Contents 30MP Multi-chiller overview and specifications ......................1 What is the 30MP Multi-chiller application? ....................1 Controller specifications ............................2 Safety considerations............................3 Installing the controller ............................... 4 Mounting the controller ............................4 Wiring the controller for power ........................... 5 To wire for power ...........................
What is the 30MP Multi-chiller application? The 30MP Multi-chiller is a special purpose application used to control from two to eight 30MP chillers as a single large chiller, which is operated from the AppController. Each 30MP chiller must be equipped with the 30MP UPC Open interface.
30MP Multi-chiller overview and specifications Controller specifications Power 24 Vac ±10%, 50–60 Hz 20 VA power consumption 26 Vdc (25 V min, 30 V max) Single Class 2 source only, 100 VA or less BACnet Port For communication with the controller network using BACnet ARC156 (156 kbps) or BACnet MS/TP (9600 bps –...
30MP Multi-chiller overview and specifications Overall dimensions 5-5/8 in. (14.3 cm) 5-1/8 in. (13 cm) Mounting dimensions 5-1/4 in. (13.3 cm) 2-9/16 in. (6.5 cm) 3/16 in. (.5 cm) Panel depth 2 in. (5.1 cm) Weight 0.44 lbs. (0.20 kg)
The controller is powered by a Class 2 power source. Take appropriate isolation measures when mounting it in a control panel where non-Class 2 circuits are present. • Carrier controllers can share a power supply as long as you: • Maintain the same polarity.
NOTE This document gives instructions for wiring the sensors to the controller. For mounting and wiring the sensors, see the Carrier Sensors Installation Guide. WARNING Disconnect electrical power to the controller before wiring it. Failure to follow this warning could cause electrical shock, personal injury, or damage to the controller.
All 30MP chillers must be the same type, either all air-cooled or all water-cooled. • A BACnet MS/TP bus must connect the 30MP chiller control to all 30MP UPC Open controllers. See To wire the controller to the network (page 6).
Link. Purchase a USB isolator online from a third-party manufacturer. Configure the chiller system You must address and configure the chiller system before starting the 30MP Multi-chiller controller, which supports a maximum of 8 chillers. The steps below enable the controller to communicate with each individual chiller through their corresponding UPC Open.
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Configuring your system Assign a unique address to each 30MP UPC Open and then note the address and chiller size/model #. You can use the table below. Assign CH-1 UPC Open to address 1, CH-2 UPC Open to address 2, etc..
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Repeat for each chiller. In the i-Vu® or Field Assistant interface, select the 30MP chiller UPC Open in the navigation tree and go to Properties > Control Program tab > Linkage. On the touchscreen, go to the Linkage Configuration screen.
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Start-up NOTE Each 30MP UPC Open is factory-set to #1, so you only have to configure chillers CH-2 through CH-8. CAUTION Do not change Number of Providers from 0. Click Accept. 10 Repeat for each chiller. Setting the controller CAUTION Set jumper IN-2 for 0-5 Vdc. You must change the factory default position of Thermistor/dry contact.
Sequence of Operation Sequence of Operation The 30MP Multi-chiller sequences chillers in order to maintain the desired water temperature setpoint. The control can be configured to maintain supply or return water temperature. Whenever the controller is in an occupied mode, the water temperature sensor is compared to the desired setpoint.
NOTE Scheduling can only be controlled from one source. Demand limiting The 30MP Multi-chiller can provide up to 3 stages of demand limiting, if connected to an electric metering program indicating that demand limiting is required. Demand Limiting works using 2 different methods. The first connects the BACnet network input point System Cool Demand Level to the electric metering program, to send a value for the demand level.
RH cooling reset The 30MP Multi-chiller can reduce any calculated OA reset, if the sensed relative humidity is above the control setpoint. If you set RH Cooling Setpoint Reset to Enable, as the RH increases above the Occ Relative Humidity Setpoint, a PID calculates the amount of reduction in the OA reset value.
AO-1 to provide a 2-10 Vdc or 0-10 Vdc signal to control a tower fan VFD. If you have an external control system, you can use the 30MP Multi-chiller to provide the optimum tower setpoint value to the external control. A network-accessible AV point, Condenser Water Setpoint, can provide the desired condenser water temperature setpoint in °F.
This operates the system properly and meets the desired chilled water setpoint by commanding each individual 30MP chiller to run as necessary. The operating mode, hot gas valve status, and entering and leaving water temperatures are displayed on the graphic, along with other information.
Troubleshooting Troubleshooting If you have problems mounting, wiring, or addressing the controller, contact Carrier Control Systems Support. NOTE To help you troubleshoot, obtain a Module Status (Modstat) from the controller and review the System Error and Warning details. LED's The LED’s indicate if the controller is speaking to the devices on the network. The LED’s should reflect communication traffic based on the baud rate set.
Appendix A: 30MP Multi-chiller wire list Appendix A: 30MP Multi-chiller wire list System Network - 30MP Multi-chiller Project Name: Controller: Location: Network Number: MAC Address: Point/ Inputs Input Jumper Sensor Equipment Point Cable# Type Position code Name Name of Pins...
Appendix C: 30MP Multi-chiller Points/Properties Appendix C: 30MP Multi-chiller Points/Properties The following tables describe all of the possible settings for your controller on the i-Vu® or Field Assistant Properties tab. NOTE Some of the properties are available only when other settings have been enabled. See Appendix D for the points and properties available on the touchscreen interface.
