![background image](http://html.mh-extra.com/html/carrier/pc211/pc211_start-up-operation-and-maintenance-instructions-manual_2562217108.webp)
Temperature Control During Ice Build
During ice build, the capacity control algorithm uses the WATER/BRINE CONTROL POINT
minus 5 F (2.7 C) to control the LEAVING CHILLED WATER temperature. The ECW OPTION
and any temperature reset option are ignored during ice build. The 20 mA DEMAND LIMIT
OPTION is also ignored during ice build.
Termination Of Ice Build
Ice build termination occurs under the following conditions:
1. Ice Build Time Schedule — When the Ice Build Time Schedule transitions to
UNOCCUPIED, ice build operation shall terminate.
2. ECW TEMPERATURE —Termination of compressor operation, based on temperature,
shall occur if the ICE BUILD TERMINATION is set to the ICE BUILD TERMINATION TEMP
option and the ENTERING CHILLED WATER temperature is less than the ICE BUILD
SETPOINT. If the ICE BUILD RECYCLE OPTION is set to ENABLE, a recycle shutdown
occurs and recycle start-up shall be based on LEAVING CHILLED WATER temperature
being greater than the WATER/BRINE CONTROL POINT plus RECYCLE DELTA T.
3. Remote Contacts/Ice Level Input —Termination of compressor operation occurs when ICE
BUILD TERMINATION is set to CONTACTS ONLY OPTION and the remote contacts are
open. In this case, the contacts are provided for ice level termination control. The remote
contacts can still be opened and closed to start and stop the chiller when the Ice Build Time
Содержание PC211
Страница 317: ...Figure 1 19XL Identification ...
Страница 318: ...Figure 2A Front View Typical 19XL Components Design I See next page for Rear View ...
Страница 319: ...Figure 2A Rear View Typical 19XL Components Design I ...
Страница 320: ...Figure 2B Front View Typical 19XL Components Design II See next page for Rear View ...
Страница 321: ...Figure 2B Rear View Typical 19XL Components Design II ...
Страница 322: ...Figure 3 Refrigerant Motor Cooling and Oil Cooling Cycles ...
Страница 323: ...Figure 4 Lubrication System ...
Страница 324: ...Figure 5 Cutler Hammer Solid State Starter Internal View ...
Страница 325: ...Figure 6 Benshaw Inc Solid State Starter Internal View ...
Страница 326: ...Figure 7 Typical Starter Front View Solid State Starter Shown ...
Страница 327: ...Figure 8 19XL Controls and Sensor Locations ...
Страница 328: ...Figure 9 Control Sensors Temperature ...
Страница 329: ...Figure 10 Control Sensors Pressure Transducer Typical ...
Страница 330: ...Figure 11 Control Panel Front View with Options Module ...
Страница 331: ...Figure 12 Power Panel with Options ...
Страница 332: ...Figure 13 LID Default Screen ...
Страница 333: ...Figure 14 LID Service Screen ...
Страница 334: ...Figure 15 Example of Point Status Screen Status01 ...
Страница 335: ...Figure 16 19XL Menu Structure ...
Страница 336: ...Figure 17 19XL Service Menu Structure ...
Страница 337: ...Figure 18 Example of Time Schedule Operation Screen ...
Страница 338: ...Figure 19 Example of Set Point Screen ...
Страница 339: ...Figure 20 19XL Hot Gas Bypass Surge Prevention ...
Страница 340: ...Figure 21 19XL with Default Metric Settings ...
Страница 341: ...Figure 22 Example of Attach to Network Device Screen ...
Страница 342: ...Figure 23 Example of Holiday Period Screen ...
Страница 344: ...Figure 25 Typical Wet Bulb Type Vacuum Indicator ...
Страница 345: ...Figure 26 19XL Leak Test Procedures ...
Страница 346: ...Figure 27 Typical Optional Pumpout System Piping Schematic with Storage Tank ...
Страница 347: ...Figure 28 Typical Optional Pumpout System Piping Schematic without Storage Tank ...
Страница 348: ...Figure 29 Dehydration Cold Trap ...
Страница 349: ...Figure 30 Benshaw Inc Solid State Starter Power Stack ...
Страница 350: ...Figure 31 Ramp Up and Starting Torque Potentiometers ...
Страница 351: ...Figure 32 Typical Potentiometer Adjustment ...
Страница 352: ...Figure 33 Typical Cutler Hammer Solid State Starter ...
Страница 353: ...Figure 34 Correct Motor Rotation ...
Страница 356: ...Figure 37 Optional Pumpout System ...
Страница 357: ...Figure 38 Guide Vane Actuator Linkage ...
Страница 358: ...Figure 39 19XL Float Valve Designs ...
Страница 359: ...Figure 40 Optional Pumpout System Controls ...
Страница 360: ...Figure 41 PSIO Module Address Selector Switch Locations and LED Locations ...
Страница 361: ...Figure 42 LID Module Rear View and LED Locations ...
Страница 362: ...Figure 43 Processor PSIO Module ...
Страница 363: ...Figure 44 Starter Management Module SSM ...
Страница 364: ...Switch Setting Option Module 1 Option Module 2 S1 S2 6 4 7 2 Figure 45 Options Module ...
Страница 365: ...Figure 46 Typical Benshaw Inc Solid State Starter Internal View ...
Страница 366: ...Figure 47 Resistance Check ...
Страница 367: ...Figure 48 SCR and Power Poles ...
Страница 368: ...Figure 49 Typical Cutler Hammer Solid State Starter Internal View ...
Страница 369: ...Figure 50 Cutler Hammer Terminal Functions ...
Страница 370: ...Figure 51 Solid State Starter General Operation Troubleshooting Guide Typical ...
Страница 371: ...Figure 52 Solid State Starter Starter Fault Motor Will Not Start Troubleshooting Guide Typical ...
Страница 373: ...Figure 54 Compressor Fits and Clearances Continued ...
Страница 374: ...Figure 55 Compressor Fits and Clearances Continued ...