nvent SPECTRACOOL N43 Instruction Manual
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nvent SPECTRACOOL N43 Instruction Manual

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SPECTRACOOL
Air Conditioner
n43 Model
INSTRUCTION MANUAL
Rev. A
© 2022 nVent
89215760
P/N 89215760

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Summary of Contents for nvent SPECTRACOOL N43

  • Page 1 SPECTRACOOL Air Conditioner n43 Model INSTRUCTION MANUAL Rev. A © 2022 nVent 89215760 P/N 89215760...

  • Page 2: Table Of Contents

    Basic Air Conditioning Trouble Shooting Check List - Thermostat Version ......................38 Symptoms and Possible Causes - Thermostat Version ............................39 Basic Air Conditioning Trouble Shooting Check List - Remote Access Control Version ..................40 Symptoms and Possible Causes - Remote Access Control Version ........................41 © 2022 nVent 89215760 - 2 -...

  • 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

    The contactor on the 1 phase 115V model uses a 115 V coil. The 3 phase model uses a 230 V coil. The contactor on the 1-phase 230V model uses a 230V coil (controller option only). © 2022 nVent 89215760...

  • Page 5: Phase Monitor (N431246Gxxx Only)

    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. © 2022 nVent 89215760 - 5 -...

  • Page 6: Schematics And Wiring Diagrams For Thermostat Control

    SCHEMATICS AND WIRING DIAGRAMS FOR THERMOSTAT CONTROL N43 115V 1-PHASE GENERIC SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY) 05-2001-193 N43 230V 1-PHASE GENERIC SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY) 89174327 REV A © 2022 nVent 89215760 - 6 -...

  • Page 7: N43 460V 3-Phase Generic Schematic (Actual Unit Options May Vary)

    N43 460V 3-PHASE GENERIC SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY) © 2022 nVent 89215760 - 7 -...

  • Page 8: N43 115V 1-Phase Generic Wire Diagram (Actual Unit Options May Vary)

    SWITCHES RED5 CAP. START RELAY ENCLOSURE WHT25 IMPELLER RED R WHT61 CAP. YEL4 ENC. AMB. AMBIENT IMPELLER YEL S RED R AMBIENT IMPELLER BLK20 BLK12 COMPRESSOR COMP HTR OR C/E 89069906 (OPTIONAL) (OPTIONAL) © 2022 nVent 89215760 - 8 -...

  • Page 9: N43 230V 1-Phase Generic Wire Diagram (Actual Unit Options May Vary)

    N43 230V 1-PHASE GENERIC WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY) © 2022 nVent 89215760 - 9 -...

  • Page 10: N43 400/460V 3-Phase Generic Wire Diagram (Actual Unit Options May Vary)

    N43 400/460V 3-PHASE GENERIC WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY) © 2022 nVent 89215760 - 10 -...

  • Page 11: Dimensional Drawing

    DIMENSIONAL DRAWING WITH THERMOSTATS 89068457 © 2022 nVent 89215760 - 11 -...

  • Page 12: Installation Instructions

    24 VAC terminal strip by noting the locations on the correct wiring diagram. 8. Set thermostat for required cabinet temperature. Reference Sequence of Operation on page 4 for thermostat adjustment and operation. SURFACE MOUNT Figure 1 Cutout Dimensions © 2022 nVent 89215760 - 12 -...

  • Page 13: 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 14 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 89215760 - 14 -...
  • Page 15 © 2022 nVent 89215760 - 15 -...

  • Page 16: 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 89215760 - 16 -...
  • Page 17 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 89215760 - 17 -...

  • Page 18: 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 89215760 - 18 -...

  • Page 19: 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 89215760 - 19 -...

  • Page 20: 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 89215760 - 20 -...

  • Page 21: 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 22: 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 89215760 - 22 -...

  • Page 23: 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 89215760 - 23 -...

  • Page 24: 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 25: 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 89215760 - 25 -...

