Liebert®
DS™Thermal Management System
Installer/UserGuide
35to 105kW(10 to 30 ton)Capacity,Upflow and Downflow,50 and 60 Hz,Air-cooled,
Water/Glycol-cooled,GLYCOOL™ Economizer Coil,
Dual-Cool DX with Secondary Chilled-water Coil
The information contained in this document is subject to change without notice and may not be suitable for all applications. While every precaution has been taken to ensure the accuracy and completeness of this document, Vertiv assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions. Refer to other local practices or building codes as applicable for the correct methods, tools, and materials to be used in performing procedures not specifically described in this document.
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.
Names of companies and products are trademarks or registered trademarks of the respective companies. Any questions regarding usage of trademark names should be directed to the original manufacturer.
TechnicalSupport Site
If you encounter any installation or operational issues with your product, check the pertinent section of this manual to see if the issue can be resolved by following outlined procedures.
Visit https://www.Vertiv.com/en-us/support/ for additional assistance.
Vertiv | Liebert® DS™ Installer/User Guide
TABLE OF CONTENTS
1 Important Safety Instructions |
1 |
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2 Nomenclature and Components |
9 |
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2.1 Liebert DS Model Number Nomenclature |
9 |
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2.2 Component Location |
11 |
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3Pre-installation Preparation and Guidelines |
13 |
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3.1 Planning Dimensions |
13 |
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3.2 |
Air Distribution Considerations for Downflow Units |
14 |
3.3 |
Air Distribution Considerations for Upflow Units |
16 |
3.4 |
Connections and System Setup |
17 |
3.5 Operating Conditions |
18 |
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3.5.1 Cooling, Humidification and Dehumidification |
18 |
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3.5.2 Heating |
18 |
3.6 |
Shipping Dimensions and Unit Weights |
18 |
4 Equipment Inspection and Handling |
21 |
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4.1 Packaging Material |
21 |
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4.2 Handling the Unit while Packaged |
22 |
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4.3 Unpacking the Unit |
23 |
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4.3.1 Removing the Unit from the Skid witha Forklift |
23 |
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4.3.2 Removing the Unit from the Skid Using Rigging |
24 |
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4.3.3 Moving the Unit to the Installation Location Using Piano Jacks |
26 |
4.4 Remove Shipping Blocks from Units with Semi-Hermetic Compressors |
27 |
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4.5 Placing the Unit ona Floor Stand |
28 |
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5Piping and Refrigerant Requirements |
29 |
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5.1 Drain and Humidifier Fluid Piping |
31 |
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5.1.1 Field-installed, Gravity Fed Drain Line Requirements |
32 |
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5.1.2 Condensate Pump Drain Line Requirements |
34 |
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5.1.3 Water Supply Line Requirements for the Optional Humidifier |
34 |
5.2 |
Refrigerant Piping and Charging |
34 |
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5.2.1 Refrigerant Piping Guidelines for Air Cooled Systems |
35 |
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5.2.2 Refrigerant Line Sizes and Equivalent Lengths |
36 |
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5.2.3 Refrigerant Charge Requirements for Air Cooled Systems |
37 |
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5.2.4 Additional Oil Requirements for Scroll and Digital Scroll Compressors |
39 |
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5.2.5 Evacuation, Leak Testing, and Charging Air Cooled Systems without Liebert Lee-Temp™ Receivers |
42 |
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5.2.6 Evacuation, Leak Testing, and Charging Air Cooled Systems with Liebert Lee-Temp™ “Flooded |
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Condenser” Head Pressure Control System |
46 |
5.3 Refrigerant Charge for Water/Glycol Cooled Systems |
48 |
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5.4 |
Water/Glycol Loop Piping Guidelines |
49 |
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5.4.1 Leak Checking for Unit and Field Installed Piping |
50 |
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6 Electrical Connections |
51 |
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7 EC Fans and Plenums |
53 |
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7.1 Downflow Units with EC Fans |
53 |
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7.1.1 Lowering the EC Fans into the Floor Stand on Downflow Models |
53 |
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7.2 Upflow Unit Plenums with EC Fans |
56 |
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7.2.1 Assembly Inspection |
57 |
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7.2.2 Assemble Plenum Rear and Side Panels |
62 |
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7.2.3 Place Assembled Panels and EC Fans on Top of Unit |
66 |
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7.2.4 |
Wire the EC Fans |
70 |
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7.2.5 |
Install Front Panels on Plenum |
72 |
8 Checklist for Completed Installation |
83 |
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8.1 Moving and Placing Equipment |
83 |
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8.2 |
Electrical Installation Checks |
83 |
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8.3 |
Piping Installation Checks |
83 |
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8.4 |
Other Installation Checks |
83 |
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9 Initial Start up Checks and Commissioning Procedure for Warranty Inspection |
85 |
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10Maintenance |
87 |
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10.1 |
Filters |
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88 |
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10.1.1 Filter Replacement for Downflow Units |
88 |
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10.1.2 |
Filter Replacement for Upflow Units |
89 |
10.2 Blower Drive System—EC Fans |
91 |
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10.2.1 Protective Features |
92 |
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10.2.2 Fan Impellers and Bearings Maintenance |
92 |
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10.2.3 Fan Assembly Troubleshooting |
92 |
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10.2.4 Removing EC Fans from Downflow Units |
96 |
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10.2.5 Removing EC Fans from Upflow Units |
100 |
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10.3 Blower Drive System—Forward Curved Blowers |
103 |
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10.3.1 Upflow Motor Access |
104 |
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10.3.2 |
Belt Removal |
104 |
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10.3.3 |
Belt Installation and Tensioning |
105 |
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10.3.4 |
Blower Bearing Maintenance |
106 |
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10.3.5 |
Blower Bearing Inspection |
106 |
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10.3.6 |
Blower Bearing Replacement |
106 |
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10.3.7 |
Blower Motor |
106 |
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10.3.8 Blower Motor Lubrication |
106 |
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10.3.9 |
Blower Wheel |
106 |
10.4 |
Infrared Humidifier Maintenance |
107 |
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10.4.1 Cleaning Humidifier Pan and Float Switch |
107 |
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10.4.2 Changing Humidifier Lamps |
108 |
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10.5 Condensate Drain and Condensate Pump System Maintenance |
109 |
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10.5.1 Condensate Drain |
109 |
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10.5.2 Condensate Pump |
109 |
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10.6 |
Air Cooled Condenser and Drycooler Maintenance |
