8, 10, 15, 20, 30, 40 Tons
Nominal Sizes
These significant features assure ease of installation plus performance and serviceability...
  • Certified by The Birdwell Company to be in compliance with applicable UL and CSA codes and standards for various hazardous locations (general purpose optional).
  • Dual A/C units in a single package - totally redundant.
  • Variable damper control for maintaining building pressure and automatic purging to meet NFPA 496 requirement for 60 FPM through up to two open doors (2,520 CFM)
  • Chemical filter that filters all outside air and routes it through the evaporator coils and heaters before it enters the building.
  • Particulate 30% EFF. Pre-Filter and Post-Filters
  • Optional 99.99% EFF., .3 micron HEPA Filter Using Birdwell's Patented Positive Micro-Seal Sealing System.
  • Direct drive condenser fans and evaporator/pressurization blowers
  • High voltage electrical controls are in one general purpose control box.
  • Low voltage electrical controls are served by an intrinsically safe relay.
  • Entire unit cabinet (including internal parts) is constructed of 16 gauge type 304 (type 316 optional) stainless steel with stainless steel handles for maximum protection from corrosive environments.
  • Third party certificiation by ETL available
  • Evaporator and condenser coils have copper tubes and aluminum fins.
  • Optional Heresite baked phenolic or epoxy coil coating for corrosion protection.
  • High efficiency compressor has internal pressure relief valves and crankcase heater.
  • Thermostatically controlled expansion valve.
  • High and low refrigerant pressure cut-out switches.
  • Solid state time delay relay to prevent short cycling.
  • Frost control to stop compressor in the event of coil icing due to dirty filters, etc.
  • Unit is fully serviceable from access doors and grilles.
  • Service valve with pump-down capability.
  • External refrigerant sight glass with moisture indicator for aid in servicing system.
  • Standard low ambient operation to 20°F.
  • Optional electric heat.
  • Also available in water cooled models.
  • Optional programmable HVAC control panel with inputs for Smoke/Fire/Gas detection, HVAC Lead/Lag control, HVAC alarms.