Carrier XRV, 19XR specifications Inspect Wiring, Perform dehydration as follows

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Chiller Dehydration — Dehydration is recommended if the chiller has been open for a considerable period of time, if the chiller is known to contain moisture, or if there has been a complete loss of chiller holding charge or refrigerant pressure.

Do not start or megohm-test the compressor motor or oil pump motor, even for a rotation check, if the chiller is under dehydration vacuum. Insulation breakdown and severe damage may result.

Inside-delta type starters must be disconnected by an isola- tion switch before placing the machine under a vacuum because one lead of each phase is live with respect to ground even though there is not a complete circuit to run the motor. To be safe, isolate any starter before evacuating the chiller if you are not sure if there are live leads to the hermetic motor.

Dehydration can be done at room temperatures. Using a cold trap (Fig. 31) may substantially reduce the time required to complete the dehydration. The higher the room temperature, the faster dehydration takes place. At low room temperatures, a very deep vacuum is required to boil off any moisture. If low ambient temperatures are involved, contact a qualified service representative for the dehydration techniques required.

Perform dehydration as follows:

1.Connect a high capacity vacuum pump (5 cfm [.002 m3/s] or larger is recommended) to the refrigerant charging valve (Fig. 2). Tubing from the pump to the chiller should be as short in length and as large in diameter as possible to provide least resistance to gas flow.

2.Use an absolute pressure manometer or a wet bulb vacu- um indicator to measure the vacuum. Open the shutoff valve to the vacuum indicator only when taking a read- ing. Leave the valve open for 3 minutes to allow the indi- cator vacuum to equalize with the chiller vacuum.

3.If the entire chiller is to be dehydrated, open all isolation valves (if present).

4.With the chiller ambient temperature at 60 F (15.6 C) or higher, operate the vacuum pump until the manometer reads 29.8 in. Hg vac, ref 30 in. bar. (0.1 psia) (–100.61 kPa) or a vacuum indicator reads 35 F (1.7 C). Operate the pump an additional 2 hours.

Do not apply a greater vacuum than 29.82 in. Hg vac (757.4 mm Hg) or go below 33 F (.56 C) on the wet bulb vacuum indicator. At this temperature and pressure, iso- lated pockets of moisture can turn into ice. The slow rate of evaporation (sublimation) of ice at these low tempera- tures and pressures greatly increases dehydration time.

5.Valve off the vacuum pump, stop the pump, and record the instrument reading.

6.After a 2-hour wait, take another instrument reading. If the reading has not changed, dehydration is complete. If the reading indicates vacuum loss, repeat Steps 4 and 5.

7.If the reading continues to change after several attempts, perform a leak test up to the maximum 160 psig (1103 kPa) pressure. Locate and repair the leak, and re- peat dehydration.

Fig. 31 — Dehydration Cold Trap

Inspect Water Piping — Refer to piping diagrams pro- vided in the certified drawings and the piping instructions in the 19XR Installation Instructions manual. Inspect the piping to the cooler and condenser. Be sure that the flow directions are correct and that all piping specifications have been met.

Piping systems must be properly vented with no stress on waterbox nozzles and covers. Water flows through the cooler and condenser must meet job requirements. Measure the pres- sure drop across the cooler and the condenser.

Water must be within design limits, clean, and treated to ensure proper chiller performance and to reduce the poten- tial of tube damage due to corrosion, scaling, or erosion. Carrier assumes no responsibility for chiller damage result- ing from untreated or improperly treated water.

Check Optional Pumpout Compressor Water Piping — If the optional pumpout storage tank and/or pumpout system are installed, check to ensure the pumpout condenser water has been piped in. Check for field-supplied shutoff valves and controls as specified in the job data. Check for refrigerant leaks on field-installed piping. See Fig. 29 and 30.

Check Relief Valves — Be sure the relief valves have been piped to the outdoors in compliance with the latest edition of ANSI/ASHRAE Standard 15 and applicable local safety codes. Piping connections must allow for access to the valve mechanism for periodic inspection and leak testing.

The 19XR relief valves are set to relieve at the 185 psig (1275 kPa) chiller design pressure.

Inspect Wiring

Do not check the voltage supply without proper equipment and precautions. Serious injury may result. Follow power company recommendations.

Do not apply any kind of test voltage, even for a rotation check, if the chiller is under a dehydration vacuum. Insula- tion breakdown and serious damage may result.