110 |
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10.7 |
Electric Reheat Maintenance |
110 |
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10.8 Thermostatic Expansion Valve (TXV) Maintenance |
110 |
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10.8.1 Determining Suction Superheat |
110 |
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10.8.2 |
Adjusting Superheat Setting with the TXV |
110 |
10.9 |
Compressor Maintenance |
111 |
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10.9.1 Compressor Oil |
111 |
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10.9.2 |
Scroll and Digital Scroll Compressor Maintenance |
111 |
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10.9.3 Semi-Hermetic Compressor Maintenance |
112 |
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10.9.4 |
Replacement Compressors |
112 |
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10.9.5 |
Rotalock Valve on Scroll and Digital-Scroll Compressors |
112 |
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10.9.6 |
Unloading Solenoids on a Digital Scroll Compressor |
113 |
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10.9.7 |
Compressor Electrical Failure (Motor Burnout) |
113 |
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10.9.8 Replacing a Compressor withElectrical Failure (Motor Burnout) |
114 |
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10.9.9 |
Compressor Mechanical Failure |
115 |
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10.9.10 Replacing a Compressor withMechanical Failure |
115 |
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10.10 Motorized Ball Valve (MBV) Maintenance (Digital Scroll Compressors) |
115 |
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10.10.1 MBV Control |
116 |
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10.10.2 MBV Control Method |
116 |
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10.10.3 MBV Adjustment |
116 |
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10.10.4 |
MBV Start-up |
116 |
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10.10.5 MBV Location |
116 |
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10.10.6 |
MBV Manual Control |
116 |
10.11 Facility Fluid and Piping Maintenance for Water and Glycol Systems |
116 |
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10.12 |
Glycol Solution Maintenance |
117 |
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10.13 Paradenser™—Water Cooled Condenser Maintenance |
117 |
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10.13.1 Cleaning the Paradenser |
117 |
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10.13.2 Water Regulating Valves Maintenance for Semi-Hermetic and Standard Scroll Compressors |
118 |
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10.14 |
Drycooler Aquastat Settings |
119 |
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11 Preventive Maintenance Checklist |
121 |
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Appendices |
127 |
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Appendix A: Technical Support and Contacts |
127 |
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Appendix B: Disassembling the DS for Transport |
129 |
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Appendix C: Submittal Drawings |
139 |
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Vertiv | Liebert® DS™ Installer/User Guide |
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SAVE THESE INSTRUCTIONS
This manual contains important safety instructions that should be followed during the installation and maintenance of the Liebert® DS. Read this manual thoroughly before attempting to install or operate this unit.
Only qualified personnel should move, install or service this equipment.
Adhere to all warnings, cautions, notices and installation, operating and safety instructions onthe unit and inthis manual. Follow all installation, operation and maintenance instructions and all applicable national and local building, electrical and plumbing codes.
WARNING! Arc flash and electric shock hazard. Open all local and remote electric power-supply disconnect switches, verify with a voltmeter that power is Off and wear appropriate, OSHA-approved personal protective equipment (PPE) per NFPA 70E before working within the electric control enclosure. Failure to comply can cause serious injury or death. Customer must provide earth ground to unit, per NEC, CEC and local codes, as applicable. Before proceeding with installation, read all instructions, verify that all the parts are included and check the nameplate to be sure the voltage matches available utility power. The Liebert® controller does not isolate power from the unit, even in the “Unit Off” mode. Some internal components require and receive power even during the “Unit Off” mode of the controller. The factory-supplied, optional disconnect switch is inside the unit. The line side of this switch contains live high-voltage. The only way to ensure that there is NO voltage inside the unit is to install and open a remote disconnect switch. Refer to unit electrical schematic. Follow all local codes.
WARNING! Risk of electric shock. Can cause equipment damage, injury or death. Open all local and remote electric power supply disconnect switches and verify with a voltmeter that power is off before working within any electric connection enclosures. Service and maintenance work must be performed only by properly trained and qualified personnel and in accordance with applicable regulations and manufacturers’ specifications. Opening or removing the covers to any equipment may expose personnel to lethal voltages within the unit even when it is apparently not operating and the input wiring is disconnected from the electrical source.
WARNING! Risk of electric shock. Can cause serious injury or death. The Liebert® iCOM microprocessor does not isolate power from the unit, even in the "Unit Off" mode. Some internal components require and receive power even during the "unit off" mode of the Liebert® iCOM control. Open all local and remote electric power disconnect switches and verify with a voltmeter that power is Off before working on any component of the system.
WARNING! Risk of electric shock. Can cause serious injury or death. Open all local and remote electric power supply disconnect switches and verify with a voltmeter that power is off before working within the fan-motor electric-connection enclosures. Fan-motor controls can maintain an electric charge for 10 minutes after power is disconnected. Wait 10 minutes after power is verified as off before working within the electric control/connection enclosures. Use only fully-trained and qualified HVAC technicians to perform maintenance on the fans.
1 Important Safety Instructions |
1 |
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WARNING! Risk of electric shock. Can cause injury or death. Open all local and remote electric power-supply disconnect switches and verify that power is Off with a voltmeter before working within the condensate pump electrical connection enclosure. The Liebert® iCOM™ does not isolate power from the unit, even in the “Unit Off” mode. Some internal components require and receive power even during the “Unit Off” mode of the Liebert® iCOM.
WARNING! Riskof electric shock. Can cause serious injuryor death. The Liebert®iCOM microprocessor does notisolate power from the unit, even in the "UnitOff" mode. Some internal components require and receive power even during the "unitoff" mode of the Liebert®iCOM control. Open all local and remote electric power disconnectswitches and verifywith a voltmeter thatpower is Off before working on anycomponentof the system.
WARNING! Riskof over-pressurization of the refrigeration system. Can cause explosive discharge of highpressure refrigerant, loss of refrigerant, environmental pollution, equipmentdamage, injury, or death. This unitcontains fluids and gases under high pressure. Use extreme caution when charging the refrigerant system. Donotpressurize the system higher than the design pressure marked on the unit's nameplate. For systems requiring EU CE compliance (50 Hz), the system installer mustprovide and install a pressure relief valve in the high side refrigerantcircuitthatis rated same as the refrigeranthigh side “Max Allowable Pressure” rating thatis marked on the unitserial tag. Donotinstall a shutoff valve between the compressor and the field installed relief valve. The pressure relief valve mustbe CE-certified tothe EU Pressure EquipmentDirective byan EU “Notified Body.”
WARNING! Riskof veryheavy125-lb (56.7-kg) fan modules dropping downward suddenly. Can cause injuryor death.
Supportfan modules before removing mounting hardware. Use caution tokeep bodyparts outof the fan modules pathwayduring repositioning. Onlyproperlytrained and qualified personnel should workon this equipment.
