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Summary of Contents for nvent SPECTRACOOL G57 Series
- Page 1 SPECTRACOOL Air Conditioner G57 Model (CirCuit BreAker in 3PH Models) INSTRUCTION MANUAL Rev. A © 2022 nVent 89209670 P/N 89209670...
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Page 2: Table Of Contents
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 89209670 - 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 this model uses a 230V coil. FREEZESTAT The freezestat shuts down the compressor during a frozen evaporator coil condition. The freezestat will automatically reset when the frozen coil has thawed sufficiently. © 2022 nVent 89209670 - 4 -... -
Page 5: Time Delay Relay
This transformer and relay are used to start/stop the unit thru a customer supplied, remote mounted door switch. SCHEMATICS AND WIRING DIAGRAMS FOR THERMOSTAT CONTROL G57 208V 1-PHASE GENERIC SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY) 89044386 © 2022 nVent 89209670 - 5 -... -
Page 6: G57 230V 1-Phase Generic Schematic (Actual Unit Options May Vary)
PHASE MONITOR RELAY HTG TSTAT HTG CONTACTOR FREEZE STAT AUTO & MAN DOOR SWITCH LIMIT SWT'S TRANSFORMER RELAY (OPTION) CUST. SWT. CIRCUIT EVAPORATOR BREAKER HEATERS IMPELLER CONDENSER IMPELLER 1 COMPRESSOR CONDENSER IMPELLER 2 89060233 © 2022 nVent 89209670 - 6 -... -
Page 7: G57 208V 1-Phase Generic Wire Diagram (Actual Unit Options May Vary)
G57 208V 1-PHASE GENERIC WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY) © 2022 nVent 89209670 - 7 -... -
Page 8: G57 230V 1-Phase Generic Wire Diagram (Actual Unit Options May Vary)
G57 230V 1-PHASE GENERIC WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY) © 2022 nVent 89209670 - 8 -... -
Page 9: G57 400/460V 3-Phase Generic Wire Diagram (Actual Unit Options May Vary)
G57 400/460V 3-PHASE GENERIC WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY) © 2022 nVent 89209670 - 9 -... -
Page 10: Dimensional Drawings
DIMENSIONAL DRAWINGS 20000 BTU/HR. (G572026GXXX, G572026G2XX) WITH THERMOSTATS 20000 BTU/HR. (G572046G15X) WITH THERMOSTATS © 2022 nVent 89209670 - 10 -... -
Page 11: Installation Instructions
24 VAC terminal strip by noting the locations on the correct wiring diagram. 8. Set thermostat for required cabinet temperature. Refer to Sequence of Operation on page 9 for thermostat adjustment and operation. 88028328 89061034 SURFACE MOUNT SURFACE MOUNT (3-PHASE VOLTAGE) © 2022 nVent 89209670 - 11 -... - Page 12 PARTIAL RECESS MOUNT Figure 1 Cutout Dimensions © 2022 nVent 89209670 - 12 -...
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Page 13: Digital Thermostat Controller
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 89209670 - 14 -...
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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 89209670 - 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 89209670 - 17 -...
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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 89209670 - 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 89209670 - 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 89209670 - 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 89209670 - 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 89209670 - 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 89209670 - 25 -... -
Page 26: Schematic And Wiring Diagram For Remote Access Control
SCHEMATIC AND WIRING DIAGRAM FOR REMOTE ACCESS CONTROL G57 1-PHASE GENERIC SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY) 89203840 REV B © 2022 nVent 89209670 - 26 -... -
Page 27: G57 3-Phase Generic Schematic (Actual Unit Options May Vary)
G57 3-PHASE GENERIC SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY) 89204149 REV B © 2022 nVent 89209670 - 27 -... -
Page 28: (Actual Unit Options May Vary)
G57 1-PHASE GENERIC WIRE DIAGRAM FOR REMOTE ACCESS CONTROL (ACTUAL UNIT OPTIONS MAY VARY) 89205186 REV.B © 2022 nVent 89209670 - 28 -... -
Page 29: G57 3-Phase Generic Wire Diagram For Remote Access Control
G57 3-PHASE GENERIC WIRE DIAGRAM FOR REMOTE ACCESS CONTROL (ACTUAL UNIT OPTIONS MAY VARY) 89205195 REV.B © 2022 nVent 89209670 - 29 -... -
Page 30: Dimensional Drawings
DIMENSIONAL DRAWINGS G57 GENERIC MODEL DRAWING WITH REMOTE ACCESS CONTROL © 2022 nVent 89209670 - 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 89209670 - 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 89209670... -
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 (R407C)
Evaporator Unit Amps(A) In(°F) Delta(°F) Delta(°F) 65-80 9.1-12.2 19-32 19-34 G572026G1XX 80-100 11.1-15.2 26-35 20-34 65-80 11.2-14.1 20-32 28-34 G572026G2XX 80-100 13.1-17.5 26-37 27-34 65-80 3.0-4.5 21-32 24-35 G572046GXXX 80-100 3.5-5.5 26-35 18-30 © 2022 nVent 89209670 - 34 -... -
Page 35: Unit Characteristics
+/- 10% of rated Cooling Amps at Max Conditions 23.5 19.0/22.0 6.0/6.8 Heating Amps 15.0 13.5 Compressor RLA / LRA 13.6/63.0 13.6/63.0 4.3/27.0 Evaporator Fan RLA* 0.8/1.1 0.8/1.1 0.8/1.1 Condenser Fan RLA* 0.8/.86 0.8/.86 0.8/.86 © 2022 nVent 89209670 - 35 -... -
Page 36: Service Data
Limit Switch (automatic) 10-1033-01 10-1033-01 10-1033-01 Limit Switch (manual) 10-1033-07 10-1033-07 10-1033-07 Head Pressure Control Switch (option) 89083015 89083015 89083015 Controller, Basic 89202719 Thermistor 89075654 Bridge Rectifier 89087424 Communication Board 89145457 315 mA Fuse 89085115 © 2022 nVent 89209670 - 36 -... -
Page 37: F-Gas Information
Factory Charge 1417 Grams 1361 Grams Füllmenge durch Hersteller 1417 Gramm 1361 Gramm Opłata Fabryczna 1417 Gramów 1361 Gramów Equivalent 2.51 Tons 2.41 Tons Equivalent 2,51 Tonnen 2,41 Tonnen Ekwilalent 2,51 Tony 2,41 Tony © 2022 nVent 89209670 - 37 -... -
Page 38: 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 © 2022 nVent 89209670 - 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 89209670 - 39 -... -
Page 40: Basic Air Conditioning Trouble Shooting Check List - Remote Access Control Version
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 © 2022 nVent 89209670 - 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 89209670 - 41 -... - Page 42 NOTES © 2022 nVent 89209670 - 42 -...
- Page 43 NOTES © 2022 nVent 89209670 - 43 -...
- Page 44 Rev. A © 2022 nVent 89209670 P/N 89209670...
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