McQuay MicroTech II User Manual

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Checking Internet Explorer Settings..............................................................................................124
Appendix A: Hardwired Chiller Control ...........................................................................126
Setting up the CSM’s Additional Chiller Data for a Hardwired Chiller ............................................126
Chiller % RLA from a Hardwired Chiller......................................................................................127
Hardwired Chiller - Load Limiting Control...................................................................................128
Hardwired Chiller - Chilled Water Temperature Control ..............................................................128
Hardwired Chiller Unit Controller Settings.......................................................................................129
Hardwired Chiller Sequence of Operation.........................................................................................130
Unavailable and Available Hardwired Chillers..............................................................................130
Chiller Startup................................................................................................................................130
Chiller Shutdown...........................................................................................................................131
Hardwired Chiller Alarms..................................................................................................................131
Chiller Fault Alarms.......................................................................................................................131
Chiller Problem Alarms.................................................................................................................132
CSM Alarms Available for Hardwired Chillers.............................................................................132
Chiller Data........................................................................................................................................133
Hardwired Chiller - Communication Loss Control at the Chiller ......................................................133
Index....................................................................................................................................134
Figures
Figure 1. Key to Software Identification................................................................................................7
Figure 2. System Architecture...............................................................................................................9
Figure 3. Enter Network Password ......................................................................................................14
Figure 4. Niagara Web Administration................................................................................................15
Figure 5. CSM’s User Interface Main Screen (http://<IP Address>).................................................17
Figure 6. Example of a Configuration screen (Main > Configuration > System Control). ..................19
Figure 7. User Admin Screen (Main > Configuration > BAS Config > USER ADMIN-button) ........20
Figure 8. Device Addressing (Main > Configuration > Device Addressing).......................................22
Figure 9. Service Pin Location on the MicroTech II Chiller L
ONWORKS Communication Module....24
Figure 10. Chiller Sequence Order Table (Main > Configuration > Chiller Seq)................................34
Figure 11. Typical Primary-Only System ............................................................................................38
Figure 12. Typical Primary-Secondary System....................................................................................39
Figure 13. Chiller System with Evaporators Piped in the Series/Parallel Configuration .....................43
Figure 14. Screw Chiller Demand Limiting.........................................................................................46
Figure 15. External Signal Demand Limiting Function .......................................................................47
Figure 16. Soft Load Limit Function ...................................................................................................48
Figure 17. CSM Leaving Evaporator Water Temperature Setpoint Flow Chart..................................51
Figure 18. Typical System with Isolated Chillers................................................................................52
Figure 19. Return Water or Outdoor Air Reset (English)....................................................................53
Figure 20. Return Water or Outdoor Air Reset (SI).............................................................................54
Figure 21. External Reset (English).....................................................................................................55
Figure 22. External Reset (SI) .............................................................................................................55
Figure 23. Typical Condenser Water Loop..........................................................................................59
Figure 24. Tower Stage Table (Main>Configuration>Clg Tower Control>Tower Stage Table) ........60
Figure 25. Tower Staging Only............................................................................................................62
Figure 26. Tower Staging With Low-Limit Controlled Bypass Valve.................................................63
Figure 27. Tower Staging With Intrastage Controlled Bypass Valve ..................................................63
Figure 28. Initial Tower Bypass Valve Position (English)...................................................................66
Figure 29. Initial Tower Bypass Valve Position (SI)...........................................................................66
Figure 30. Configuration 1: Constant-Speed Single Pump ..................................................................69
Figure 31. Configuration 2: Constant-Speed Lead/Standby Pump Set ................................................70
Figure 32. Configuration 3: Constant-Speed Sequenced Pumps..........................................................70
Figure 33. Configuration 4: Variable-Speed Single Pump...................................................................70
Figure 34. Configuration 5: Variable-Speed Lead/Standby Pump Set.................................................71
Figure 35. Configuration 6: Multiple Variable-Speed Pumps..............................................................71

McQuay MicroTech II Specifications

General

Brand	McQuay
Model	MicroTech II
Category	Controller
Language	English