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Greenheck Offers Automatic Balancing Damper with Register Box

Greenheck’s line of automatic balancing dampers continues to expand with the addition of model ABD-RB that combines a Greenheck automatic balancing damper with the convenience of a factory-supplied register box. Model ABD-RB can be installed in both walls and ceilings for supply or exhaust applications. The automatic balancing damper can be mounted in either the side or the back of the register box for flexible installation. A factory-supplied grille is also available. Pressure-independent automatic balancing… Read More

Fire, Smoke and Radiation Damper Installation Guide for HVAC

Since SMACNA published the first edition of the “Fire, Smoke and Radiation Damper Installation for HVAC Systems” many changes have occurred in concepts of fire protection. Emphasis on use of duct systems in engineered smoke control modes as outlined in ASHRAE and National Fire Protection Association (NFPA) publications is now a key consideration for HVAC system engineers. Such concepts depart from the traditional practice of automatic shutdown of duct systems and create new perspectives on… Read More
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