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SPECTRACOOL™
DC Air ConDitioner
G280548G100 MoDel
INSTRUCTION MANUAL
Rev. D
© 2018 nVent
89102931
P/N 89102931

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Summary of Contents for nvent SPECTRACOOL G280548G100

  • Page 1 SPECTRACOOL™ DC Air ConDitioner G280548G100 MoDel INSTRUCTION MANUAL Rev. D © 2018 nVent 89102931 P/N 89102931...
  • Page 2: Table Of Contents

    Condenser and Evaporator Air Movers ...............................10 Refrigerant Loss ......................................11 Service Data ........................................11 G28 Series Components List ..................................11 TROUBLE SHOOTING ................................... 12 Basic Air Conditioning Trouble Shooting Check List ..........................12 Symptoms and Possible Causes:................................13 WARRANTY AND RETURN POLICY https://hoffman.nvent.com/en/hoffman/warranty-information © 2018 nVent 89102931 - 2 -...
  • Page 3: Receiving The Air Conditioner

    Save the packing material and request an inspection. Then file a claim with the delivering carrier within 15 days of delivery. nVent Equipment Protection cannot accept responsibility for freight damages; however, we will assist you in any way possible.
  • Page 4: Installation Instructions

    Electrical circuit should be fused with slow blow or HACR circuit breaker. 6. Set thermostat for required cabinet temperature. Refer to Sequence of Operation on page 6 for thermostat adjustment & operation. DIMENSIONAL DRAWING 89092620 © 2018 nVent 89102931 - 4 -...
  • Page 5 28-1000-13 SURFACE MOUNT Figure 1 Cutout Dimensions © 2018 nVent 89102931 - 5 -...
  • Page 6: Technical Information

    Contact Material Ag (Au clad) Maximum Carry Current Maximum Operating Voltage 125 VAC, 60 VDC Maximum Operating Current Maximum Switching Capacity 37.5 VA, 30 W Minimum Permissible Load 10 μA at 10 mVDC © 2018 nVent 89102931 - 6 -...
  • Page 7: Refrigerant Properties Chart (R134A)

    86.7 -26.1 29.4 -23.3 32.2 -20.6 113.3 -17.8 37.8 40.6 -12.2 43.3 146.7 -9.4 46.1 157.5 -6.7 18.5 48.9 -3.9 51.7 -1.1 54.4 197.5 57.2 213.3 62.8 246.7 45.5 65.6 263.8 12.8 51.5 © 2018 nVent 89102931 - 7 -...
  • Page 8: Performance Data

    Heating Amps Compressor RLA Evaporator Fan RLA Condenser Fan RLA FUNCTIONAL DATA Evaporator Air Condenser Delta Evaporator Model Amps (A) In (°F) (°F) Delta (°F) 65-80 10-14 37-41 17-28 G280548GXXX 81-100 12-18 34-46 23-32 © 2018 nVent 89102931 - 8 -...
  • Page 9: Wire Diagrams

    WIRE DIAGRAMS G280548GXXX GENERIC WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY) © 2018 nVent 89102931 - 9 -...
  • Page 10: Maintenance

    The condenser blower is mounted on its own bulkhead and is easily accessible by removing the front cover. Caution! Operation of the air conditioner in areas containing airborne caustics or chemicals can rapidly deteriorate filters, condenser coils, blowers and motors, etc. Contact nVent for special recommendations. © 2018 nVent 89102931...
  • Page 11: Refrigerant Loss

    Compressor 89090985 Compressor Controller 89085708 Control Board 89102442 Filter, Air, Reusable 10-1000-107 Filter/Dryer 52-6028-00 Heater, Compressor or Condenser Pan (optional) 10-1030-08 Thermistor, Evaporator / Condenser Coils 10-1106-118 Impeller, Condenser 89102441 Impeller, Evaporator 89102440 © 2018 nVent 89102931 - 11 -...
  • Page 12: Trouble Shooting

    7. Make sure the coils are clean. Then check evaporator “air in” and “air out” temperatures. If the temperatures are the same: • Possible loss of refrigerant Repair or Replace • Possible bad valves in the defective part compressor © 2018 nVent 89102931 - 12 -...
  • Page 13: Symptoms And Possible Causes

    Unit blows breakers Short in system Drain plugged Drain tube kinked Getting water in enclosure Enclosure not sealed (allowing humidity in) Mounting gasket damaged For additional technical support, contact nVent Equipment Protection at 800-896-2665. © 2018 nVent 89102931 - 13 -...
  • Page 14 NOTES © 2018 nVent 89102931 - 14 -...
  • Page 15 NOTES © 2018 nVent 89102931 - 15 -...
  • Page 16 Rev. D © 2018 nVent 89102931 P/N 89102931...

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