Drive types of the Zenner
industrial fans.

• Goal of the VRZ series: high efficiency with clean and low-dust gases
• 34 basic aerodynamic types, 17 impeller diameters each
• With standard asynchronous motors, frequency converters and possible impeller modification, we offer for every operating point that lies within the VRZ characteristic field, a fan with maximum efficiency (if necessary without speed adjustment).

Application limits VRZ:

• Volume flow: from 70 m3/h to 207,000 m3/h
• Total pressure increase: from 50 Pa to 29,000 Pa
• Temperature of the pumped medium: from -20°C to +800°C
• Type of medium to be pumped: all gases and gas mixtures with the exception of some toxic, chemically aggressive as well as explosive gases,
  which belong to extreme explosion groups and temperature classes
• Explosion protection ATEX is covered by special fans
• Ambient temperature: from -20°C to +40°C or on request
• Vibration stress: for the contractually agreed areas of application
• Solids content: no solids for all VRZ impellers, selected VRZ impellers up to 20g dust per m3 air
• Operating mode: Continuous operation, unless otherwise agreed

• Aim of the VTZ series: reliable transport of solids
• 14 basic aerodynamic types, 17 impeller diameters each
• Use of standard asynchronous motors and frequency converters as well as impeller modification
  possible in order to achieve optimum and customer-specific operating points in the VTZ characteristic diagram (if necessary also without speed adjustment).

Application limits VTZ:

• Volume flow: from 70 m3/h to 66,300 m3/h
• Total pressure increase: from 50 Pa to 18,900 Pa
• Temperature of the pumped medium: from -20°C to +350°C
• Type of fluid: all gases and gas mixtures with the exception of some toxic,
  chemically aggressive as well as explosive gases belonging to extreme explosion groups and temperature classes.
• Explosion protection ATEX: covered with special fans.
• Ambient temperature: from -20°C to +40°C or on request.
• Vibration stress: for the contractually agreed areas of application
  Solids content: generally up to 200g dust per m3 air for other or more material.
• Use of special or ripping fans
• Operating mode: Continuous operation, unless otherwise agreed

• For installation in air handling units that haetheir own enclosed housing, for example as a recirculation fan in industrial ovens and drying systems.
• Equipping the impellers with a multi-diffuser to reduce energy consumption
• 8 aerodynamic types, 17 impeller diameters each
• Use of standard asynchronous motors and frequency converters as well as impeller
  modification possible to ensure optimum and customer-specific operating points VUZ characteristic diagram.

Application limits VUZ:

• Volume flow: from 30 m3/h to 130,000 m3/h
• pressure increase: from 50 Pa to 13,500 Pa
• Temperature of the pumped medium: from -20°C to +800°C
• Type of fluid: all gases and gas mixtures with the exception of some toxic, chemically aggressive as well as explosive gases belonging to extreme explosion groups and temperature classes.
• Explosion protection ATEX: covered with special fans.
• Ambient temperature: from -20°C to +40°C or on request.
• Vibration stress: for the contractually agreed areas of use
• Solids impurities: no solids for all VUZ impellers selected VUZ impellers
  up to 20g dust per m3 air
• Operating mode: Continuous operation, unless otherwise agreed