Inline sound- and heat-insulated centrifugal fans with forward curved blades and the air capacity up to 9540 m3/h. Designed for supply and exhaust ventilation systems. Compatible for connection with rectangular air ducts with cross sections 400х200, 500х250, 500х300, 600х300, 600х350, 700х400, 800х500, 900х500, 1000х500 mm.
VENTS VKPFI series
Product Description
Applications
Supply and exhaust ventilation systems for various premises with a limited mounting space. Designed for connection with 400×200, 500×250, 500×300, 600×300, 600×350, 700×400, 800×500, 900×500, 1000×500 mm rectangular air ducts.
Design
The fan casing is made of galvanized steel. VKPFI models are heat- and sound-insulated with 50 mm layer of mineral wool.
Motor
The impeller made of galvanized steel with forward curved blades is powered by means of 4- or 6-pole external rotor asynchronous motor. Such modification ensures high airflow capacity and relatively significant differential pressure. For thermal overheating protection the thermal contacts with leaded outside terminals are incorporated in the motor winding for connection with the external protection devices. The motor is equipped with the ball bearings for long service life. For precise features, safe operation and low noise, each impeller is dynamically balanced while assembly. Motor protection rating IP 44.
Speed control
Both smooth or step speed control is performed with thyristor or autotransformer controller. Several fans can be connected to one controller in case their total power and operating current do not exceed the controller rated values.
Mounting
The fans are designed for inline rectangular air duct mounting and require no special fixing in case of direct connection. In case of connection through the flexible connectors the fan is fixed to a building by means of supports, suspension brackets or fixation brackets. The fans can be mounted in any position with respect to the pointer direction on the casing. Access for the fan maintenance shall be provided. The fan is powered through the external terminals. The casing is provided with the removable access door for maintenance.
