Carrier 19XL specifications

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START-UP/RECYCLE OPERATION Ð If the chiller is not running when ice build activates, then the PIC checks the following parameters, based on the ICE BUILD TERMINA- TION value, to avoid starting the compressor unnecessarily:

·if ICE BUILD TERMINATION is set to the temperature only option (zero) and the ENTERING CHILLED WATER temperature is less than or equal to the ICE BUILD SET POINT;

·if ICE BUILD TERMINATION is set to the contacts only option (1) and the remote contacts are open;

·if the ICE BUILD TERMINATION is set to the both tem- perature and contacts option (2) and ENTERING CHILLED WATER temperature is less than or equal to the ICE BUILD SET POINT and remote contacts are open.

The ICE BUILD RECYCLE OPTION determines whether or not the PIC will go into a RECYCLE mode. If the ICE BUILD RECYCLE OPTION is set to DSABLE (disable) when the ice build terminates, the PIC will revert back to normal temperature control duty. If the ICE BUILD RECYCLE OPTION is set to ENABLE, when ice build terminates, the PIC will go into an ICE BUILD RECYCLE mode and the chilled water pump relay will remain energized to keep the chilled water ¯owing. If the entering CHILLED WATER/ BRINE TEMPERATURE increases above the ICE BUILD SET POINT plus the RECYCLE RESTART DELTA T value, the compressor will restart and control the CHILLED WATER/ BRINE TEMPERATURE to the ICE BUILD SET POINT.

TEMPERATURE CONTROL DURING ICE BUILD ÐDuring ice build, the capacity control algorithm uses the WATER/BRINE CONTROL POINT minus 5 F (2.7 C) to con- trol the LEAVING CHILLED WATER temperature. The ECW OPTION and any temperature reset option are ignored dur- ing ice build. The 20 mA DEMAND LIMIT OPTION is also ignored during ice build.

TERMINATION OF ICE BUILD Ð Ice build termination occurs under the following conditions:

1.Ice Build Time Schedule Ð When the Ice Build Time Schedule transitions to UNOCCUPIED, ice build opera- tion shall terminate.

2.ECW TEMPERATURE Ð Termination of compressor operation, based on temperature, shall occur if the ICE BUILD TERMINATION is set to the ice build termination temperature option (0) and the ENTERING CHILLED WATER TEMPERATURE is less than the ICE BUILD SET POINT. If the ICE BUILD RECYCLE

OPTION is set to ENABLE , a recycle shutdown occurs

and recycle start-up shall be based on LEAVING CHILLED WATER temperature being greater than the WATER/ BRINE CONTROL POINT plus RECYCLE RESTART DELTA T.

3.Remote Contacts/Ice Level Input Ð Termination of compressor operation occurs when ICE BUILD TERMI- NATION is set to the contacts only option (1) and the remote contacts are open. In this case, the contacts are provided for ice level termination control. The remote con- tacts can still be opened and closed to start and stop the chiller when the Ice Build Time Schedule is UNOCCU- PIED. The contacts are used to stop the ICE BUILD mode when the Ice Build Time Schedule is OCCUPIED.

4.ECW TEMPERATURE and Remote Contacts Ð Termi- nation of compressor operation shall occur when ICE BUILD TERMINATION is set to both the temperature and contacts (2) option and the previously described condi- tions for ENTERING CHILLED WATER temperature and remote contacts have occurred.

NOTE: Overriding the CHILLER START/STOP, WATER/ BRINE CONTROL POINT, and ACTIVE DEMAND LIMIT variables by CCN devices (with a priority less than 4) during the ice build period is not possible. However, over- riding can be accomplished with CCN during two chiller lead/ lag.

RETURN TO NON-ICE BUILD OPERATIONS Ð Upon termination of ice build, the chiller shall return to normal temperature control and start/stop schedule operation. If the CHILLER START/STOP or WATER/BRINE CONTROL POINT has been forced (with a priority less than 4), prior to entering ice build operation, then chiller START/STOP and WATER/BRINE CONTROL POINT forces will be removed.

