nvent SPECTRACOOL G28 Instruction Manual
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nvent SPECTRACOOL G28 Instruction Manual

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SPECTRACOOL™
Air Conditioner
G28 dC Model
INSTRUCTION MANUAL
Rev. I
© 2019 nVent
89092263
P/N 89092263

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Summary of Contents for nvent SPECTRACOOL G28

  • Page 1 SPECTRACOOL™ Air Conditioner G28 dC Model INSTRUCTION MANUAL Rev. I © 2019 nVent 89092263 P/N 89092263...

  • Page 2: Table Of Contents

    F-GAS INFORMATION ..................................15 NOTE: Some of the information in this manual may not apply if a special unit was ordered. If additional drawings for a special unit are necessary, they have been inserted. Contact nVent Equipment Protection if further information is required.

  • Page 3: Handling & Testing 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. 7. Set thermostat for required cabinet temperature. Refer to Sequence of Operation on page 6 for thermostat adjustment & operation. DIMENSIONAL DRAWING 89091095 © 2019 nVent 89092263 - 4 -...
  • Page 5 28-1000-13 SURFACE MOUNT Figure 1 Cutout Dimensions © 2019 nVent 89092263 - 5 -...

  • Page 6: Technical Information

    This unit can be ordered with an optional door switch input. Models equipped with the door switch input will require a customer supplied switch. The switch must be normally closed and must be rated for 48 VDC and 300mA minimum. © 2019 nVent 89092263 - 6 -...

  • Page 7: Alarm Output

    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 © 2019 nVent 89092263 - 7 -...

  • Page 8: Performance Data

    FUNCTIONAL DATA Evaporator Air Condenser Delta Evaporator Model Amps (A) In (°F) (°F) Delta (°F) 65-80 13-18 27-33 14-32 G280648GXXX 81-100 15-23 34-50 26-37 65-80 24-36 27-33 14-32 G280624GXXX 81-100 30-43 34-50 26-37 © 2019 nVent 89092263 - 8 -...

  • Page 9: Wire Diagrams

    WIRE DIAGRAMS G280648GXXX GENERIC WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY) © 2019 nVent 89092263 - 9 -...

  • Page 10: G280624Gxxx Generic Wire Diagram (Actual Unit Options May Vary)

    BLK1 BLOCK BLK31 COOL BLK17 BLK19 BLK16 BLK13 RED30 RED18 RED12 TEMP SENSOR (EVAP COIL) TEMP SENSOR (COND COIL) CONDENSER COMPRESSOR IMPELLER HEATER (OPT.) OVER- LOAD WHT7 COMPRESSOR 89100025 WHT6 YEL5 BLU3 ORG4 © 2019 nVent 89092263 - 10 -...

  • Page 11: 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. © 2019 nVent 89092263...

  • Page 12: Refrigerant Loss

    89085708 89099535 Control Board 89085851 89085851 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 10-1091-148 10-1091-149 Impeller, Evaporator 10-1091-144 10-1091-145 © 2019 nVent 89092263 - 12 -...
  • Page 13 NOTES © 2019 nVent 89092263 - 13 -...

  • Page 14: 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 © 2019 nVent 89092263 - 14 -...

  • Page 15: 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. F-GAS INFORMATION G280624GXXX Refrigerant Kühlmittel R134a Chłodziwo...
  • Page 16 NOTES © 2019 nVent 89092263 - 16 -...
  • Page 17 NOTES © 2019 nVent 89092263 - 17 -...
  • Page 18 NOTES © 2019 nVent 89092263 - 18 -...
  • Page 19 NOTES © 2019 nVent 89092263 - 19 -...
  • Page 20 Rev. I © 2019 nVent 89092263 P/N 89092263...

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