Centrifugal roof fan VENTS VKV 4E 225 - official VENTS website

Description

APPLICATION

DESIGN

The fan casing is made of steel with polymeric coating (VENTS VKV models), aluminum (VENTS VKVA), galvanized steel (VENTS VKVz).

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.

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.
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.

Characteristics

Parameter	VKV 2E 225	Measurement unit
Frequency	50	Hz
Phase	1	˜
Power	49	W
Voltage	230	V
A	0.22	A
Air capacity	738	m³/h
EC motor	no	-
RPM	1400	min^-1
Noise level at 3 m	45	dBА
Design	centrifugal	-
Motor protection rating	IP44	-
Transported air temperature	-25 ... +50	°С
IP Code	IP X4	-
Number of poles	4	-
SEC Class	B	-
Weight	7	kg
Outdoor mounting	yes	-
Sound-insulated casing	no	-
Type	exhaust	-
Mounting	for roof	-

Capacity diagram

Operating point

Files archieve

Downloads

Dimensions

Characteristics

Designation key

Series and modification	Casing material	Motor modification		Turbine standard size
		Number of poles	Phase
VENTS VKV: vertical 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

VENTS VKV 2E 225