Anti-vibration mounts SDZ
Anti-vibration mounts SDZ
What types of fans are there?
The most common types of fans are roof fans, duct fans, wall-mounted fans, and axial fans. They differ from one another in terms of design, application, and installation method.
What do the letters in Helios by Vallox fan model names mean?
- Roof Fans
VDDT120 = Designed to withstand continuous airflow temperatures of up to 120°C
B VDD = Smoke extraction fan + ventilation
VDD Ex (ATEX) = For use in explosive atmospheres (hazardous areas)
VD = Traditional AC roof fan
2. Axial Fans
AMD = Axial fan with a three-phase motor
AMW = Single-speed axial fan
HFRW EC = Axial fan with an EC motor
HQW / HWW = Wall-mounted fan
3. Duct Fans
VARD = Three-phase duct fan
VARW = Single-phase duct fan
What types of applications are different fans suitable for?
Vallox offers solutions for continuous ventilation, smoke extraction, ATEX-classified hazardous areas, and T120-rated applications, where the fan is designed to withstand a continuous operating temperature of 120°C.
Does a building require one fan or multiple fans?
In small ventilation systems, a single fan may be sufficient. However, in larger buildings, multiple fans are often used to ensure even air distribution and operational reliability.
How do I choose the right fan?
The selection is based on the required airflow rate, pressure loss, noise requirements, and the installation environment. A suitable fan can be selected using the Exxeo Select or Helios Select selection software.
How much pressure loss can a fan handle?
The ability to handle pressure loss depends on the type of fan and its sizing. A correctly selected fan ensures sufficient airflow even in demanding duct systems with higher pressure losses.
Are the Vallox fans quiet?
The noise level of fans depends on the airflow rate, the type of fan, and the installation location. Noise levels can be influenced through proper sizing and by adding sound attenuators.
Detailed sound level data for specific models can be found in the product information on the website.