Keep your essential HVAC systems up and running
We are operating in a time of extremes. Whether your facility is ramping up operations to keep up with increased demand, or unexpectedly empty due to a shift to remote working conditions or closures, Danfoss can help you keep your HVAC systems running efficiently so you can focus on business. Our trained experts are here to assess the lifecycle of your equipment, and provide a tailored solution to maximize uptime, efficiency, and savings.
Proven leader in HVAC
AC drives are installed on a daily basis in various heating, ventilation and air conditioning (HVAC) and water-boosting applications in new and existing buildings and infrastructural systems all over the world. They enhance air quality and indoor comfort levels, improve control and energy-saving possibilities, ensure better asset protection, reduce maintenance costs and increase reliability.
The daily load variation in HVAC facilities is considerable. Variable speed control of electrical motors has proved to be one of the most effective cost-reducing measures available. By reducing the average speed of a motor in, for example, a pump or fan by 20%, energy savings of 50% can be achieved. Reducing the average speed by 50% increases the savings to 80%.
Maximize uptime with Condition Based Monitoring
See how you can turn the frequency drive you already have into the smartest sensor in your system. A sensor that enables predictive and condition-based monitoring (CBM) capabilities, processes data on the edge, and sends data wherever it’s needed. Explore how intelligent drives solve potentially critical problems in HVAC applications.
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Calculate savings with Energy Box software
zipVLT® Energy Box software calculates, as accurately as possible, the cost, savings and payback time of using Danfoss AC drives in HVAC fan and pump applications. The tool allows you to compare the energy consumption of HVAC fans and pumps driven by Danfoss drives with alternative methods of flow control.
Reduce total cost of ownership
Lifetime energy costs have a major impact on total cost of ownership. Even small reductions in energy use can provide vast cost savings over a relatively short timeframe. Seen over its lifetime, the initial cost of an AC drive only amounts to 10% of the total cost of ownership; the remaining 90% covers energy consumption, service and maintenance.
Features, such as Automatic Motor Adaptation and Automatic Energy Optimization, ensure that your drive is always perfectly adapted to the attached motor and changing loads. And, with minimal maintenance requirements, Danfoss AC drives provide a fast return on your HVAC investment and significantly reduce your total cost of ownership.
Applications
HVAC systems regulate the heating and cooling units in a building to provide the highest levels of comfort. The conditions are controlled by several applications which all use AC drives. Here are some of the main HVAC-related applications:
Heating
- Boiler forced and induced draft fans
- Primary hot water pumps
- Fan coils
- Heat recovery systems
Ventilation
- Air handling units, rooftop units, supply and extract fans
- Variable/constant air volume ventilation systems
- Smoke ventilation, fire control and stairway ventilation systems
- Car park ventilation systems
- Kitchen ventilation systems
Cooling
- Chilled water pumping systems
- Primary/secondary pumps
- Variable flow with primary pumps only
- Fan coils
- Heat recovery systems
- Cooling tower fans, Condenser water pumps
- Chiller compressor
Fresh water
- Booster pumps
- Single or parallel pumps
Safety and compliance: Fire and smoke safety
All buildings with requirements for ‘life safety’ on essential service applications require firemode functionality. The fire mode functionality in the VLT® HVAC Drive FC 102 provides reliable and continuous operation of applications related to stairwell pressurization, smoke extraction, lift shaft pressurization and car park ventilation for safer and more effective emergency evacuation. Fire override mode protects the drive in the event of a fire, ensuring vital fan operation regardless of high temperatures, control signals, warnings and alarms.
Seismic compliance
Seismic compliance is essential for all drives running ‘life safety’ applications. The VLT HVAC Drive complies with Importance Factor 1.5. This compliance is tested in accordance with the standard ICC-ES AC-156 by the Californian Office of Statewide Health Planning and Development (OSHPD).
Electromagnetic compatibility (EMC) compliance
Danfoss provides AC drives with optimum EMC protection and integrated harmonic filters to ensure the ideal EMC environment, and cleanest power supplies are maintained throughout the operational lifetime of the system. With first-class EMC compliance, they fulfill the most stringent emission requirements:
IEC 61800-3:2004 Category C1/EN55011 Class B (residential) with 50-meter screened motor cable
IEC 61800-3:2004 Category C2 & C3/ EN55011 Class A Group 1 & Group 2 with 150-meter screened motor cable
Get more information
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Variable speed control with AC drives enables you to reduce energy consumption by running compressor applications at a lower speed.
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Facilitate ideal climate conditions around server installations, while minimizing energy consumption and CO2 emissions.
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With user-friendly interfaces, distributed intelligence and reduced power consumption, Danfoss AC drives optimize the performance of fans.
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Protect your pump and optimize commercial ventilation and air conditioning performance using AC drives.
Success stories
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POLAND: The new Danfoss production hall in Grodzisk Mazowiecki has reached carbon-neutrality, thanks to full electrification, energy-saving solutions such as Danfoss drives, and energy from renewable sources.
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DENMARK: Universe Science Park saves 80% on emissions and the power bill for its wind tunnel attraction “Beat the Storm”, with the intelligent VLT® HVAC drive.
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A huge number of Danfoss drives secure comfortable temperatures and cut down energy use inside Chile’s famous Costanera Center.
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DENMARK: Hotel Alsik is proud to be 76% CO2-neutral, with sustainable solutions reflected throughout the entirety of this magnificent hotel – from the energy-efficient solutions in the hotel rooms, the design of the building and the power supply, to the 380 m2 solar cells on the roof.
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Danfoss Drives VFD retrofit project helped the one million square foot Enercare Centre in Toronto, Canada save energy with dramatically improved pump motor efficiency, cut electricity costs, and helped achieve the center's sustainability goals.
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For the mechanical systems that manage the indoor environment in this desert city, consistency and simplicity are desirable traits. Owners of casino hotels and restaurants that operate around-the-clock require HVAC equipment that is reliable and easy to operate and maintain.
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The VLT® LHD is the first solution to combine an active filter and a drive in one package. It continuously regulates harmonic suppression according to the load and grid conditions without affecting the connected motor. The total harmonic current distortion is reduced to less then 3% on grids with balanced mains, a minimum pre-distortion to less than 5% on grids with high harmonic distortion and 2% phase unbalance. The VLT® Low Harmonic Drive meets all present harmonic standards and recommendations.
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The VLT®12-pulse drive is a high efficiency variable frequency converter which is built with the same modular design as the popular VLT® 6-pulse drives. It is offered with similar drive options and accessories and can be configured according to customer need.
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The VLT® PHD-102 Preferred Harmonic Design (PHD) is a full-featured, HVAC dedicated drive solution when conformance to IEEE-519 is required, even at the drive terminals.
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The VLT® Advanced Active Filter AAF 006 has reached the Limited phase of its lifecycle and is no longer in active production. Danfoss will help you select the optimal replacement for your application.
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VACON® 20 X has reached the Limited phase of its lifecycle and is no longer in active production. We will help you select the optimal replacement.
