Vostermans Multifan V-Flo Fan, Vertical Circulation - 3-Phase 265/460V, 3120 CFM

Vostermans Multifan V-FloFan for Even Greenhouse Climate

The V-FloFan is a vertical circulation fan from Vostermans, sold under the Multifan brand. It hangs above the crop with its intake facing down and an air deflector on top. The 16-inch impeller draws air up from below, and the deflector spreads it out under the roof. That air then rolls back down across the crop in a wide, gentle pattern. Maximum airflow is 3120 CFM at free air. This model runs on a three-phase 265/460V supply at 60 Hz. It draws 200 W, at 0.9 A on the 265V connection or 0.5 A at 460V. The motor turns at 1145 rpm. Speed control is by transformer. Vostermans lists a sound pressure level of 47 dB(A), measured 7 meters from the fan. The air deflector measures about 25.6 inches across, and the fan stands about 21.2 inches tall. A guard covers the intake side as standard.

Hanging a Vertical Air Circulation Fan in the Greenhouse

Vostermans recommends hanging each fan no more than about 16 feet above the crop for the best effect. Space the fans roughly 59 feet apart so their air patterns meet across the house. Keep the area around the fan free of screens, beams and pipes, since obstacles disrupt the airflow and can make the fan vibrate. Suspend it from a rigid structure, ideally the greenhouse truss using the optional Vostermans truss bracket. Never hang it from chains, rope or steel cable, because the fan will spin and sway. Do not mix horizontal HAF fans with these vertical fans in the same space, and keep other strong airflows away from the pattern. After hanging, open the condensate drain hole at the lowest point of the motor and close the others. A qualified electrician should wire the motor, checking that star or delta is set for the supply. The fan ships without a controller or isolator, so add both, along with overload protection for each fan. Thermal detectors are optional on three-phase motors and connect to separate terminals for an external control circuit. Before any wet cleaning, put the spare plugs back into the open drain holes.

Key Features

• 3120 CFM Vertical Airflow: Lifts air and spreads it back over the crop.
• Air Deflector Design: Throws air out under the roof in a wide pattern.
• Three-Phase 265/460V: 200 W input, star or delta connection.
• Transformer Speed Control: Turn airflow down for gentle movement.
• 47 dB(A) at 7 m: Quiet running in the house.
• Truss Mounting: Optional bracket fits common greenhouse trusses.

Technical Specifications