Hardware architecture
Table 2 - Inputs and output summary list
| TRACER CH532 Medium | TRACER CH532 Large |
| Single circuit units | Dual circuit units |
AI: Leaving water temperature sensor | B3: NTC | B3: NTC |
AI: Entering water temperature sensor | B4: NTC | B4: NTC |
AI: Ambient temperature sensor | B5: NTC | B5: NTC l |
AI: Suction pressure circuit 1 - LP1 transducer | B1: 4..20mA | B1: 4..20mA |
AI: Suction pressure circuit 2 - LP2 transducer |
| B6: 4..20mA |
AI: Discharge pressure circuit 1 - HP1 transducer | B2: 4..20mA | B2: 4..20mA |
AI: Discharge pressure circuit 2 - HP2 transducer |
| B7: 4..20mA |
AI: External water setpoint reset (option) | B8: | B8: |
AI: Unused | B6, B7 | B9, B10 |
DI: Compressor C circuit 1 fault | ID1: 24Vac | ID1: 24Vac |
DI: Compressor C circuit 2 fault |
| ID17: 24Vac |
DI: Compressor A circuit 1 fault | ID3: 24Vac | ID3: 24Vac |
DI: Compressor B circuit 1 fault | ID4: 24Vac | ID4: 24Vac |
DI: Compressor A circuit 2 fault |
| ID11: 24Vac |
DI: Compressor B circuit 2 fault |
| ID12: 24Vac |
DI: High pressure | ID14H: 230Vac | ID14H: 230Vac |
DI: High pressure |
| ID15H: 230Vac |
DI: Auxiliary set point On/Off | ID8: 24Vac | ID8: 24Vac |
DI: Fans circuit 1 fault | ID5: 24Vac | ID5: 24Vac |
DI: Fans circuit 2 fault |
| ID18: 24Vac |
DI: Circuit 1 On/Off (or Unit On/Off CH 532 medium) | ID13H: 230Vac | ID13H: 230Vac |
DI: Circuit 2 On/Off |
| ID16H: 230Vac |
DI: Water flow control input | ID2: 24Vac | ID2: 24Vac |
DI: Water pump 1 fault | ID9: 24Vac | ID9: 24Vac |
DI: Water pump 2 fault | ID10: 24Vac | ID10: 24Vac |
DI: Faults external reset | ID6: 24Vac | ID6: 24Vac |
DI: Cooling/Heating mode switch | ID7: 24Vac | ID7: 24Vac |
DI: Unused | ID11, ID12 | - |
DO: Compressor A circuit 1 output | NO7: | NO7: |
DO: Compressors B and C circuit 1 output | NO8: | NO8: |
DO: Compressor A circuit 2 output |
| NO13: |
DO: Compressors B and C circuit 2 output |
| NO14: |
DO: Fan 1 output Wye (Y) contactor - circuit 1 | NO3: | NO3: |
DO: Fan 1 output Delta (D) contactor - circuit 1 | NO4: | NO4: |
DO: Fan 2 output circuit 1 | NO5: | NO5: |
DO: Fan 3 output circuit 1 | NO6: | NO6: |
DO: Fan 1 output Wye (Y) contactor - circuit 2 |
| NO15: |
DO: Fan 1 output Delta (D) contactor - circuit 2 |
| NO16: |
DO: Fan 2 output circuit 2 |
| NO17: |
DO: Fan 3 output circuit 2 |
| NO18: |
DO: Water pump 1 | NO1: | NO1: |
DO: Water pump 2 | NO2: | NO2: |
DO: Antifreeze heater | NC12: | NC12: |
DO: Circuit 1 fault | NO9: | NO9: |
DO: Circuit 2 fault |
| NO11: |
DO: Unit status or additional heating demand | NO10: | NO10: |
DO: Unused | NO11, NO13 | - |
AO: Speed inverter - fan circuit 1 - HP1 output | Y1: 0..10V | Y1: 0..10V |
AO: Speed inverter - fan circuit 2 - HP2 output |
| Y2: 0..10V |
AO: | Y3: 0..10V + CONVONOFF | Y3: 0..10V + CONVONOFF |
AO: Unused | Y4 | Y4 |
AO: |
| Y5: 0..10V + CONVONOFF |
AO: Unused |
| Y6 |
AO: Unused | Y2 | Y2 |
Legend: |
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AI: Analog Input |
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DI: Digital Input |
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AO: Analog Output |
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DO: Digital Output |
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CONVONOFF: ON/OFF converter |
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7 |