Carrier 17EX specifications

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If any of these requirements are not met, the PIC aborts the start and displays the applicable pre-start mode of failure on the LID default screen. A pre-start failure does not ad- vance the STARTS IN 12 HOURS counter (STATUS01 screen). Any failure after the 1CR relay has energized causes a safety shutdown, advances the STARTS IN 12 HOURS counter by one, and displays the applicable shutdown status on the LID display.

Shutdown Sequence Ð The chiller shuts down if any of the following occurs:

·the STOP button on the control panel is pressed for at least one second. The alarm light blinks once to con®rm the stop command.

·a recycle condition is present (see Chilled Water Recycle Mode section).

·the OCCUPIED ? parameter on the STATUS01 screen reads NO; that is, the chiller is not scheduled to run at the cur- rent time and date.

·the remote contact opens.

·the CHILLER START/STOP status is overridden to STOP from the CCN network or the LID.

When a stop signal occurs, the shutdown sequence ®rst stops the compressor by deactivating the start relay. A status message, SHUTDOWN IN PROGRESS, COMPRESSOR DEENERGIZED, displays. The guide vanes are then brought to the closed position. The oil pump relay and the chilled water/brine pump relay are shut down 60 seconds after the compressor stops. The condenser water pump shuts down when the condenser refrigerant temperature is less than the condenser pressure override minus 5 psi (34 kPa) or is less than or equal to the entering condenser water temperature plus 3° F (2° C). The stop-to-start timer now begins to count down. If the value of the start-to-start timer is still greater than the value of the start-to-stop timer, then the start-to- start time is displayed on the LID.

There are certain conditions during shutdown that can change this sequence:

·if the COMPRESSOR MOTOR LOAD (STATUS01 screen) is greater than 10% after shutdown or the starter contacts remain energized, the oil pump and chilled water pump remain energized and the alarm is displayed

·if the ENTERING CONDENSER WATER (STATUS01 screen) temperature is greater than 115 F (46 C) at shutdown, the condenser pump is deenergized after the 1CR compressor start relay

·if the chiller shuts down due to low refrigerant tempera- ture, the chilled water pump keeps running until the LEAV- ING CHILLED WATER temperature is greater than the WATER/BRINE CONTROL POINT plus 5° F (3° C).

Automatic Soft Stop Amps Threshold Ð The au- tomatic soft stop amps threshold is an operator con®gured value that closes the guide vanes of the compressor auto- matically when a non-recycle,non-alarm stop signal occurs before the compressor motor is deenergized.

If the STOP button on the control panel is pressed, the guide vanes close to a preset amperage percent or until the guide vane is less than 2% open. The compressor then shuts off.

If the chiller enters an alarm state or if the compressor enters a RECYCLE mode, the compressor is deenergized immediately.

To activate the automatic soft stop amps threshold, access the SERVICE1 screen. Set the SOFT STOP AMPS THRESH- OLD parameter value to the percent of amps at which the motor will shut down. The default setting is 100% amps (no soft stop).

When the automatic soft stop amps threshold is being ap- plied, a status message, SHUTDOWN IN PROGRESS, COM- PRESSOR UNLOADING, displays.

Chilled Water Recycle Mode Ð When the compres- sor is running under light load conditions, the chiller may cycle off and wait until the load increases to restart again. This cycling is normal and is known as recycle. A recycle shutdown is initiated when any of the following occurs:

·when the chiller is operating under the control of the leav- ing chilled water temperature (that is, when the ECW CON- TROL OPTION on the CONFIG screen is disabled), the difference between the LEAVING CHILLED WATER tem- perature and ENTERING CHILLED WATER temperature is less than the RECYCLE SHUTDOWN DELTA T (found in the SERVICE1 table) and the LEAVING CHILLED WA- TER TEMP is below the WATER/BRINE CONTROL POINT, and the WATER/BRINE CONTROL POINT has not in- creased in the last 5 minutes

·when the chiller is operating under the control of the en- tering chilled water temperature (that is, the ECW CON- TROL OPTION is enabled), the difference between the ENTERING CHILLED WATER temperature and the LEAV- ING CHILLED WATER temperature is less than the RECYCLE SHUTDOWN DELTA T (found in the SERV- ICE1 table) and the ENTERING CHILLED WATER tem- perature is below the WATER/BRINE CONTROL POINT, and the WATER/BRINE CONTROL POINT has not in- creased in the last 5 minutes

·when the LEAVING CHILLED WATER temperature is within 3° F (2° C) of the BRINE REFRIG TRIPPOINT. (See the SERVICE1 screen.)

