Carrier 30RAP010-060 specifications Configuring and Operating Dual Chiller Con

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(Pump 1 Starts First) or 2 (Pump 2 Starts First). If PM.SL is 0 (Automatic), the pump selection is based on two criteria: the alert status of a pump and the operational hours on the pump. If a pump has an active Alert condition, it will not be considered for the lead pump. The pump with the lowest operational hours will be the lead pump. A pump is selected by the control to start and continues to be the lead pump until the Pump Changeover Hours (Configuration→OPT1→PM.DT) is reached. The Lead Pump (Run Status→VIEW→LD.PM) indicates the pump that has been selected as the lead pump: 1 (Pump 1), 2 (Pump 2), 3 (No Pump). The Pump Changeover Hours is facto- ry defaulted to 500 hours. Regardless of the Cooler Pump Se- lection, any pump that has an active alert will not be allowed to start.

With the dual integral pump package, the Cooler Pump Starter will be energized when the machine is in an occupied period. As part of the factory-installed package, an auxiliary set of contacts is wired to the MBB to serve as Chilled Water Pump Interlock, one set for each pump to individual channels on the MBB. With a call for mechanical cooling, the specific pump interlock and flow switch are checked. If the circuits are closed, the machine starts its capacity routine. If Pump 1 starts and the auxiliary contact interlock does not close within 25 seconds of the ON command, a T190 — Cooler Pump 1 Aux Contacts Failed to Close at Start-Up Alert will be generated and the pump shut down. The unit will not be allowed to start. If the chilled water flow switch does not close within 1 minute, two alarms will be generated. A T192 — Cooler Pump 1 Failed to Provide Flow at Start-Up Alert and an A200 — Cooler Flow/ Interlock Failed to Close at Start-Up Alarm will be generated and chiller will not be allowed to start. In either fault case listed above, Pump 2 will be commanded to start once Pump 1 has failed.

If Pump 2 starts and the auxiliary contact interlock does not close within 25 seconds of the ON command, a T191 — Cooler Pump 2 Aux Contacts Failed to Close at Start-Up Alert will be generated and the pump shut down. The unit will not be allowed to start. If the chilled water flow switch does not close within one (1) minute, two alarms will be generated. A T193

—Cooler Pump 2 Failed to Provide Flow at Start-Up Alert and an A200 — Cooler Flow/Interlock Failed to Close at Start-Up Alarm will be generated and chiller will not be allowed to start. In either fault case listed above, Pump 1 will be commanded to start once Pump 2 has failed.

If the chilled water flow switch opens for at least 3 seconds after initially being closed, a T196 — Flow Lost While Pump 1 Running Alert or T197 — Flow Lost While Pump 2 Running Alert for the appropriate pump and an A201 — Cooler Flow/ Interlock Contacts Opened During Normal Operation Alarm will be generated and the machine will stop. If available, the other pump will be started. If flow is proven, the machine will be allowed to restart.

If the chilled water pump interlock opens for 25 seconds after initially being closed is detected by the control, the appro- priate T194 — Cooler Pump 1 Contacts Opened During Nor- mal Operation Alert or T195 — Cooler Pump 2 Contacts Opened During Normal Operation Alert is generated and the unit is shut down. If available, the other pump will be started. If flow is proven, the machine will be allowed to restart.

If the control detects that the chilled water flow switch circuit is closed for at least 5 minutes with the pump output OFF, an A202 — Cooler Pump Interlock Closed When Pump is Off Alarm will be generated and the unit will not be allowed to start.

If the control detects that the chilled water pump auxiliary contacts are closed for at least 25 seconds while the pump is OFF, the appropriate T198 — Cooler Pump 1 Aux Contacts Closed While Pump Off or Alert T199 — Cooler Pump 2 Aux Contacts Closed While Pump Off Alert is generated. The chiller will not be allowed to start.

