Exterior Wiring Diagram

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Exterior Wiring Diagram

chiller powercommunication controlchilled W. 3level protectioncontrol interface for non-BROADpump set and cooling towerchilled W. 3-levelprotection1# A/C W. pump on/off2# A/C W. pump on/off1# coolingW. pumppower onrunningfrequency2# cooling W.pump on/offpower onrunningfrequency1# coolingfan2# cooling fan on/off1# hot W. pump on/off2# hot W. pump on/offantisludge pump on/offbiocide pump on/offcooling W. drainvalve on/offflow metersconnector(optional)flow metersconnector(optional)communicationinterface (optional)touch screencommunicationinterfaceBMS controlBMS controlinternet interfacesafety linkageambient temp.A/C waterfuelcooling waterhot waterBMS controlondilution offfaultpower1# A/C W. pump2# A/C W. pump1# cooling W. pump2# cooling W. pump1# hot W. pump2# hot W. pumpantisludge pumpbiocide pumpcooling W. drain valve1# cooling tower fann# cooling tower fanenclosure temp. sensorgas leakage sensordraft fanmachine room lightingshielded cablenon-shielded cableBROAD standard packagedchiller supply scopeBMScontrolsystemtouchscreenenclousurecontrolcabinetBROADpackagerwaterdistributionsystemcontrolcabinet2-core communication cableconnect to internetpowerA/C W. flow meterfuel flow metercooling W. flow meterconductance sensorhot W. flow meterChiller control cabinetpackaged pumpset, coolingtower control interface

Packaged pumpset interface, cooling tower control interface and water system control cabinet will not be supplied if the pumpset and cooling tower are not ordered, but a control interface for user self-purchased pumps and cooling tower is available. The enclosure control cabinet and relevant electric devices are not supplied if the enclosure is not ordered.

3-level chilled water protection is used to switch off cooling water pump directly in order to prevent tube freezing. Connect T9 environmental temperature sensor to outside place with well-ventilation but without sunshine.