When the chiller is in RECYCLE mode, the chilled water pump relay remains energized so that the chilled water tem- perature can be monitored for increasing load. The recycle control uses the RECYCLE RESTART DELTA T value to check when the compressor should be restarted. This is an operator-con®gured value that defaults to 5° F (3° C). The value can be viewed/modi®ed on the SERVICE1 screen. The compressor restarts when:

·the chiller is operating under leaving chilled water tem- perature control and the LEAVING CHILLED WATER temperature is greater than the WATER/BRINE CON- TROL POINT plus the RECYCLE RESTART DELTA T; or

·the chiller is operating under entering chilled water tem- perature control and the ENTERING CHILLED WATER temperature is greater than the WATER/BRINE CON- TROL POINT plus the RECYCLE RESTART DELTA T.

Once these conditions are met, the compressor initiates a start-up, with a normal start-up sequence.

An alert condition may be generated if 5 or more recycles occur in less than 4 hours. Because excessive recycling can reduce chiller life, compressor recycling caused by ex- tremely low loads should be reduced. To accomplish this, use the time schedule to shut the chiller down during periods of known low load operation or increase the chiller load by running the fan systems. If the hot gas bypass is installed, adjust the values to ensure that hot gas is energized during light load conditions. Increase the RECYCLE RESTART DELTA T value on the SERVICE1 screen to lengthen the time be- tween restarts.

The chiller should not be operated below design mini- mum load without a hot gas bypass installed on the chiller.

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Contents Start-Up, Operation, and Maintenance Instructions Safety ConsiderationsContents Piping Check Relief Devices Inspect Wiring OCCPC01S Input Service CongurationsCoupling Maintenance Motor Maintenance Inspect Water PipingContents 17EX Chiller Familiarization IntroductionAbbreviations Performance CertifiedTypical 17EX Chiller Components OIL Cooling Cycle Lubrication CycleStarters Refrigeration, Cycle17EX Compressor Lubrication Cycle Controls DenitionsTemperature Sensors See Fig Pressure Transducers Major PIC Components Panel LocationsPIC Component Panel Location Processor Sensor Input/Output Module Control Center17EX Controls and Sensor Locations Psio LIDPIC Tewac Equip GND ÐGRD General LID Operation and Menus FigPROCESSOR/SENSOR INPUT/OUTPUT Module Psio LID Service Screen YES or no , on or OFF , etc. to select the desired state Override OperationsDefault Screen 17EX LID Menu StructureService Table Alarm HistoryEquipment Configuration Control TestCCN Carrier Comfort NetworkHgbp Ð Hot Gas Bypass LIDSetpoint ChwrChws HgbpDescription Range Units Reference Point Name Alarm History LID Display DataExample 1 Ð STATUS01 Display Screen Menu Status SelectMenu Status Example 2 Ð STATUS02 Display ScreenExample 3 Ð STATUS03 Display Screen Menu Example 4 Ð STATUS04 Display ScreenExample 5 Ð Setpoint Display Screen ICE Build Termination Example 6 Ð Configuration Config Display ScreenECW Control Option Example 7 Ð LEAD/LAG Configuration Display Screen LAG =2, Standby =3Example 8 Ð SERVICE1 Display Screen Example 9 Ð SERVICE2 Display Screen Spare Alert EnableExample 10 Ð SERVICE3 Display Screen Menu ServiceExample 11 Ð Maintenance MAINT01 Display Screen Example 12 Ð Maintenance MAINT02 Display ScreenDischarge Temperature Bearing TemperatureDescription RANGE/STATUS Units Reference Point Name Example 13 Ð Maintenance MAINT03 Display ScreenExample 14 Ð Maintenance MAINT04 Display Screen PIC System Functions Page Protective Safety Limits and Control Settings Capacity Overrides Page Page ECW Cent Capacity ICE Build Setpoint Example of Attach to Network Device Screen To Access the Service Screens Example of Holiday Period ScreenSTART-UP/SHUTDOWN Recycle Sequence FigPage Before Initial START-UP Job Data RequiredEquipment Required MotorPage 17EX Leak Test Procedures Ð HFC-134a Pressure Ð Temperature F Ð HFC-134a Pressure Ð Temperature CTemperature F Temperature CDehydration Cold Trap 900 500 901 7000 1000 7001-14500 2500 Inspect WiringCheck Optional Pumpout Compressor Water Pip External Gear Pre-Start Checks Recommended Motor Fastener Tightening TorquesExternal Gear Lubrication System SOLID-STATE Starters Check StarterMechanical Starters Input the Local Occupied Schedule OCCPC01S Set Up Chiller Control CongurationInput the Design Set Points Ð To modify the set T1/P1 Full Load Points T2/P2 Change the LID Configuration if NecessarySurge Limiting or 50% Load Surge Prevention Occurs TOO Soon Occurs TOO LateIncrease P1 by Decrease P1 by Charge Refrigerant into Chiller Initial START-UPControl Test Menu Functions Tests to be Devices Tested PerformedInitial Motor START-UP Dry Run to Test Start-Up SequenceCheck Motor Rotation Page Flange Nut Tightening Torques Low Speed Couplings Only Calibrate Motor Current Demand Setting Check Oil Pressure and Compressor StopTo Prevent Accidental Start-Up Ð The PIC can be General RecommendationsOperating Instructions Operator DutiesStarting the Chiller Stopping the ChillerPumpout and Refrigerant Transfer Procedures Operating the Optional Pumpout CompressorPlant Chiller Serial No Chiller Model No Refrigerant Type Rear View RLA Valve ConditionGeneral Maintenance Return Chiller to Normal Operating ConditionsContact Seal Maintenance Refer to Ð Checking Guide Vane Linkage Ð Refer to FigContact Seal Page Chiller Alignment Checking Preliminary AlignmentMeasuring Angular Misalignment Elevation Alignment Formula Adjusting Angular Misalignment in Plan HOT Alignment CheckCorrecting Parallel Misalignment DowelingWeekly Maintenance Scheduled MaintenanceCheck Safety and Operating Controls Monthly Changing the Oil FiltersPumpout Compressor OIL17EX Chiller Oil Specications Typical Float Valve Arrangement Sleeve Bearings Page Motor Riggings Inspect the Heat Exchanger Tubes Troubleshooting Guide Controls for Optional Pumpout CompressorPage MAINT01 MAINT02MAINT03 MAINT041CR AUX OilpdOilt PICStarts Limit Exceeded Autorestart in ProgressFault OperationPotential FREEZE-UP Failure to StopRunning Ð Temp Control Running Ð Demand LimitedChiller Protect Limit Faults Sensor Fault Alert LOW OIL PressureAlert Autorestart PendingDESCRIPTION/MALFUNCTION Probable CAUSE/REMEDY External Gear Troubleshooting Guide ProblemPossible Cause Ð Item NO.s Possible Cause ActionÐ Thermistor Temperature F vs Resistance/Voltage Drop Temperature Voltage Resistance DropÐ Thermistor Temperature C vs Resistance/Voltage Drop Temperature Voltage Resistance DropModule Switch Control ModulesModule Address Input Options ModuleGRD Processor/Sensor Input/Output Module Psio FigStarter Management Module SMM Fig Installation of NEW Psio Module Switch Setting Options ModuleFour-In/Two-Out Module Fig Options ModulePhysical Data and Wiring Schematics 4-In/2-Out ModuleAdditional Cooler Weights Weight Vessel SIZE²Condenser Total Weight Condenser Charge 100Additional Condenser Weights Compressor Weight and Elbow WeightDrive Component Weights 101102 Ð Total Motor Weight, English lbÐ Total Motor Weight, SI kg Marine Waterbox Cover Weights NIH Waterbox Cover WeightsApproximate Refrigerant HCFC-134a Charge 103104 Auxiliary Systems, Electrical DataRelief Valve Locations and Data Compressor Fits and Clearances 105Measure 106Clearance Type Description 17FX Tabulation Ð Impeller Clearances Open-Drive Compressors107 108 109 TempPress Tewac110 111 112 113 General114 GND Ð GroundT1-T4 Terminal StripIndex Index Index Index Index Copyright 1997 Carrier Corporation

