nvent SPECTRACOOL G52 Instruction Manual
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nvent SPECTRACOOL G52 Instruction Manual

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SPECTRACOOL
Air Conditioner
G52 1-PhAse Model
INSTRUCTION MANUAL
Rev. A
© 2022 nVent
89209668
P/N 89209668

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Summary of Contents for nvent SPECTRACOOL G52

  • Page 1 SPECTRACOOL Air Conditioner G52 1-PhAse Model INSTRUCTION MANUAL Rev. A © 2022 nVent 89209668 P/N 89209668...

  • 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

    This transformer powers the thermal display only. 115V TO 24V OR 230V TO 24V TRANSFORMER AND RELAY (OPTIONAL) This transformer and relay are used to start/stop the unit thru a customer supplied, remote mounted door switch. © 2022 nVent 89209668 - 4 -...

  • Page 5: Schematics And Wiring Diagrams For Thermostat Control

    SCHEMATICS AND WIRING DIAGRAMS FOR THERMOSTAT CONTROL G521216GXXX GENERIC SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY) 88016277 G520816GXXX GENERIC SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY) 88016182 © 2022 nVent 89209668 - 5 -...

  • Page 6: G521216Gxxx Generic Wire Diagram (Actual Unit Options May Vary)

    G521216GXXX GENERIC WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY) 89081449 © 2022 nVent 89209668 - 6 -...

  • Page 7: G52 8K And 12K 230V Generic Schematic (Actual Unit Options May Vary)

    DOOR SWITCH TRANS AND RELAY (OPTIONAL) TSTAT HEATING, LIMIT SWITCHES & HEATER TSTAT COOLING TIME DELAY RELAY AMBIENT IMPELLER W/HEAD PRESS. CTRL (OPTIONAL) AMBIENT IMPELLER RUN CAPACITOR COMPRESSOR & OVERLOAD ELECTRICAL SCHEMATIC 89168401 REV.A © 2022 nVent 89209668 - 7 -...

  • Page 8: G520816Gxxx Generic Wire Diagram (Actual Unit Options May Vary)

    G520816GXXX GENERIC WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY) 89081442 © 2022 nVent 89209668 - 8 -...

  • Page 9: G52 8K And 12K 230V Generic Wire Diagram (Actual Unit Options May Vary)

    G52 8K AND 12K 230V GENERIC WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY) © 2022 nVent 89209668 - 9 -...

  • Page 10: Dimensional Drawing

    AIR OUT 7.50 9.88 [190.5] 250.8 1/4-20 UNC (12X) CLEANABLE REUSABLE OPTIONAL CTRLR MOUNTING HOLES ALUMINUM INLET FILTER (INDOOR APPLICATION) REMOVAL ON SIDE 1.95 12.50 49.4 317.5 ACCESS HOLE TO Ø .375 DRAIN STUB © 2022 nVent 89209668 - 10 -...

  • Page 11: Installation Instructions

    9.88 [250.8](2) 6.00 [152.4] 17.25 [438.2] 6.00 [152.4] 9.88 [250.8](2) 1.93 [49.0] 0.312 [ 7.92](12) 0.35 [8.9] 18.33 [465.6] 88017668 15.00 [381.0] 88015593 16.00 [406.4](6) SURFACE MOUNT PARTIAL RECESS MOUNT Figure 1 Cutout Dimensions © 2022 nVent 89209668 - 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 © 2022 nVent 89209668 - 13 -...
  • Page 14 © 2022 nVent 89209668 - 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 © 2022 nVent 89209668 - 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 © 2022 nVent 89209668 - 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. © 2022 nVent 89209668 - 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 © 2022 nVent 89209668 - 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 © 2022 nVent 89209668 - 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. © 2022 nVent 89209668 - 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. © 2022 nVent 89209668 - 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 © 2022 nVent 89209668 - 24 -...

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

    SCHEMATIC AND WIRING DIAGRAM FOR REMOTE ACCESS CONTROL G52 8K AND 12K 115V GENERIC SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY) 89203840 REV B G52 8K AND 12K 230V GENERIC SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY) 89205418 REV B © 2022 nVent 89209668 - 25 -...

