Birdwell Model BTB-VD Single - Package Variable Damper Explosion Proof Wall Mount Air Conditioners
ETL Listed
1, 1-1/2, 2, 2-1/2, 3, 3-1/2, 4, 5, 6, 7-1/2, 10, 15 Tons.
Nominal Sizes
BTB-VD

ETL
These significant features assure ease of installation plus performance and serviceability...
  • ETL certified by Intertek Testing Services to be in compliance with applicable UL and CSA codes and standards for Class I of II, Division I or II hazardous locations (general purpose optional).
  • Motorized Variable Damper to meet NFPA 496 (60) fpm exit velocity requirement.
  • Optional matching building mounting frame for quick and inexpensive installation cost.
  • Entire unit cabinet constructed of 16 gauge type 304 (type 316 optional) stainless steel with stainless steel handles for maximum protection from corrosive environments.
  • Explosion proof full hermetic compressor (Div. 1 units).
  • Explosion proof evaporator and condenser fan motors (Div. 1 units).
  • High voltage electrical controls are in one NEMA 7 explosion proof control box.
  • Low voltage electrical controls are served by an intrinsically safe relay.
  • Evaporator and condenser coils have copper tubes and aluminum fins.
  • Optional Heresite baked phenolic or epoxy coil coatings for corrosion protection.
  • High efficiency compressor has internal pressure relief valves and crankcase heater.
  • Thermostatically control 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 panels and external grills.
  • Service valve with pump-down capability.
  • External refrigerant sight glass with moisture indicator for aid in servicing system.
  • Optional supply/return grilles.
  • Standard low ambient operation to 20°F.
  • Optional explosion proof electric heat.
  • Also available in water cooled models.