RECTANGULAR INLINE FANS

Product catalog summary

Applications: The document outlines ventilation systems designed for spaces with limited mounting areas, compatible with rectangular air ducts from 400x200 mm to 1000x500 mm.

Design: The fan casing is made of galvanized steel, with VKPFI models featuring 50 mm mineral wool for sound and heat insulation.

Motor: Fans are equipped with forward-curved blade impellers and 4-, 6-, or 8-pole external rotor asynchronous motors, offering high airflow and differential pressure. They include thermal contacts for overheating protection and ball bearings for durability, with a protection rating of IP 44.

Speed Control: Fans support smooth or step speed control via thyristor or autotransformer controllers, allowing multiple fans to connect to a single controller within power and current limits.

Mounting: Designed for inline mounting in rectangular ducts, fans require no special fixing unless flexible connectors are used, in which case supports or brackets are necessary. They can be mounted in any position with maintenance access.

Series and Models: The VENTS VKPF and VKPFI series are detailed, with various models offering different motor modifications and flange diameters. VKPFI models have insulated casings.

Technical Data: Extensive technical data is provided, including voltage, power, current, maximum air capacity, RPM, noise levels, air temperature, and protection ratings, with all models rated at IP X4.

Dimensions and Weight: Dimensions and weights for each model are detailed, showing differences between VKPF and VKPFI models.

Sound Power Levels: Sound power levels across octave-frequency bands are included, indicating noise levels at the inlet, outlet, and environment.

Catalog excerpts

Series Inline centrifugal fans with the air capacity up to 9540 m3/h for rectangular ducts Inline sound- and heat-insulated centrifugal fans with the air capacity up to 9540 m3/h for rectangular ducts Applications Supply and exhaust ventilation systems for various premises with a limited mounting space. Designed for connection with 400x200, 500x250, 500x300, 600x300, 600x350, 700x400, 800x500,900x500, 1000x500 mm rectangular air ducts. Design The fan casing is made of galvanized steel. VKPFI models are sound- and heat-insulated with 50 mm layer of mineral wool. Motor The impeller with forward curved blades made of galvanized steel is powered by 4-, 6- or 8-pole external rotor asynchronous motor. Such modification ensures high air flow 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 Smooth or step speed control with a thyristor or autotransformer speed controller. Several fans may be connected to one speed controller provided that the total power and operating current do not exceed the rated speed controller parameters. 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. Motor modification E - single phase D - th ree phases ErP data Overall efficiency n, [%] Variable speed drive VSD VENTS. Industrial and commercial ventilation | 02-2016

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