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

Also see for AquaEdge 19XR: Controls operation and troubleshooting Start-up, operation and maintenance instructions Start-up, operation and maintenance instructions

Carrier AquaEdge 19XR 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 op-tions in this manual; factory-supplied but field-installed addi-tional components are referred to as accessories.CHILLER FAMILIARIZATION (Fig. 1 and 2)Chiller Information NameplateThe information nameplate is located on the right side of thechiller control panel.System ComponentsThe components include the cooler and condenser heat ex-changers in separate vessels, motor-compressor, lubricationpackage, control panel, economizer, and motor starter. All con-nections from pressure vessels have external threads to enableeach component to be pressure tested with a threaded pipe capduring factory assembly.CoolerThis vessel (also known as the evaporator) is located under-neath the compressor. The cooler is maintained at lower tem-perature/pressure so evaporating refrigerant can remove heatfrom water flowing through its internal tubes.CondenserThe condenser operates at a higher temperature/pressure thanthe cooler and has water flowing through its internal tubes inorder to remove heat from the refrigerant.Motor-CompressorThis component maintains system temperature and pressuredifferences and moves the heat- carrying refrigerant from thecooler to the condenser. The 19XR two-stage frame 6 andframe 7 compressors are two-stage compressors with twoimpellers.Control PanelThe control panel is the user interface for controlling the chiller.It regulates the chiller’s capacity as required to maintain properleaving chilled water temperature. The control panel:• registers cooler, condenser, and lubricating systempressures• shows chiller operating condition and alarm shutdownconditions• records the total chiller operating hours• sequences chiller start, stop, and recycle under micropro-cessor control• displays status of motor starter• provides access to other CCN (Carrier Comfort Network® )devices and energy management systems• supports languages that may be pre-installed at factory, in-cluding English, Chinese, Spanish, French, and German.EconomizerThis chamber reduces the refrigerant pressure to an intermedi-ate level between the cooler and condenser vessels. In theeconomizer, vapor is separated from the liquid, the separatedvapor flows to the second stage of the compressor, and the liq-uid flows into the cooler. The energy removed from the vapor-ized refrigerant in the economizer allows the liquid refrigerantin the cooler to absorb more heat when it evaporates and bene-fits the overall cooling efficiency cycle.Free-Standing StarterThe starter allows for the proper start and disconnect of electri-cal energy for the compressor-motor, oil pump, oil heater, andcontrol panel.CAUTIONBe aware of electrostatic discharge (static electricity) whenhandling or making contact with circuit boards or moduleconnections. Always touch a chassis (grounded) part to dis-sipate body electrostatic charge before working inside con-trol center.Use extreme care when handling tools near boards andwhen connecting or disconnecting terminal plugs. Circuitboards can easily be damaged. Always hold boards by theedges and avoid 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 PIC 5 control boards have been tested and foundto comply with the limits for a Class A computing devicepursuant to International Standard in North America EN61000-2/3 which are designed to provide reasonable pro-tection against such interference when operated in a com-mercial environment. Operation of this equipment in a resi-dential area is likely to cause interference, in which case theuser, at his own expense, will be required to take whatevermeasures may be required to correct the interference.Always store and transport replacement or defective boardsin anti-static shipping bag.CAUTIONDo NOT punch holes or drill into the top surface of thestarter enclosure for field wiring. Knockouts are providedfor field wiring connections.CAUTIONPROVIDE MACHINE PROTECTION. Store machine andstarter indoors, protected from construction dirt and mois-ture. Inspect under shipping tarps, bags, or crates to be surewater has not collected during transit. Keep protective ship-ping covers in place until machine is ready for installation.CAUTIONWHEN FLUSHING THE WATER SYSTEMS isolate thechiller from the water circuits to prevent damage to the heatexchanger tubes.CCN — Carrier Comfort Network ®ECDW — Entering Condenser WaterECW — Entering Chilled WaterEMS — Energy Management SystemHGBP — Hot Gas BypassHMI — Human Machine InterfaceI/O — Input/OutputISM — Integrated Starter ModuleLCDW — Leaving Condenser WaterLCW — Leaving Chilled WaterLED — Light-Emitting DiodeOLTA — Overload Trip AmpsPIC 5 — Product Integrated Controls 5RLA — Rated Load AmpsSCR — Silicon Controlled RectifierTXV — Thermostatic Expansion ValveVFD — Variable Frequency Drive