Properties
- flow rates up to 36,000 m³/h
- size: 310 - 900 mm (impeller diameter)
- vertical outlet
- IEC standard motors as drive
- suitable for higher conveying temperatures
- backward curved impellers
- different models
- solid weatherproof casing
- easy to install
Casing
The casing of the Rosenberg roof fans (DVN/S, DVWN/S) consists of seawater-resistant aluminium and a base frame with integrated inlet cone.
model - DVN Base frame with integrated inlet cone made of galvanised sheet steel
and additional plastic coating
model - DVNS Casing with integrated sound insulation (S) ; base frame with
integrated inlet cone made of galvanised sheet steel and additional
plastic coating
model - DVWN up to size 500: Base frame with integrated inlet cone made of
galvanised sheet steel
from size 560: Base frame with integrated inlet cone made of
galvanised sheet steel and additional plastic coating
model - DVWNS Casing with integrated sound insulation (S), as well as plastic
coating available on request
up to size 500: Base frame with integrated inlet cone made of
galvanised sheet steel
from size 560: Base frame with integrated inlet cone made of
galvanised sheet steel and additional plastic coating
Impellers
model - DVN/DVNS High-performance impellers with backward curved blades made of
aluminium. The impellers together with the impeller hub are
dynamically balanced at two levels according to quality level
G2.5 as per DIN ISO1940. The impellers are mounted overhung
on the shaft of an IEC standard motor type B5.
model - DVWN/DVWNS Efficiency-optimised (W) high performance impellers with backward
curved blades made of aluminium. The impellers together with
the impeller hub are dynamically balanced at two levels according
to quality level G2.5 as per DIN ISO1940.
Electrical connection
The drive motors are fitted with a set-up terminal box in the protection class IP55 which is easily accessible for the electrical connection after removing the hood on the motor. Upon request, the device switch can be mounted (optional) on the casing of the fan. Motor protection via PTC thermistors.