Ventilation of the storage spaces
For all complexes, in storage spaces were used duct fans. The Swedish manufacturer Östberg,
http://www.ostberg.com.
Advantages:
• Proven performance and reliability.
• Compact with high capacity and efficiency.
• Low sound levels. Impeller with backward curved blades.
• The external rotor motor has maintenance-free sealed ball-bearings and is very energy efficient.
• For speed control, a transformer or electronic speed controller can be connected.
• Integrated motor protection. The junction box has enclosure class IP 54.
• Fan housing is manufactured from galvanized sheet steel.
• A duct connected fan can be installed outside or in damp environments.
• Easy installation in any position.