Noise Data; Design - Helios B AVD Série Notice De Montage Et D'utilisation

Installation and Operating Instructions
* (performance and noise data from the
currently valid Helios documents and the
internet)
CHAPTER 3
INSTALLATION
¬ ¬ ¬
B AVD
Smoke Exhaust Fans F300/F400/F600 – B AVD and B VAR
2 .7

Noise data

The noise data* also refers to the aforementioned directive. Casing variations, unfavourable operating conditions and
many other things can lead to an increase in the specified catalogue values. Data that refers to certain distances (1
m, 2 m, 4 m) apply to free field conditions. With regard to installation, the sound pressure level can differ significantly
from the catalogue data, as it is highly dependent on the installation conditions, i.e. on the absorption capability of the
room, the room size among other factors.
3 .0

Design

Series B VAR 280-1000 F300 / B VAR 500-1000 F400
The high-pressure smoke exhaust duct fan is a direct-driven fan where the motor is positioned in the airflow. The air
flow direction is blowing via the motor. The axial flow pattern allows a low-loss, linear airflow and ensures a high fan
efficiency. The cylindrical casing with flanges on both ends, integrated guide vane and motor support are made from
galvanised sheet steel.
The semi-axial impeller with eight curved blades is made from galvanised sheet steel or B VARD 280-315 F300 made
of aluminium. The dynamic balancing is carried out according to DIN ISO 21940-11:2017-03, G 6.3.
Technical data: IEC three-phase motors, 400 Volt, 50 Hz, IP 55, insulation class H
Series B VAR 500-1000 F600
Like above, but motor is encapsulated and additional supply air fan required.
Series B AVD 500-1250 F300 / F400
The low-pressure axial smoke exhaust fan is a direct-driven fan where the motor is positioned in the airflow. The
air flow direction is blowing via the motor. The axial flow pattern allows a low-loss, linear airflow and ensures a high fan
efficiency. The cylindrical casing with flanges on both ends, integrated guide vane and motor support are made from
galvanised sheet steel.
The high-performance impeller with nine profiled blades is made from aluminium. The dynamic balancing is carried out
according to DIN ISO 21940-11:2017-03, G 6.3.
Technical data: IEC three-phase motors, 400 Volt, 50 Hz, IP 55, insulation class H
Series B AVD 500-1250 F600
The cylindrical casing with flanges on both ends, integrated guide vane and motor support are made from galvanised
sheet steel. The motor is encapsulated and an additional supply air fan required. The high-performance impeller with
five profiled blades is made from galvanised sheet steel. The dynamic balancing is carried out according to DIN ISO
21940-11:2017-03, G 6.3.
Technical data: IEC three-phase motors, 400 Volt, 50 Hz, IP 55, insulation class H
Overview: Smoke exhaust fan B VAR.. with accessory parts (horizontal)
Mounting bracket MK
Duct silencer RSD
Inlet nozzle ASD-SGD
Vibration damper SDZ
for tensile load
B VAR
Vibration damper SDD..
for pressure load
5
Fig .3
Protection grille SG
Counter flange FR
Flexible connector STSB
Duct shutter
RVS
Extension duct VR (optional)
- Required for protruding motor
see section 3.10
Mounting bracket MK
EN