If the control starts a pump and the wrong interlock circuit closes for at least 20 seconds, an A189 – Cooler Pump and Aux Contact Input Miswire Alarm will be generated. The unit will be prevented from starting.

The control will allow for pump changeover. Two methods will change the pump sequence. Before the changeover can occur, the unit must be at Capacity Stage 0. During changeover the chilled water flow switch input is ignored for 10 seconds to avoid a nuisance alarm.

With Cooler Pump Select (Configuration→OPT1→ PM.SL) set to 0 (Automatic) and when the differential time limit Pump Changeover Hours (Configuration→OPT1 →PM.DT) is reached, the lead pump will be turned OFF. Ap- proximately one (1) second later, the lag pump will start. Manu- al changeover can be accomplished by changing Rotate Cooler Pump Now (Configuration→OPT1→ROT.P) to YES only if the machine is at Capacity Stage 0 and the differential time limit Pump Changeover Hours (PM.DT) is reached. If the PM.DT is not satisfied, the changeover will not occur. With the machine at Capacity Stage 0, the pumps would rotate automatically as part of the normal routine.

With Cooler Pump Select (PM.SL) set to 1 (Pump 1 Starts First) or 2 (Pump 2 Starts First), a manual changeover can be ac- complished by changing PM.SL only. The machine Remote- Off-Enable Switch must be in the OFF position to change this variable. The Rotate Cooler Pump Now (ROT.P) feature does not work for these configuration options.

As part of a pump maintenance routine, the pumps can be started to maintain lubrication to the pump seal. To utilize this function, Cooler Pmp Periodic Start (Configuration→OPT1 →PM.PS) must be set to YES. This option is set to NO as the factory default. If feature is enabled and the pump(s) are not operating, then the pumps will be operated every other day for 2 seconds starting at 14:00 hours. If a pump has failed and has an active Alert condition, it will not be started that day.

Configuring and Operating Dual Chiller Con-

trol — The dual chiller routine is available for the control of two units supplying chilled fluid on a common loop. This control algorithm is designed for parallel fluid flow arrangement only. One chiller must be configured as the master chiller, the other as the slave. An additional leaving fluid temperature thermistor (Dual Chiller LWT) must be installed as shown in Fig. 16 and 17 and connected to the master chiller. Refer to Sen- sors section, page 20, for wiring. The CCN communication bus must be connected between the two chillers. Connections can be made to the CCN screw terminals on LVT. Refer to Carrier Comfort Network® Interface section, page 19, for wiring infor- mation. Configuration examples are shown in Tables 22 and 23.

Refer to Table 22 for dual chiller configuration. In this example the master chiller will be configured at address 1 and the slave chiller at address 2. The master and slave chillers must reside on the same CCN bus (Configuration→CCN →CCNB) but cannot have the same CCN address (Configu- ration→CCN→CCNA). Both master and slave chillers must have Lead/Lag Chiller Enable (Configuration→RSET →LLEN) configured to ENBL. Master/Slave Select (Config- uration→RSET →MSSL) must be configured to MAST for the master chiller and SLVE for the slave. Also in this example, the master chiller will be configured to use Lead/Lag Balance Select (Configuration→RSET→LLBL) and Lead/Lag Bal- ance Delta (Configuration→RSET→LLBD) to even out the chiller run-times weekly. The Lag Start Delay (Configura- tion→RSET→LLDY) feature will be set to 10 minutes. This will prevent the lag chiller from starting until the lead chiller has been at 100% capacity for the length of the delay time. Par- allel configuration (Configuration→RSET→PARA) can only be configured to YES. The variables LLBL, LLBD and LLDY are not used by the slave chiller.

