Tow-air® ECC centrifugal fans are designed for direct or ducted ventilation of civil and industrial buildings, where large volumes of air have to be extracted at medium pressures, for roofing applications.
They are realized with backward curved blade impeller and extremely wide radius inlet cone which guarantee high efficiency. Built with weather resistant materials, their installation is facilitated by GFPR or metallic upstands, for flat or curved roofs, compatible with corrugated roofing sheets.
The fan is composed of: lifting brackets; upper cover made of plastic material; upper cover support brackets;
UNEL-MEC series motor, IP 55 protection rating, F insulation class, service S1; motor support; high efficiency backward curved blade impeller made of galvanized steel sheet; protection external grid, made of weather resistant steel wire; grid brackets; support ring made of weather resistant steel sheet, suitable for overpressure damper insertion and base installation; inlet protection grid (optional), necessary for use in free air.
Some accessories are available upon request: inlet gravity shutter; internal protection grid; service switch; inlet silencer; GFRP or metallic upstand, for flat or curved roofs.
Following versions are available upon request: ATEX version; PSO-TC F400 version (for smoke and heat exhaust ventilation in case of fire); ECC/FV vertical air flow version; version with double polarity electric motor; version with metal sheet cover.
Our fans, that are produced in various sizes, fall within the scope of Directive 2009/125/EC Energy-related-Products and comply with Regulation (EU) No 327/2011, which defines minimum energy efficiency values for European market.