FEATURES

For mounting heights to 20′ (environmental separation) and 18′ (insect control).

The Berner Hazardous Location Series 20 Air Curtain is designed and manufactured to comply with ANSI/NFPA-70 National Electrical Code (NEC) for Electrical Equipment: Class I, Division 1 and 2, Groups C and D for gases.

  • Used in areas where gases may create a hazardous situation to keep temperatures stable and flying insects out when the doors are open.
  • Engineered to perform and built to last
  • Simple to install, operate, and maintain
  • Made in U.S.A.

Available in single lengths from 5′ to 16′

AMBIENT

  • Constructed for Class I, Division 1 & 2, Groups C & D
  • 21″ high x 34″ deep
  • Explosion-proof single-speed motor(s) temperature code T3C
  • Interior and exterior gray zinc epoxy powder-coated aluminized steel cabinet with aluminized steel expanded metal screen
  • Split cabinet construction for fan assembly removal
  • External Mount Explosion Proof Junction Box (one per motor)
  • Aluminum impellers in a matching housing
  • Top and bottom mounting only
  • High efficiency Pro-V Nozzle

STEAM/HOT WATER HEAT

  • Constructed for Class I, Division 1 & 2, Groups C & D
  • 21″ high x 34″ deep
  • Explosion-proof single-speed motor(s) temperature code T3C
  • Interior and exterior gray zinc epoxy powder-coated aluminized steel cabinet with aluminized steel expanded metal screen
  • Split cabinet construction for fan assembly removal
  • External Mount Explosion Proof Junction Box (one per motor)
  • Aluminum impellers in a matching housing
  • Top and bottom mounting only
  • High efficiency Pro-V Nozzle
Coil features:
  • Aluminum casing
  • 5/8″ copper tube x .035″ wall
  • Aluminum fins
  • Leak tested at 450 psi

Accessories

This model requires an activation switch and a control panel.

CONTROL PANELS

Three-Phase Control Panels:

All three-phase power supplies require a three-phase control panel, remote (standard) or factory mounted, and an activation switch.

Standard Control Panel Construction:

Hazardous Location

  • UL Classified NEMA 7 & 9 Aluminum Enclosure for Use in Class I, Division 1 & 2, Groups C & D Applications
  • IEC Style Contactor, Solid State Adjustable Motor Overload(s), Control Transformer w/ Primary and Secondary Fusing (120V Control Voltage), Fusing (as required), Terminal Strip, and Time Delay or 24V Control (as required)
Standard Control Panel Construction:

Non-hazardous Location

  • NEMA 4/12 Enclosure, Motor Contactor (factory wired), Motor Overload(s), 120 V Control Transformer, and Time Delay or 24 V Control (as required)
  • Optional control panel enclosure constructions: poly fiberglass, aluminum, stainless steel

Control Panel Accessories

Hazardous Location

  • Hand/off/automatic switches
  • Start/stop push button(s)
  • 24 V control
  • Time delay

Non-Hazardous Location

  • Disconnect switch(es) — toggle disconnects based on number of power supplies required

Electrical Accessories

Hazardous Location

  • Door switches: side plunger style
  • Hand/off/automatic switches
  • Start/stop push button(s)
  • Remote thermostat

Mechanical Accessories

  • Wall support brackets
  • 12″ extension brackets
  • 2″ washable aluminum filters with frame