nVent Hoffman X2302 Instruction Manual
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nVent Hoffman X2302 Instruction Manual

Extreme ac air conditioner
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Extreme AC Air Conditioner
X2302 Model
Instruction Manual
P/N 89215748  Rev E

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Summary of Contents for nVent Hoffman X2302

  • Page 1 Extreme AC Air Conditioner X2302 Model Instruction Manual P/N 89215748  Rev E...

  • Page 3: Table Of Contents

    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 HOFFMAN if further information is required. WARRANTY AND RETURN POLICY https://HOFFMAN.nVent.com/en/HOFFMAN/warranty-information...

  • Page 4: Receiving The Air Conditioner

    RECEIVING THE AIR CONDITIONER Inspect the air conditioner. Check for concealed damage that may have occurred during shipment. Look for dents, scratches, loose assemblies, evidence of oil, etc. 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.

  • Page 5: Installation Instructions

    INSTALLATION INSTRUCTIONS 1. Inspect air conditioner and verify functionality before mounting the air conditioner, “HANDLING AND TESTING THE AIR CONDITIONER” see on page 4. 2. Using the cutout dimensions shown in this manual, prepare the air conditioner opening, and mounting bolt hole pattern for the enclosure. See “Mounting Cutout Dimensions”...

  • Page 6: Mounting Cutout Dimensions

    Mounting cutout dimensions 3X 9.15 3X 4.58 3X .43 3X .48 3X 5.00 10.63 8.40 16.25 22.22 20.32 21.25 89215771 Cutout Dimensions Mounting Gasket Adheres to Enclosure nVent.com/HOFFMAN...

  • Page 7: Wire Diagram

    Wire diagram 89206067 REV.C nVent.com/HOFFMAN...

  • Page 8: Schematics

    Schematics 89206866 REV.B nVent.com/HOFFMAN...

  • Page 9: Component List

    COMPONENT LIST ** MOUNTING GASKET NOT SHOWN Reference Part description 115 V 230 V Fan, Condenser 89206390SP 89206391SP Filter, Air 89203781SP 89203781SP Compressor 89109026SP 89108369SP Overload, Compressor Thermal 89109877SP 89109878SP Switch, HPC 89083016SP 89083016SP Switch, MALF 89096948SP 89096948SP Filter Drier 52602803SP 52602803SP Coil, Condenser...

  • Page 10: Technical Information

    WASHDOWN NOTE Testing has confirmed that with the cover in place the X2302 Air Conditioner will successfully withstand a clean water washdown procedure while the unit is energized. If the washdown procedure is performed with the cover removed the unit must first be de-energized, and must be allowed to dry completely before the cover is reinstalled and power is reapplied.
  • Page 11 Keypad Symbol Color Icon Indication Icon Status Alarm – active when alarm is detected Flashing when alarm is detected Keypad Select – access to passcode , hold 5 sec to turn unit White ON/OFF, parameter menu, parameter setting, write or save to EEPROM, and hold for 3 sec to return to main screen Keypad Up –...
  • Page 12 nVent.com/HOFFMAN...

  • Page 13: Displaying And Changing Program Settings

    Displaying and changing program settings To view or access the settings To access folder menus: 1. Press button to display passcode screen, the screen displays PSd on line 1 and 0000 on line 2. 2. Press button to access to passcode , the first digit of 0000 is flashing and press 3 more times until the last digit of 0000 flashes. 3.
  • Page 14 There are seven possible alarms (non-latching) detectable by the controller and are indicated on the controller display. All alarms are accessible locally. If a nVent HOFFMAN network card (RAC module) is used, alarms are also accessible remotely through the Ethernet and USB connection.

  • Page 15: Displaying Temperature Data On Screen

    To reset the alarms in alarm history folder The controller is designed with ability to reset or clear the alarm history 1. Follow instructions above to enter the passcode and open the reset folder (rStF). 2. The screen displays rSAL on line 2 and nO on line 1, press button the nO is flashing 3.

