Hazardgard Air Conditioners

Proven high performance air conditioning in the most challenging environments


  • ATEX and IECEX Zone 2 certified ExnA nC IIC T4 Gc
  • UL Listed for Class 1 Division 2, Groups A,B,C,D
  • Environmentally sealed on/off switch and gold plated contacts in thermostat for corrosion resistance
  • Hermetically sealed refrigeration system
  • Durable outdoor industrial electrical cable harnesses and cable glands
  • 19500 up to 24000 Btu/Hr Cooling capacity 

For more than three decades, global industry and high-tech leaders have trusted Friedrich to provide commercial-grade cooling under the harshest conditions. You’ll find durable, reliable Hazardgard room air conditioners on oil rigs and military bases, in manufacturing companies and processing plants – anywhere hazardous materials are used. Hazardgard is specifically designed to cool spaces where volatile, flammable liquids and gases are used, within enclosed systems or containers, or under extreme temperatures.

Room Sizing Guide

FT2BTU
100–1505000
150-2506000
250-3007000
300–3508000
350–4009000
400–45010000
450-55012000
550-70015000
700–100018000
1000-120021000
1200-140023000
1400–160025000
1600–190028000
1900–270036000

Temperature Classification

Electrical equipment, like hazardous location air conditioners, that may be exposed to specific, hazardous gases or vapors in the area where it will be used, cannot reach temperatures that exceed 80% of the auto-ignition temperature of those gases or vapors. The Hazardgard air conditioners have a T4 rating which means their surface temperature should not exceed 135°C or 275°F. (Note: 50/60Hz model listed as T4A for surface temperatures to 120° C/248° F).

Electrical Equipment LabelTemperature (C)Temperature (F)
T1450°C842°F
T2300°C572°F
T2A280°C536°F
T2B260°C500°F
T2C230°C446°F
T2D251°C483.8°F
T3200°C392°F
T3A180°C356°F
T3B165°C329°F
T3C160°C320°F
T4135°C275°F
T4A120°C248°F
T5100°C212°F
T685°C185°F

The above chart illustrates that 200°C is the maximum surface temperature for any electrical equipment with a temperature classification of T3 or higher.

Specifications

ModelCooling Capacity (Btu/Hr.)Volts RatedCooling AmpsCooling WattsEnergy Efficiency RatioMoisture Removal Pints/HRAir Direction ControlsAir Circulation (CFM)Refrigerant
60 H E R T Z  – P E R F O R M A N C E
SH24N20AT2400/23700230/208/6012.6/13.52727/27888.8/8.58.20/7.58-way385R-410A
50 H E R T Z – P E R F O R M A N C E
SH24N20AT21000/20500240/220-5015.0/13.22600/24128.1/8.578-way360R-410A
SH20N50AT19500/19100240-220-509.8/10.32167/21569.0/9.05.6/5.58-way425R-410A

Installation Information

Unit DimensionsWindow WidthIn-Wall Installation Finished HoleCircuit Rating Breaker or T-D FuseWeight lbs
ModelHeightWidthDepth with Front ADepth J Box to Louvers BMinimum Extensions Into RoomMinimum Extension OutsideMinMaxHeightWidthMax DepthVolts-AmpsNetShipping
SH24N20AT17 15/16″25 15/16″27 3/8″6″3 1/16″16 15/16″27 7/8″42″18 3/16″26 3/16″6″250V-30180185
SH20N50AT17 15/16″25 15/16″27 3/8″6″3 1/16″16 15/16″27 7/8″42″18 3/16″26 3/16″6:00250V-15171175

Due to continuing engineering research and technology, specifications are supbject to change wihtout notice. Manufactured under U.S. Design Patent DES 368, 306 decorative front; Utility Patent 5, 662, 058. MAXIMUM outdoor ambient operating temperature is 130ºF. (55ºC) MAXIMUM TEMPERATURE RATING FOR CLASS 1, DIVISION 2, GROUPS A, B, C, D. Capacity and efficiency values at each climate conditions are available upon request. NOTE: Hazardgard unit must be hard-wired.