Destratification Fans

Product Code: DDF

Directional destratification fans provide improved comfort and reduced energy costs by efficiently mixing air from floor to ceiling to improve temperature uniformity. These fans are ideal for a variety of commercial, industrial and institutional applications, especially in buildings with high ceilings.

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Greenheck’s directional destratification fans model DDF is a high-performance, direct-drive fan designed for applications where low sound and energy efficiency are critical. Featuring an aerodynamically optimized housing and Vari-Green EC motor, model DDF provides up to 15% more airflow than competitor products at a fraction of the operating cost. Plus, their powerful directional airflow can destratify spaces with ceilings up to 65 feet tall, taking energy savings and comfort to new heights.

Heat loss through the roof of your building is one of the primary reasons for high energy costs during the heating season. Model DDF destratification fans are specifically designed to combat this problem by driving warm air near the ceiling of a building down to occupant level to conserve heat and improve comfort. With their powerful directional airflow, model DDF fans can destratify buildings with ceilings up to 65 feet, taking energy savings to new heights.

Key Features:

10, 12 and 14 inch propeller diameters
Durable co-polymer composite housing
Electronically Commutated (EC) Vari-Green motor
10 foot wiring pigtail with plug

Motor and Voltage Options:

1/15 – 1/4 HP Direct Drive Motor
115-277V, Single Phase

Mounting Options:

Universal mounting using the supplied steel mounting cable and Gripple hanging hardware

PLUG-AND-PLAY WIRING: Fans include a factory-installed 10’ power wiring pigtail with plug for fast and easy installation in any building.

UNIVERSAL CEILING MOUNT: Designed to mount to any ceiling structure using the supplied steel mounting cable and Gripple® hanging hardware. Yoke mounting bracket allows for field adjustment of hanging angle up to 45°.

VARI-GREEN® DIRECT DRIVE MOTOR: Electronically commutated (EC) Vari-Green motors provide advanced motor protection, controllability, and energy efficiency in a single low-maintenance package. Motors are factory-wired for 115V/1 operation, but can be adjusted for 208-230V/1 or 277V/1 operation in the field.

3D PRINTED HOUSING: Unique 3D printed housing is aerodynamically optimized for maximum airflow, throw distance, and coverage area. Steel-reinforced, co- polymer composite material reduces overall fan weight without sacrificing strength or longevity.

ADVANCED SAFETY FEATURES: Mechanical and electrical safety systems ensure worry-free operation for years to come. Key safety features include:

Safety restraint cable for redundant connection to building structure
Factory-installed intake guard to prevent unsafe contact with fan propeller
Vari-Green motor technology with soft start feature, overload protection, thermal protection, and locked rotor protection

CONTROLLABILITY: Vari-Green motors provide industry-leading speed controllability with up to 80% usable turndown. Fans can be paired with an assortment of Vari-Green controls or operated remotely via 0-10VDC control signal.

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