The Revolvair™, the Air Curtain System for Revolving Doors, supports the expectation that lobbies are comfortable and welcoming. Berner International announces the Revolvair™ Air Curtain System for Revolving Doors.

The RevolvAir™ allows buildings to meet the expectation that occupants can comfortably socialize, work, and hang out in the lobby. While revolving doors significantly reduce a building’s energy consumption, they are not ‘airtight’. The revolving door acts as an airlock, bringing in people, but also outside temperatures and fumes, into the lobby. When outdoor temperatures are extreme, the entrance of cold/hot air and fumes is quite noticeable.

Overall energy consumption

This ruins the ambiance of the space. When outside temperatures affect indoor temperatures, the HVAC system runs to compensate. In climates with temperature extremes, adding the RevolvAir™ over the revolving door works to negate the airlock effect. This keeps the lobby comfortable for those spending time in it. It also reduces the building’s overall energy consumption.

Specifically-sized, the Revolvair™ will fit each revolving door’s diameter, configuration, and brand perfectly

Specifically-sized, the Revolvair™ will fit each revolving door’s diameter, configuration, and brand perfectly. It blocks unwanted exterior air that gets trapped in the moving sections by creating a separating air barrier at the building’s conditioned interior. Therefore, lobby entrances are protected from outdoor air elements, infiltration of fumes and odors from the moving sections, as well as through the revolving door assembly’s gaskets and seal gaps.

Building management system

The Revolvair™ offers plenums in either concealed or aesthetically exposed configurations. These can also be installed within a bulkhead. Additionally, trim packages come standard in a white powder coating to blend in with the space. However, any hue from the RAL color chart is available as well as metal finishes, such as anodized aluminum or brushed stainless steel to aesthetically match the finishes of the revolving door.

Berner’s patented Intelliswitch™ is one of the Revolvair’s™ unique features. This digital controller is designed exclusively for air curtain operation in commercial occupied spaces. The Intelliswitch™ can operate as a stand-alone air curtain controller or it can be interlocked with any building management system (BMS). It has a time clock, time delay, built-in thermostat, 10-speed fan control, and other integrated features so that end-users can customize their air curtain functions.

Air curtain performance

Electric heating utilizes Berner’s patented Venturi Heater, the efficient electric heater for air curtains

The new ‘Berner APP’ wi-fi mobile application for smartphones can also monitor and program Intelliswitch™ functions. The air curtain can be activated by the revolving door manufacturer’s interlock, the BMS, or motion sensors. The 10-speed fan feature, facilitated by an energy-efficient 1/2-hp motor and direct-drive fan blower, is critical. It allows for the proper air curtain performance and balance of volume, velocity, and uniformity (VVU Balance).

As there is no wind/air pressure difference for the system to overcome, the flexibility of the Intelliswitch™ allows for lower motor speeds. This, in turn, allows the system to provide enough CFM at the proper velocity to reach the threshold, without overdoing it, so that the air screen forms. Electric, steam, and hot water coils are available as heating options to improve the air comfort for employees and patrons near the revolving door. Additional heat offsets thermal losses within the door enclosure itself, as well. Electric heating utilizes Berner’s patented Venturi Heater, the efficient electric heater for air curtains.

Lightweight modular sections

Other RevolvAir™ features are:

  • Factory assembled and tested, then shipped as easy-to-install, lightweight modular sections. These consist of the air curtain, transition plenum, and discharge plenum
  • Utilizes many proven components, technologies and quality control practices used in Berner’s renowned Architectural Series
  • Factory-mounted UL-listed control panel
  • Proprietary, high-efficiency Pro-V Nozzle design strategically discharges air to meet the floor at the threshold or ‘break’ for a total air seal around the opening
  • Intelliswitch is RoHS compliant
  • Parts warranty is five years—ambient; two years—heated

The Berner RevolvAir™ is the first air curtain system for revolving doors designed and engineered by a U.S. manufacturer.

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