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nVent Hoffman Spectracool G52 Instruction Manual
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nVent Hoffman Spectracool G52 Instruction Manual

1-phase model
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We connect and protect
Spectracool
Air Conditioner
G52 1-Phase Model
Instruction Manual
R513A
P/N 89246225 Rev. A

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Summary of Contents for nVent Hoffman Spectracool G52

  • Page 1 We connect and protect Spectracool Air Conditioner G52 1-Phase Model Instruction Manual R513A P/N 89246225 Rev. A...
  • Page 2 TABLE OF CONTENTS Warranty And Return Policy ..................................3 General Safety Instructions ..................................4 Receiving The Air Conditioner ..................................4 Handling And Testing The Air Conditioner ..............................4 How To Read Model Numbers ..................................4 Installation Instructions ....................................5 Dimension Drawing .....................................6 Mounting Cutout Dimensions ..................................7 Wire Diagrams And Schematics ..................................8 G52 12K 115 V with Thermostat Control Generic Wire Diagram (actual unit options may vary) ..............8 G52 12K 115 V with Thermostat Control Generic Schematic (actual unit options may vary) ................9...
  • Page 3 Air Conditioner Unit Remote Communication Features ..........................29 USB communication ......................................29 Ethernet communication .....................................29 Using nVent HOFFMAN PC Interface Tool ..............................30 USB communication mode ....................................30 To view the controller data information from the A/C unit ........................30 To change the temperature settings to the controller ..........................30 To view and change the ethernet card (RAC) information ........................30...
  • Page 4 GENERAL SAFETY INSTRUCTIONS Observe the following general safety instructions for installation and operation of this product: • This appliance is for installation only in locations not accessible to the general public. • This appliance is not intended for use by persons, including children, with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning the use of the appliance by a person responsible for their safety.
  • Page 5 INSTALLATION INSTRUCTIONS 1. Inspect the air conditioner and verify correct functionality before mounting the air conditioner. See HANDLING AND TESTING THE AIR CONDITIONER on page 4. 2. Using the cutout dimensions shown in this manual, prepare the air “IN” and air “OUT” openings, and mounting bolt hole pattern for the enclosure.
  • Page 6 DIMENSION DRAWING nVent.com/HOFFMAN...
  • Page 7 MOUNTING CUTOUT DIMENSIONS Note: Mounting Gasket Adheres to Air Conditioner. nVent.com/HOFFMAN ITEM NO. PART NUMBER DESCRIPTION QTY. 89096884 FLTR AIR 20 X 17 X .34 89169167 COMP, RGA5470YXA, 115V...
  • Page 8 WIRE DIAGRAMS AND SCHEMATICS G52 12K 115 V with Thermostat Control Generic Wire Diagram (actual unit options may vary) 50/60 Hz REV D nVent.com/HOFFMAN...
  • Page 9 G52 12K 115 V with Thermostat Control Generic Schematic (actual unit options may vary) 88016277 REV B nVent.com/HOFFMAN...
  • Page 10 G52 8K 115 V with Thermostat Control Generic Wire Diagram (actual unit options may vary) 50/60 Hz 89081442 REV D nVent.com/HOFFMAN...
  • Page 11 G52 8K 115 V with Thermostat Control Generic Schematic (actual unit options may vary) 88016182 REV C nVent.com/HOFFMAN...
  • Page 12 G52 8K and 12K 230 V with Thermostat Control Generic Wire Diagram (actual unit options may vary) 50/60 HZ 89168349 REV D nVent.com/HOFFMAN...
  • Page 13 G52 8K and 12K 230 V with Thermostat Control Generic Schematic (actual unit options may vary) nVent.com/HOFFMAN...
  • Page 14 G52 8K and 12K 115 V with Remote Access Control Generic Wire Diagram (actual unit options may vary) 50/60 HZ 89203839 REV.E nVent.com/HOFFMAN...
  • Page 15 G52 8K and 12K 115 V with Remote Access Control Generic Schematic (actual unit options may vary) 89203840 REV C nVent.com/HOFFMAN...
  • Page 16 G52 8K and 12K 230 V with Remote Access Control Generic Wire Diagram (actual unit options may vary) 50/60 HZ 89205274 REV.E nVent.com/HOFFMAN...
  • Page 17 G52 8K and 12K 230 V with Remote Access Control Generic Schematic (actual unit options may vary) 89205418 REV C nVent.com/HOFFMAN...
  • Page 18 COMPONENT LIST G520816GXXX G520826GXXX G521216GXXX G521226GXXX 115 Volt 1-Phase 230 Volt 1-Phase 115 Volt 1-Phase 230 Volt 1-Phase 50/60 Hz 50/60 Hz 50/60 Hz 50/60 Hz Part Description 8000 BTU 8000 BTU 12000 BTU 12000 BTU Capacitor, Impellers 52603213SP 52603213SP 52603214SP Capacitor, Compressor, Run 89172425SP...