WARNING! Riskof improper moving. Can cause equipmentdamage, injuryor death. Use onlylifting equipmentthatis rated for the unitweightbyan OSHA-certified rating organization. The center of gravity varies depending on the unitsize and selected options. The slings mustbe equallyspaced on either side of the center of gravityindicator. Shipping weights and unitweights are listed in the tables in Table 2.3 on page 18. Use the center of gravityindicators on the unittodetermine the position of the slings.
WARNING! Riskof improper piping installation, leakchecking, fluid chemistryand fluid maintenance can cause equipmentdamage and personal injury. Installation and service of this equipmentshould be done only byqualified personnel whohave been specially-trained in the installation of air-conditioning equipmentand whoare wearing appropriate, OSHA-approved PPE.
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Vertiv | Liebert® DS™ Installer/User Guide |
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WARNING! Risk of contact with high-speed rotating fan blades. Can cause serious injury or death. Open all local and remote electric power-supply disconnect switches, verify with a voltmeter that power is off, and verify that all fan blades have stopped rotating before working in the unit cabinet or on the fan assembly. If control voltage is applied, the fan motor can restart without warning after a power failure. Do not operate the unit with any or all cabinet panels removed. Do not operate upflow units without installing a plenum, duct work or guard over the blower opening(s) on the top surface of the unit cabinet. Ductwork must be connected to the blower(s), or a plenum must be installed on the blower deck for protection from rotating blower wheel(s) on upflow units.
WARNING! Risk of top-heavy unit falling over. Improper handling can cause equipment damage, injury or death. Read all of the following instructions and verify that all lifting and moving equipment is rated for the weight of the unit before attempting to move, lift, remove packaging from or prepare the unit for installation. Unit weights are specified in Table 2.3 on page 18
WARNING! Riskof improper wiring, piping, moving, lifting and handling. Can cause equipmentdamage, serious injuryor death. Installation and service of this equipmentshould be done onlybyqualified personnel whohave been specially-trained in the installation of air-conditioning equipmentand whoare wearing appropriate, OSHA-approved PPE.
WARNING! Riskof improper wire sizing/rating and loose electrical connections. Can cause overheated wire and electrical connection terminals resulting in smoke, fire, equipmentand building damage, injuryor death. Use correctlysized copper wire onlyand verifythatall electrical connections are tightbefore turning power On. Checkall electrical connections periodicallyand tighten as necessary.
WARNING! Riskimproper drive-beltremoval. Can cause the spring-loaded motor base toslam down suddenly causing serious injurytohands and fingers from crushing and pinching. Read the directions in this manual and on the unitinstruction labels, keep hands and fingers awayfrom pinch points, and wear appropriate, OSHA-approved PPE when performing maintenance on the belts, motors or pulleys. Follow all directions when servicing the unit.
WARNING! Riskof explosive discharge of high-pressure refrigerant. Can cause serious injury. Neutral and service ports on the rotalockvalve donothave a valve core. Front-seatthe service valves and relieve pressure from the compressor before loosening a partor a componentattached tothe service valve. Follow local codes toproperlyreclaim refrigerant.
CAUTION: Riskof excessive refrigerantline pressure. Can cause tubing and componentrupture resulting in equipmentdamage and personal injury. Donotclose off the refrigerant-line isolation valve for repairs unless a pressure-relief valve is fieldinstalled in the line between the isolation valve and the checkvalve. The pressure-relief valve mustbe rated 5% to10% higher than the system-design pressure. An increase in ambienttemperature can cause the pressure of the isolated refrigeranttorise and exceed the system-design pressure rating (marked on the unitnameplate).
1 Important Safety Instructions |
3 |
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CAUTION: Risk of improper moving, lifting and handling. Can cause equipment damage or injury. Only properly trained and qualified personnel should work on this equipment. Evaporator fan modules weigh in excess of 125-lb (56.7-kg). Use proper lifting techniques and wear appropriate, OSHA-approved PPE to avoid injury and dropping the fan module during removal. Equipment used in handling/lifting, and/or installing the fan assembly must meet OSHA requirements. Use handling/lifting equipment rated for the weight of the fan assembly. Use ladders rated for the weight of the fan assembly and technicians if used during installation. Refer to handling/lifting, and/or installation equipment operating manual for manufacturer's safety requirements and operating procedures.
CAUTION: Risk of improper moving, lifting and handling. Can cause equipment damage or injury. Only properly trained and qualified personnel should work on this equipment. Condenser fan modules weigh in excess of 125-lb (56.7-kg). Use proper lifting techniques and wear appropriate, OSHA-approved PPE to avoid injury and dropping the fan module during removal. Equipment used in handling/lifting, and/or installing the fan assembly must meet OSHA requirements. Use handling/lifting equipment rated for the weight of the fan assembly. Use ladders rated for the weight of the fan assembly and technicians if used during installation. Refer to handling/lifting, and/or installation equipment operating manual for manufacturer's safety requirements and operating procedures.
CAUTION: Risk of contact with sharp edges, splinters, and exposed fasteners. Can cause injury. Only properly trained and qualified personnel wearing appropriate, OSHA-approved PPE should attempt to move, lift, remove packaging from or prepare the unit for installation.
CAUTION: Risk of contact with hot surfaces. Can cause injury. The electronics housing, humidifier components, compressor, refrigerant discharge lines, fan motor, and some electrical components are extremely hot during unit operation. Allow sufficient time for them to cool to a touch-safe temperature before working within the unit cabinet. Use extreme caution and wear appropriate, OSHA-approved PPE when working on or near hot components.
CAUTION: Risk of contact with extremely hot water and part surfaces. Can cause burn injury. The infrared humidifier bulbs, metal enclosure, humidifier water, water reservoir pan and drain tubing are very hot during and shortly after operation. Allow sufficient time for these parts to cool to a touch-safe temperature before handling. Use extreme caution, and wear appropriate, OSHA-approved PPE when performing maintenance on the infrared humidifier.
CAUTION: Risk of handling heavy and lengthy parts. Can cause personal injury and equipment damage. Cabinet panels can exceed 5 ft. (1.5 m) in length and weigh more than 35 lb. (15.9 kg). Follow relevant OSHA lifting recommendations and consider using a two-person lift for safe and comfortable removal and installation of cabinet panels. Only properly trained and qualified personnel wearing appropriate, OSHAapproved PPE should attempt to remove or install cabinet panels.
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Vertiv | Liebert® DS™ Installer/User Guide |
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CAUTION: Risk of handling heavy unit and component parts. Can cause injury and equipment damage. Use OSHA-recommended safe lifting techniques and/or lifting equipment rated for the weight of the unit.
