Carrier 17EX LID Operation and Menus Fig, PROCESSOR/SENSOR INPUT/OUTPUT Module Psio, General

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PROCESSOR/SENSOR INPUT/OUTPUT MODULE (PSIO)

ÐThis module contains all the operating software needed to control the chiller. The 17EX uses 5 pressure transducers and 8 thermistors to sense pressures and temperatures. These inputs are connected to the PSIO module. The PSIO also provides outputs to the guide vane actuator, compressor and gear oil pumps, oil heater, hot gas bypass (optional), and alarm contact. The PSIO communicates with the LID, the SMM, and the optional 8-input modules for user interface and starter management.

STARTER MANAGEMENT MODULE (SMM) Ð This mod- ule is located within the starter cabinet. This module ini- tiates PSIO commands for starter functions such as start/ stop of the compressor; start/stop of the condenser and chilled water pumps; start/stop of the tower fan, spare alarm con- tacts, and the shunt trip. The SMM monitors starter inputs such as ¯ow switches, line voltage, remote start contact, spare safety, condenser high pressure, oil pump interlock, motor current signal, starter 1M and run contacts, and the kW trans- ducer input (optional). The SMM contains logic capable of safely shutting down the chiller if communication with the PSIO is lost.

LOCAL INTERFACE DEVICE (LID) Ð The LID is mounted to the control center and allows the operator to interface with the PSIO or other CCN devices. It is the input center for all local chiller set points, schedules, set-up functions, and op- tions. The LID has a STOP button, an alarm light, 4 buttons for logic inputs, and a display. The function of the 4 buttons or ``softkeys'' are menu driven and are shown on the display directly above the key.

SIX-PACK RELAY BOARD (6-Pack Relay Board) Ð This device is a cluster of 6 pilot relays located in the control center. It is energized by the PSIO for the compressor oil pump, oil heater, alarm, optional hot gas bypass relay, aux- iliary oil pump.

EIGHT-INPUT (8-Input) MODULES Ð One optional mod- ule is factory installed in the control center panel when or- dered. There can be up to 2 of these modules per chiller with 8 spare inputs each. They are used whenever chilled water reset, demand reset, or reading a spare sensor is required. The sensors or 4 to 20 mA signals are ®eld-installed.

The spare temperature sensors must have the same temperature/resistance curve as the other temperature sen- sors on this unit. These sensors are rated 5,000 ohm at 75 F (25 C).

FOUR-IN/TWO-OUT (4-IN/2-OUT) MODULE Ð This mod- ule monitors and controls the external gear lubrication sys- tem. It energizes the gear oil pump and is located in the power panel.

OIL HEATER CONTACTOR (1C) Ð This contactor is lo- cated in the power panel and operates the heater at 115 v. It is controlled by the PIC to maintain oil temperature during chiller shutdown.

COMPRESSOR OIL PUMP CONTACTOR (2C) AND GEAR OIL PUMP CONTACTOR (5C) Ð These contactors are lo- cated in the power panel. They operate all 200 to 575-v oil pumps. The PIC energizes the contactor to turn on the oil pumps as necessary.

HOT GAS BYPASS CONTACTOR RELAY (3C) (Optional) Ð This relay, located in the power panel, con- trols the opening of the hot gas bypass valve. The PIC en- ergizes the relay during low load, high lift conditions.

OIL AUXILIARY RELAY (4C) Ð This relay opens the oil cooler solenoid valve and interlocks the oil pump with the compressor (special order).

CONTROL TRANSFORMERS (T1-T4) Ð These trans- formers are located in the power panel and convert

incoming control voltage to either 21 vac power for the PSIO module and options modules, or 24 vac power for 3 power panel contactor relays and a control solenoid valve.

CONTROL AND OIL HEATER VOLTAGE SELECTOR (S1) Ð It is necessary to use 115 v incoming control power in the power panel. The switch must be set to the 115-v position.

