Carrier 19DV Series Installation, Operation And Maintenance Instructions

Also see for AquaEdge 19DV series: Start-up, operation and maintenance instructions Start-up, operation and maintenance instructions Installation instructions Controls operation and troubleshooting Operation and Troubleshooting

Contents

Carrier 19DV Series Installation, Operation And Maintenance Instructions Manual pdf 9 page image

9Any refrigerant transfer and recovery operations must be carried out using a transfer unit for HFO application. Aconnection under the evaporator is supplied with all units for connection to the transfer station. The units mustnever be modified to add refrigerant and oil charging, removal and purging devices. These devices are providedwith the units. Please see to the certified dimensional drawings for the units.2. INTRODUCTION AND CHILLER FAMILIARISATIONPrior to initial start-up of the 19DV unit, those involved in the start-up, operation, and maintenance should bethoroughly familiar with these instructions and other necessary job data. This document is outlined so that youmay become familiar with the control system before performing start-up procedures. Procedures in this manualare arranged in the sequence required for proper chiller start-up and operation.Since 19DV is equipped with VFD (Variable Frequency Drive), special qualifications are required for personnelcommissioning these machines or working on the variable-frequency drive.2.1 Operating conditions rangeTransport and storage of 19DV unitsThe minimum and maximum allowable outside temperatures are:Minimum temperature = -15°CMaximum temperature = +60°C.Operating limitsIn operating the minimum and maximum allowable outside temperatures are:Minimum temperature = +5°CMaximum temperature = +40°C.The operating and storage conditions are as those described for the standard machine. The machines must beinstalled inside the building. Electrical cabinets are protected IP23 in accordance with standard IEC60529-1.The operating range of the selected unit must always be verified at full load and part load by the selection programfor the chosen configuration.The selection program values apply. If they are outside the operating limits below, the selection must be validatedby the factory customer support team.Indicative operating range of 19DV chillerEvaporator (fresh water) Minimum MaximumEvaporator entering water temperature °C 28**Evaporator leaving water temperature °C 3Condenser (water-cooled)Condenser entering water temperature °C 13*Condenser leaving water temperature °C 18 45*: this minimum can be maintained with head pressure control system such as 2 or 3 way valve or any other applicabledevices…** : In operation or before starting, the user must maintain a water inlet temperature at the evaporator of 28 ° C maximum toavoid, in the event of extreme failure of the control system and the pressure switches, any risk of overpressure causing reliefvalve exhaust.When chiller is stopped, the maximum permissible circulation temperature in the exchangers is 65 ° C. Higher temperatures canresult in a risk of valve tripping.2.2 Abbreviations and explanationsFrequently used abbreviations in this manual include:CCN — Carrier Comfort NetworkCCW — Counter Clock WiseCW — Clock WiseCHWR — Chilled Water ReclaimCHWS — Chilled Water SupplyECDW — Entering Condenser WaterECW — Entering Chilled WaterEMS — Energy Management SystemI/O — Input /OutputIOB — Input /Output BoardLCDW — Leaving Condenser WaterLCW — Leaving Chilled WaterLED — Light-Emitting DiodeOLTA — Overload Trip AmpsPIC 5+ — Product Integrated Controls version 5 and more