nvent SPECTRACOOL G52 460V Instruction Manual
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nvent SPECTRACOOL G52 460V Instruction Manual

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SPECTRACOOL
Air Conditioner
G52 460V Model
INSTRUCTION MANUAL
Rev. B
© 2023 nVent
89209669
P/N 89209669

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Summary of Contents for nvent SPECTRACOOL G52 460V

  • Page 1 SPECTRACOOL Air Conditioner G52 460V Model INSTRUCTION MANUAL Rev. B © 2023 nVent 89209669 P/N 89209669...

  • Page 2: Table Of Contents

    Symptoms and Possible Causes - Remote Access Control Version ........................... 39 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: Warranty And Return Policy

    Damage evident upon receipt should be noted on the freight bill. Damage should be brought to the attention of the delivering carrier -- NOT to nVent Equipment Protection -- within 15 days of delivery. Save the carton and packing material and request an inspection. Then file a claim with the delivering carrier.

  • Page 4: Technical Information

    118 F (165 psig), the condenser fans will power on. CONTACTOR The contactor on this model uses a 230V coil. OVERLOAD Set overload reset setting to automatic “A” and trip point dial to 3.0A. © 2023 nVent 89209669 - 4 -...

  • Page 5: Phase Monitor

    The unit will remain electrified when the door switch is operated with the evaporator fan continuing to operate, and potentially, if temperatures are low enough, the heater may continue to operate on outdoor models. © 2023 nVent 89209669 - 5 -...

  • Page 6: Schematics And Wiring Diagrams For Thermostat Control

    SCHEMATICS AND WIRING DIAGRAMS FOR THERMOSTAT CONTROL G52 GENERIC SCHEMATIC WITH THERMOSTATS (ACTUAL UNIT OPTIONS MAY VARY) © 2023 nVent 89209669 - 6 -...

  • Page 7: G52 Generic Wire Diagram With Thermostats (Actual Unit Options May Vary)

    G52 GENERIC WIRE DIAGRAM WITH THERMOSTATS (ACTUAL UNIT OPTIONS MAY VARY) © 2023 nVent 89209669 - 7 -...

  • Page 8: Installation Instructions With Thermostats

    Electrical circuit should be fused with slow blow or HACR circuit breaker. 7. Set controller setpoints for required cabinet temperature. Refer to DISPLAYING AND CHANGING PROGRAM Settings on page 15 for setpoint adjustment and operation © 2023 nVent 89209669 - 8 -...
  • Page 9 89061033 88015593 Surface Mount Surface Mount With Heat 88017668 Partial Recess Mount Figure 1 Cutout Dimensions © 2023 nVent 89209669 - 9 -...

  • Page 10: Dimensional Drawings

    DIMENSIONAL DRAWINGS 8000 BTU/HR. WITH THERMOSTATS 88045775 12000 BTU/HR. WITH THERMOSTATS 88016286 © 2023 nVent 89209669 - 10 -...

  • Page 11: 8000 Btu/Hr. With Thermostats And Heat

    BEHIND REMOVABLE PANEL. 1/4-20 UNC (12) MOUNTING HOLES NOTE: APPROVE TO TYPE 3R/4/12. MOUNTING GASKET SUPPLIED (NOT SHOWN). ACCESS HOLE TO .375 [9.5] O.D. DRAIN STUB 12000 BTU/HR. WITH THERMOSTATS AND HEAT 89059259 © 2023 nVent 89209669 - 11 -...

  • Page 12: Digital Thermostat Controller (Optional)

    Note: nVent Hoffman network card (RAC module) is an optional accessory, therefore, some of the air conditioners ship without the network card but it is upgradable upon request.
  • Page 13 Compressor Running • Steady ON while compressor is running White Evaporator Running White Electric heater ON White Primary and/or lead controller Compressor and Condenser fan OFF White Freeze control while illuminated White Power ON © 2023 nVent 89209669 - 13 -...
  • Page 14 © 2023 nVent 89209669 - 14 -...

  • Page 15: Displaying And Changing Program Settings

    Default value High temperature alarm setpoint 125 F Low temperature alarm setpoint 40 F Door open alarm setting ArOP Alarm relay output NOTES: (4) The alarm relay output logic is designed to be configurable © 2023 nVent 89209669 - 15 -...
  • Page 16 No effect on function setpoint Compressor and condenser fan turns OFF for the duration Frost alarm Evaporator coil freezes of alarm. Alarm clears when Closed the outlet temperature sensor reaches 59 F © 2023 nVent 89209669 - 16 -...

