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CHANGE CVC CONFIGURATION IF NECESSARY — From the SERVICE table, access the CVC CONFIGU- RATION screen. From there, view or modify the CVC CCN address, change to English or SI units, and change the pass- word. If there is more than one chiller at the jobsite, change the CVC 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. TO CHANGE THE PASSWORD — The password may be changed from the CVC CONFIGURATION screen. 1. Press the MENU and SERVICE softkeys. Enter the current password and highlight CVC CONFIGURA- TION. Press the SELECT softkey. Only the last 5 entries on the CVC CONFIG screen can be changed: BUS #, ADDRESS #, BAUD RATE, US IMP/METRIC, and PASSWORD. 2. Use the ENTER softkey to scroll to PASSWORD. The first digit of the password is highlighted on the screen. 3. To change the digit, press the INCREASE or DECREASE softkey. When the desired digit is seen, press the ENTER softkey. 4. The next digit is highlighted. Change it, and the third and fourth digits in the same way the first was changed. 5. After the last digit is changed, the CVC goes to the BUS parameter. Press the EXIT softkey to leave that screen and return to the SERVICE menu. TO CHANGE THE CVC DISPLAY FROM ENGLISH TO METRIC UNITS — By default, the CVC displays informa- tion in English units. To change to metric units, access the CVC CONFIGURATION screen: 1. Press the MENU and SERVICE softkeys. Enter the password and highlight CVC CONFIGURATION. Press the SELECT softkey. 2. Use the ENTER softkey to scroll to US IMP/METRIC. 3. Press the softkey that corresponds to the units desired for display on the CVC (e.g., US or METRIC). MODIFY CONTROLLER IDENTIFICATION IF NECES- SARY — The CVC module address can be changed from the CVC CONFIGURATION screen. Change this address for each chiller if there is more than one chiller at the jobsite. Write the new address on the CVC module for future reference. INPUT EQUIPMENT SERVICE PARAMETERS IF NEC- Configure SERVICE Tables — Access the SERVICE tables, shown in Table 2, to modify or view the following job site parameters: Be sure to remember the password. Retain a copy for future reference. Without the password, access to the SERVICE menu will not be possible unless the CVC_PSWD menu on the STATUS screen is accessed by a Carrier representative. ESSARY — The service tables. EQUIPMENT SERVICE table has six PARAMETER Starter Type Motor Rated Line Voltage Volt Transformer Ratio Motor Rated Load Amps Motor Locked Rotor Trip Starter LRA Rating Motor Current CT Ratio Ground Fault Current Transformers Ground Fault CT Ratio Single Cycle Dropout Line Frequency Line Frequency Faulting Surge Limiting or Hot Gas Bypass Option Minimum Load Points (T1, P1) Full (Maximum) Load Points (T2, P2) Chilled Medium Evaporator Refrigerant Trippoint Evaporator Flow Delta P Cutout Condenser Flow Delta P Cutout Diffuser Option Diffuser Full Span mA Rating Motor Rated Kilowatts TABLE ISM_CONF — Select 0 for full voltage, 1 for reduced voltage, or 2 for solid state/variable frequency drive. ISM_CONF — Motor rated voltage from chiller information nameplate. ISM_CONF — Enter ratio (reduced to a ratio to 1) of power transformer wired to terminal J3 of ISM. If no transformer is used enter 1. ISM_CONF — Per chiller identification nameplate data. ISM_CONF — Per chiller identification nameplate data. Enter locked rotor delta amps (LR AMPS D-). ISM_CONF — Enter value from name- plate in starter cabinet. ISM_CONF — Enter ratio (reduced to a ratio to 1) of current transformers wired to terminal J4 of ISM. For Benshaw Inc. RediStart MICROTM Starters set to 100. ISM_CONF — Enter 0 if no ground fault CTs are wired to terminal J5 of ISM. Enter 1 if ground fault CTs are used. ISM_CONF — Enter ratio (reduced to a ratio to 1) of ground fault CT. ISM_CONF — ENABLE if motor protection required from drop in line voltage within one cycle. ISM_CONF — Enter YES for 60 Hz or NO for 50 Hz. ISM_CONF — ENABLE if motor protection required for drop in line frequency. OPTIONS — Enter 1 if HGBP is installed. OPTIONS — Per Chiller Requisition (DT1, DP2) if available or per job data — See modify load points section. OPTIONS — Per Chiller Requisition (DT2, DP2) if available or per job data — See modify load points section. For VFD units refer to table located in con- trol panel. SETUP1 — Enter water or brine. SETUP1 — Usually 3° F (1.7° C) below design refrigerant temperature. SETUP1 — Per Chiller Requisition if available or enter 50% of design pres- sure drop to 0.5 psi (3.4 kPa).* SETUP1 — Per Chiller Requisition if available or enter 50% of design pres- sure drop to 0.5 psi (3.4 kPa).* SETUP2 — ENABLE for 5 size com- pressor only. See model number nomenclature. SETUP2 — Enter diffuser actuator full span mA rating for 5 size compressor only. Value is located on label on side of diffuser actuator motor. RAMP_DEM — Enter value from chiller requisition form (product data submittal) if kilowatt ramp demand is enabled. 56 *With variable flow systems this point may be configured to the lower end of the range. NOTE: Other parameters on these screens are normally left at the default settings; however, they may be changed by the operator as required. The time and persistence settings on the ISM_CONF table can be adjusted to increase or decrease the sensitivity to a fault condition. Increasing time or persistence decreases sensitivity. Decreasing time or persistence increases sensitivity to the fault condition.PDF Image | 19XR,XRV Hermetic Centrifugal Liquid Chillers 50/60 Hz With PIC II Controls and HFC-134a
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