Centrifugal roof fans VENTS VKH - official VENTS website

Description
Modifications
Capacity diagram
Downloads
Designation key

Description

APPLICATION

Exhaust ventilation system for various premises suitable for roof mounting.
Compatible with Ø 200-630 mm air ducts.
Suitable for any roof types as well as vertical ventilation shafts.

MOTOR

2-, 4- or 6-pole single- or three-phase asynchronous motors with an external rotor and impeller with backward curved blades.
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.
Motors protection rating IP44, IP54.

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.

DESIGN

The fan casing is made of steel with polymeric coating (VENTS VKH models), aluminum (VENTS VKHA), galvanized steel (VENTS VKHz).

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.

VKH fan store roof ventilation example

Modifications

Modification name

VKH 6E 400

VKH 2E 220

VKH 4E 250

VKH 6E 500

VKH 6D 560

VKH 4E 400

VKH 6D 500

VKH 4D 310

VKH 4D 400

VKH 2E 225

VKH 4E 280

VKH 2E 190

VKH 4E 450

VKH 6D 630

VKH 4D 560

VKH 4E 355

VKH 6E 450

VKH 2E 250

VKH 2E 310

VKH 4E 225

VKH 4D 450

VKH 6D 710

VKH 6E 560

VKH 4D 355

VKH 4D 500

VKH 4E 310

Capacity diagram

Selection method:
Air flow:
Pressure:

Operating point

Air flow: --
Pressure: ---

Downloads

Designation key

Series and modification	Casing material	Motor modification		Turbine standard size
		Number of poles	Phase
VENTS VKH: horizontal air exhaust	_: steel with polymeric coating А: aluminum z: galvanized steel	2 4 6	Е: single-phase D: three-phase	190; 220; 225; 250; 280; 310; 355; 400; 450; 500; 560; 630; 710

Centrifugal roof fans VENTS VKH series