Item Number: 3640
Motor outside of the air stream
Max temperature of transported air 120°C
Suitable for coastal applications
Wide range of accessories
The octagonal casing is manufactured from seawater resistant aluminium. The base frame consist of galvanised steel. The impeller with backward-curved blades is also manufactured from galvanised steel.
The fan is equipped with IEC flange electric motor with degree of mechanical protection IP 54 or 55, insulation class F. Two speed motors as Dahlander (4-8, 6-12) or with separate windings (6-8, 4-6, 8-12). Motor cooling with fresh air via air duct. Thermal motor protection on request (PTC) - exception motors size 180 and 200, which have serial built-in PTC (visible in wiring diagram). For frequency controlled units PTC must be ordered. For smaller two speed fans (up to 10A) two speed switch is available as accessories (in this case thermal contact must be ordered; not suitable for PTC or without thermal contact). Connection the fan to the mains in service switch (serial at sizes 800 and 1000) on the casing. Other sizes equipped with terminal box, service switch on request. EMC protected cables, cable glands or service switches on request.
On request fan can be factory fitted with sound attenuator on outlet as DVVI/120 fan. Sound attenuators are also available as HSDV accessories.
Note (for EU market only): not affected by efficiency provisions of Commission Regulation (EU) No 327/2011 - exception 3 (c) (i) (a).
|Motor circuit connection||Y|
|Air flow||max 5.0||m³/s|
|Temperature of transported air||max 120||°C|
|Sound pressure level at 10m (free field)||60||dB(A)|
|Sound pressure level at 4m (free field)||66||dB(A)|
|Enclosure class, motor||IP55|
|Dimensions and weights|
|Duct dimension; Circular, inlet||630||mm|
|Duct dimension; Circular, outlet||630||mm|
|Duct connection type||Circular|
Roof fan, vertical discharge.
Octagonal casing and motor encapsulation made of seawater resistant aluminium, insulated, with bird protection grid.
Inlet nozzle made of galvanised steel sheet.
The air stream is carried out through annular space between the casing and the motor housing.
The fan has an electroplated backward curved radial impeller made of steel sheet, single inlet. With hub and secured bolted joint directly assembled on the motor shaft. Impeller acc. to VDI 2060, balancing quality Q 6.3, dynamically balanced acc. to ISO 1940 T1.
Internal rotor motor, IEC with flange, 2-speed, separated, pole changing windings. Motor cooling with an insulated fresh air duct, negative pressure system.
Suitable for medium temperatures up to 120 °C. Motor protection on site.
Terminal box (IP55) on the casing.
For outdoor installation above heated rooms.
Vertical installation position.
Snow load class 0.
according to DIN 24154R3.
DIBt approval, certificate available