| Series and modification | Casing material | Number of poles | Phase | Turbine standard size | ||||
|---|---|---|---|---|---|---|---|---|
|
VENTS VKH – horizontal air exhaust |
_ steel with polymeric coating A – aluminum z – galvanized steel | 2, 4, 6 |
E- single phase; D - three phases | 220; 225; 250; 280; 310; 355; 400; 450; 500 |
Centrifugal roof fan VENTS VKH series
Centrifugal roof fans in the steel casing with the horizontal exhaust of air and the air capacity up to 4700 m3/h. Designed for exhaust ventilation systems.
Applications
Exhaust ventilation system for various premises suitable for roof mounting. Compatible with Ø 200 to 500 mm air ducts. Suitable for any roof types as well as vertical ventilation shafts.
Design
The fan casing is made of steel with polymeric coating (VKH model), aluminum (VKHA), galvanized steel (VKHz).
Motor
The centrifugal impeller with backward-curved blades is mounted directly on the two-, four - or six-pole single- or three-phase asynchronous motor shaft. The motor is equipped with thermal overheating protection with automatic restart as well as ball bearings for long service life. For precise features, safe operation and low noise, each turbine is dynamically balanced while assembly. Motor protection rating IP 44.
Speed control
Both smooth or step speed control is performed by means of the thyristor or autotransformer controller. Several fans can be connected to one controller in case the total power and operating current do not exceed the rated controller values.
Mounting
The fan is mounted on the roof directly above the ventilating duct or shaft and is firmly fixed to the flat surface by means of a connecting plate. While mounting VKH fans directly onto the flat roof a supporting block shall be provided to prevent water and snow drops into the vent of the ventilation shaft.
Electrical connection and installation shall beperformed in compliance with the manual and circuit diagram on the terminal box.
For connection of the fans to round air ducts use the following accessories: KKV damper, GVK flexible connector, FKV counter flange. For mounting of the fans to flat surface use the mounting frame RKV.
Mounting example
VENTS VKH fan store roof ventilation example.
Brochure "Roof fans accessories"
( PDF 195,86Kb )- Declaration of сonformity "VKV,VKH"
( PDF 1,68Mb ) - User's manual "VENTS VKH"
( PDF 407,01Kb )
- Brochure "VENTS VKV, VKH"
( PDF 816,96Kb ) 
Download high quality image "VENTS VKH"
( PSD 4,05Mb )