Carrier 19XL Power Up the Controls and Check the Oil Heater, Set Up Chiller Control Conguration

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Oil Charge Ð The 19XL compressor holds approxi- mately 8 gal. (30 L) of oil. The chiller will be shipped with oil in the compressor. When the sump is full, the oil level should be no higher than the middle of the upper sight glass and minimum level is the bottom of the lower sight glass (Fig. 2A or 2B). If oil is added, it must meet Carrier's speci- ®cation for centrifugal compressor usage as described in the Oil Speci®cation section on page 63. Charge the oil through the oil charging valve, located near the bottom of the trans- mission housing (Fig. 2A or Fig. 2B). The oil must be pumped from the oil container through the charging valve due to higher refrigerant pressure. The pumping device must be able to lift from 0 to 200 psig (0 to 1380 kPa) or above unit pressure. Oil should only be charged or removed when the chiller is shut down.

Power Up the Controls and Check the Oil Heater

ÐEnsure that an oil level is visible in the compressor before energizing controls. A circuit breaker in the starter energizes the oil heater and the control circuit. When ®rst powered, the LID should display the default screen within a short period of time.

The oil heater is energized by powering the control cir- cuit. This should be done several hours before start-up to minimize oil-refrigerant migration. The oil heater is con- trolled by the PIC and is powered through a contactor in the power panel. Starters contain a separate circuit breaker to power the heater and the control circuit. This set up allows the heater to energize when the main motor circuit breaker is off for service work or extended shutdowns. The oil heater relay status can be viewed on the Status02 table on the LID. Oil sump temperature can be viewed on the LID default screen.

When the Time/Date is con®gured for the ®rst time or if power is lost for more than 3 hours, the oil heat algorithm will take effect before the compressor can start. See the Oil Sump Temperature Control section on page 32 for addi- tional information. The oil pump will then energize for 1 to 2 minutes to bring the oil temperature to normal operating temperature. A LOW OIL TEMPERATURE alert will show on the default LID screen if the operator has the controls set to start.

SOFTWARE VERSION Ð The software version will always be labeled on the PSIO module, and on the back side of the LID module. On both the Controller ID and LID ID display screens, the software version number will also appear.

Set Up Chiller Control Con®guration

Do not operate the chiller before the control con®gu- rations have been checked and a Control Test has been satisfactorily completed. Protection by safety controls cannot be assumed until all control con®gurations have been con®rmed.

As con®guration of the 19XL unit is performed, write down all con®guration settings. A log, such as the one shown on pages CL-1 to CL-2, provides a convenient list for con®gu- ration values.

Input the Design Set Points Ð Access the LID set point screen and view/modify the base demand limit set point, and either the LCW set point or the ECW set point. The PIC can control a set point to either the leaving or entering chilled water. This control method is set in the Equipment Con®gu- ration table, Con®g table.

Input the Local Occupied Schedule (OCCPC01S)

ÐAccess the schedule OCCPC01S screen on the LID and set up the occupied time schedule per the customer's requirements. If no schedule is available, the default is fac- tory set for 24 hours occupied 7 days per week including holidays.

For more information about how to set up a time sched- ule, see the Controls section, page 11.

The CCN Occupied Schedule should be con®gured if a CCN system is being installed or if a secondary time sched- ule is needed.

NOTE: The default CCN Occupied Schedule is OCCPC03S for Software Version 09 and above; the default is OCCPC02S for Software Version 08 and below.

Selecting Refrigerant Type Ð The 19XL control must be con®gured for the refrigerant being used, either HCFC-22 or HFC-134a.

TO CONFIRM REFRIGERANT TYPE Ð Con®rm that the correct refrigerant type is indicated by entering the Controls Test tables on the Service menu, Fig. 17. Select REFRIG- ERANT TYPE. The screen will display the current refrig-

erant setting. Press EXIT softkey to leave the screen with- out changes.

TO CHANGE REFRIGERANT TYPE Ð Enter the Con- trols Test tables on the Service Menu. See Fig. 17. Select

REFRIGERANT TYPE. The screen will display the current

refrigerant setting. Press YES softkey to change the cur-

rent setting. Next, move to the ATTACH TO NETWORK DEVICE screen on the Service menu and the ATTACH TO LOCAL DEVICE to upload the new refrigerant tables.

Input Service Con®gurations Ð The following con- ®gurations require the LID screen to be in the Service por- tion of the menu.