17EX specifications

The Carrier 17EX is recognized as an innovative air conditioning solution that combines efficiency with advanced technology. This model is designed to meet the increasing demands of residential and commercial cooling needs while maintaining environmental consciousness.

One of the standout features of the Carrier 17EX is its impressive Seasonal Energy Efficiency Ratio (SEER) rating. With a SEER rating that often exceeds 17, this unit ensures optimized energy consumption, significantly lowering operational costs for users. The incorporation of advanced compressor technology allows the system to adjust its cooling output based on the specific needs of the environment, thus providing both comfort and energy savings.

The Carrier 17EX utilizes a variable-speed inverter-driven compressor that enhances its performance and adaptability. This technology allows the air conditioning unit to operate at different speeds, intelligently adjusting to changing load conditions. As a result, the system runs more efficiently and quietly, providing a more consistent comfort level without the abrupt temperature swings associated with traditional units.

In addition to efficiency, the Carrier 17EX also prioritizes reliability and durability. The unit comes with a robust cabinet that protects the components from weather elements, ensuring longevity and consistent performance. The innovative design integrates a corrosion-resistant finish and robust insulation, which further enhances the unit's resilience in various environmental conditions.

For users concerned about indoor air quality, the Carrier 17EX includes advanced filtration systems designed to capture allergens and airborne particles. This feature is particularly beneficial for individuals with respiratory issues, ensuring that the air circulated within the space is clean and healthy.

Moreover, the Carrier 17EX is equipped with smart technology capabilities, allowing users to control their systems remotely through smartphones or other smart devices. This connectivity not only provides convenience but also empowers homeowners to optimize their energy use by adjusting settings on the fly, ensuring efficient operation even when they are away from home.

Overall, the Carrier 17EX stands out in the marketplace for its exceptional energy efficiency, advanced technology, and commitment to providing reliable and effective cooling solutions. Its combination of modern features makes it a preferred choice for those looking to enhance comfort while being mindful of energy consumption and environmental impact.
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