1.Examine the wiring for conformance to the job wiring di- agrams and all applicable electrical codes.

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Contents Safety Considerations Start-Up, Operation, and Maintenance InstructionsContents Contents Abbreviations and Explanations Introduction19XR Identification Chiller FamiliarizationTypical 19XR Components Motor and Lubricating OIL Cooling Cycle Refrigeration CycleLubrication Cycle VFD Cooling CycleUnit-Mounted Solid-State Starter Optional Starting EquipmentDefinitions Unit-Mounted Wye-Delta Starter OptionalControls Variable Frequency Drive VFD 19XR Controls and Sensor Locations PIC II Component Panel Location Major PIC II Components Panel LocationsControl Panel CVC/ICVC Operation and Menus Fig Example of Status Screen 19XR Chiller Display Menu Structure CVC/ICVC 19XR Service Menu Structure Time and Date Example of Time Schedule Operation Screen Example of Set Point Screen CVC/ICVC Display Data Example 1 Chiller Display Default ScreenDescription Status Units Point Example 2 Maintstat Display ScreenExample 3 Startup Display Screen Startup Description Status Units PointExample 5 Heatex Display Screen Example 4 Compress Display ScreenExample 7 Ismstat Display Screen Example 6 Power Display ScreenExample 8 CVC/ICVCPSWD Display Screen Menu Setpoint Select Description Status Units Point DefaultCVC Icvc Description Status Units Point Example 9 Setpoint Display ScreenExample 12 Llmaint Display Screen Example 11 Override Display ScreenControl Algorithm Status Override Description Units Point Control Algorithm Status Wsmdefme Description Units Point Example 13 Ismhist Display ScreenExample 14 Wsmdefme Display Screen Ismconf Description Status Units Point Default ISM Starter Config DataExample 15 Netopt Display Screen Example 16 Ismconf Display ScreenExample 17 Options Display Screen Example 18 SETUP1 Display ScreenSpare ALERT/ALARM Enable LAG=2, STANDBY=3 Example 19 SETUP2 Display ScreenExample 20 Leadlag Display Screen Reset Type Description Status Units Point DefaultExample 21 Rampdem Display Screen Example 22 Tempctl Display ScreenSurge Prevention Mode occurs when Active Delta T Normal Control mode occurs when Active Delta TMode IGV VFD PIC II System FunctionsPage Protective Safety Limits and Control Settings Page Capacity Overrides Evaporator Freeze Protection Icvc only a Page Head Pressure Reference Output Surge Protection Fixed Speed ChillerPage Page Point Example of Attach to Network Device Screen Example of Holiday Period Screen START-UP/SHUTDOWN Default CVC/ICVC screen, press the MenuRecycle Sequence Fig Local Start-Up Local start-up or a manual start-up isEntering Condenser Water temperature plus 3 F -1.6C Equipment Required Before Initial START-UPJob Data Required 19XR Leak Test Procedures Page Page Temperature Pressure HFC-134a Pressure Temperature FHFC-134a Pressure Temperature C Perform dehydration as follows Inspect WiringWhite G Check StarterManufacturer Cable no Software Configuration Parameter Benshaw RediStart Micro Menu Items Verify VFD Configuration and Change Parameters if Necessary Description Settings VFD Title Setting ParameterDescription Setting Press Menu Press Status Press Compress Press Select Press Status Press Compress Press SelectLoad Surge Prevention Occurs TOO Soon Occurs TOO Late Estimated Minimum Load ConditionsCCM Temperature Thermistors Tests to be Devices Tested Performed Charge Refrigerant into ChillerControl Test Menu Functions Refrigerant HFC-134a Charge Initial START-UPCheck Oil Pressure and Compressor Stop Dry Run to Test Start-Up SequenceCheck Motor Rotation Operator Duties Operating InstructionsTo Start the Chiller To Stop the ChillerOperating the Optional Pumpout Unit Pumpout and Refrigerant Transfer ProceduresTime Date Cooler Condenser CompressorBearing FLAValve Condition Turn off pumpout condenser waterChillers with Isolation Valves Test After Service, Repair, or Major Leak If General MaintenanceGuide Vane Actuator Linkage Weekly MaintenanceCheck Safety and Operating Controls Monthly Scheduled MaintenanceInspect the Heat Exchanger Tubes and Flow Devices Compressor Bearing and Gear MaintenanceOptional Pumpout System Controls Ordering Replacement Chiller Parts WhenChecking Pressure Transducers Troubleshooting GuideOccdefcm HeatexLlmaint Shutdown in Progress Terminate Pumpdown ModeICE Build Ready to StartAlert PrestartAutorestart in Progress Running Temp ControlRUN Capacity FaultLimited SensorFailure to ProtectiveStart StopCommunication LossPotential FREEZE-UPLOW OIL Pressure Sensor AlertAutorestart PendingRecycle Pressure AlertOption Sensor DiffuserDrop Thermistor Temperature F vs. Resistance/Voltage DropTemperature PIC Resistance Thermistor Temperature C vs. Resistance/Voltage DropControl Modules Power is connected to Plug J1 on each moduleReplacing Defective Processor Modules Chiller Control Module CCM FigIntegrated Starter Module Fig Integratedstartermodule Checked Measure SCR Pairs Recorded Being BetweenNumber of Tubes English Code Heat Exchanger Data EnglishNumber of Tubes Code Heat Exchanger Data SI19XR Additional Data for Marine Waterboxes Compressor WeightsEnglish Motor 19XR Motor Weights Standard and High Efficiency Motors19XR Waterbox Cover Weights English lb 19XR Waterbox Cover Weights SI kg Motor Voltage Code Additional Miscellaneous WeightsOptional Pumpout System Electrical Data Description Torque Compressor Assembly TorquesCompressor Code View B High Speed Shaft 19XR Compressor ClearancesAllen-Bradley Wye-Delta Unit-Mounted Starter 100101 ISM 102Temp 103104 105 106 107 Power Panel Wiring Schematic108 Cutler-Hammer Wye Delta Unit Mounted Starter Sizes 3-5DP109 Cutler-Hammer Wye Delta Unit Mounted Starter Size 6DPSeparate Metering Option Ground Fault Phase Current Option111 AUX 112FU Fuse 113114 VFD 115116 Typical Variable Frequency Drive VFD Wiring Schematic117 118 119 120 121 122 Index Index JOB Data Required Remove and use for job fileCL-2 Inspect Wiring and Record Electrical Data Ratings10 to 40 to 10060.0 15 toCL-4 460 200 to105 to 115 85 to50 to 30 to20 to Psi CL-690 to 150 to125 125 toAmp 250 CL-8 65 to90 to 100 CL-9 25 toCL-10 50 to 1450200 0000 to0000 to 0200 CL-11004 To H.022 Job Sheet 60 for 60 Hz and 50 for 50 Hz 002 Power Module Dependent Selected motor 100% amps028 10 to Job Sheet 60 for 60 Hz and 50 for 50 Hz 000 100 to Selected line voltageCL-13 CL-14 CCN Local ResetPage Incurring obligations
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19XR, XRV specifications

