Helios RDD 400/6 Centrifugal Roof Fan

The new roof fans in series RD discharge horizontally and they are also characterised by extremely flexible applications.

Ideal for residential, workplaces or public buildings.

Outstanding properties:
18 EC-types from 670 to 17,750 m3/h.
22 AC-types from 550 to 26,100 m3/h.
Ideal area of application: Residential buildings, work-places, public buildings.
Horizontal discharge direction.
Pre-mounted isolator switch (up to DN 250: terminal box) and integrated motor protection as standard.
All types are speed controllable with demand-based operation thanks to a variety of sensors.

Application example: Central residential ventilation without heat recovery in an apartment building with multiple units and internal ba-throoms. Application example Apartment building:If a shower is taken in an apartment, for example, the Helios Extract air element AE Hygro measures the increasing humidity and regulates the air volume via the opening valve. The Fan RD increases the speed and airflow accordingly with the help of the Helios Differential pressure controller EDR. The Helios Supply air element ZLA quietly supplies the required filtered fresh air from outside. The moisture is removed immediately. This is registered by the AE Hygro sensor. The roof fan then switches back to basic ventilation. This takes place at low speed and it is extremely energy-efficient due to the variably controllable and economical EC motors. The efficient system of sensors and constant pressure control always ensures the exact amount of air for the entire building, individually for each residential unit.