Centrifugal duct fan VK range
Ductfan VK range
VK fans are applied for supply and exhaust ventilation systems of commercial, office and other premises. Compatible with Ø 100, 125, 150, 200, 250 and 315 mm round air ducts. Models marked VK...Q are supplied with quiet motors for low-noise applications. Due to the corrosion-resistant durable plastic casing, these models are the perfect solution for the installation in exhaust ventilation systems in humid premises such as bathrooms, kitchens etc.
The casing is made of high-quality durable ABS plastic. The fans are equipped with waterproof terminal boxes. Models marked VK..R are supplied with the power cord and a plug.
The impeller with backward curved blades is powered by a single-phase asynchronous AC motor with external rotor including the following features:
• A dynamic balanced impeller with backward curved blades balanced in two planes.
• Overheating protection with automatic restart.
• Maintenance-free ball-bearings used with motors and designed for at least 40 000 hours operation. Models marked VKS are supplied with high-powered motors. Motor protection rating IP 44.
Smooth or stepped speed control can be performed by external thymistor or transformer. Several fans can be connected to one speed controller if the total power and operating current of fans do not exceed the rated controller values.
Instalation to the wall or ceiling can be performed by means of mounting brackets (included in the delivery) or with additional PVК holders (available upon request). The fan can be mounted at any angle.
Electric connection and installation shall be performed in compliance with the manual and the wiring diagram on the terminal box.
Ductfan VK......U range
The VKU fan is equipped with a speed controller module and built-in temperature sensor.
Ductfan VK....Un range
The VKUn fan is equipped with a speed controller module and external temperature sensor.
Ductfan VK......U1 range
The VKU1 fan is equipped with a speed controller module, built-in timer and temperature sensor.