  • Page 26: G52 8K And 12K 115V Generic Wire Diagram For Remote Access Control (Actual Unit Options May Vary)

    G52 8K AND 12K 115V GENERIC WIRE DIAGRAM FOR REMOTE ACCESS CONTROL (ACTUAL UNIT OPTIONS MAY VARY) 89203839 REV.B © 2022 nVent 89209668 - 26 -...

  • Page 27: G52 8K And 12K 230V Generic Wire Diagram For Remote Access Control (Actual Unit Options May Vary)

    G52 8K AND 12K 230V GENERIC WIRE DIAGRAM FOR REMOTE ACCESS CONTROL (ACTUAL UNIT OPTIONS MAY VARY) 89205274 REV.B © 2022 nVent 89209668 - 27 -...

  • Page 28: Installation Instructions With Remote Access Control

    Electrical circuit should be fused with slow blow or HACR circuit breaker. 6. Set controller setpoints for required cabinet temperature. Refer to DISPLAYING AND CHANGING PROGRAM Settings on page 15 for setpoint adjustment and operation. 88015593 Surface Mount Figure 5 Cut-out Drawing © 2022 nVent 89209668 - 28 -...

  • Page 29: 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. © 2022 nVent 89209668...

  • Page 30: 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 31: Refrigerant Properties Chart (R 134A)

    Unit Amps(A) In(°F) Delta(°F) Delta(°F) 5.4-7.4 6-14 11-25 G520816GXXX 6.0-8.7 8-16 13-33 4.1-5.3 8-17 12-27 G520826GXXX 4.3-5.8 9-21 14-32 8.8-11.3 8-18 15-29 G521216GXXX 9.3-13.0 10-22 15-39 5.9-7.8 10-24 14-30 G521226GXXX 6.4-8.7 13-29 16-35 © 2022 nVent 89209668 - 31 -...

  • Page 32: 8000 Btu/Hr. Unit Characteristics

    +/- 10% of rated Cooling Amps at Max Conditions 9.9 / 11.4 5.2 / 6.9-6.6 Heating Amps 17.3 Compressor RLA / LRA 5.4 / 38.0 3.7 / 19.0 Evaporator Fan RLA* Condenser Fan RLA* © 2022 nVent 89209668 - 32 -...

  • Page 33: 12000 Btu/Hr. Unit Characteristics

    Voltage Range +/- 10% of rated Cooling Amps at Max Conditions 15.5 / 19.7 8.0/10.9-10.2 Heating Amps 17.3 Compressor RLA / LRA 10.0 / 60.0 6.2 / 30.0 Evaporator Fan RLA* Condenser Fan RLA* © 2022 nVent 89209668 - 33 -...

  • Page 34: Service Data

    Limit Switch (automatic) 10-1033-01 10-1033-01 10-1033-01 10-1033-01 Limit Switch (manual) 10-1033-07 10-1033-07 10-1033-07 10-1033-07 Controller, Basic 89202719 Thermistor 89075654 Bridge Rectifier 89087424 Communication Board 89145457 315 mA Fuse 89085114 Time Delay Relay 89172089 89172089 © 2022 nVent 89209668 - 34 -...

  • Page 35: F-Gas Information

    680 Gramów 1077 Gramów 1021 Gramow Equivalent 0.81 Tons 0.97 Tons 1.54 Tons 1.46 Tons Equivalent 0,81 Tonnen 0,97 Tonnen 1,54 Tonnen 1,46 Tonnen Ekwilalent 0,81 Tony 0,97 Tony 1,54 Tony 1,46 Tony © 2022 nVent 89209668 - 35 -...

  • Page 36: Trouble Shooting

    (replace upper access panel for safety). This will activate the switch in the thermostat. Turn the power on and if all impellers and the compressor come on, the thermostat needs to be replaced. © 2022 nVent 89209668 - 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. © 2022 nVent 89209668 - 37 -...

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

    6. The compressor and the condenser (Ambient or “HOT” air) impeller(s) should turn on. Is there adequate airflow? YES, proceed to step 7. NO, possible problem: » Open motor winding(s) » Stuck impeller(s) Repair or Replace » Obstructed wheel(s) defective part » Defective motor capacitor(s) © 2022 nVent 89209668 - 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. © 2022 nVent 89209668 - 39 -...
  • Page 40 Rev. A © 2022 nVent 89209668 P/N 89209668...

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