Appendix C: 30MP Multi-chiller Points/Properties Point Name/Description Range Shutdown – When Active, provides a means to stop the chiller plant in an orderly Inactive manner. All alarms are reset and only currently active alarms are displayed. Inactive/Active Unit Configuration Navigation: i-Vu®...
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Appendix C: 30MP Multi-chiller Points/Properties Point Name/Description Range Sensor Calibration Leaving Load Water Temperature – The current leaving load water temperature. __°F Leaving Source Temp Sensor Calibration – A calibration offset value that allows you to 0°F adjust the local leaving source water temperature sensor to match a calibrated standard -9.9 to 10°F...
Appendix C: 30MP Multi-chiller Points/Properties Point Name/Description Range Defined Time for Rotation – Specify the time of day (24 hour format) for automatic 8:00 rotation based on the method and schedule you selected. 1:00 to 24:00 (Not applicable to Runtime Equalization.)
Appendix C: 30MP Multi-chiller Points/Properties Point Name/Description Range Relative Humidity Occ Relative Humidity Setpoint – The control setpoint used during occupied periods. 60%rh 0 to 100%rh Cooling Demand Limit Demand Level 1 – Enables Demand Level 1 to limit the maximum stage capacity to the Disable current operating capacity.
Appendix C: 30MP Multi-chiller Points/Properties Point Name/Description Range High Entering Load Water Temp Alarm Limit – The Entering Load Water Temp must 125°F exceed this value to generate an Entering Load Water Temperature Alarm. There is a fixed 90 to 150°F hysteresis of 2 °F for return to normal.
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Appendix C: 30MP Multi-chiller Points/Properties Point Name/Description Range ACR Timer – (Additional Capacity Required) Determines the time delay before an 5:00 minutes additional compressor stage can be added. 2:00 - 20:00 minutes RCR Timer – (Reduced Capacity Required) Determines the time delay before an 3:00 minutes additional compressor stage can be removed.
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Appendix C: 30MP Multi-chiller Points/Properties Point Name/Description Range System Cool Demand Level – The system cool demand level being received over the 0.00 network. 0 to 3 System Outdoor Air Temperature – Allows the controller to use an outdoor air -999.00°F...
Appendix C: 30MP Multi-chiller Points/Properties Lvg Load Water Temp Alarm – Enables leaving load water temperature failure alarm. Enable Disable/Enable Lvg Load Wtr Sensor Alarm – Enables leaving load water temperature alarm. Enable Disable/Enable Ent Load Water Temp Alarm – Enables entering load water temperature alarm.
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Appendix C: 30MP Multi-chiller Points/Properties Point Name/Description Range Number Of Stages – The total number of chiller plant stages - compressors, not including 0 to 24 hot gas bypass. Chiller Plant Size - The chiller plant's total size in tons.
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Appendix C: 30MP Multi-chiller Points/Properties Point Name/Description Range Condenser Water Temp Source – The control setpoint value's source. Local States: Network Linkage • N/A - No sensor value associated with this device Locked Value • Local - A physical sensor is wired and connected to the appropriate input channel of this controller •...
Appendix C: 30MP Multi-chiller Points/Properties Point Name/Description Range Schedules – The controller's occupancy status based on the local schedule. Unoccupied/Occupied Occupancy Contact – The current status of Input Channel #5 when configured as a Inactive Remote Occupancy contact input. Active Occupied Global Occupancy –...
Appendix C: 30MP Multi-chiller Points/Properties Point Name/Description Range Space Relative Humidity – Indicates if the relative humidity exceeds the high RH alarm Normal/Alarm limit. Leaving Load Water Temp Sensor – Indicates if the leaving load water temperature Normal/Alarm sensor fails.
Appendix C: 30MP Multi-chiller Points/Properties Point Name/Description Range CH-2 to CH-8 Linkage Provider - same as above Linkage Configuration Reset – Resets the Linkage configuration. checked or unchecked NOTE Use if Linkage was configured incorrectly. Chiller #1 Chiller #1 Linkage Status - The Linkage connection's status.
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Appendix C: 30MP Multi-chiller Points/Properties AI Setpoint – The current voltage of the controller's external chilled water setpoint 0 to 5 Vdc sensor input. Allowable input range is 1-5 Vdc. OAT Sensor – The value of the controller's outdoor air temperature sensor input, prior to -56 to 245°F...
Appendix D: Touchscreen settings Appendix D: Touchscreen settings 30MP Multi-chiller System Touch navigation screens To set up the communication baud rate On the System View screen, click Setup. On the Setup screen, tap Communications. Tap the radio button for the correct baud rate and then click Save.
NOTE The System Touch indicates the upload progress. If you do not see your custom screens, you should reload the firmware by going to the Setup screen > Touchscreen Setup > Reload Firmware. 30MP Multi-chiller's Equipment Touch navigation screens Screen Names Display...
Appendix D: Touchscreen settings 30MP Multi-chiller Start-up Wizard Navigation: Equipment Touch Startup Wizard Point Name/Description Range Control Point – Defines whether the control monitors and uses Leaving Water Temp or Leaving Water Temp Entering Water Temp to control this equipment.
Appendix D: Touchscreen settings 30MP Multi-chiller Chiller Linkage Source Address Navigation: Equipment Touch Startup Wizard Chiller Linkage Source Address > Point Name/Description Range Set up each Chiller #x Linkage Source Address using the following properties. Navigate to the Linkage screen by clicking on the bottom.