G57 20K 460V 1P 316SS COR LVL1
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Manufacturer Hoffman Engineering
Mfg Catalog # G572046G102
North Coast Part # 1015695


  • Two levels of corrosion protecton: - Level 1 - Protective coatings on all exposed copper tubing and solder joints, condenser coil and thermostat. - Level 2 - All protective coatings in Level 1 plus a coated evaporator coil. Foam wrap added over protective coatings on thermostat.
  • Energy-efficient rotary compressor on most models
  • R407c and R134a earth-friendly refrigerants
  • 115, 230 and 400/460 VAC 3-phase power input on most models
  • UL Listed to save customers time and money with agency approvals
  • Operating temperature range from -40 F/-40 C to 131 F/55 C
  • Exterior and partially recessed mounting options
  • Attractive industrial design with minimal use of visible fasteners
  • Dual condenser-side air movers for performance redundancy on G52 and G57 models
  • Galvanized sheet-metal cover for rugged factory and outdoor environments
  • Easy-mount flanges for simple installation
  • Cut-out adapter options for enclosures with Genesis and T-Series air conditioners, enable users to easily transition to the new unit
  • Dust-resistant condenser coil allows the unit to be run filterless in most applications
  • Cleanable, reusable aluminum mesh filter protects coils for maximum cooling performance
  • Mounting hardware, gaskets and user manual furnished with the unit
  • Every unit functionally tested before shipping
  • Standard Indoor Air Conditioner models also include:
  • Acrtive condensate management with heater strip
  • Power-off relay for door switch and other system requirements
  • Malfunction switch
  • Standard Outdoor Air Conditioner models also include:
  • Telcordia GR-487 capable
  • Corrosion-resistant components
  • Malfunction switch
  • Compressor heater
  • Head pressure control
  • Nominal cooling capacity:
  • G28 4000 & 6000 BTU/Hr. (1172 and 1758 W)
  • G52 8000 & 12000 BTU/Hr. (2344 and 3516 W)
  • G57 20000 BTU/Hr. (5861 W)
  • Operating temperature range from -40 F/-40 C to 131 F/55 C


  • Reference the Spec Sheet in the Downloads tab for complete product specifications.
  • Units with Remote Access Control utilize a digital controller and communicate via EtherNet/IP, Modbus TCP/IP and SNMP over ethernet or modbus RTU over USB. Visit www.pentairprotect.com/en/hoffman/SpectraCool-Remote-Access-Control-472042 for more information regarding SpectraCool Remote Access Control (RAC).


  • Model Code: 21078
  • Bulletin Number: MCLG
  • Catalog Number: G572046G102
  • Description: Level 1 Stainless Steel 316 - G102
  • Width (in.): 20.87
  • Depth (in.): 15.28
  • Fahrenheit Min.: -40
  • Fahrenheit Max.: 131
  • Max Current (A): 6.8
  • Weight (lb.): 197.00
  • Voltage: 400 - 460 VAC
  • Nominal BTU/Hr.: 20000
  • Nominal Watts: 5861
  • Height (in.): 57.69
  • Standards: UL/cUL Listed; Type 12, 3R, 4; 4X optional; File No. SA6453 || CE || EAC || IP 56 Internal Loop || IP 34 on External Loop || Telcordia GR-487 capable (Outdoor)



UPC 78351021078
GTiN 00783510210786
Width 20.87 in
Voltage 460 Volt
Depth 15.28 in
Height 57.69 in
Weight 197.00 lb
Standard 3R,4,4X,CE,IP 34 On External Loop,IP 56 Internal Loop,Telcordia GR-487 Capable (Outdoor),UL/cUL Listed Type 12
Frequency 50/60 Hz
Wattage 5861 Watt
Family Brand Name Hoffman
Number of Phases 3 Phase
BTU Hour 20000 BTU
Max Current 6.8 A
Max Temperature 131 degrees F
Min Temperature -40 degrees F

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