Systemair DVN 630D4 SA - Centrifugal roof fan, 120°C continuous, vertical discharge

• High efficient motor • Speed-controllable via frequency converter • Integral cold conductor (PTC) • Standard motor outside the air stream • Max temperature of transported air up to 120°C • Suitable for coastal applications • Vertical exhaust • Low sound level • Easy to maintain and reliable The DVN fans are equipped with high efficient motors. The casing and impeller with backward-curved blades is manufactured from seawater resistant aluminum. The base frame is manufactured from galvanized steel sheet and the integrated protection guard consists of powder-coated galvanized steel. Speed control is only possible by using a frequency converter. Motor protection is done by cold conductors (PTC), which have to be connected to an external motor protection device. The motor is suspended on effective vibration dampers. Please note: Speed controll by voltage,i.e.voltage transformers, is not possible