·password

·input time and date

·LID con®guration

·controller identi®cation

·service parameters

·equipment con®guration

·automated control test

PASSWORD Ð When accessing the Service tables, a pass- word must be entered. All LIDs are initially set for a pass- word of 1-1-1-1. This password may be changed in the LID con®guration screen, if desired.

INPUT TIME AND DATE Ð Access the Time and Date table on the Service menu. Input the present time of day, date, and day of the week. ``Holiday Today'' should only be con®gured to ``Yes'' if the present day is a holiday.

CHANGE LID CONFIGURATION IF NECESSARY Ð The LID Con®guration screen is used to view or modify the LID CCN address, change to English or SI units, and to change the password. If there is more than one chiller at the jobsite, change the LID address on each chiller so that each chiller has its own address. Note and record the new address. Change the screen to SI units as required, and change the password if desired.

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Contents Start-Up, Operation, and Maintenance Instructions Safety ConsiderationsContents Contents Introduction Abbreviations and ExplanationsMOTOR/OIL Refrigeration Cooling Cycle Chiller FamiliarizationRefrigeration Cycle 19XL Rear View Condenser In/Out Temperature Sensors Take-Apart Rabbet Fit ConnectorCooler In/Out Temperature Sensors Cooler Pressure Schrader FittingLubrication Cycle Refrigerant Motor Cooling and Oil Cooling CyclesLubrication System Starting Equipment Unit-Mounted Solid-State Starter OptionalMajor PIC Components Panel Locations DenitionsControls PIC Component Panel19XL Controls and Sensor Locations Pressure Transducer, TypicalPower Panel with Options Control and OIL Heater Voltage Selector S1Select LID Operation and Menus FigGeneral − Example of Point Status Screen Status01 Override OperationsExample of Time Schedule Operation Screen 19XL Menu Structure 19XL Service Menu Structure 19XL Service Menu Structure Setpoint Example of Set Point ScreenExample 1 Ð STATUS01 Display Screen Description Range Units Reference Point Name Alarm HistoryLID Screens Menu Status SelectExample 4 Ð Setpoint Display Screen Example 2 Ð STATUS02 Display ScreenExample 3 Ð STATUS03 Display Screen MenuECW Control Option Example 5 Ð Configuration Config Display ScreenExample 6 Ð LEAD/LAG Configuration Display Screen ICE Build TerminationExample 7 Ð SERVICE1 Display Screen Example 9 Ð SERVICE3 Display Screen Example 8 Ð SERVICE2 Display ScreenSpare Alert Enable Menu ServiceDischarge Temperature Example 10 Ð Maintenance MAINT01 Display ScreenExample 11 Ð Maintenance MAINT02 Display Screen Bearing TemperatureDescription RANGE/STATUS Units Reference Point Name Example 12 Ð Maintenance MAINT03 Display ScreenExample 13 Ð Maintenance MAINT04 Display Screen PIC System Functions Page Protective Safety Limits and Control Settings Capacity Overrides Page Page Hgbp Lead/Lag ControlECW Hot Gas BypassPage Ice Build Control Cent CapacityPage Example of Attach to Network Device Screen To LOG onSTART-UP/SHUTDOWN/RECYCLE Sequence FigRecycle Restart Delta T Job Data Required Using the Optional Storage Tank and PumpoutBefore Initial START-UP Equipment Required19XL Leak Test Procedures Page Ð HCFC-22 Pressure Ð Temperature F Ð HCFC-22 Pressure Ð Temperature CTemperature Pressure Ð HFC-134a Pressure Ð Temperature FÐ HFC-134a Pressure Ð Temperature C Page Inspect Wiring Check Optional Pumpout Compressor Water PipCheck Starter MECHANICAL-TYPE StartersBenshaw, Inc. Solid-State Starter Power Stack BENSHAW, INC. SOLID-STATE StarterPower Up the Controls and Check the Oil Heater Set Up Chiller Control CongurationLoad Surge Prevention Occurs TOO Soon Occurs TOO Late Amps Correction Factors For 19XL Motors Volt Motor CodeControl Test Menu Functions Charge Refrigerant into Chiller19XL Chiller Equalization Without PUMP- OUT Unit Tests to be Devices Tested PerformedCooler Refrigerant Charges19XL Total Refrigerant Charge SizeCheck Rotation Initial START-UPDry Run to Test Start-Up Sequence Operating Instructions Check Oil Pressure and Compressor StopCalibrate Motor Current Operator DutiesTo Stop the Chiller Plant Transfer Refrigerant from Storage Tank to Chiller Pumpout and Refrigerant Transfer ProceduresOperating the Optional Pumpout Compressor TstatChillers with Isolation Valves Transfer the Refrigerant from Chiller to Storage TankReturn Refrigerant to Normal Operating Conditions General MaintenanceTest After Service, Repair, or Major Leak Ð If Weekly Maintenance Guide Vane Actuator LinkageTo Change the OIL Scheduled MaintenanceCheck Safety and Operating Controls Monthly Compressor Bearing and Gear Mainten Inspect the Heat Exchanger TubesOptional Pumpout System Controls Troubleshooting Guide MAINT03 MAINT01MAINT02 MAINT04Shutdown with ON/OFF/RESET-OFF Timing OUT or Timed OUTAutorestart in Progress Recycle ShutdownNormal or AUTO.-RESTART LOW Chilled Water Normal RUN with RESET, TEMPERATURE, or Demand Compressor Jumpstart and Refrigerant ProtectionLimited Normal RUN Overrides Active AlertsOUT-OF-RANGE Sensor Failures Chiller Protect Limit Faults Protective LimitChiller Alerts Spare Sensor Alert MessagesOther PROBLEMS/MALFUNCTIONS DESCRIPTION/MALFUNCTION Probable CAUSE/REMEDYÐ Thermistor Temperature F vs Resistance/Voltage Drop Temperature Voltage Resistance DropÐ Thermistor Temperature C vs Resistance/Voltage Drop Input Options Module Control ModulesModule Address Options Module Starter Management Module SMM FigProcessor Module Psio Fig Installation Switch Options Setting ModuleTypical Benshaw, Inc. Solid-State Starter internal View Page Page RV1 Benshaw, Inc. Solid-State Starter Troubleshooting GuideProblem Probable Causes Area of Correction SCRCooler Heat Exchanger DataAdditional Data for Marine Waterboxes CondenserCondensers Waterbox Cover WeightsCoolers 1034 kPaOptional Pumpout System Electrical Data Compressor/Motor WeightsCompressor Weights Compressor Fits and Clearances Ft-lb Compressor Assembly TorquesDescription Torque ``ZComm CLRCOM EXTPage CLR Page Chiller Power Panel, Starter Assembly Motor Wiring Schematic Chiller Power Panel, Starter Assembly Motor Wiring Schematic GFR PMRPOT HPSTypical Wye-Delta Unit Mounted Starter Wiring Schematic Index Index Copyright 1996 Carrier Corporation

