Vertiv XDU1350 Planning Manual
Coolant distribution unit
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- Operation and maintenance manual (96 pages) ,
- Installation and commissioning manual (82 pages)
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Summary of Contents for Vertiv XDU1350
- Page 1 XDU1350 Coolant Distribution Unit Application and Planning Guide XDU1350B...
- Page 2 The products covered by this instruction manual are manufactured and/or sold by Vertiv. This document is the property of Vertiv and contains confidential and proprietary information owned by Vertiv. Any copying, use, or disclosure of it without the written permission of Vertiv is strictly prohibited.
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Page 3: Table Of Contents
Appendix B: Pipe Schematic Vertiv™ XDU1350 Appendix C: Warranty Details Appendix D: Notes Appendix E: Disposal Information Appendix F: Modbus Register Table Appendix G: Vertiv™ XDU1350 BACnet Object List Vertiv™ | XDU1350 Coolant Distribution Unit Application and Planning Guide |... - Page 4 Vertiv™ | XDU1350 Coolant Distribution Unit Application and Planning Guide |...
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Page 5: Important Safety Instructions
1 Important Safety Instructions Save These Instructions This manual contains important application information pertaining to the Vertiv™ XDU1350. The information contained in this document must be used in conjunction with the Installation and Commissioning Guide and the Operation and Maintenance Guide for the XDU1350B. - Page 6 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide WARNING! Risk of improper wire sizing/rating and loose electrical connections causing overheated wire and electrical connection terminals resulting in smoke or fire. Can cause serious injury or death. Building and equipment damage may also result. Use correctly sized copper wire only and verify that all electrical connections are tight before turning power On.
- Page 7 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide CAUTION: Risk of improper handling heavy and lengthy parts. Can cause injury. Building and equipment damage may also result. Cabinet panels can exceed 5 ft. (1.5 m) in length and weigh more than 35 lb. (15.9 kg).
- Page 8 Vertiv recommends installing a monitored fluid detection system that is wired to activate the automatic closure of field installed coolant fluid supply and return shut off valves to reduce the amount of coolant fluid leakage and consequential equipment and building damage.
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Page 9: General
All safety, installation, operation and maintenance instructions must be adhered to. Any work on or use of the equipment should only be carried out and/or supervised by personnel trained and qualified to work on this type of equipment by Vertiv. -
Page 10: Installation And Handling
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide 1.2 Installation and Handling WARNING! Risk of improper wiring, piping, moving, lifting and handling. Can cause serious injury or death. Building and equipment damage may also result. Installation and service of this equipment should be done only by qualified personnel who have been specially trained in the installation of air conditioning equipment and who are wearing appropriate, OSHA approved PPE. -
Page 11: Application
Differential pressure is the principle means of PQ control for both a single unit and in group operation. Instrumentation and reporting in this aspect is accurate and reliable. 1.4 Warranty Failure to comply with the Vertiv’s installation, maintenance, and operation instructions may affect the reliability and performance of the unit and invalidate any warranty. 1.5 Electrical Connection WARNING! Arc flash and electric shock hazard. -
Page 12: Replacement Parts
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide NOTICE Risk of improper power supply connection. Can cause equipment damage and loss of warranty coverage. Prior to connecting any equipment to a main or alternate power source (for example backup generator systems) for startup, commissioning, testing, or normal operation, ensure that these sources are correctly adjusted to the nameplate voltage and frequency of all equipment to be connected. -
Page 13: Agency
IP21 rating. This product is in conformance with UL1995. 2.2 ROHS 3 Compliance Vertiv certifies that this product, manufactured and supplied by Vertiv, is fully RoHS compliant in accordance with EU RoHS Directives EU 2015/863. 2 Agency... - Page 14 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide This page intentionally left blank Proprietary and Confidential ©2025 Vertiv Group Corp. 2 Agency...
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Page 15: Product Description
3.1 General This document describes the performance, possible configurations, application, and specification of the Vertiv™ XDU1350. The XDU1350 contains a secondary closed loop circuit that provides a supply of cooling fluid to equipment based on differential pressure. The XDU1350 was designed specifically to cool IT equipment through one of two methods: Indirect such as rack mounted rear door heat exchangers. -
Page 16: Model Number Nomenclature
(typically secondary loop is above the ambient dew point). 3.3 Model Number Nomenclature The XDU1350 can be configured for voltage options to suit most global locations, secondary filtration, primary top/bottom connections and secondary top/bottom connections. Table 3.1 below is an example of the XDU1350 model number, fully configured. -
Page 17: Product Accessories
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Table 3.2 Model Number Definitions (continued) Digit Feature Value Description None Secondary circuit fluid monitoring pH + Conductivity (0-10,000 us/cm range) + Turbidity (0-100 NTU) Pump configuration 3 Pumps Standard EMC filter... -
Page 18: Product Views
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide 3.5 Product Views NOTE: These model images are provided for reference only. Figure 3.1 Front View of Vertiv™ XDU1350 (without Panels) With Top Secondary Connection, Bottom Primary Connection and Flexible Make-up Container Item... - Page 19 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Figure 3.2 Rear View of Vertiv™ XDU1350 (With Panels) With Top Secondary Connection, Bottom Primary Connection and Flexible Make up Container Description Item Description Item Manual air vents (fitted below each...
