of breakaway connections to allow the damper to remain in the wall during structural failure.
- Field Installed Sleeve: Provides guidance on installing sleeves in the field when factory-supplied options are not feasible.
- Fire Resistant Ventilated Duct Assembly: Details the integration of the damper into a fire-resistant duct system.
- Greenheck Test Switch: Explains the use of test switches for periodic testing and maintenance.
- Grille Installation: Covers the installation of grilles in conjunction with the damper.
- Metal Stud in Shaftwall: Provides guidelines for installing the damper in shaftwalls constructed with metal studs.
- No Flow Smoke Detector: Describes the installation and operation of no-flow smoke detectors.
- Open or Close Indicator: Explains the use of indicators to provide visual feedback on damper position.
- Quick Connect Breakaway Connections: Details the installation of breakaway connections for rapid disconnection in emergencies.
- Resettable Link: Describes the use of resettable links for controlled damper operation.
- Sealant Supplement: Provides instructions on approved sealants for use in specific installation scenarios.
- Single Side Retaining Angle: Explains the use of retaining angles in certain rated applications.
- Single 3-Sided Retaining Angle: Describes the use of three-sided retaining angles for enhanced stability.
- Sleeve Extension: Provides guidelines for extending sleeves beyond standard lengths.
- Smoke Detector: Covers the installation and operation of smoke detectors in conjunction with the damper.
- Tunnel Corridor: Describes installation considerations for tunnel and corridor applications.
These supplements are essential for ensuring that the damper is installed correctly and functions as intended in emergency conditions. They also help maintain the damper’s UL listing and compliance with fire safety standards.
Technical Specifications and Installation Parameters
Greenheck specifies minimum size and thickness requirements for the FSD-211 series to ensure structural integrity and proper function. The minimum size for Greenheck dampers is 1½ in. by 1½ in. (38 mm x 38 mm). For dampers up to 36 in. (914 mm) wide and 24 in. (610 mm) high, the minimum thickness is 16 gauge. For larger dampers, the minimum thickness increases to 14 gauge.
Retaining angles are a critical component of the installation and must be anchored through the damper sleeve to allow the damper to operate correctly in a fire condition. Single-sided retaining angles are only to be used on 1½ hour rated dampers, while two-sided angles are preferred for general applications. Sealant is not required for the installation of retaining angles, but if it is used, it must be in accordance with Greenheck’s supplemental instructions.
The use of sleeves and mounting angles is optional and does not affect the UL listing of the damper. However, they may be used at the contractor’s discretion to facilitate installation and ensure alignment. Retaining angles and sleeves can be either factory or field-supplied, depending on the project requirements.
Accessories and Options
The FSD-211 series is compatible with a range of accessories that enhance its functionality and integration with HVAC systems. These include:
- 120V to 24V Transformer: Converts voltage for use with 24V actuators and controls.
- Belimo FSKN BACNet Test Modules: Enable integration with building automation systems using BACnet protocols.
- Greenheck Test Switch (GTS): Provides a means to test the damper’s operation during maintenance.
- No Flow Duct Smoke Detector (2151): Detects the absence of airflow, indicating potential damper failure.
- Open or Closed Indicator (OCI): Provides visual confirmation of damper position.
- Resettable Link (RRL): Allows for controlled reset of the damper after a fire event.
- Smoke Detectors (DUCT SD): Detects smoke in the duct and triggers damper closure.
- Temperature Limited Override (TOR): Allows for manual override of the damper in specific temperature conditions.
- Type R Transitions: Facilitate smooth transitions between ductwork and the damper.
- Security Bar Supplement: Provides additional security for the damper assembly.
These accessories can be factory or field-installed and are designed to work in conjunction with the damper to ensure optimal performance and compliance with fire safety standards.
Maintenance and Testing
Regular maintenance and testing are essential to ensure the continued functionality of the FSD-211 damper. NFPA 80 and 105 specify the maintenance and testing requirements for fire and smoke dampers, respectively. These standards allow for the repair of inoperable dampers and the addition of position indication functionality. However, any modifications must be approved by the local Authority Having Jurisdiction (AHJ).
Periodic testing should be performed using the Greenheck Test Switch or other approved methods. The replacement of actuators must be done with units that are equal to or greater than the original in terms of temperature and torque rating, as well as operation type (2-position vs. modulating). Greenheck recommends consulting their documentation for approved replacement actuators.
Breakaway connections must also be tested regularly to ensure they function correctly in the event of structural failure. These connections allow the damper/sleeve assembly to separate from the duct while remaining in the wall for maximum protection.
Installation in Special Applications
The FSD-211 series can be installed in both in-wall and out-of-wall configurations. For out-of-wall applications, Greenheck offers the OFSD-211 model, which is specifically labeled for such use. These models may also be used in applications where the damper needs to be installed outside the wall for accessibility or maintenance purposes.
Greenheck also provides a UL-approved grille installation supplement for standard combination fire smoke dampers, allowing for the integration of grilles in certain applications. This is particularly useful in commercial settings where aesthetic considerations are important.
In tunnel or corridor applications, special installation considerations must be followed to ensure the damper functions correctly in confined spaces and under high-traffic conditions. Greenheck’s installation instructions include specific guidance for these environments.
Compliance and Certification
Compliance with fire safety standards is a critical aspect of the FSD-211 installation process. The damper must be installed in accordance with the requirements of the National Fire Protection Association (NFPA) standards, including:
- NFPA 80: Covers the installation, testing, and maintenance of fire dampers.
- NFPA 90A: Addresses the installation and performance of HVAC systems in relation to fire safety.
- NFPA 105: Specifies the maintenance and testing requirements for smoke control systems.
The FSD-211 series is also certified under UL 555 and UL 555S, which ensure that the damper meets the necessary performance criteria for fire and smoke control. These certifications are essential for maintaining compliance with building codes and fire safety regulations.
Conclusion
The Greenheck FSD-211 fire and smoke damper is a critical component in commercial and industrial HVAC systems, designed to meet rigorous fire safety standards and provide reliable performance in emergency conditions. Installation must follow strict procedures outlined in Greenheck’s official documentation and installation supplements to ensure proper function and compliance with safety regulations. A range of accessories and options are available to enhance functionality and integration with modern HVAC systems.
Regular maintenance, testing, and adherence to fire safety standards are essential to ensure the continued effectiveness of the damper. Whether installed in in-wall or out-of-wall configurations, the FSD-211 series provides a reliable solution for fire and smoke control in a variety of applications.