CaptiveAire’s ND-2 Series Wall Canopy Hood is a high-performance ventilation solution designed for commercial kitchens where efficiency, compliance, and ease of integration are critical. This article provides an in-depth overview of the installation process, system components, and key features of the ND-2 hood based on information provided by CaptiveAire and related documentation. The focus is on installation requirements, technical specifications, and the benefits of using a fully integrated ventilation package.
Overview of the ND-2 Hood and Its Capabilities
The ND-2 Series is a Type I wall canopy hood engineered for environments with cooking surface temperatures up to 700°F. It features an aerodynamic design with a mechanical baffle and performance-enhancing lip to ensure efficient capture and containment of cooking emissions. The hood is available in various configurations, including single and back-to-back setups, and is certified under multiple U.S. and Canadian safety standards.
The hood is ETL Listed under file number 3054804-001 and complies with UL710, ULC710, and ULC-S646 Standards. These certifications ensure that the ND-2 meets the minimum safety requirements for commercial kitchen ventilation systems. Additionally, the ND-2 is part of a fully integrated ventilation package that includes utility cabinets, factory pre-wired electrical controls, fire suppression systems, and optional equipment such as exhaust fans, make-up air units, and factory-built ductwork.
Installation Requirements and Safety Standards
Proper installation of the ND-2 hood is essential to ensure compliance with local building codes and safety regulations. According to installation instructions provided in commercial kitchen hood guides, the following factors must be considered:
- Clearance to Combustibles: The hood is built with a standard 3-inch rear standoff to meet NFPA 96 requirements when installed in a wall application. This standoff ensures safe clearance from combustible materials during operation.
- Hanging Height and Leveling: The hood must be hung level to ensure even airflow and proper function. Installation instructions emphasize the importance of maintaining the correct hanging height and clearance dimensions.
- Ductwork Integration: Ductwork must be continuously welded and properly sealed to prevent leaks. Factory-built ductwork is available as part of the fully integrated package.
- Protection During Construction: The hood must be protected from damage during the construction phase until it is fully enclosed with panels.
Components and Optional Additions in the Integrated Package
CaptiveAire offers the ND-2 hood as a standalone unit or as part of a fully integrated ventilation package. The package includes:
- Integral Utility Cabinet: A modular cabinet is available for housing electrical and control components. It is pre-wired and can be equipped with control switches for lighting and fan operation.
- Factory Pre-Wired Electrical Controls: The hood is equipped with pre-wired components to simplify installation and reduce on-site labor.
- Fire Suppression System: A listed fire suppression system is included, ensuring compliance with fire safety regulations in commercial kitchens.
- Exhaust Fan and Make-Up Air Unit: Optional exhaust fans and make-up air units can be added to the package for enhanced performance and air quality control.
- Self-Cleaning Technology (Optional): The Self-Cleaning Hood option includes a spray bar that extends the full length of the hood. This system uses a daily hot water spray cycle to clean grease from the plenum and a portion of the duct.
Technical Specifications and Design Features
The ND-2 hood is designed with a range of technical and structural features that enhance its functionality and ease of maintenance:
- Exhaust Flow Rates: The hood is capable of superior exhaust flow rates. For example, a 4-foot hood can operate at 150 CFM per foot or 600 total CFM.
- Lighting System: Factory pre-wired lighting is included to illuminate the cooking surface. The lighting fixtures are UL Listed and use tempered glass globes to hold up to a standard 100-watt bulb.
- Construction Materials: The hood is fabricated from Type 430 stainless steel with the option of Type 304 stainless steel for enhanced durability. The interior and exterior of the front are polished for an aesthetically pleasing finish.
- Grease Management System: The hood includes stainless steel baffle filters and a deep grease trough for efficient grease extraction. Optional Captrate Combo® and Captrate Solo® filters are available. A removable grease drain cup is standard for easy cleaning.
- Weight and Structural Design: The hood’s design includes rigid single-wall end panels to reduce overall weight while maintaining structural integrity. Structural and wrapper channels are standard on the top and bottom of the hood.
Installation and Setup Process
The installation process for the ND-2 hood involves several key steps:
- Preparation: Before installation, the site must be prepared to meet all clearance and electrical requirements. This includes ensuring that the wall structure can support the hood and that all electrical connections are in place.
- Mounting and Leveling: The hood is mounted using pre-punched hanging angles. These angles are provided with the hood and additional sets are included for hoods longer than 12 feet. The hood must be hung level to ensure proper function.
- Electrical and Control Integration: Electrical components are pre-wired in the factory, allowing for a streamlined installation process. Control switches for lighting and fan operation can be flush-mounted and pre-wired through an electrical chase way.
- Ductwork and Ventilation Connections: Ductwork must be continuously welded and sealed to prevent leaks. The use of factory-built ductwork is recommended to ensure compatibility and performance.
- Final Inspection and Testing: After installation, a final inspection must be conducted to ensure that all components are properly connected and functioning. This includes testing the exhaust fan, lighting, and fire suppression system.
Benefits of a Fully Integrated Ventilation System
One of the key advantages of the ND-2 hood is its availability as part of a fully integrated ventilation package. This approach offers several benefits:
- Reduced Lead Times and Shipping Costs: The hood is produced on a high-volume assembly line at one of CaptiveAire’s five manufacturing facilities, which helps reduce lead times and shipping costs.
- Improved Performance and Compliance: A pre-engineered system ensures that all components are optimized for performance and compliance with relevant safety standards.
- Simplified Installation: Factory pre-wired components and modular design reduce the need for on-site customization and labor.
- Enhanced Maintenance and Support: A fully integrated system allows for easier maintenance and troubleshooting, as all components are designed to work together seamlessly.
CaptiveAire as a Leading Manufacturer in Commercial Ventilation
CaptiveAire is a leading manufacturer of commercial kitchen ventilation systems in the United States. The company has been in operation since 1976 and is known for its commitment to quality, service, and competitive pricing. CaptiveAire’s integrated ventilation packages include a wide range of products such as dedicated outdoor air systems (DOAS), exhaust fans, fire suppression systems, and make-up air units.
The company serves a diverse range of clients, including independent restaurant owners, national chains, and public and private institutions. CaptiveAire emphasizes fast lead times and reliable service, ensuring that its customers receive high-quality products and support throughout the installation and maintenance process.
Conclusion
The CaptiveAire ND-2 Series Wall Canopy Hood is a versatile and high-performance ventilation solution designed for commercial kitchens. Its aerodynamic design, compliance with industry standards, and availability as part of a fully integrated package make it an ideal choice for operators seeking reliable and efficient ventilation. Proper installation is essential to ensure compliance with safety regulations and optimal performance. The ND-2’s technical specifications, optional features, and modular design contribute to its effectiveness in managing cooking emissions and maintaining a safe and comfortable kitchen environment.