7
4.15.1. System Overview .............................................................................................61
4.15.2. Condenser Status ............................................................................................62
4.15.3. Evaporator Status ............................................................................................62
4.15.4. Compressor Status ..........................................................................................63
4.15.5. Motor Status ....................................................................................................63
4.15.6. Envelope Control Status...................................................................................64
4.15.7. VFD Status ......................................................................................................64
4.15.8. Startup Sequence ............................................................................................65
4.15.9. Purge System Status .......................................................................................65
4.15.10. Startup Sequence .........................................................................................66
5. 19 SERIES CARRIER® SMARTVU
TM
CONTROL OPERATION ....................................67
5.1. Start/Stop Control .................................................................................................67
5.2. Chiller Run Status .................................................................................................67
5.3. Chiller Start-up Sequence.....................................................................................68
5.3.1. Prestart Check .................................................................................................68
5.3.2. Startup.............................................................................................................69
5.4. Chiller Shutdown Sequence .................................................................................70
5.5. Oil Lubrication Control .........................................................................................71
5.6. Refrigerant Lubrication Control ...........................................................................72
5.7. Control Point .........................................................................................................72
5.7.1. Set Point..........................................................................................................72
5.7.2. Control Point ....................................................................................................73
5.7.3. Temperature Reset ..........................................................................................73
5.8. Capacity Control ...................................................................................................74
5.9. Ramp Loading .......................................................................................................75
5.10. Surge Correction Control .....................................................................................75
5.10.1. Surge Prevention Control .................................................................................76
5.10.2. Surge Protection ..............................................................................................76
5.11. Envelope Control Valve (EC) Control ...................................................................77
5.12. Economizer Damper Valve Control ......................................................................77
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