SquareLine centrifugal fans SQLW.. This unit is specially designed for medium air flow volumes against high resistances and installation in circullar ducting. Due to its minimum height it is suitable for tight spaces like ceiling voids in commercial and industrialapplications. Helios SQLW offers an excellentperformance in nominal diameters100 mm – 315 mm:

New from Helios.

Energy saving solutions for the new millennium.

Energy saving ventilation box ZEB EC The new Helios system solutions forsingle or central ventilation units set new standards.The ELS range has been enlarged. Intelligent fan technology with individually adjustable air flow volume steps combined with air outlet and air intakeelements that react to offer the optimumin cost effectivity for the ventilation of residential buildings (low energy houses as well as passive houses) and apartments.This concept is lower than the requirements that the EnEV has relating to apartment ventilation and gives high living comfort with minimized costs.Pages 60-65 An additional model has been added tothe successful mono tube system. The new Helios VEF-AL system technic where the variable, humidity controlled air flow volume is optimised, specially inthe low energy house.There are new air intake elements ALEF.. and ZL.. available for controlled make up air. The VEF-AL system see pages 38-59 Compact design to minimise spaceand cost. Key hole fixing points offer fast andeffective installation. Quick fixing plate supplied with the unit assist a faster installation. 100% speed controllable. Matching range silencers to suit, offering the same space savingheight as the fan. Air outlet AE
with options on function: Extensive range of accessories including speed controllers, pipeclamps, antivibration mountings. –constant air flow volume–Variable, humiditycontrolled volume–General and trickleventilationPages 258-26 Twin fan applications can be met with two fans in series clampedtogether offering 100% standby. Units can be mounted for top orbottom access. Constant air flow controller VKH To be inserted in ductin Simple electrical connection via achoice of knockouts in the casing.For more information see pages 166-168 g with nominal diameter 80 to 200 mm, air flow volume 15 to 500m
3 /h.Pages 254-25 5 Air intakes AL and ZL For window and wallinstallation. Pages 57,6 4
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