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19XR,XRV Hermetic Centrifugal Liquid Chillers 50/60 Hz With PIC II Controls and HFC-134a

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19XR,XRV Hermetic Centrifugal Liquid Chillers 50/60 Hz With PIC II Controls and HFC-134a ( 19xrxrv-hermetic-centrifugal-liquid-chillers-50-60-hz-with-p )

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7. Press ENTER to register the values and to move hori- zontally (left to right) within a period. 8. Press EXIT to leave the period or override. 9. Either return to Step 4 to select another period or over- ride, or press EXIT again to leave the current time schedule screen and save the changes. 10. The Holiday Designation (HOLIDEF table) may be found in the Service Operation section, page 45. The month, day, and duration for the holiday must be assigned. The Broadcast function in the BRODEF table also must be enabled for holiday periods to function. TO VIEW AND CHANGE SET POINTS (Fig. 20) 1. To view the SETPOINT table, from the MENU screen press SETPOINT . 2. There are 5 set points on this screen: BASE DEMAND LIMIT, LCW SETPOINT (leaving chilled water set point), ECW SETPOINT (entering chilled water set point), ICE BUILD SETPOINT, and TOWER FAN HIGH SETPOINT. Only one of the chilled water set points can be active at one time. The set point that is ac- tive is determined from the SERVICE menu. See the Ser- vice Operation section, page 45. The ice build (ICE BUILD) function is also activated and configured from the SERVICE menu. 3. Press NEXT or PREVIOUS to highlight the desired set point entry. 4. Press SELECT to modify the highlighted set point. 5. Press INCREASE or DECREASE to change the se- lected set point value. 6. Press ENTER to save the changes and return to the pre- vious screen. SERVICE OPERATION — To view the menu-driven pro- grams available for Service Operation, see Service Operation section, page 45. For examples of CVC display screens, see Table 2. 19XR_II SETPOINT Base Demand Limit Control Point LCW Setpoint ECW Setpoint ICE BUILD Setpoint Tower Fan High Setpoint SETPOINT SELECT 100% 50.0 F 60.0 F 40.0 F 85.0 F Fig. 20 — Example of Set Point Screen 21

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19XR,XRV Hermetic Centrifugal Liquid Chillers 50/60 Hz With PIC II Controls and HFC-134a

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