CAUTION: Risk of smoke generation. Can cause fire suppression and alarm system activation, resulting in injury during building evacuation and mobilization of emergency fire and rescue services. Start-up operation of optional electric reheat elements can create smoke or fumes that can activate the facility alarm and fire suppression system. Prepare and take appropriate steps to manage this possibility. Activating reheat during initial start-up may burn off particulates from electric reheat elements. Before beginning initial start-up checks, make certain that unit was installed according to the instructions in this manual. All exterior panels must be in place.
CAUTION: Risk of exposure to harmful noise levels. Can cause hearing injury or loss. Depending on the installation and operating conditions, a sound pressure level greater than 70 dB(A) mayarise. Take appropriate technical safetymeasures. Operating personnel mustwear appropriate, OSHA-approved PPE and observe all appropriate hearing-protection safetyrequirements.
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: back-up generator systems) for start-up, commissioning, testing, or normal operation, ensure that these sources are correctly adjusted to the nameplate voltage and frequency of all equipment to be connected. In general, power-source voltages should be stabilized and regulated to within ±10% of the load nameplate nominal voltage. Also, ensure that no three-phase sources are single-phased at any time.
NOTICE
Risk of oil contamination with water. Can cause equipment damage.
Liebert® DS systems require the use ofPOE (polyolester) oil. POE oil absorbs water at a much faster rate when exposed to air thanpreviously used oils. Because water is the enemy ofa reliable refrigeration system, extreme care must be used when opening systems during installation or service. Ifwater is absorbed into the POE oil, it will not be easily removed and will not be removed through the normal evacuation process. Ifthe oil is too wet, it may require anoil change. POE oils also have a property that makes them act as a solvent ina refrigeration system. Maintaining system cleanliness is extremely important because the oil will tend to bring any foreign matter back to the compressor.
NOTICE
Risk ofimproper refrigerant charging. Cancause equipment damage.
Refrigerant charge must be weighed into air-cooled compressorized systems before they are started. Starting scroll and digital scroll compressors without proper refrigerant charging cancause the compressors to operate at less than5°F (–15°C) evaporator temperature and at less than20 psig (138 kPa). Operation for extended periods at less than20 psig (138 kPa) cancause premature compressor failure.
1 Important Safety Instructions |
5 |
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NOTICE
Risk of clogged or leaking drain lines and leaking water-supply lines. Can cause equipment and building damage.
This unit requires a water drain connection. Drain lines must be inspected at start-up and periodically, and maintenance must be performed to ensure that drain water runs freely through the drain system and that lines are clear and free of obstructions and in good condition with no visible sign of damage or leaks. This unit may also require an external water supply to operate.
Improper installation, application and service practices can result in water leakage from the unit. Water leakage can result in catastrophic and expensive building and equipment damage and loss of critical data center equipment.
Do not locate unit directly above any equipment that could sustain water damage.
We recommend installing a monitored fluid-detection system to immediately discover and report coolant-fluid system and condensate drain-line leaks.
NOTICE
Risk of piping-system corrosion and freezing fluids. Can cause leaks resulting in equipment and expensive building damage. Cooling coils, heat exchangers and piping systems are at high risk of freezing and premature corrosion. Fluids in these systems must contain an inhibitor to prevent premature corrosion.
The system coolant fluid must be analyzed by a competent fluid-treatment specialist before start up to establish the inhibitor level and evaluated at regularly scheduled intervals throughout the life of the system to determine the pattern of inhibitor depletion. The fluid complexity and variations of required treatment programs make it extremely important to obtain the advice of a competent and experienced fluid-treatment specialist and follow a regularly scheduled coolant-fluid system-maintenance program.
Fluid chemistry varies greatly as do the required additives, called inhibitors, that reduce the corrosive effect of the fluids on the piping systems and components.
The chemistry of the coolant fluid used must be considered, because some sources may contain corrosive elements that reduce the effectiveness of the inhibited formulation. Sediment deposits prevent the formation of a protective oxide layer on the inside of the coolant system components and piping. The coolant fluid must be treated and circulating through the system continuously to prevent the buildup of deposits and/or growth of bacteria. Proper inhibitor maintenance must be performed to prevent corrosion of the system.
Consult fluid manufacturer for testing and maintenance of inhibitors.
Commercial-grade coolant fluid is generally less corrosive to the common metals of construction than water itself. It will, however, assume the corrosivity of the coolant fluid from which it is prepared and may become increasingly corrosive with use if not properly inhibited.
Vertiv recommends installing a monitored fluid-detection system that is wired to activate the automaticclosure 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. The shut-off valves must be sized to close-off against the maximum coolant-fluid system pressure in case of a catastrophic fluid leak.
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Vertiv | Liebert® DS™ Installer/User Guide |
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NOTICE
Risk of frozen pipes and corrosion from improper coolant mixture. Can cause water leaks resulting in equipment and building damage.
When the cooling unit or piping may be exposed to freezing temperatures, charge the system with the proper percentage of glycol and water for the coldest design ambient temperature. Automotive antifreeze is unacceptable and must NOT be used in any glycol fluid system. Use only HVAC glycol solution that meets the requirements of recommended industry practices. Do not use galvanized pipe.
NOTICE
Risk of a catastrophic water circuit rupture. Can cause expensive building and equipment damage.
Install an overflow drain pan under the unit with a monitored leak detection system in the pan and shutoff valves in the supply and return water lines that automatically close if water is detected by the leak detection system. The shutoff valves should be spring return and must be rated for a close-off pressure that is the same as or higher than the supply water pressure. If it is not possible to install an overflow drain pan, then a monitored leak detection system should be installed in the base of the unit or under the unit to actuate the shutoff valves immediately on a leak detection signal.
The overflow drain pan should have a drain line connected to it that flows to a floor drain or maintenance sink in case of a shutoff valve or leak detection system malfunction.
NOTICE
Risk of no-flow condition. Can cause equipment damage. Do not leave the water/coolant fluid-supply circuit in a no-flow condition. Idle fluid allows the collection of sediment that prevents the formation of a protective oxide layer on the inside of tubes. Keep unit switched On and water/coolant fluid-supply circuit system operating continuously.
NOTICE
Risk of improper water supply. Can reduce humidifier efficiency or obstruct humidifier plumbing.
Do not use a hot water source. It will cause deposits that will eventually block the fill-valve opening.
NOTICE
Risk of water backing up in the drain line. Leaking and overflowing water can cause equipment and building damage.
Do not install an external trap in the drain line. This line already has a factory-installed trap inside the cabinet. Installation of a second trap will prevent drain-water flow and will cause the water to overflow the drain pan.
Sagging condensate drain lines may inadvertently create an external trap.
NOTICE
Risk of doorway/hallway interference. Can cause unit and/or structure damage. The unit may be too large to fit through a doorway or hallway while on the skid. Measure the unit and passageway dimensions, and refer to the installation plans prior to moving the unit to verify clearances.