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Contents Controls, Start-Up, Operation, Service, and Troubleshooting ContentsContents Safety ConsiderationsGeneral Basic Controls UsageUnit Sizes Unit Nominal Capacity TonsAccessory Navigator Display Module Mode RUN Service Temperatures SET Inputs Outputs Configuration Time Operating AlarmsScrolling Marquee Display Menu Structure TestRun Status Mode and Sub-Mode Directory StrtSUB-MODE Keypad Display SUB-ITEM Comment Entry Expansion VersService Test Mode and Sub-Mode Directory SUB-MODE Keypad Display Comment Entry Expansion TestOuts CmpaTemperature Mode and Sub-Mode Directory Pressure Mode and Sub-Mode DirectorySet Points Mode and Sub-Mode Directory Inputs Mode and Sub-Mode Directory Outputs Mode and Sub-Mode DirectoryConfiguration Mode and Sub-Mode Directory SUB-MODE Keypad Display Comment Entry Expansion EXVOPT1 SUB-MODE Keypad Display Comment Entry Expansion UnitSUB-MODE Keypad Display Comment OPT2XXX XXX.X ΔF Time Clock Mode and Sub-Mode Directory DateDST Operating Mode and Sub-Mode Directory Alarms Mode and Sub-Mode DirectoryMode Item Expansion Description Operating ModesControls Control Module CommunicationCarrier Comfort Network CCN Interface CCN Communication Bus Wiring Thermistor DesignationsStatus Inputs Output RelaysAlmr AUXCCB CHCA30-4962 A30-4963A30-4964 Typical Control Box for 30RAP035-060Typical Wiring Schematic, 30RAP018-030 Units Power Wiring Typical Wiring Schematic, 30RAP018-030 Units Control Wiring A30-4966Typical Wiring Schematic, 30RAP035-060 Units Power Wiring 5283Typical Wiring Schematic, 30RAP035-060 Units Control Wiring A30-5284A30-4967 A30-4968Page CEPL130351 Deadband Multiplier 30RAP Unit Size Control Capacity Steps Capacity %A30-4969 Operating Envelope for R-410A CompressorCooling Set Point Select A30-497030RAP Unit Size FAN Stages Optional Factory-Installed Hydronic Pack Control Methods and Cooling Set PointsControl Occupancy Cooling SET Point Select Clsp Type State CCN→PM1E = YES Configuring and Operating Dual Chiller Con Dual Chiller Configuration Master Chiller Example RsetPart NumberSUB-MODE Keypad Entry Display Item Expansion Comments Dual Chiller Configuration Slave Chiller Example Rset Slave CompleteTo 20 mA Reset Menu Configuration of 4 to 20 mA Cooling Set Point ControlConfiguring Outdoor Air and Space Temperature Reset Configuring Return Temperature ResetMode Keypad SUB Display RED LED Entry ModeOutdoor-Air Temperature Reset To 20-mA Demand Limiting Configuring Demand Limit Item Expansion Comment Entry ConfigurationPRE-START-UP System CheckSTART-UP and Operation A30-497830RAP Minimum Cooler Flow Maximum Cooler Flow Size Temperature Limits for Standard 30RAP Units Operating LimitationsOperation Sequence Unit Size 30RAService Electronic ComponentsEXV Steps Unit Size 30RAP EXV StepsA30-4971 Electronic Expansion Valve DetailsCompressor Replacement Refer to Fig Unit Torque SpecificationCooler A30-4972Oil Charge Check Refrigerant Feed ComponentsA30-4973 A30-4974LWT Factory Settings, High-Pressure Switch Fixed Check Unit SafetiesUnit Cutout CUT-IN Thermistor Well Temp Voltage Resistance Drop 100,260 143 86K Thermistor vs Resistance DTT DropA30-4975 A30-499A30-4976 AccsyP50 Fault History Last 8 faults P51 Software version Mode Nominal Voltage Control Input Start Jumper A30-4977TB1-TB2 TB13A-TB2Fault Codes Parameters Description Mode Motormaster V Program Parameters for Operating ModesPID Maintenance Replacement ModulesReplacement Replacement Part Module Troubleshooting Advanced Scroll Temperature Protection Label 30RAP Unit Cutout CUT-IN SizeTroubleshooting