Carrier ChillerVu 23XRV Series Application Manual
Counterflow
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- Installation instructions manual (81 pages) ,
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Carrier® ChillerVu™
23XRV Series Counterflow Application Guide
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CARRIER CORPORATION ©2020 · Catalog No. 11-808-578-01 · 12/17/2020
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CARRIER CORPORATION ©2021
All rights reserved
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Table of Contents
Related Manuals for Carrier ChillerVu 23XRV Series
Summary of Contents for Carrier ChillerVu 23XRV Series
- Page 1 Carrier® ChillerVu™ CARRIER CORPORATION ©2021 23XRV Series Counterflow Application Guide All rights reserved ® ™ ® ™ CARRIER CORPORATION ©2020 · Catalog No. 11-808-578-01 · 12/17/2020...
- Page 2 Important changes are listed in Document revision history at the end of this document. CARRIER CORPORATION ©2020. All rights reserved throughout the world. i-Vu is a registered trademark of Carrier Corporation. All other trademarks are the property of their respective owners.
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Page 3: Table Of Contents
Contents What is the Carrier® ChillerVu™ series counterflow application? ............... 1 Application library ..............................2 Supported chiller hardware ..........................2 Network and hardware points ..........................3 Single loop plants with coolers in series (series counter flow) ................5 Start-up and Commissioning ..........................6 To set up ................................. -
Page 5: What Is The Carrier® Chillervu™ Series Counterflow Application
The Carrier® ChillerVu™ series counterflow (SCF) application is a proprietary control sequence designed to optimize the performance of two Carrier 23XRV screw chillers piped in a series counterflow arrangement. When combined with the Carrier® ChillerVu™ plant control system, the 23XRV SCF control program provides comprehensive, micro-processor-based, chilled water plant control that utilizes the full power and flexibility of the i-Vu®... -
Page 6: Application Library
Application library You generate the Carrier® ChillerVu™ SCF control program, with a basic SCF system graphic, in EquipmentBuilder, using the Plant System Manager SAL library. Build the control program by selecting options and control features to match your mechanical system's requirements. -
Page 7: Network And Hardware Points
Upstream Chiller Demand Limit exp:#upstream_chiller_1/cm_ch_dl_write Upstream Chiller Evaporator Liquid Temp exp:#upstream_chiller_1/est Upstream Chiller KW exp:#upstream_chiller_1/linekw_p Upstream Chiller Leaving Chilled Water Setpoint exp:#upstream_chiller_1/cm_ch_sp_write Upstream Chiller RPM exp:#upstream_chiller_1/cpr_rpm Carrier® ChillerVu™ CARRIER CORPORATION ©2021 23XRV Series Counterflow Application Guide All rights reserved... - Page 8 Relay / Triac Output Upstream Chiller Enable Relay / Triac Output *NOTE You must select OAT when building your control program in EquipmentBuilder in order to have that hardware point. Carrier® ChillerVu™ CARRIER CORPORATION ©2021 23XRV Series Counterflow Application Guide All rights reserved...