1 Important Safety Instructions |
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NOTICE
Risk of damage from forklift. Can cause unit damage. Keep tines of the forklift level and at a height suitable to fit below the skid and/or unit to prevent exterior and/or underside damage.
NOTICE
Risk of improper storage. Can cause unit damage.
Keep the unit upright, indoors and protected from dampness, freezing temperatures and contact damage.
NOTE: The Liebert® indoor cooling unit has a factory-installed, high-pressure safety switch in the high-side refrigerant circuit. Each refrigerant receiver contains a fusible plug for fire-safety purposes. Consult your local building code to determine whether the refrigerant piping will require additional, field-provided pressure-relief devices.
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Vertiv | Liebert® DS™ Installer/User Guide |
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This section describes the model number for Liebert® DS units and components.
2.1 |
Liebert DS Model Number Nomenclature |
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Table 1.2 below describes each digit of the model number. |
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Table 1.1 DS Model Number Example |
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Table 1.2 DS Model Number Digit Definitions |
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Digit |
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Description |
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Digits1 and2 = AirflowDistribution |
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DS= Downflowstandard |
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VS= Upflowstandard |
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Digit3, 4, 5 = Nominal CoolingCapacity, kW |
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035 = 35 kW, 10 ton |
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042 = 42 kW, 12 ton |
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053 = 53 kW, 15 ton |
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070 = 70 kW, 20 ton |
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077 = 77 kW, 22 ton |
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105 = 105 kW, 30 ton |
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Digit6= CoolingType |
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A= Air-cooled |
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D= Dual-cool, air-cooled |
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H = Dual-cool, water-cooled |
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K = GLYCOOL™ (Liebert®EconomizerCoil) |
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W = Water/Glycol-cooled |
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Digit7 = CompressorType |
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D= Digital scroll, R-407C |
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S= Scroll, R-407C |
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U= Semi-hermetic with 4-step, R-407C |
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V = Semi-hermetic with 4-step, R-407C |
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(DS105 water/glycol/GLYCOOL-only) |
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2 Nomenclature and Components |
9 |
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Table 1.2 DS Model Number Digit Definitions (continued)
Digit |
Description |
Digit8 = Voltage
A= 460 V -3 ph -60 Hz B = 575 V-3 ph -60 Hz C= 208 V -3 ph -60 Hz D= 230 V -3 ph -60 Hz 2 = 380 V -3 ph -60 Hz
Digit9= FanType
0 = Forward-curvedblowers
1 = Electronically-commutated(EC)fans
Digit10 = ReheatType
0 = None
E= 3-stage electric
Digit11 = Humidifier
0 = Nohumidifier
I= InfraredHumidifier
Digit12-15 = Factory ConfigurationNumber
Not all combinations of options are available on all units:
•Digital Scroll Compressors
•Not available on VS042A with forward-curved blower
•Not available on 077 and 105 models
•575-V available only on 035, 053 and 070 models
•Scroll Compressors
•Available onair cooled models 035 – 105
•Available onwater/glycol models 035 – 070
•Scroll compressors not available on77and 105-kW models for water/glycol/GLYCOOL/Dual Cool units
•GLYCOOL Liebert® Econ-O-Coil™ Models
•Available withdigital-scroll compressors on035 to 070 models, and withsemi-hermetic compressors on 077 to 105 models
•High Pressure Water Regulating Valve
•Not available on042, 053, 070 and 077 models withsemi-hermetic and scroll compressors
10 |
Vertiv | Liebert® DS™ Installer/User Guide |
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The unit component locations are described in the submittal documents included in the Submittal Drawings onpage 139 The following table lists the relevant documents by number and title.
Table 1.3 Component-location Drawings
Document Number |
Title |
DPN003706 |
ComponentLocation, DownflowModels |
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DPN003707 |
ComponentLocation, UpflowModels |
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2 Nomenclature and Components |
11 |
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This page intentionally left blank
12 |
Vertiv | Liebert® DS™ Installer/User Guide |
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3PRE-INSTALLATION PREPARATION AND GUIDELINES
NOTE: Before installing unit, determine whether any building alterations are required to run piping, wiring and duct work. Follow all unit dimensional drawings and refer to the submittal engineering dimensional drawings of individual units for proper clearances.
Refer to DS Model Number Digit Definitions onpage 9, and submittal drawings to determine the type ofsystem being installed and anticipate building alterations, piping and duct work needed.
The unit dimensions, pipe-connection locations, and piping schematics are described inthe submittal documents included inthe Submittal Drawings onpage 139.
•Verify that the floor is level, solid and sufficient to support the unit. See Liebert DS Downflow Unit weights and Shipping Weights—Approximate onpage 18 for unit weights.
•Confirm that the room is properly insulated and has a sealed vapor barrier.
•For proper humidity control, keep outside or fresh air to anabsolute minimum (less than5% oftotal air circulated inthe room).
•Do not install a Liebert® DS inanalcove or at the end ofa long, narrow room.
•Install the units as close as possible to the largest heat load.
•Allow at least the minimum recommended clearances for maintenance and service. See the appropriate submittal drawings for dimensions.
•We recommend installing anunder-floor water detection system. Contact your Vertiv representative for information.
The unit, floor stand, and plenum dimensions are described inthe submittal documents included inthe Submittal Drawings onpage 139.
The following table lists the relevant documents by number and title.