19XL specifications

The Carrier 19XL is a highly regarded commercial heating and cooling solution, designed to provide optimum performance and energy efficiency in various applications. This rooftop unit is engineered to meet the diverse needs of businesses, making it an ideal choice for those requiring reliable climate control in their facilities.

One of the standout features of the Carrier 19XL is its advanced cooling and heating capabilities. The unit utilizes a high-efficiency scroll compressor that ensures a quieter operation and improved reliability. The system can operate across a wide range of temperatures, making it versatile for various climates. Additionally, it offers both cooling and heating options, allowing for year-round comfort.

Energy efficiency is a focal point of the 19XL design. With an impressive Seasonal Energy Efficiency Ratio (SEER) and Heating Seasonal Performance Factor (HSPF), this unit not only helps reduce energy costs but also supports environmental sustainability initiatives. The unit is equipped with environmentally friendly refrigerants, further contributing to lower greenhouse gas emissions.

The Carrier 19XL features a user-friendly control system, allowing for easy monitoring and management of the unit's performance. This control system is designed to maximize energy savings, offering features such as demand control ventilation and integrated economizers that facilitate the use of outdoor air for cooling, reducing reliance on mechanical systems when conditions allow.

Construction-wise, the Carrier 19XL is built to withstand tough environmental conditions. Its robust cabinet is made from galvanized steel, providing durability and protection against the elements. The design also includes insulation to minimize noise levels, creating a more comfortable indoor environment.

Maintenance is a key consideration in the design of the 19XL. The unit features accessible service ports and a simplified access panel, allowing technicians to perform routine maintenance with ease. This proactive design helps ensure the longevity of the system and minimizes downtime, keeping operations running smoothly.

In summary, the Carrier 19XL is an exceptional choice for commercial heating and cooling needs. With its energy-efficient features, advanced technology, and durable construction, it stands out as a reliable solution for businesses looking for sustainable climate control options.
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