- Page 20 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Figure 3.3 Rear View of Vertiv™ XDU1350 (Without Panels) With Top Secondary and Primary Connection, Stainless Steel Reservoir, Secondary Fluid Quality Monitoring and an ATS Item Description Item Description Secondary flowmeter...
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Page 21: Technical Data
Keep clean (no dust), well ventilated, and non-condensing. Storage Time Up to 6 months. If storing longer than 6 months, please consult Vertiv. Operating Conditions 5 to 40 °C (ambient), 10 to 80 % RH (non-condensing) Storage Conditions 2 to 65 °C, 5 to 95 % RH (non-condensing) -
Page 22: Electrical Data
NOTE: It is expected that the XDU1350B is connected to a UPS for backup power in case of a power outage. Please speak with your Vertiv representative to ensure that the UPS is sized properly. Proprietary and Confidential ©2025 Vertiv Group Corp. -
Page 23: Pressure Limitations
Vertiv recommends installing a monitored fluid detection system that is wired to activate the automatic closure of field installed coolant fluid supply and return shut off valves to reduce the amount of coolant fluid leakage and consequential equipment and building damage. -
Page 24: Primary (Facility) Circuit
500 microns/35 mesh, as a minimum. The primary circuit of Vertiv™ XDU1350 is rated for a maximum working pressure of 145 psi (10 bar). If the pressure at installation exceeds this, then arrangements should be made to fit a pressure reducing valve. -
Page 25: Secondary Circuit
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide 4.6 Secondary Circuit Secondary pipework components must be clean and free of organic matter and debris down to the level of filtration required by the application. Clean treated fluid must be used in assembly operations, and any residual water blown out and the pipework dried before filling with the secondary fluid to be used. - Page 26 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Table 4.6 Secondary Circuit—Wetted Materials Component Materials Hygienic fittings 316 Stainless steel, EPDM seals Butterfly hygienic valves 316 Stainless steel, EPDM seals Pipe work 316 Stainless steel Machined pipe fittings 304 Stainless steel...
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Page 27: Communications
5.1 Remote Monitoring and Control The XDU1350 provides a RS-485 and 2 off 10/100 Ethernet communication ports for external and remote monitoring and control via customer BMS and/or DCIM and/or supercomputer control nodes. BACnet is provided as an option for external and remote monitoring and control. - Page 28 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide This page intentionally left blank Proprietary and Confidential ©2025 Vertiv Group Corp. 5 Communications...
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Page 29: Appendices
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Appendices Appendix A: Technical Support and Contacts A.1 Technical Support/Service in the United States Vertiv Group Corporation 24x7 dispatch of technicians for all products. 1-800-543-2378 Liebert® Thermal Management Products 1-800-543-2378 Liebert® Channel Products 1-800-222-5877 Liebert®... - Page 30 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide This page intentionally left blank Proprietary and Confidential ©2025 Vertiv Group Corp. Appendices...
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Page 31: Appendix B: Pipe Schematic Vertiv™ Xdu1350
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Appendix B: Pipe Schematic Vertiv™ XDU1350 Figure B.1 Pipe Schematic with Flexible Make up Container Proprietary and Confidential ©2025 Vertiv Group Corp. - Page 32 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Figure B.2 Pipe Schematic with Stainless Steel Reservoir Tank Proprietary and Confidential ©2025 Vertiv Group Corp.
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Page 33: Appendix C: Warranty Details
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Appendix C: Warranty Details C.1 Limited Product and Service Warranty Extended warranties, service and maintenance programs are available in most locations, details available upon request. To obtain further details of limited warranty, also after sales service offerings, contact your local sales representative or technical support if you have any questions or problems during unit installation. - Page 34 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide This page intentionally left blank Proprietary and Confidential ©2025 Vertiv Group Corp.
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Page 35: Appendix D: Notes
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Appendix D: Notes Proprietary and Confidential ©2025 Vertiv Group Corp. - Page 36 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide This page intentionally left blank Proprietary and Confidential ©2025 Vertiv Group Corp.
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Page 37: Appendix E: Disposal Information
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Appendix E: Disposal Information NOTE: Waste materials must be disposed of in a responsible manner in line with environmental regulations. The de-commissioning and disposal of this product should be undertaken by qualified personnel in adherence to local and national safety regulations, particularly for protection of lungs, eyes, and skin from chemicals, dust, etc. - Page 38 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide This page intentionally left blank Proprietary and Confidential ©2025 Vertiv Group Corp.
