MegaBox – centrifugal fan With swing out fan impeller and easy access spiral casing for cleaning withoutany problem. Air flow temperatures upto +100 °C. Robust design for rough operating conditions and versatile operation e.g. for kitchen extraction in commercialkitchen. Pages 130-141 New „world champion“ in energy saving KWL with heat recovery Innovative fan technology, coupled with highly efficient heat exchange units lead to high unit efficiency. Such units areideal for the essential ventilation of lowenergy and passive houses. Air intake and extract terminals(for roof and wall installation). Air intake terminals and grilles withconstant air flow volume control. Helios offer the system solution Extraction treminals with humidity and time control, as well as constantair flows. The ventilation unit is only one component of many in a KWL system.It needs more for an effective and successful installation. There is the requirement of components that are specially designed for the purpose.Helios has the range for that and now offer: Airtight backdraught shutter and fireprotection units with extract and intake air over one central ductsystem. Automatic comfort controller withweek timer program for ventilationand temperature control of the unit.Pages 66-73 Air distribution systems made fromgalvanised steel flat ducts or frompolymer flat ducts with all requiredduct components and distributingboxes for installation in ceiling, walland floor. Page 256

Fire protection. Safety for every case.

Fire protectionsleeve BSH For ventilation systems K 90-18017 Fire shutters BAFire protection –valves BTK 90-18017, K 90-4102 Shutters to prevent transfer of fire and smoke Low-priced and maintenance free. Prevents transfer of fire and smoke. Can be used forinstallation in mixedservice shafts in ventilation ducting and openings. Pages 264-270 . Page 58
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