VENTS DRF-OV 250

• The destratificators are used in industrial workshops, stocks, supermarkets, exhibition and concert halls, closed sport halls, etc.
• The destratificators are recommended for use in large premises above 5 m height where warmer air due to natural air convection is accumulated closer to ceiling whereas air temperature in the occupied area (2 m above floor level) remains lower.

• The destratificator consists of an axial fan that is attached to the casing with anti-vibration mounts.
• The DRF-OV and DRFI-OV destratificator casing is made of polymer-coated steel.
• The DRFI-OV casing is perforated and has mineral wool insulation to attenuate sound produced by the axial fan.
• The directing vanes are located at outlet from the DRFI-OV to provide a long linear air flow.

• Warm air is accumulated above in the heated high premises.
• Air temperature rises per 1 °C for each meter upwards, which results in heat losses through the roof.
• The destratificators direct warm air accumulated under the ceiling to the occupied area. The temperature difference between a floor and a ceiling is minimized.
• The destratificators are designed to reduce heat losses and heating costs.

The destratificator is mounted with an arched fixing bracket with position fixation pitch each 15° and a thread-connected mounting and a safety ropes, each 3 m long.

• The destratificator is equipped with a single-phase asynchronous external rotor motor and an axial impeller.
• The motors have built-in overheating protection with automatic restart.
• The motors are equipped with ball bearing.
• Ingress Protection Rating IP 44.

• Step or smooth speed control with a thyristor or autotransformer speed controller.
• One speed controller is able to control several destratificators on condition that the total power and operating current do not exceed the controller rated parameters.

• The destratificator selection is based on the assumption that the destratificator operation distance correlates to the premise height as 1:1.25. Number of the destratificators to be installed in the premise is selected on the assumption that the total air capacity is 1 to 2 premise volume.

• The destratificator is for indoor installation in weather-protected premises.
• The destratificators are designed for mounting under a ceiling with a directing nozzle downwards.
• The destratificator must be either rigidly fixed to a bearing structure or for suspended with a mounting kit supplied with the delivery.
• The destratificator is connected to power mains via an external terminal box.
• Electric connections and installations must comply with the product manual and a wiring diagram on the terminal block.