Table 2.1 Dimension Planning Drawings
Document Number |
Title |
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DownflowUnits |
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DPN003643 |
CabinetDimensional Data, 35 to 105 kW (10 to 30 Tons)All BlowerTypes |
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UpflowUnits |
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DPN003681 |
CabinetDimensional Data Upflow35-105kW (10-30 Tons)Modelswith EC Fans |
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DPN003646 |
CabinetDimensional Data Upflow35 to 105 kW (10-30 Tons)with ForwardCurvedBlower |
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FloorStands |
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DPN003240 |
FloorStandDimensional Data 35kW -42kW (10-12 Tons)with EC Fans |
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DPN003173 |
FloorStandDimensional Dta 53kW -77 kW (15-22 Tons)with EC Fans |
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DPN003174 |
FloorStandDimensional Data 105 kW (30 Tons)Modelswith EC Fans |
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DPN003134 |
FloorStandandFloorPlanningDimensional Data Upflow35-42 kW (10-12 Tons)Modelswith Forward |
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3Pre-installation Preparation and Guidelines |
13 |
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Table 2.1 Dimension Planning Drawings (continued)
Document Number |
Title |
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DPN003141 |
FloorStandandFloorPlanningDimensional Data Upflow53-77 kW (15-22 Tons)Modelswith Forward |
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CurvedBlowers |
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DPN003149 |
FloorStandandFloorPlanningDimensional Data Upflow105kW (30 Tons)Modelswith ForwardCurved |
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BlowerOutlet, Deck andFilterBox |
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DPN001120 |
BlowerOutletandDeck Dimensional Data Upflow35-42 kW (10-12 Tons)with ForwardCurvedBlowers |
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DPN001191 |
BlowerOutletandDeck Dimensional Data Upflow53-77kW (15-22)Tonswith ForwardCurvedBlowers |
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DPN001192 |
BlowerOutletandDeck Dimensional Data Upflow105kW (30 Tons)with ForwardCurvedBlowers |
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DPN001196 |
RearReturn FilterBox Dimensional Data Upflow35-105kW (10-30 Tons)All CompressorModelswith |
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DPN003974 |
RearReturn FilterBox Dimensional Data Upflow35-105kW (10-30 Tons)with EC FansAll Compressor |
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DPN003164 |
UpflowPlenum Dimensional Data 35kW-105kW (10-30 Tons)Modelswith FowardCurvedBlowers |
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DPN003458 |
Plenum Dimensional Data Upflow35-42kW (10-12 Tons)Modelswith EC Fans |
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DPN003453 |
Plenum Dimensional Data Upflow53-77kW (15-22 Tons)with EC Fans |
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DPN003459 |
Plenum Dimensional Data Upflow105kW (30 Tons)Modelswith EC Fans |
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•Verify that the raised floor has been properly sized for the unit’s airflow and the room is free of airflow restrictions.
•Perforated floor tiles in the raised floor should ensure minimal pressure loss.
•The raised floor must provide 7-1/2 in. (191 mm) ofclearance.
•A minimum of24 in. (610 mm) is required to operate the fans when they are lowered withthe factory-provided jacking mechanism.
•Ensure that there is adequate clearance above the unit for service, suchas replacing filters.
•Optional plenums are available for downflow unit ducting.
14 |
Vertiv | Liebert® DS™ Installer/User Guide |
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Figure 2.1 Downflow Unit Ducting and Plenum Ducting
Item Description
1Field-fabricatedductwork.
Fieldservice accessforfilterreplacement.
2Minimum height= 12 in. (305 mm) Minimum distance from unit= 2 in. (51 mm)
3OptionalLiebert®plenum withservice-accessdoorforfilterreplacement.
4Direct-to-unitducting
5Plenum ducting
3Pre-installation Preparation and Guidelines |
15 |
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Various configurations are available:
•Front return
•Rear return
•Top-front supply (forward-curved blowers)
•Top-rear supply (forward-curved blowers)
•Top, rear, and front supply with plenum (EC fans)
For in-room applications with supply and return grilles, several feet of clearance must be maintained at the intake and discharge of the unit.
Upflow rear-return configurations use a filter box attached to the back ofthe unit. Allow 25 in. (635 mm) onone side ofthe unit for access to the rear-return filter box. Refer to the rear-return installation sheet, inside the rear-return filter box package.
Figure 2.2 Upflow Ducting Configurations (Forward Curved Blowers)
Item Description
1Typical ducting
2Straightsectionsmustbe 1.5 to 2.5 timesthe longestblowerdimension.
3Frontof unit
NOTE: Drain traps are qualified toa return ductstatic of negative 1.5i.w.g. (-1.5 i.w.g).
16 |
Vertiv | Liebert® DS™ Installer/User Guide |
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Figure 2.3 Upflow Ducting Configurations for EC Fans
Item Description
1Typical ducting. May run to eitherside.
2Straightsectionmustbe 2.5 timesthe depth of blower.
3Ductingonly attachedtoflangeson providedplenum.
NOTE: Follow standard practices in all duct work.
•Three-phase electrical service is required for all models. Electrical service must conform to national and local electrical codes. See equipment nameplate for details.
•The unit requires a drain, which must comply with all applicable codes. See Field-installed, Gravity Fed Drain Line Requirements onpage 32, for details.
•Planthe routing ofwiring, piping and duct work to the unit. Refer to the appropriate piping connection location drawings, piping schematics, and electrical-connection drawings for your system in Submittal Drawings on page 139.
•Water/glycol and GLYCOOL units utilizing a drycooler may require anoptional aquastat setting. See Table 9.7
onpage 119, and Table 9.8 onpage 119, through Table 9.10 onpage 120, for drycooler aquastat setting guidelines. Applications withthe optional stat setting require field piping to be insulated to prevent condensation.
•Ifseismic requirements apply, consult your Vertiv representative for information about a seismic-rated floor stand.
NOTE: Seal openings around piping and electrical connection to prevent air leakage. Failure to do so could reduce the unit’s cooling performance.
3Pre-installation Preparation and Guidelines |
17 |
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The Liebert® DS must be operated in a conditioned space within the operating envelope that ASHRAE recommends for data centers. Operating the DS outside of this envelope can decrease equipment reliability. Refer to ASHRAE’s publication, “Thermal Guidelines for Data Processing Environments.”
3.5.1 Cooling, Humidificationand Dehumidification
Return air to the unit must be no cooler than the ASHRAE recommendation of 68°F (20°C) DB and 40% RH or minimum WB of 54°F (12.2°C) for proper unit operation. Operating below this can decrease equipment reliability.
The Liebert® DS is qualified for heating-only operation at temperatures not exceeding 80°F (27°C).
