Centrifugal roof fans with horizontal air exhaust
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.
DESIGN
- The fan casing is made of steel with polymeric coating (VENTS VKH models), aluminum (VENTS VKHA), galvanized steel (VENTS VKHz).
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.
Product Type | |
---|---|
Brand | |
Model | |
Application | Café, Home, Office, Production premises, Stores/supermarkets, Supply and exhaust ventilation |
Color | |
Material | |
Max. power (W) | |
Max. current (A) | 0.96 |
Voltage (V) | |
Phase (Ph) | |
Frequency (Hz) | |
Motor Type | |
Max. capacity (m³/h) | |
Max. noise level (dB) | |
Features | Backward-curved blades, ErP Directive Readiness, Horizontal Discharge, Speed Control |
Installation Type | |
Protection class (IP) | |
Min. temperature (°C) | -25 |
Max. temperature (°C) | 50 |
Max. speed (rpm) | |
Length (mm) | |
Width (mm) | |
Height (mm) |
Technical Data
Parameter | VKH 4E 355 50 Hz |
VKH 4E 355 60 Hz |
Measurement unit |
---|---|---|---|
Frequency | 50 | 60 | Hz |
Design | centrifugal | centrifugal | – |
Phase | 1 | 1 | ˜ |
Power | 219 | 304 | W |
Voltage | 230 | 230 | V |
A | 0.96 | 1.33 | A |
Air capacity | 2480 | 2976 | m³/h |
RPM | 1420 | 1580 | min-1 |
EC motor | no | no | – |
Noise level at 3 m | 51 | 52 | dBА |
Motor protection rating | IP54 | IP54 | – |
Transported air temperature | -25 … +50 | -25 … +50 | °С |
IP Code | IP X4 | IP X4 | – |
Number of poles | 4 | 4 | – |
Mass | 28.3 | 28.3 | kg |
Outdoor mounting | yes | yes | – |
Sound-insulated casing | no | no | – |
Type | exhaust | exhaust | – |
Mounting | for roof | for roof | – |
Downloads
Brochure “VENTS VKV, VKH”
Declaration of сonformity “VKV, VKH”
Brochure “Roof fans accessories”
User’s manual “VENTS VKV, VKH”
Dimensions
Parameter | Value | Measurement unit |
---|---|---|
∅D | 438 | mm |
∅d | 11 | mm |
A | 625 | mm |
B | 620 | mm |
C | 450 | mm |
H | 322 | mm |
H1 | 361 | mm |