Compact in-line centrifugal fan, soundproofed and thermally insulated, with backward-curved impeller.

• Duct Diameter - 315
• Maximum Airflow - 2150 m³/h
• Sound Pressure Level (LpA) - 43dBA

The Vents KSB series design allows for application in supply and exhaust ventilation systems for commercial spaces, offices, and other public or industrial premises with high noise level requirements and limited installation space.

Installation is intended in a space above the suspended ceiling; suitable for connection with round ducts of 100, 125, 150, 160, 200, 250, and 315 mm.
The KSB casing is made of galvanized steel sheet and equipped with thermal and sound insulation; the round connecting ducts are equipped with rubber seals.

• The centrifugal fan with backward-curved impeller is driven by a 2-pole asynchronous motor with an external rotor.
• The motors have built-in thermal protection with automatic restart.
• Ball bearings with selective lubricating oil ensure quiet, maintenance-free fan operation.
• Stepless or staged speed control using a triac or autotransformer speed controller.
• Multiple KSB units can be connected to a speed controller provided the total power and operating current do not exceed the controller’s rated parameters.
• KSB Vents are designed for in-line installation within an air duct of corresponding diameter, at any point in the ventilation system and at any angle.
• Must be secured to a building using supports, suspension brackets, or fixing brackets when flexible connectors are used.
• Can be mounted in any position with respect to the airflow direction indicated by an arrow on the fan casing.
• The ideal solution for ventilating spaces that require permanent temperature control, such as greenhouses.
• The fan with an electronic temperature and speed control module provides automatic motor speed (airflow) control based on the air temperature in the duct or room.

• Speed control for setting the motor speed;
• Thermostat control for setting the temperature setpoint;

The fan is available in two versions:
with the temperature sensor integrated within the fan air duct (option U/U1);
with an external temperature probe fixed on a 4 m cable (Un/U1n).