Attach to Network Device Control Ð On the Serv- ice menu, one of the selections is ATTACH TO NETWORK DEVICE. This table serves the following purposes:

·to upload new parameters when switching the controller to HFC-134a refrigerant.

·to upload the Occupancy Schedule Number (if changed) for OCCPC03S software (version 09 and later), as de®ned in the Service01 table

·to attach the LID to any CCN device, if the chiller has been connected to a CCN Network. This may include other PIC controlled chillers.

·to change to a new PSIO or LID module or upgrade software.

Figure 22 illustrates the ATTACH TO NETWORK DEVICE table. The Local description is always the PSIO module address of the chiller the LID is mounted on. When- ever the controller identi®cation of the PSIO is changed, this change is re¯ected on the bus and address for the LOCAL DEVICE of the ATTACH TO DEVICE screen automat- ically. See Fig. 17.

Whenever the ATTACH TO NETWORK DEVICE table is entered, no information can be read from the LID on any device until you attach one of the devices listed on the display. The LID erases information about the module to which it was attached to make room for information on another de- vice. Therefore, a CCN module must be attached when this screen is entered. To attach a device, highlight it using the

SELECT softkey and then press the ATTACH softkey. The

message, ``UPLOADING TABLES, PLEASE WAIT'' dis- plays. The LID then uploads the highlighted device or module. If the module address cannot be found, the mes- sage, ``COMMUNICATION FAILURE'' appears. The LID then reverts to the ATTACH TO DEVICE screen. Try another device or check the address of the device that would not attach. The upload process time for each CCN module is different. In general, the uploading process takes 3 to 5 minutes. Before leaving the ATTACH TO NET- WORK DEVICE screen, select the LOCAL device. Other- wise, the LID will be unable to display information on the local chiller.

CHANGING REFRIGERANT TYPES Ð To select refrig- erant type, go to the Control Test table. Whenever the refrigerant type is changed, the ATTACH TO NETWORK DEVICE table must be used. After changing the refrigerant type in the Control Test table, move to the ATTACH TO NET- WORK DEVICE table. Make sure the highlight bar is

located on the LOCAL selection. Press the ATTACH soft-

key. The information in the PSIO module will now be up- loaded. The default screen will appear. The new refrigerant type change for the controller is complete.