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Page 9: Single Loop Plants With Coolers In Series (Series Counter Flow)
Single loop plants with coolers in series (series counter flow) Characteristics • For Carrier 23XRV screw chillers only • A single pump or headered pump serves both chillers Location Constant flow systems where load variations are usually small Mechanical applications... -
Page 10: Start-Up And Commissioning
To begin • If connecting directly to the CCN bus, connect the 23XRV chillers to the S2 port of the Carrier® ChillerVu™ controller, using a daisy chain configuration. • If connecting by BACnet MS/TP or BACnet ARC156, using UPC Open controllers, connect the UPC Open for each 23XRV chiller to the S1 port of the Carrier®... -
Page 11: To Configure Properties
Upstream Chiller and Downstream Chiller — Confirm that the values in the i-Vu® application the PICs match those that are read from the ICVC or through Network Service Tool. Carrier® ChillerVu™ CARRIER CORPORATION ©2021 23XRV Series Counterflow Application Guide All rights reserved... -
Page 12: To Start-Up The Scf System
• Demand Limiting – verify that the system demand limit correctly regulates chiller operation when a demand limit signal is received over the network Carrier® ChillerVu™ CARRIER CORPORATION ©2021 23XRV Series Counterflow Application Guide All rights reserved... -
Page 13: Sequence Of Operation
Sequence of operation The Carrier® ChillerVu™ SCF application controls a single pair of 23XRV chillers in a series counterflow piping arrangement. Sequencing of multiple pairs of chillers or non-23XRV machines is not supported. Chiller sequencing preconditions Prior to start, the SCF control program runs a rotation calculation (see Rotation method (page 12)) to assign the lead chiller. -
Page 14: Chiller Staging Conditions
If both chillers are operating, and the leaving water setpoint of the downstream chiller is not met after a configured time delay, the leaving water setpoint is adjusted and sent to the upstream chiller to automatically compensate until the required downstream setpoint is achieved. Carrier® ChillerVu™ CARRIER CORPORATION ©2021 23XRV Series Counterflow Application Guide All rights reserved... -
Page 15: Automatic Resets After Single Chiller Failures
The application stores the adjusted run order (lead/stby MB) even if the SCF is disabled, and returns to using the replacement chiller (lag) as the lead, immediately when re-enabled, as long as power is not removed from the Carrier® ChillerVu™ controller. Automatic resets after dual chiller failures The SCF application can restart the system following a failure of both chillers. -
Page 16: Rotation Method
High Main Chilled Water Return Temp — if the main chilled water return temperature is greater than 65°F (configurable) • Low Main Chilled Water Return Temp — if the main chilled water return temperature is less than 38°F (configurable) Carrier® ChillerVu™ CARRIER CORPORATION ©2021 23XRV Series Counterflow Application Guide All rights reserved... -
Page 17: Optional Settings
As the outdoor air temperature drops from 75°F to 50°F (configurable), it will reset the chilled water setpoint upward by 0°F to 10°F (configurable). The maximum reset is 10°F (configurable). Carrier® ChillerVu™ CARRIER CORPORATION ©2021 23XRV Series Counterflow Application Guide All rights reserved... -
Page 18: Carrier® Chillervu™ 23Xrv Scf System Constants
Carrier® ChillerVu™ 23XRV SCF system constants In order for the Carrier® ChillerVu™ SCF application to operate properly and achieve maximum system efficiency, you must enter certain constants. These constants are provided by Carrier Water Cooled Chiller Marketing and are based on the equipment selection data for the specific machines used on the project. - Page 19 Double-click the Reference Name for the first constant and enter the updated value In Set Output to:. Click Accept. Repeat steps 3 - 6 for the remaining 5 constants. If there are any questions regarding constants, please contact the Carrier Water Cooled Chiller Marketing. Carrier® ChillerVu™ CARRIER CORPORATION ©2021...
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Page 20: Communicating With The 23Xrv Chillers
Network Point Addresses or Reference Names. This procedure differs, depending on whether you are using CCN to connect or UPC Open controllers. If there are any questions regarding connectivity to the 23XRV chillers, please contact the Carrier Control Systems Support. -
Page 21: To Connect Using Upc Open Controllers
In your i-Vu® interface, you must discover the UPC Open controllers and upload them into your database. (Select the Carrier® ChillerVu™ in the navigation tree, go to Devices > Manage tab, click Find Devices and then Upload all Content.) To establish connectivity for UPC Open-equipped 23XRV chillers, you must edit the Address for the Network Points for each chiller’s upstream and downstream points to include the BACnet Device Instance for each UPC. -
Page 22: Document Revision History
Added step to enable communication with chillers, using either C-TS-JN-E CCN or BACnet. 3/1/17 Start-up and Commissioning Added detailed i-Vu® instructions for connecting directly to CCN C-TS-JN-E * For internal use only Carrier® ChillerVu™ CARRIER CORPORATION ©2021 23XRV Series Counterflow Application Guide All rights reserved... - Page 24 CARRIER CORPORATION ©2020 · Catalog No. 11-808-578-01 · 12/17/2020...