  • Page 26: Schematic And Wiring Diagram For Remote Access Control

    SCHEMATIC AND WIRING DIAGRAM FOR REMOTE ACCESS CONTROL N43 1-PHASE GENERIC SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY) 89214196 REV A © 2022 nVent 89215760 - 26 -...

  • Page 27: N43 460V 3-Phase Generic Schematic For Remote Access Control (Actual Unit Options May Vary)

    N43 460V 3-PHASE GENERIC SCHEMATIC FOR REMOTE ACCESS CONTROL (ACTUAL UNIT OPTIONS MAY VARY) 89214198 REV A © 2022 nVent 89215760 - 27 -...

  • Page 28: N43 1-Phase Generic Wire Diagram For Remote Access Control (Actual Unit Options May Vary)

    N43 1-PHASE GENERIC WIRE DIAGRAM FOR REMOTE ACCESS CONTROL (ACTUAL UNIT OPTIONS MAY VARY) 89214164 REV.A © 2022 nVent 89215760 - 28 -...

  • Page 29: N43 460V 3-Phase Generic Wire Diagram For Remote Access Control (Actual Unit Options May Vary)

    N43 460V 3-PHASE GENERIC WIRE DIAGRAM FOR REMOTE ACCESS CONTROL (ACTUAL UNIT OPTIONS MAY VARY) 89214167 REV.A © 2022 nVent 89215760 - 29 -...

  • Page 30: Dimensional Drawings

    DIMENSIONAL DRAWINGS N43 GENERIC MODEL DRAWING WITH REMOTE ACCESS CONTROL 89082929 © 2022 nVent 89215760 - 30 -...

  • Page 31: 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 16 for setpoint adjustment and operation. Surface Mount Figure 5 Cut-out Drawing © 2022 nVent 89215760 - 31 -...

  • Page 32: 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 89215760...

  • Page 33: 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 34: Refrigerant Properties Chart (R 134A)

    Evaporator Unit Amps(A) In(°F) Delta(°F) Delta(°F) 65-80 8.4-11.7 17-36 19-40 N431216GXXX 80-100 9.5-14.4 19-43 22-45 65-80 6.0-7.8 11-23 17-41 N431226GXXX 80-100 6.4-8.7 12-27 22-44 65-80 2.6-3.3 13-30 20-40 N431246GXXX 80-100 2.7-3.5 16-35 22-48 © 2022 nVent 89215760 - 34 -...

  • Page 35: Unit Characteristics

    +/- 10% of rated Cooling Amps at Max Conditions 16.2/20.8 7.9/10.2 3.4/3.6 Heating Amps 12.2 Compressor RLA / LRA 10/60 4.9/38.0 2.1/16.0 Evaporator Fan RLA .78/.93 .39/.53 .39/.53 Condenser Fan RLA .78/.93 .39/.53 .39/.53 © 2022 nVent 89215760 - 35 -...

  • Page 36: Service Data

    Füllmenge durch Hersteller 1021 Gramm 1106 Gramów 1219 Gramów Opłata Fabryczna 1021 Gramów 1.58 Tons 1.74 Tons Equivalent 1.46 Tons 1,58 Tonnen 1,74 Tonnen Equivalent 1,46 Tonnen 1,58 Tony 1,74 Tony Ekwilalent 1,46 Tony © 2022 nVent 89215760 - 36 -...
  • Page 37 NOTES © 2022 nVent 89215760 - 37 -...

  • Page 38: 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 89215760 - 38 -...

  • Page 39: 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 89215760 - 39 -...

  • Page 40: 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 89215760 - 40 -...

  • Page 41: 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 89215760 - 41 -...
  • Page 42 NOTES © 2022 nVent 89215760 - 42 -...
  • Page 43 NOTES © 2022 nVent 89215760 - 43 -...
  • Page 44 Rev. A © 2022 nVent 89215760 P/N 89215760...

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