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Contents Safety Considerations Start-Up, Operation, and Maintenance InstructionsContents Contents Abbreviations and Explanations IntroductionRefrigeration Cycle Chiller FamiliarizationMOTOR/OIL Refrigeration Cooling Cycle 19XL Rear View Cooler In/Out Temperature Sensors Take-Apart Rabbet Fit ConnectorCondenser In/Out Temperature Sensors Cooler Pressure Schrader FittingRefrigerant Motor Cooling and Oil Cooling Cycles Lubrication CycleLubrication System Unit-Mounted Solid-State Starter Optional Starting EquipmentControls DenitionsMajor PIC Components Panel Locations PIC Component PanelPressure Transducer, Typical 19XL Controls and Sensor LocationsControl and OIL Heater Voltage Selector S1 Power Panel with OptionsGeneral LID Operation and Menus FigSelect Override Operations − Example of Point Status Screen Status01Example of Time Schedule Operation Screen 19XL Menu Structure 19XL Service Menu Structure 19XL Service Menu Structure Example of Set Point Screen SetpointLID Screens Description Range Units Reference Point Name Alarm HistoryExample 1 Ð STATUS01 Display Screen Menu Status SelectExample 3 Ð STATUS03 Display Screen Example 2 Ð STATUS02 Display ScreenExample 4 Ð Setpoint Display Screen MenuExample 6 Ð LEAD/LAG Configuration Display Screen Example 5 Ð Configuration Config Display ScreenECW Control Option ICE Build TerminationExample 7 Ð SERVICE1 Display Screen Spare Alert Enable Example 8 Ð SERVICE2 Display ScreenExample 9 Ð SERVICE3 Display Screen Menu ServiceExample 11 Ð Maintenance MAINT02 Display Screen Example 10 Ð Maintenance MAINT01 Display ScreenDischarge Temperature Bearing TemperatureExample 13 Ð Maintenance MAINT04 Display Screen Example 12 Ð Maintenance MAINT03 Display ScreenDescription RANGE/STATUS Units Reference Point Name PIC System Functions Page Protective Safety Limits and Control Settings Capacity Overrides Page Page ECW Lead/Lag ControlHgbp Hot Gas BypassPage Cent Capacity Ice Build ControlPage To LOG on Example of Attach to Network Device ScreenSequence Fig START-UP/SHUTDOWN/RECYCLERecycle Restart Delta T Before Initial START-UP Using the Optional Storage Tank and PumpoutJob Data Required Equipment Required19XL Leak Test Procedures Page Ð HCFC-22 Pressure Ð Temperature C Ð HCFC-22 Pressure Ð Temperature FÐ HFC-134a Pressure Ð Temperature C Ð HFC-134a Pressure Ð Temperature FTemperature Pressure Page Check Optional Pumpout Compressor Water Pip Inspect WiringMECHANICAL-TYPE Starters Check StarterBENSHAW, INC. SOLID-STATE Starter Benshaw, Inc. Solid-State Starter Power StackSet Up Chiller Control Conguration Power Up the Controls and Check the Oil HeaterLoad Surge Prevention Occurs TOO Soon Occurs TOO Late Volt Motor Code Amps Correction Factors For 19XL Motors19XL Chiller Equalization Without PUMP- OUT Unit Charge Refrigerant into ChillerControl Test Menu Functions Tests to be Devices Tested Performed19XL Total Refrigerant Charge Refrigerant ChargesCooler SizeDry Run to Test Start-Up Sequence Initial START-UPCheck Rotation Calibrate Motor Current Check Oil Pressure and Compressor StopOperating Instructions Operator DutiesTo Stop the Chiller Plant Operating the Optional Pumpout Compressor Pumpout and Refrigerant Transfer ProceduresTransfer Refrigerant from Storage Tank to Chiller TstatTransfer the Refrigerant from Chiller to Storage Tank Chillers with Isolation ValvesTest After Service, Repair, or Major Leak Ð If General MaintenanceReturn Refrigerant to Normal Operating Conditions Guide Vane Actuator Linkage Weekly MaintenanceCheck Safety and Operating Controls Monthly Scheduled MaintenanceTo Change the OIL Inspect the Heat Exchanger Tubes Compressor Bearing and Gear MaintenOptional Pumpout System Controls Troubleshooting Guide MAINT02 MAINT01MAINT03 MAINT04Timing OUT or Timed OUT Shutdown with ON/OFF/RESET-OFFNormal or AUTO.-RESTART Recycle ShutdownAutorestart in Progress LOW Chilled Water Compressor Jumpstart and Refrigerant Protection Normal RUN with RESET, TEMPERATURE, or DemandOUT-OF-RANGE Sensor Failures Normal RUN Overrides Active AlertsLimited Protective Limit Chiller Protect Limit FaultsSpare Sensor Alert Messages Chiller AlertsDESCRIPTION/MALFUNCTION Probable CAUSE/REMEDY Other PROBLEMS/MALFUNCTIONSTemperature Voltage Resistance Drop Ð Thermistor Temperature F vs Resistance/Voltage DropÐ Thermistor Temperature C vs Resistance/Voltage Drop Module Address Control ModulesInput Options Module Processor Module Psio Fig Starter Management Module SMM FigOptions Module Switch Options Setting Module InstallationTypical Benshaw, Inc. Solid-State Starter internal View Page Page Problem Probable Causes Area of Correction Benshaw, Inc. Solid-State Starter Troubleshooting GuideRV1 SCRAdditional Data for Marine Waterboxes Heat Exchanger DataCooler CondenserCoolers Waterbox Cover WeightsCondensers 1034 kPaCompressor Weights Compressor/Motor WeightsOptional Pumpout System Electrical Data Compressor Fits and Clearances Description Torque Compressor Assembly TorquesFt-lb ``ZCOM CLRComm EXTPage CLR Page Chiller Power Panel, Starter Assembly Motor Wiring Schematic Chiller Power Panel, Starter Assembly Motor Wiring Schematic POT PMRGFR 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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