  • Page 19 DESCRIPTION QTY. FLTR AIR 20 X 17 X .34 COMP, RGA5470YXA, 115V IMPELLER, 115 VAC, 220MM PARTS LIST COIL,CONDR .866 2 ROW ELECTRO 8k TBLK, 4-POLE T ' STAT, SPDT, 55-110 F Part Description Part No. CAP RUN 60 MFD/370V TRANS, CNTL 120-10V, 2.5VA 89096884SP Filter, Air, Reusable...
  • Page 20 TECHNICAL INFORMATION Design Data Max Ambient Shipping Full Load BTU/Hr @ Max Temperature Weight Model Voltage Phase MOPD Amps Cooling Amps Ambient Temperature °F/°C lb/kg 15/25 G520816GXXX 50/60 9.9/11.4 7611/8363 131/55 128/58.1 (Heater Option) G520826GXXX 230/208-230 50/60 5.6/7.0-6.2 7300/8200 131/55 128/58.1 15/25 G521216GXXX...
  • Page 21 Cooling/heating setpoint, cooling/heating differential and high/ low temperature setpoint are designed to be adjustable by the operator. All alarms are outputted through the alarm relay. In addition, if nVent HOFFMAN network card (Remote Access Control (RAC) Module) is used the parameters that state above and alarms are accessible remotely through Ethernet connection utilizing SNMP, Modbus TCP, EtherNet/IP, and Profinet protocol.
  • Page 22 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 23 nVent.com/HOFFMAN...
  • Page 24 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 25 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 26 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 27 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 28 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 29 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. nVent provides Windows interface application software that is available to download free from nVent support link https://www.nVent.com/en-us/...
  • Page 30 Ethernet or USB connection. With nVent HOFFMAN PC Interface Tool a user has the ability to remotely manage and monitor hundreds of nVent HOFFMAN air conditioners both domestically and globally at one central location at user’s own pace, so long as all air conditioners are configured in the same subnet in the network.
  • Page 31 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 32 Remote access control pin-out FUNCTION NAME PIN# WIRE# RETURN BLK75 ENCL MI BLK77 COOL ORG78 – HEAT BRN76 RETURN YEL39 ALARM RELAY OUTPUT YEL38 GROUND BLK40 POWER (24 VAC) WHT41 – – INLET TEMP PROBE – DOOR OPEN SWITCH WHT63 GROUND RESERVED –...
  • Page 33 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 34 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 35 PREVENTATIVE 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 Inspection voltages, and amperes Comments: Visually inspect unit for damage, cleanliness, missing, loose, or...
  • Page 36 TROUBLE SHOOTING Compressor wont start (Unit w/ Manual Tstat) Possible Causes: Replace capacitor(s) - Bad Cooling If applicable: Check Is the enclosure temp Do you have voltage Contactor / Relay capacitor(s) for 10°F above set point. at compressor? - Loose Wiring proper capacitance.
  • Page 37 “Unit wont Cool” w/ Manual Tstat 115 V/230 V/460 V Does the unit have correct Correct voltage and retest.OR supply voltage? Contact certified electrician. Clean and re-test 115 V/ 460 V 260 V Contact Is the phase Is the Verify filter Is the Does Technical...
  • Page 38 Evaporator Coils Freezing (Unit w/ Manual Tstat) Possible Causes: - Electrical Possible Causes: connections Are the evaporator Is there - Faulty electrical connections for one or both fans. - Bad fan and condenser voltage to the Condenser Fan: fan(s) running? inoperable fan? - Bad HPC (if equipped) Does the capacitor...
  • Page 39 Unit Tripping Breaker (Controller or Manual Tstat) Check power connections and Does breaker components for possible short circuit. trip instantaneosly? Verify correct power supply. Is the compressor shorted Does breaker trip when Replace Compressor to ground? Compressor comes on? Are fuse / breaker the correct type Check electrical connections and component amp draw.
  • Page 40 For additional technical support: • Call 763-422-2211 or • Email cooling.service@nVent.com or • Download Field Service Request (FSR) from: http://HOFFMAN.nVent.com/en-us/cooling-field-service-request F-GAS INFORMATION G520816GXXX G520826GXXX G521216GXXX G521226GXXX Refrigerant Kühlmittel R513A R513A R513A R513A Chłodziwo Factory Charge 567 Grams 680 Grams 1077 Grams 1021 Grams Füllmenge durch Hersteller 567 Gramm...
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  • Page 48 nVent 2100 Hoffman Way Anoka, MN 55303 USA Tel +1.763.422.2211 Fax +1.763.576.3200 nVent.com Our powerful portfolio of brands: ©2024 nVent. All nVent marks and logos are owned or licensed by nVent Services GmbH or its affiliates. All other trademarks are the property of their respective owners.