Table 2.2 Liebert DS Shipping Dimensions—Domestic and Export
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035/042 |
053/070/077 |
105 |
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Cooling Type |
Compressor Type |
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LxWxH, in. (mm) |
LxWxH, in. (mm) |
LxWxH, in. (mm) |
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Air, Dual-Cool Air |
Scroll orDigital- |
90x42x82 |
102x42x82 |
136x42x82 |
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scroll |
(2286x1067x2083) |
(2591x1067x2083 |
(3454x1067x2083) |
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Air, Dual-Cool Air |
Semi-hermetic |
— |
114x42x82 |
136x42x82 |
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(3454x1067x2083) |
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Water/Glycol, GLYCOOL/Dual-Cool |
Scroll orDigital- |
90x42x82 |
114x42x82 |
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Water |
scroll |
(2286x1067x2083) |
(2896x1067x2083) |
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Water/Glycol, GLYCOOL/Dual-Cool |
Semi-hermetic |
— |
114x42x82 |
136x42x82 |
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(2896x1067x2083) |
(3454x1067x2083) |
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Table 2.3 Liebert DS Downflow Unit weights and Shipping Weights—Approximate
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Downflow |
Downflow Shipping Weights, lb (kg) |
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Model Number |
Compressor Type |
Cooling Type |
EC Fan Unit Weight, lb (kg) |
Domestic, lb (kg) |
Export, lb (kg) |
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Air-cooled |
1470 (668) |
1608 (730) |
1778 (807) |
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Dual Cool Air |
1620 (736) |
1758 (798) |
1928 (875) |
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DS035-042 |
Scroll orDigital-scroll |
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Water/Glycol |
1780 (809) |
1918 (870) |
2088 (948) |
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GLYCOOL/Dual Cool Water |
1930 (877) |
2068 (939) |
2238 |
(1016) |
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Air-cooled |
1920 (871) |
2070 (939) |
2260 |
(1026) |
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Dual Cool Air |
2100 (953) |
2250 (1021) |
2440 |
(1107) |
DS053 |
Scroll orDigital-scroll |
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Water/Glycol |
2220 (1010) |
2382 (1081) |
2582 |
(1172) |
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GLYCOOL/Dual Cool Water |
2400 (1091) |
2562 (1163) |
2762 |
(1253) |
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18 |
Vertiv | Liebert® DS™ Installer/User Guide |
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Table 2.3 Liebert DS Downflow Unit weights and Shipping Weights—Approximate (continued)
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Downflow |
Downflow Shipping Weights, lb (kg) |
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Model Number |
Compressor Type |
Cooling Type |
EC Fan Unit Weight, lb (kg) |
Domestic, lb (kg) |
Export, lb (kg) |
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Air-cooled |
1970 (894) |
2120 (962) |
2310 |
(1048) |
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Dual Cool Air |
2150 (975) |
2300 (1044) |
2490 (1130) |
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DS070 |
Scroll orDigital-scroll |
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Water/Glycol |
2270 |
(1032) |
2432 |
(1104) |
2632 (1194) |
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GLYCOOL/Dual Cool Water |
2450 (1114) |
2612 |
(1185) |
2812 |
(1276) |
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Air-cooled |
2020 (916) |
2170(985) |
2360 (1071) |
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StandardScroll* |
DualCoolAir |
2200 (998) |
2350 (1066) |
2540 (1153) |
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*Digital-scrollnotavailable. |
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DS077 |
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Air-cooled |
2450 (1114) |
2612 |
(1185) |
2812 |
(1276) |
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DualCoolAir |
2630 (1196) |
2792 |
(1267) |
2992 (1358) |
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Semi-hermetic |
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Water/Glycol |
2750 |
(1250) |
2912 |
(1321) |
3112 |
(1412) |
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GLYCOOL/DualCoolWater |
2930 (1332) |
3092 |
(1403) |
3292 (1494) |
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Air-cooled |
2660 |
(1207) |
3103 (1408) |
3323 |
(1508) |
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StandardScroll* |
DualCoolAir |
3015 |
(1368) |
3463 (1571) |
3683 (1671) |
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*Digital-scrollnotavailable. |
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DS105 |
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Air-cooled |
2780 (1261) |
3223 |
(1462) |
3443 (1562) |
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DualCoolAir |
3135 (1422) |
3583 |
(1626) |
3803 (1726) |
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Semi-hermetic |
|
|
|
|
|
|
|
|
|
Water/Glycol |
3150 |
(1429) |
3593 (1630) |
3813 (1730) |
||
|
|
|
|
|
|
|
|
|
|
|
GLYCOOL/DualCoolWater |
3505 |
(1590) |
3953 |
(1794) |
4173 |
(1893) |
|
|
|
|
|
|
|
|
|
Table 2.4 Liebert DS Upflow Unit Weights and Shipping Weights—Approximate
|
|
|
Upflow |
|
Upflow Shipping Weights, lb (kg) |
||
|
|
|
|
w/Forward-curved Blowers |
|||
|
|
|
|
|
|||
Model Number |
Compressor Type |
Cooling Type |
EC Fan Unit Weight, lb (kg) |
Forward-Curved |
Domestic, lb (kg) |
Export, lb (kg) |
|
Unit Weight, lb (kg) |
|||||||
|
|
|
|
|
|
||
|
|
Air-cooled |
1370 (621) |
1520 (689) |
1658(753) |
1828(830) |
|
|
|
|
|
|
|
|
|
|
|
DualCoolAir |
1520 (689) |
1670 (758) |
1808(821) |
1978(898) |
|
VS035-042 |
ScrollorDigital-scroll |
|
|
|
|
|
|
|
|
Water/Glycol |
1680 (762) |
1830 (830) |
1968(893) |
2138(970) |
|
|
|
|
|
|
|
|
|
|
|
GLYCOOL/DualCoolWater |
1830 (830) |
1980 (898) |
2118(961) |
2288(1038) |
|
|
|
|
|
|
|
|
|
|
|
Air-cooled |
1900 (862) |
2070 (939) |
2220 (1007) |
2410 (1094) |
|
|
|
|
|
|
|
|
|
|
|
DualCoolAir |
2080 (943) |
2250 (1021) |
2400 (1089) |
2590 (1175) |
|
VS053 |
ScrollorDigital-scroll |
|
|
|
|
|
|
|
|
Water/Glycol |
2200 (998) |
2370 (1075) |
2532 (1149) |
2732 (1240) |
|
|
|
|
|
|
|
|
|
|
|
GLYCOOL/DualCoolWater |
2380 (1080) |
2550 (1157) |
2712 (1231) |
2912 (1321) |
|
|
|
|
|
|
|
|
3Pre-installation Preparation and Guidelines |
19 |
|
Table 2.4 Liebert DS Upflow Unit Weights and Shipping Weights—Approximate (continued)
|
|
|
Upflow |
|
Upflow Shipping Weights, lb (kg) |
|||
|
|
|
|
w/Forward-curved Blowers |
||||
|
|
|
|
|
||||
Model Number |
Compressor Type |
Cooling Type |
EC Fan Unit Weight, lb (kg) |