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Page 39: Appendix F: Modbus Register Table
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Appendix F: Modbus Register Table Table F.1 Discrete Inputs Vertiv™ XDU1350 Register Number Register Description Alarm Code Critical Alarm (0 means Inactive, 1 means Active) Non-Critical Alarm (0 means Inactive, 1 means Active) - Page 40 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Table F.1 Discrete Inputs (continued) Vertiv™ XDU1350 Register Number Register Description Alarm Code Alarm: Valve 2 Fault Alarm : Primary Fluid Low Flow Alarm : Primary Fluid No Flow Alarm : Primary Fluid Low Temp...
- Page 41 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Table F.1 Discrete Inputs (continued) Vertiv™ XDU1350 Register Number Register Description Alarm Code Alarm : Secondary Fluid Quality – pH Out of Limits Alarm : Secondary Fluid Quality – Conductivity Out of Limits Alarm : Secondary Fluid Quality –...
- Page 42 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Table F.2 Input Registers (continued) Register Number Description Units Scaling Data Type Secondary Supply Temperature T2b °C Signed Secondary Supply Temperature T2c °C Signed Secondary Supply Temperature T2 °C Signed Room Temperature T3 °C...
- Page 43 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Table F.2 Input Registers (continued) Register Number Description Units Scaling Data Type Format is x.yy where x means major version number, yy means minor version number Controller Up-time Mins Unsigned System (Group) Average secondary Differential Pressure 0.01...
- Page 44 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Table F.5 Holding Registers Register Number Description Units Scaling Data Type Secondary Temperature Setpoint (P301) °C unsigned Secondary DP Setpoint (P203) unsigned Secondary Flow Setpoint (P202) unsigned By default, the holding register table is read-only. Read-write access may be enabled via the P072 Write Access parameter, accessible via the touchscreen UI.
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Page 45: Appendix G: Vertiv™ Xdu1350 Bacnet Object List
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Appendix G: Vertiv™ XDU1350 BACnet Object List G.1 Binary Values Table G.1 Binary Values Instance Number Object Name Access Critical Alarm Non-critical Alarm Alarm A01: T1 Temperature Sensor Fault Alarm A02: T2a Temperature Sensor Fault... - Page 46 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Table G.1 Binary Values (continued) Instance Number Object Name Access Alarm A28: Valve 1 Fault Alarm A29: Valve 2 Fault Alarm A30: Primary Fluid Low Flow Alarm A31: Primary Fluid No Flow...
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Page 47: Multi-State Values
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Table G.1 Binary Values (continued) Instance Number Object Name Access Alarm A60: Secondary Fluid Quality – Turbidity Sensor Fault Alarm A61: Secondary Fluid Quality – PH Out of Limits Alarm A62: Secondary Fluid Quality – Conductivity Out of Limits Alarm A63: Secondary Fluid Quality –... -
Page 48: Analogue Values
Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide G.3 Analogue Values NOTE: Units of measurement (SI or Imperial) are configurable via Setup->MODBUS and BACnet->BACnet->P079 Units. NOTE: Access: RO is Read-Only, RW is Read-Write. Table G.3 Analogue Values Instance Number... - Page 49 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide Table G.3 Analogue Values (continued) Instance Number Object Name Units Access Secondary Flow Rate lpm/US gpm Secondary Duty Primary Duty Temperature Setpoint °C/°F Secondary Filter 1 Inlet Pressure PS5a bar/psi Secondary Filter 2 Inlet Pressure PS5b...
- Page 50 Vertiv™ XDU1350 Coolant Distribution Unit Application and Planning Guide This page intentionally left blank Proprietary and Confidential ©2025 Vertiv Group Corp.
- Page 52 Vertiv.com | Vertiv Headquarters, 505 N Cleveland Ave, Westerville, OH 43082 USA ©2025 Vertiv Group Corp. All rights reserved. Vertiv™ and the Vertiv logo are trademarks or registered trademarks of Vertiv Group Corp. All other names and logos referred to are trade names, trademarks or registered trademarks of their respective owners. While every precaution has been taken to ensure accuracy and completeness here, Vertiv Group Corp.
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Questions and answers
Is it possible to have multiple XDU1350 units on the distribution side (secondary side). I do see that you can control up to 8 CDU's in a group, but can you as an example have 3 CDU in a loop that support f.ex up to 12 rack with AI servers (up to 180kW per rack).
Yes, multiple Vertiv XDU1350 units can be used together on the distribution side. They operate in Group Control mode, where units work in parallel, share load demand, synchronize pump speeds, and can rotate duty and standby roles. This setup can support multiple racks, including high-density AI server racks, provided the total cooling capacity of the configured units matches the heat load of the 12 racks.
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