Symptoms Cause RemedyAlarm and Alert Codes T051T110 T153 T197 Alert GENERATED? CCNCSB EMMCompressor Stuck on Failure Alarms Page Appendix a Display Tables SUB-MODE Display Item Description CommentView RUNAppendix a Display Tables StrtVers Pressures Mode and Sub-Mode Directory SUB-MODE Display Item Description Range Comment CoolHead FRZGEN.O SUB-MODE Display Item Description Comment HP.A HP.BEXV.A EXV.BRset Bcst SUB-MODE Display Item Description Comment Time DateDST HOL.LHD.19 HD.30 SUB-MODE Display Item Description Comment SCH.N SCH.LPER.1 PER.2PER.6 PER.7PER.8 Crnt RcrnHist Appendix B CCN Tables CCN Display Tables Aunit General Unit ParametersCCN Display Tables Circaan Circuit a Analog Parameters Description Value Units Point Name ForcibleAppendix B CCN Tables CCN Display Tables Circban Circuit B Analog ParametersCCN Configuration Tables Unit Unit Configuration CCN Configuration Tables OPTIONS1 Options 1 ConfigurationDescription Value Default Units Point Name CCN Display Tables Options Unit ParametersCCN Configuration Tables OPTIONS2 Options 2 Configuration CCN Configuration Tables Schedovr Timed Override SetupCCN Configuration Tables Display Marquee Display Setup CCN Configuration Tables Mmconf Motormaster ConfigurationCCN Service Tables Service Description Value Units Point Name Description Value Point NameCCN Maintenance Tables Alarms Description Version ValueCCN Maintenance Tables PM-PUMP CCN Maintenance Tables Runtest CCN Maintenance Tables Dualchil Appendix C Factory Settings for Pump and Manual Starters SettingAppendix D Optional Bacnet Communications Wiring Optional BACnet Communications WiringAppendix D Optional Bacnet Communications Wiring Table a SW3 Protocol Switch Settings For MS/TPTable B Baud Selection Table DS8 DS7 DS6 DS5 DS4 DS3Table C MS/TP Wiring Recommendations Specification RecommmendationAWG CL2PWiring Specifications Recommended Vendors and Part Numbers RmcorpCMP Table E LED Status Indicators RUN LED Error LED StatusLED Status Control Mode Table G Network Points List108 109 Appendix E Maintenance Summary and LOG Sheets 30RAP Maintenance Interval RequirementsWeekly QuarterlyAppendix E Maintenance Summary and LOG Sheets 30RAP Weekly Maintenance Log30RAP Monthly Maintenance Log Unit Section Action EntryPSI 30RAP Seasonal Shutdown Log 113Copyright 2010 Carrier Corporation START-UP Checklist for 30RAP Liquid Chiller Remove and use for Job File Project InformationII. Preliminary Equipment Check Design InformationIII. Unit Start-Up Start and Operate Machine. Complete the FollowingDual Chiller Control Only Mode RUN Status Record Software VersionsUnit Configuration Settings OPTIONS1 Options ConfigurationSubmode Item Expansion Display Entry OPT1OPTIONS2 Options Configuration CCN CCN Network ConfigurationHP.A Head Pressure Cmp. Delta Configuration HP.B Head Pressure Cmp. Delta ConfigurationEXV.A Circuit a EXV Configuration EXV.B Circuit B EXV ConfigurationMM Motormaster Configuration Settings EXV.BRset Reset Configuration Settings Slct Setpoint and Ramp Load ConfigurationSetpoint SUB-MODE Keypad Display Comment Entry Expansion
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30RAP010-060 specifications

The Carrier 30RAP010-060 is a series of rooftop air conditioning units designed for effective climate control in commercial applications. Engineered with advanced technologies, these units are known for their reliability, energy efficiency, and ease of installation, making them a suitable choice for a range of settings including offices, retail spaces, and industrial facilities.

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