Forward-Curved |
Domestic, lb (kg) |
Export, lb (kg) |
||
Unit Weight, lb (kg) |
||||||||
|
|
|
|
|
|
|
||
|
|
Air-cooled |
1900 (862) |
2070 (939) |
2220 |
(1007) |
2410(1094) |
|
|
|
|
|
|
|
|
||
|
|
Dual Cool Air |
2080 (943) |
2250 (1021) |
2400 (1089) |
2590 (1175) |
||
VS070 |
Scroll orDigital-scroll |
|
|
|
|
|
|
|
|
|
Water/Glycol |
2200 (998) |
2370 (1075) |
2532 (1149) |
2732 (1240) |
||
|
|
|
|
|
|
|
||
|
|
GLYCOOL/Dual Cool Water |
2380 (1080) |
2550 (1157) |
2712 (1231) |
2912 (1321) |
||
|
|
|
|
|
|
|
|
|
|
|
Air-cooled |
1900 (862) |
2070 (939) |
2220 |
(1007) |
2410 (1094) |
|
|
StandardScroll* |
*Digital-scrollnotavailable. |
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
Air-cooled |
2330 (1057) |
2500 (1134) |
2662 |
(1208) |
2862 (1299) |
|
VS077 |
|
|
|
|
|
|
|
|
|
|
DualCoolAir |
2510 (1139) |
2680 (1216) |
2842 |
(1290) |
3042 (1380) |
|
|
Semi-hermetic |
|
|
|
|
|
|
|
|
|
Water/Glycol |
2630 (1193) |
2800 (1270) |
2962 (1344) |
3162 (1435) |
||
|
|
|
|
|
|
|
|
|
|
|
GLYCOOL/DualCoolWater |
2810 (1275) |
2980 (1352) |
3142 |
(1426) |
3342 (1516) |
|
|
|
|
|
|
|
|
||
|
|
Air-cooled |
2640 (1197) |
2880 (1306) |
3063 (1390) |
3283 (1490) |
||
|
StandardScroll* |
*Digital-scrollnotavailable. |
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
Air-cooled |
2760 (1252) |
3000 (1361) |
3183 |
(1444) |
3403 (1544) |
|
VS105 |
|
|
|
|
|
|
|
|
|
|
DualCoolAir |
3090 (1402) |
3330 (1510) |
3513 |
(1594) |
3733 (1694) |
|
|
Semi-hermetic |
|
|
|
|
|
|
|
|
|
Water/Glycol |
3130 (1420) |
3370 (1529) |
3553 (1612) |
3773 (1712) |
||
|
|
|
|
|
|
|
||
|
|
GLYCOOL/DualCoolWater |
3460 (1569) |
3700 (1678) |
3883 (1762) |
4103 (1862) |
||
|
|
|
|
|
|
|
|
20 |
Vertiv | Liebert® DS™ Installer/User Guide |
|
WARNING! Risk of top-heavy unit falling over. Improper handling can cause equipment damage, injury or death. Read all of the following instructions and verify that all lifting and moving equipment is rated for the weight of the unit before attempting to move, lift, remove packaging from or prepare the unit for installation.
WARNING! Risk of contact with sharp edges, splinters, and exposed fasteners. Can cause injury. Only properly trained and qualified personnel wearing appropriate, OSHA-approved PPE should attempt to move, lift, remove packaging from or prepare the unit for installation.
NOTICE
Risk of passageway interference. Can cause unit and/or structure damage. The unit may be too large to fit through a passageway while on or off the skid. Measure the unit and passageway dimensions, and refer to the installation plans prior to moving the unit to verify clearances.
NOTICE
Risk of damage from forklift. Can cause unit damage. Keep tines of the forklift level and at a height suitable to fit below the skid and/or unit to prevent exterior and/or underside damage.
NOTICE
Risk of improper storage. Keep the unit upright, indoors and protected from dampness, freezing temperatures and contact damage.
Upon arrival of the unit and before unpacking:
•Verify that the labeled equipment matches the bill of lading.
•Carefully inspect all items for visible or concealed damage.
•Report damage immediately to the carrier and file a damage claim with a copy sent to Vertiv or to your sales representative.
Equipment Recommended for Handling the Unit:
•Forklift
•Pallet jack
•Piano jacks
•Lift beam
•Slings
•Spreader bars
All material used to package this unit is recyclable. Please save for future use or dispose of the material appropriately.
4 Equipment Inspection and Handling |
21 |
|
If possible, transport the unit with a forklift or pallet jack. If that is not possible, use a crane with slings and spreader bars that are rated for the weight of the unit.
When using a forklift or pallet jack:
•Ensure that the fork length is suitable for the unit length and, if adjustable, spread to the widest allowable distance that will fit under the skid.
•When moving the packaged unit, lift the unit from the "HEAVY SIDE" of the unit, and do not lift the unit any higher than6 in. (152 mm). All personnel except those moving the unit must be kept 12 ft (3.7 m) or more from the unit while it is being moved.
•Ifthe unit must be lifted higher than6 in. (152 mm), all personnel not directly involved inmoving the unit must be 20 ft (5 m) or farther from the unit.
• Always refer to the location ofthe center-of-gravity indicators when lifting the unit, see Figure 3.1 below.
Figure 3.1 Center of Gravity Indicator
22 |
Vertiv | Liebert® DS™ Installer/User Guide |
|
1.Remove the exterior stretch wrap packaging and two V-shaped boards from around the unit, as shown inFigure 3.2 below.
2.Remove the corner and side packaging planks, exposing the bag over the unit.
NOTE: The bag may remain in place to protect from dust and to protect the unit panels, or it may be removed for immediate installation.
3.Remove the bag from the unit when ready to remove the skid and install the unit.
Figure 3.2 Unpacking the Unit
Item Description
1Remove exteriorwrapfrom unit
2Remove cornerandside packagingplanks
3Leave the bagon the unituntil ready to install.
4.3.1 Removing the Unit from the Skid witha Forklift
Refer to Figure 3.3 on the next page.
1.Align a forklift with either the front or rear side of the unit.
•Ensure that the tines of the fork lift are locked to the widest location.
•Use the center of gravity indicators on the unit panels when determining the entry points for the tines. Center of gravity varies per unit size and selected options.
•The tines shall be equally spaced on either side of the center of gravity indicator.
2.Insert the tines of the forklift completely under the base of the unit.
•Ensure that the tines are level, not angled in an upward direction.
•The tines are to be at a height that will allow proper clearance under the unit.
•Ensure that the tines extend beyond the opposite side of the unit.
NOTE: If these steps are not followed, damage may occur to the panels and/or base of the unit.
4 Equipment Inspection and Handling |
23 |
|
3.Remove the lag bolts from each bracket located around the base, and remove the brackets.
4.Lift the unit off the skid to an elevation point where the skid is not supporting the weight of the unit and remove the skid from under the unit.
Figure 3.3 Removing From Skid with a Forklift
Item Description
1Align forkliftwith frontorrearof unit.
2Inserttinescompletely underbase of unit.
3Remove lagboltsandbrackets
4Liftunitandremove skid.
4.3.2Removing the Unitfrom the Skid Using Rigging
1.Use the center-of-gravity indicators on the unit panels to determine the position of the slings.
•The slings shall be equally-spaced on either side of the center-of-gravity indicator
2. Place the slings and between the bottom rails of the unit and the skid as shown inFigure 3.4 on the facing page.
NOTE: Unit is shown without packaging. These instructions may be followed with or without the outer packaging in place.
24 |
Vertiv | Liebert® DS™ Installer/User Guide |
|