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Table 4 — Capacity Overrides FIRST STAGE SET POINT SECOND STAGE SET POINT View/Modify on CVC Screen Default Value Configurable Range Value SETUP1 125 psig (862 kPa) 90 to 165 psig (620 to 1138 kPa) >Override Set Point +2.4 psid (16.5 kPad) SETUP1 >200 F (93.3 C) 150 to 200 F (66 to 93 C) >Override Set Point +10° F (6° C) SETUP1 3° F (1.6° C) 2° to 5° F (1° to 3° C) ≤Trippoint + Override ∆T –1° F (0.56° C) OPTIONS Min: T1 — 1.5° F (0.8° C) P1 — 50 psid (345 kPad) Max: T2 — 10° F (5.6° C) P2 — 85 psid (586 kPad) 0.5° to 20° F (0.3° to 8.3° C) 30 to 170 psid (207 to 1172 kPad) 0.5° to 20° F (0.3° to 8.3° C) 50 to 170 psid (348 to 1172 kPad) None CAPACITY Automatic 0 to 100% None MAINSTAT 100% 40 to 100% ≥5% of Set Point OVERRIDE Calculated Minimum Superheat for Conditions None 2° F (1.1° C) Below Calculated Minimum Superheat OVERRIDE CAPACITY CONTROL HIGH CONDENSER PRESSURE HIGH MOTOR TEMPERATURE LOW REFRIGERANT TEMPERATURE (Refrigerant Override Delta Temperature) HIGH COMPRESSOR LIFT (Surge Prevention) MANUAL GUIDE VANE TARGET MOTOR LOAD — ACTIVE DEMAND LIMIT LOW DISCHARGE SUPERHEAT Spare Safety Alarm Contacts — One set of alarm contacts is provided in the starter. The contact ratings are pro- vided in the certified drawings. The contacts are located on ter- minal strip JP, terminals 15 and 16. Refrigerant Leak Detector — An input is available on the CCM module [terminal J5-5 (–) and J5-6 (+)] for a refrigerant leak detector. Enabling REFRIGERANT LEAK OPTION (OPTIONS screen) will allow the PIC II controls to go into an alarm state at a user configured level (REFRIGER- ANT LEAK ALARM mA). The input is configured for 4 to 20 mA by setting the DIP switch 1 on SW2 at the ON position, or configured for 1 to 5 vdc by setting switch 1 at the OFF posi- tion. The output of the refrigerant leak detector is displayed as REFRIGERANT LEAK SENSOR on the MAINSTAT screen. For a 1 to 5 vdc input, 1 vdc input represents 4 mA displayed and 5 vdc input represents 20 mA displayed. Kilowatt Output — An output is available on the CCM module [Terminal J8-1 (+) and J8-2 (–)] to represent the power consumption of the chiller. The 4 to 20 mA signal generated by the CCM module can be wired to the building automation or energy management system to monitor the chiller’s energy consumption. A 4 mA signal represents the chiller in an off state and a 20 mA signal represents the chiller operating at its rated peak kilowatt consumption. The rated peak kilowatt con- sumption is configured by the user in the RAM_DEM display screen by the setting the MOTOR RATED KILOWATTS from the job data sheet. Remote Reset of Alarms — A standard feature of the PIC II controls is the ability to reset a chiller in a shutdown alarm state from a remote location. If the condition which caused the alarm has cleared the chiller can be placed back into a normal CCN operating mode when the REMOTE RESET OPTION (CVC_PSWD menu) is set to ENABLE. A variety of Carrier Comfort Network software systems including Comfort- VIEWTM or Network Service ToolTM can access the PIC II controls and reset the displayed alarm. Third party software OVERRIDE TERMINATION ValuePDF Image | 19XR,XRV Hermetic Centrifugal Liquid Chillers 50/60 Hz With PIC II Controls and HFC-134a
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