  • Page 16: Primary-Secondary (Ps) Mode

    5. Any unit that loses communication with the primary unit will enter standalone mode and continue operating based on its own temperature probe until communication is re-established. 6. All temperature setpoints and alarms can be viewed remotely if one of the ACUs is equipped with nVent HOFFMAN network card (RAC module).

  • Page 17: Connecting Units Together In Lead/Lag Mode

    To configure the controller from single mode to PS mode, simply follow below procedures 1. Before proceeding the PS mode configuration for each controller, make sure that the communication cable is connected from one ACU to another using a shielded cable with the shield grounded. 2.

  • Page 18: Air Conditioner Unit Remote Communication Features

    When set to zero ACU1 and ACU2 will automatically alternate every cycle. Air conditioner unit remote communication features Air conditioners that include the optional nVent 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.

  • Page 19: Using Nvent Hoffman Pc Interface Tool

    Using nVent HOFFMAN PC interface tool nVent HOFFMAN PC Interface Tool gives the user the ability to communicate with nVent HOFFMAN air conditioning unit as to read and write air temperature data, high and low temperature alarm setting, active alarms, and other information from the controller remotely using either Ethernet or USB connection.

  • Page 20: Usb Communication Mode

    To view and change the ethernet card (RAC) information • In the nVent HOFFMAN A.C. Monitor main screen, select Single ACU Ethernet Info tab and notice that the Reprogram ACU button is disabled. • Click on Read Ethernet Info button, the Ethernet information will be displayed and the Reprogram ACU button is enable.

  • Page 21: Ethernet Communication Mode

    A/C units configure in the same subnet in the network. Refer to remote access control (RAC) Instruction Manual for configuring multiple units and with text message and email capability in nVent HOFFMAN A.C.

  • Page 22: Remote Access Control Pin-Out

    Remote access control pin-out FUNCTION NAME PIN# WIRE# RETURN BLK75 ENCL MI BLK77 COOL ORG78 – HEAT BRN76 RETURN YEL39 ALAR RELAY OUTPUT YEL38 GROUND BLK40 POWER (24VAC) WHT41 – – INLET TEMP PROBE – DOOR OPEN SWITCH WHT63 GROUND RESERVED –...

  • Page 23: Maintenance

    MAINTENANCE Performing preventative maintenance (PM) helps to keep your nVent HOFFMAN AC unit operating at the highest most efficient levels. Maintenance should be performed at least twice a year, more frequently when in challenging conditions, such as dusty, high humidity, high heat, oily or corrosive environments.

  • Page 24: Refrigerant Loss

    Cleaning Instructions: 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. 3. Recoat the filters with RP Super Filter Coat adhesive. When spraying filter do so from both sides for maximum concentration of adhesive.

  • Page 25: Preventive Maintenance/Inspection

    Preventive Maintenance/Inspection Maintenance/Inspection Recommendations (Perform at least 2 times per year – more frequently as required by operational environment) Last Completed Check Point Description Date Date Date Date Run unit through all modes of operation and record temperatures, Operational voltages, and amperes Inspection Comments: Visually inspect unit for damage, cleanliness, missing, loose, or...

  • Page 26: Trouble Shooting

    TROUBLE SHOOTING Compressor won't start Check cooling set point. Compressor should start when greater than 7 degrees of set temp. Is controller calling for Are there any alarms on Refer to alarm chart in compressor? the controller? manual Verify that wire connections from controller are secure Replace run capacitor...
  • Page 27 Evaporator Coils Freezing (while unit is cooling) Replace Fan Check component Are both the evaporator connections Verify there is voltage to and condenser fan(s) and wiring inoperable fan running? Are fan indicators on the controller Check controller illuminated? settings Replace seals and gaskets Is cabinet properly sealed? Does the unit on enclosure.

  • Page 28: F-Gas Information

    Getting water in the enclosure Clear restriction and check Is drain plugged/restricted? drainage Is cabinet properly sealed? See Evaporator coils (door gaskets, conduit openings, Is unit icing up? freezing flowchart mounting gaskets, etc..) Reseal and monitor while Contact Tech Support unit operating 763-422-2211 ext 1-2-3 For additional technical support:...

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