Air-handling unit, AHU, rooftop unit, roof top unit, ventilation unit, air conditioning, fan

Get more out of your air handling units

New legislation being passed around the world, including more stringent efficiency standards on Roof Top Units in the US and Ventilation Units in Europe, will require variable speed controls on most air handling units. Additionally, some of the standards require visual warnings for changing of installed filters to ensure operating efficiency. Danfoss AC drives are uniquely suited to meet these needs and more.

Air filter monitoring for AHUs

Meeting the requirements for visual filter monitoring can be a costly addition, especially when requiring an external enclosure to house the pressure sensor. To make the addition of these pressure sensors easier and more cost effective, we’ve developed the VLT® Pressure Transmitter PTU 025 option. This option, featuring three pressure ranges up to 2500 Pa, can easily be attached directly to the VLT® HVAC Drive without the need for an additional external enclosure.

Pressure to flow conversion

You can cut down on air conditioning instrumentation by using Danfoss drives to provide a fixed flow or fixed differential flow, eliminating the need for an external flow sensor. As a result, you optimize your energy consumption and reduce system complexity whilst at the same time improving comfort levels.

Fire safety

In the event of a fire, the fire override mode safety feature prevents the drive from stopping to protect itself. Instead it will continue vital fan operation regardless of control signals, warnings or alarms. Fire override mode is critical for ensuring that people are able to more safely evacuate a building in case of a fire.

Minimized energy consumption for Friends Arena

200 Danfoss drives optimize energy control for the fans and pumps, and improve safety in Sweden’s biggest stadium.

Contact us

For further information please contact us

Case studies

  • Cool tech for ice hockey ensures perfect match conditions
    Cool tech for ice hockey ensures perfect match conditions

    When talking about ice hockey arenas, whether you are a player or a spectator, you’re always on the winning team with Danfoss.

  • Equinix server rooms – Totally reliable air conditioning
    Equinix server rooms – Totally reliable air conditioning

    Equinix connects the world’s leading businesses to their customers, employees and partners inside the most interconnected data centers.

  • High-performance tunnel ventilation despite long cables
    High-performance tunnel ventilation despite long cables

    800 m of unscreened motor cable, interference free? Micheville Tunnel used VLT® HVAC Drive to achieve a high-efficiency, low-harmonic solution featuring exactly this. They even reduced costs by eliminating a voltage booster transformer.

  • World’s greenest hotel uses 60% less electricity
    World’s greenest hotel uses 60% less electricity

    VLT® HVAC Drive helps Crowne Plaza Copenhagen Towers hotel optimize energy efficiency and cost effectiveness.

  • Danfoss and Inertech change future of data center cooling
    Danfoss and Inertech change future of data center cooling

    New solution enables expansion without compromising security, consumes less energy and water, and costs less than traditional chiller plant.

  • Major energy and cost savings for multiplex cinemas
    Major energy and cost savings for multiplex cinemas

    By enhancing control of air-handling units, VACON® 100 FLOW and VACON® 100 X drives provide major energy and cost savings.

Products

  • Enhanced VLT® HVAC Drive FC 102
    VLT® HVAC Drive FC 102

    This tough and savvy FC102 drive enhances pump and fan applications in building management systems, and runs outdoors in most climates.

  • VACON® 100 FLOW
    VACON® 100 FLOW

    Dedicated functionality that improves flow control and saves energy in industrial pump and fan applications.