The Carrier 19XR and 19XRV chillers are sophisticated cooling solutions that represent the forefront of HVAC technology. Designed for large commercial and industrial applications, these chillers provide exceptional performance, energy efficiency, and reliability, making them ideal for a variety of environments ranging from hospitals to manufacturing facilities.

One of the most significant features of the Carrier 19XR and 19XRV chillers is their advanced scroll compressor technology. These units employ a tandem scroll design that enhances efficiency while minimizing operational noise. This makes them ideal for urban environments where noise restrictions may be in place. Moreover, the compressors are equipped with variable speed drive options in the 19XRV model, which allows for greater energy savings by adjusting cooling output based on real-time demand.

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The units are engineered with a robust heat exchanger design, which enhances heat transfer efficiency and overall system performance. This ensures optimal operation even in extreme conditions. They feature a microprocessor-based control system that allows for precise monitoring and control of the chiller’s performance, enabling operators to make real-time adjustments to maximize energy efficiency.

The Carrier 19XR and 19XRV chillers also prioritize serviceability. The design incorporates easy access to key components, simplifying maintenance procedures and reducing downtime. This focus on maintainability extends the lifespan of the equipment, leading to lower lifecycle costs.

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Overall, the Carrier 19XR and 19XRV chillers stand out in the market for their blend of cutting-edge technology, energy efficiency, and user-friendly features. They are engineered to meet the demanding needs of modern commercial and industrial applications, making them a preferred choice for facility managers seeking reliable cooling solutions.
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