OIL DIFFERENTIAL PRESSURE/POWER SUPPLY MODULE Ð This module, which is located in the control center, provides 5 vdc power for the transducers and LID backlight. This module outputs the difference between two pressure transducer input signals. The module subtracts oil supply pressure from transmission sump pressure and out- puts the difference as an oil differential pressure signal to the PSIO. The PSIO converts this signal to differential oil pres- sure. To calibrate this reading, refer to the Troubleshooting, Checking Pressure Transducers section on page 84.

LID Operation and Menus (Fig. 11-17)

GENERAL

·The LID display automatically reverts to the default screen (Fig. 11) after 15 minutes if no softkey activity takes place and if the chiller is not in PUMPDOWN mode

·When not displaying the default screen, the upper right- hand corner of the LID displays the name of the screen that you have entered (Fig. 12).

·The LID may be con®gured in English or SI units, through the LID con®guration screen.

·Local Operation Ð Pressing the LOCAL softkey places

the PIC in LOCAL operation mode, and the control ac- cepts modi®cation to programming from the LID only. The PIC uses the Local Time Schedule to determine chiller start and stop times.

·CCN Operation Ð Pressing the CCN softkey places the

PIC in the CCN operation mode, and the control accepts modi®cations from any CCN interface or module (with the proper authority), as well as the LID. The PIC uses the CCN time schedule to determine start and stop times.

Fig. 11 Ð LID Default Screen

ALARMS AND ALERTS Ð An alarm (*) or alert (!) status is indicated on the default screen and the status tables. An alarm (*) shuts down the compressor. An alert (!) noti®es the operator that an unusual condition has occurred. The chiller continues to operate when an alert is shown.

Alarms are indicated when the control center alarm light

(!)¯ashes. The primary alarm message is viewed on the de- fault screen and an additional, secondary, message and troubleshooting information are sent to the ALARM HIS- TORY table.

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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 Abbreviations Introduction17EX Chiller Familiarization 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 PIC LIDPsio GRD Equip GND ÐTewac PROCESSOR/SENSOR INPUT/OUTPUT Module Psio LID Operation and Menus FigGeneral 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 SelectExample 3 Ð STATUS03 Display Screen Example 2 Ð STATUS02 Display ScreenMenu Status Example 5 Ð Setpoint Display Screen Example 4 Ð STATUS04 Display ScreenMenu ECW Control Option Example 6 Ð Configuration Config Display ScreenICE Build Termination 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 TemperatureExample 14 Ð Maintenance MAINT04 Display Screen Example 13 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 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 Check Optional Pumpout Compressor Water Pip Inspect Wiring900 500 901 7000 1000 7001-14500 2500 External Gear Pre-Start Checks Recommended Motor Fastener Tightening TorquesExternal Gear Lubrication System Mechanical Starters Check StarterSOLID-STATE Starters Input the Design Set Points Ð To modify the set Set Up Chiller Control CongurationInput the Local Occupied Schedule OCCPC01S Surge Limiting or Change the LID Configuration if NecessaryT1/P1 Full Load Points T2/P2 Increase P1 by Decrease P1 by Load Surge Prevention Occurs TOO Soon Occurs TOO Late50% Charge Refrigerant into Chiller Initial START-UPControl Test Menu Functions Tests to be Devices Tested PerformedCheck Motor Rotation Dry Run to Test Start-Up SequenceInitial Motor START-UP 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 Filters17EX Chiller Oil Specications Compressor OILPumpout 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 ModuleStarter Management Module SMM Fig Processor/Sensor Input/Output Module Psio FigGRD 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 101Ð Total Motor Weight, SI kg Ð Total Motor Weight, English lb102 Marine Waterbox Cover Weights NIH Waterbox Cover WeightsApproximate Refrigerant HCFC-134a Charge 103Relief Valve Locations and Data Auxiliary Systems, Electrical Data104 Compressor Fits and Clearances 105Clearance Type Description 106Measure 107 Tabulation Ð Impeller Clearances Open-Drive Compressors17FX 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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