Carrier AQUAFORCE 30XA080-500 Controls, Start-up, Operation, Service And Troubleshooting Instructions

Also see for AQUAFORCE 30XA080: Installation instructions Controls, start-up, operation, service and troubleshooting instructions Installation instructions Product data

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Carrier AQUAFORCE 30XA080-500 Controls, Start-up, Operation, Service And Troubleshooting Instructions Manual pdf 36 page image

36DUAL CHILLER PUMP CONTROL FOR PARALLELCHILLER APPLICATIONS — It is recommended that adedicated pump be used for each unit. The chiller must startand stop its own water pump located on its own piping. Ifpumps are not dedicated for each chiller, chiller isolationvalves are required and each chiller must open and close itsown isolation valve.DUAL CHILLER CONTROL FOR SERIES APPLICA-TIONS — To configure the master chiller for series applica-tions using the Touch Pilot™ display, see Table 32. Toconfigure the master chiller for series applications using theNavigator™ display, see Table 33.To configure the slave chiller for series applications usingthe Touch Pilot™ display, see Table 34. To configure the slavechiller for series applications using the Navigator™ display,see Table 35. A power cycle is required for the values to takeeffect.Table 32 — Dual Master Chiller Control Parameters for Series Applications with Touch Pilot™ DisplayNOTE: If pump control is configured to OFF, then LAG UNIT PUMPSELECT = 1. If pump control is set to any other value, then LAGUNIT PUMP SELECT = 0. This configuration must be set consis-tently for both master and slave chillers.Table 33 — Dual Master Chiller Control Parameters for Series Applications with Navigator™ DisplayNOTE: If pump control is configured to OFF, then LAG UNIT PUMPSELECT = 1. If pump control is set to any other value, then LAGUNIT PUMP SELECT = 0. This configuration must be set consis-tently for both master and slave chillers.DISPLAY NAME PATH LINE NO. VALUEMaster/Slave Select Main MenuConfigMST_SLV 3 1 (Master)Default: 0 (Disable)Master Control Type Main MenuConfigMST_SLV 71 (Local Control)2 (Remote Control)3 (CCN Control)Default: 1 (Local Control)Value: Configure for proper control type.Slave Address Main MenuConfigMST_SLV 11Must be set to the Slave Chiller’s address.The master and slave chiller must havedifferent addresses and be on the sameBus NumberDefault: 2Lead Lag Select Main MenuConfigMST_SLV 120 (Master Always Leads)1 (Lag Once Failed Only)2 (Lead/Lag Runtime Select)Default: 0 (Master Always Leads)Lead/Lag Balance Delta Main MenuConfigMST_SLV 16 Range: 40 to 400 hoursDefault: 168 hoursLag Start Timer Main MenuConfigMST_SLV 17 Range: 2 to 30 minutesDefault: 10 minutesLead Pulldown Time Main MenuConfigMST_SLV 18 Range: 0 to 60 minutesDefault: 0 minutesStart If Error Higher Main MenuConfigMST_SLV 19 Range: 3.0 to 18 F (1.7 to 10.0 C)Default: 4.0 F (2.2 C)Lag Minimum Running Time Main MenuConfigMST_SLV 20 Range: 0 to 150 minutesDefault: 0 minutesLag Unit Pump Control Main MenuConfigMST_SLV 210 (Stop If Unit Stops)1 (Run If Unit Stops)Default: 0 (Stop If Unit Stops)Chiller In Series Main MenuConfigMST_SLV 22 YesDefault: NoITEM ITEM EXPANSION PATH VALUEMSSL Master/Slave Select ConfigurationRSET MasterDefault: DisableSLVA Slave Address ConfigurationRSETMust be set to the Slave Chiller’s address.The master and slave chiller must havedifferent addresses and be on the sameBus NumberDefault: 2LLBL Master Lead Lag Select ConfigurationRSET Range: Always Lead, Lag if Fail, Runtime SelDefault: Always LeadLLBD Lead/Lag Balance Delta ConfigurationRSET Range: 40 to 400 hoursDefault: 168 hoursLLDY Lag Start Delay ConfigurationRSET Range: 2 to 30 minutesDefault: 10 minutesLL.ER Start If Error Higher ConfigurationRSET Range: 3.0 to 18 F (1.7 to 10.0 C)Default: 4.0 F (2.2 C)LAG.M Lag Unit Pump Select ConfigurationRSET Range: Off If U Stp, On If U StopDefault: Off If U StpLPUL Lead Pulldown Time ConfigurationRSET Range: 0 to 60 minutesDefault: 0 minutesSERI Chillers in Series ConfigurationRSET YESDefault: NOOPER Operating Control Type Operating ModesSLCT Set to desired value