Carrier AquaEdge 19DV Series Start-up, Operation And Maintenance Instructions Manual

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

Carrier AquaEdge 19DV Series Start-up, Operation And Maintenance Instructions Manual Manual pdf 4 page image

4ABBREVIATIONS AND EXPLANATIONSFrequently used abbreviations in this manual include:Factory-installed additional components are referred to as optionsin this manual; factory-supplied but field-installed additional com-ponents are referred to as accessories.CHILLER FAMILIARIZATION (Fig. 1 and 2)Chiller Information NameplateThe information nameplate is located on the left side of thechiller control panel.System ComponentsThe main components include the evaporator and condenserheat exchangers in separate vessels, motor-compressor, refrig-erant, lubrication package, control panels, PIC6 Touch ScreenHMI, economizer, VFD, and purge system.EvaporatorThis vessel is located underneath the compressor. The evapora-tor is maintained at a lower temperature/pressure so evaporat-ing refrigerant can remove heat from water flowing through itsinternal tubes. Water flows through the internal tubes to pro-vide comfort or process cooling.CondenserThe condenser operates at a higher temperature/pressure than theevaporator and has water flowing through its internal tubes in or-der to remove heat from the refrigerant. It contains a metering de-vice that regulates the flow of refrigerant into the economizer.EconomizerThis chamber reduces the refrigerant pressure to an intermediatelevel between the evaporator and condenser vessels. In the econ-omizer, vapor is separated from the liquid, the separated vaporflows to the second stage of the compressor, and the liquid flowsinto the evaporator. The energy removed from the vaporized re-frigerant in the economizer allows the liquid refrigerant in theevaporator to absorb more heat when it evaporates and benefitsthe overall cooling efficiency cycle. It contains a float assemblythat regulates the flow of refrigerant into the evaporator.Motor-CompressorThis component maintains system temperature and pressuredifferences and moves the heat-carrying refrigerant from theevaporator to the condenser. The 19DV utilizes a two-stageback to back direct drive configuration.Purge UnitThis is a small independent condensing unit with compressor, sep-arator, regenerative carbon filters, heater and vacuum pump. Thepurge extracts gas from condenser (or from compressor if unit isnot in operation) and purifies it by removing non-condensablegases and any water vapor that may be present.Variable Frequency Drive (VFD)The VFD variable frequency is a voltage source design thatconverts line voltage into PWM (pulse width modulating) mo-tor input for motor speed and torque control.Refrigerant Lubrication SystemThis system provides lubrication to the compressor bearing bymeans of a refrigerant pump.Chiller Control PanelThis control panel includes the input and output boards (IOBs),control transformer, relays, contactors, and circuit breakers. It pro-vides the power distribution and protection to the electrical com-ponents installed on chiller and has the following functions:• Communication with PIC6 touch screen• Communication with purge panel• Communication with VFD• Sensor input and outputs• Actuators control• Refrigerant pump controlCAUTIONWHEN FLUSHING THE WATER SYSTEMS isolate thechiller from the water circuits to prevent damage to the heatexchanger tubes.CAUTIONThis unit uses a microprocessor control system. Do notshort or jumper between terminations on circuit boards ormodules; control or board failure may result.Be aware of electrostatic discharge (static electricity) whenhandling or making contact with circuit boards or moduleconnections. Always touch a chassis (grounded) part todissipate body electrostatic charge before working insidecontrol center or use a grounding strap before handlingprinted circuit boards.Use extreme care when handling tools near boards and whenconnecting or disconnecting terminal plugs. Circuit boards caneasily be damaged. Always hold boards by the edges andavoid touching components and connections.This equipment uses, and can radiate, radio frequency ener-gy. If not installed and used in accordance with the instruc-tion manual, it may cause interference to radio communica-tions. The PIC6 control boards have been tested and found tocomply with the limits for a Class A computing device pur-suant to International Standard in North America EN 61000-2/3 which are designed to provide reasonable protectionagainst such interference when operated in a commercial en-vironment. Operation of this equipment in a residential areais likely to cause interference, in which case the user, at hisown expense, will be required to take whatever measuresmay be required to correct the interference.Always store and transport replacement or defective boardsin anti-static shipping bag.AWG — American Wire GageBMS — Building Management SystemCCN — Carrier Comfort Network ®DCIB — Digital Control Interface BoardDVM — Digital Volt-OhmmeterEC — Envelope ControlECDW — Entering Condenser WaterECW — Entering Chilled WaterEMS — Energy Management SystemHMI — Human Machine InterfaceHVIB — High Voltage Interface BoardI/O — Input/OutputIGBT — Insulated-Gate Bipolar TransistorIGV — Inlet Guide VaneIOB — Input Output BoardLCDW — Leaving Condenser WaterLCW — Leaving Chilled WaterLED — Light-Emitting DiodeMAWP — Maximum Allowable Working PressureNSTV — Network Service Tool VOLTA — Overload Trip AmpsPIC — Product Integrated ControlsPPE — Protective Personal EquipmentPWM — Pulse Width ModulatingRLA — Rated Load AmpsRMS — Root Mean SquareSCCR — Short Circuit Current RatingSCR — Silicon Controlled RectifierSIOB — Starfire 2 Input Output BoardTXV — Thermostatic Expansion ValveVFD — Variable Frequency DriveVPF — Variable Primary Flow