  • Page 17: Displaying Temperature Data On Screen

    This input is associated with the controller display alarm mnemonic dO (door open). To use this feature, remove the splice connector, and connect the two white wires to customer supplied enclosure door switch in its place. Note: do NOT apply power to this dry contact input. © 2023 nVent 89209669 - 17 -...

  • Page 18: Primary-Secondary (Ps) Mode

    7. Best recommendation is to configure the ACU that has Hoffman network card to be the primary one. CONNECTING UNITS TOGETHER IN PRIMARY/SECONDARY MODE Primary - Device ID 1 Secondary - Device ID 2 Secondary - Device ID 3 Secondary - Device ID 10 Figure 3 Primary-secondary network connectivity © 2023 nVent 89209669 - 18 -...

  • Page 19: Connecting Units Together In Lead/Lag Mode

    10. Set parameter H03 (total number of controllers connected) to 1 to 10. CONNECTING UNITS TOGETHER IN LEAD/LAG MODE Lead - Device ID 1 Lag - Device ID 2 Figure 4 Lead-Lag network connectivity © 2023 nVent 89209669 - 19 -...

  • Page 20: Air Conditioner Unit Remote Communication Features

    Air conditioners that include the optional Hoffman network card (RAC module) have remote communication capabilities utilizing SNMP, Modbus TCP, EtherNet/IP, Profinet Protocol via Ethernet connection, and Modbus RTU protocol via USB connection. nVent provides Windows interface application software that is available to download free from nVent support link https://go.nvent.com/remote-access-control-support-center. The Windows interface application software supports both Ethernet and USB communication.

  • Page 21: Using Hoffman Pc Interface Tool

    Enter the new network configuration to Device IP address, Gateway IP, and Trap IP, then click on Reprogram ACU • button to write to the network card. In order to be recognized the new networking configurations in local network, cycle power to the A/C unit is required. • © 2023 nVent 89209669 - 21 -...

  • Page 22: Usb Communication Mode

    Enter the new network configuration to Device IP address, Gateway IP, and Trap IP, then click on Reprogram ACU • button to write to the network card. In order to be recognized the new networking configurations in local network, cycle power to the A/C unit is required. • © 2023 nVent 89209669 - 22 -...

  • Page 23: Ethernet Communication Mode

    Refer to remote access control (RAC) Instruction Manual for configuring multiple units and with text message and email capability in Hoffman A.C. Monitor software. The remote access control Instruction Manual, P/N: 89091002 can be downloaded from nVent support center link, https://go.nvent.com/remote-access-control-support-center.

  • Page 24: Remote Access Control Pin-Out

    INLET TEMP PROBE DOOR OPEN SWITCH WHT63 GROUND RESERVED OUTLET TEMP PROBE RED45 MAL-FUNCTION ALARM BLU88 RESERVED UNIT REMOTE ON/OFF RESERVED RESERVED GROUND RESERVED DATA (-) DATA (+) GROUND DATA (-) DATA (+) GROUND © 2023 nVent 89209669 - 24 -...

  • Page 25: Schematic And Wiring Diagram For Remote Access Control

    SCHEMATIC AND WIRING DIAGRAM FOR REMOTE ACCESS CONTROL G52 GENERIC SCHEMATIC WITH REMOTE ACCESS CONTROL (ACTUAL UNIT OPTIONS MAY VARY) 89204151 REV B © 2023 nVent 89209669 - 25 -...

  • Page 26: G52 Generic Wire Diagram With Remote Access Control (Actual Unit Options May Vary)

    G52 GENERIC WIRE DIAGRAM WITH REMOTE ACCESS CONTROL (ACTUAL UNIT OPTIONS MAY VARY) 89204076 REV.B © 2023 nVent 89209669 - 26 -...

  • Page 27: Dimensional Drawings

    AIR OUT ENCLOSURE AIR IN ELECTRONIC CONTROLLER (INDOOR ELECTRONIC APPLICATION) CONTROLLER TABS LOCATION (OUTDOOR APPLICATION) ETHERNET AIR IN AND USB CONNECTIONS COOL AIR OUT OPTIONAL ACCESS PANEL 89083019 Rev. D ACCESS HOLE TO © 2023 nVent 89209669 - 27 -...

  • Page 28: Maintenance

    1. Flush the filter with warm water from the exhaust side to the intake side. DO NOT USE CAUSTICS. 2. After flushing, allow filter to drain. Placing it with a corner down will assure complete drainage. © 2023 nVent 89209669...

  • Page 29: Condenser And Evaporator Air Movers

    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 Equipment Protection for special recommendations. REFRIGERANT LOSS Each air conditioner is thoroughly tested prior to leaving the factory to insure against refrigeration leaks. Shipping damage or microscopic leaks not found with sensitive electronic refrigerant leak detection equipment during manufacture may require repair or recharging of the system.

  • Page 30: Refrigerant Properties Chart (R 134A)

    2.0-2.8 8-22 15-26 70-75 2.0-2.8 8-22 17-30 G520846GXXX 75-80 2.1-2.9 8-22 18-31 80-85 2.1-2.9 8-22 19-32 65-70 2.3-3.0 9-22 22-36 70-75 2.3-3.0 9-23 23-37 G521246GXXX 75-80 2.4-3.1 9-24 24-38 80-85 2.4-3.1 10-25 24-38 © 2023 nVent 89209669 - 30 -...

  • Page 31: 8000 Btu/Hr. Unit Characteristics

    Rated Voltage (50/60 Hz) 400/460V 3 phase Rated Frequency 50/60 Hz Voltage Range +/- 10% of rated Cooling Amps at Max Conditions 2.4/2.8 Heating Amps Compressor RLA / LRA 1.3/13.0 Evaporator Fan RLA* Condenser Fan RLA* © 2023 nVent 89209669 - 31 -...

  • Page 32: 12000 Btu/Hr. Unit Characteristics

    Rated Voltage (50/60 Hz) 400/460V 3 phase Rated Frequency 50/60 Hz Voltage Range +/- 10% of rated Cooling Amps at Max Conditions 3.2/3.5 Heating Amps Compressor RLA / LRA 2.2/20.0 Evaporator Fan RLA* Condenser Fan RLA* © 2023 nVent 89209669 - 32 -...

  • Page 33: Service Data

    Limit Switch (manual) 10-1033-07 10-1033-07 Overload, Compressor 89098326 89098326 Relay, Phase Monitor 89117576 89117576 Thermal Expansion Valve 10-1040-42 10-1040-31 Thermal Overload, Compressor 89171728 89171728 Thermostat, SPDT, 55-100F 10-1061-16 10-1061-16 Transformer 460/230V 400VA 10-1006-128 10-1006-128 © 2023 nVent 89209669 - 33 -...

  • Page 34: Components List With Remote Access Control

    Limit Switch (automatic) 10-1033-01 10-1033-01 Limit Switch (manual) 10-1033-07 10-1033-07 Relay, Phase Monitor 89117576 89117576 Thermal Expansion Valve 10-1040-42 10-1040-31 Thermal Overload, Compressor 89171728 89171728 Transformer 460/230V 400VA 10-1006-128 10-1006-128 Circuit Breaker Control 10-1060-69 10-1060-69 © 2023 nVent 89209669 - 34 -...
  • Page 35 NOTES © 2023 nVent 89209669 - 35 -...

  • Page 36: Trouble Shooting

    Is the compressor showing signs of this? YES, wait 5 minutes, then proceed to step 8. NO, possible problem: » Defective thermostat Repair or Replace » Defective overload defective part » Defective relay © 2023 nVent 89209669 - 36 -...

  • Page 37: Symptoms And Possible Causes - Thermostat Version

    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. © 2023 nVent 89209669 - 37 -...

  • Page 38: Basic Air Conditioning Trouble Shooting Check List - Remote Access Control Version

    Restart Time Delay mode. Within 6 minutes, symbol 1 should display without flashing. Is symbol 1 displayed without flashing? YES, proceed to step 7. NO, possible problem: » Unit still in Recycle Time Delay mode » Enclosure temperature below cooling Wait and/or heat enclosure thermistor T1 setpoint temperature © 2023 nVent 89209669 - 38 -...

  • Page 39: Symptoms And Possible Causes - Remote Access Control Version

    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. © 2023 nVent 89209669 - 39 -...
  • Page 40 Rev. B © 2023 nVent 89209669 P/N 89209669...

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