Vertiv Liebert DSE060 Installation and maintenance instructions

Liebert®
DSE™ PackagedSolution
ThermalManagementSystem
Installer/User Guide
60-kW (15-ton)Capacity

Vertiv | Liebert® DSE060™ Installer/User Guide
Technical Support 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.VertivCo.com/en-us/support/ for additional assistance.
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.

TABLE OF CONTENTS
1 Important Safety Instructions 5
2 Nomenclature and Components 9
2.1 Liebert DSE060 Packaged Solution Configuration-number Nomenclature 9
2.2 Component Location 12
2.3 Air-flow Configurations 12
3 Pre-installation PreparationandGuidelines 13
3.1 Planning Dimensions 14
3.2 Connections and System Setup 14
3.2.1 Electrical Connections 14
3.2.2 Evaporator Condensate-drain Connection 14
3.3 Operating Conditions 16
3.3.1 Cooling 17
3.4 Unit Weights 17
4 Equipment Inspection and Handling 19
4.1 Rigging to Lift the Unit 20
4.2 Using Forklift to Install the Unpackaged Unit 21
5 Electrical Field Connections 23
6 Checklist for Completed Installation 27
6.1 Moving and Placing Equipment 27
6.2 Electrical Installation Checks 27
6.3 Other Installation Checks 27
6.4 BMS and Sensor Installation Checks 28
7 Initial Start-up Checks andCommissioningProcedure forWarrantyInspection 29
8 Maintenance 31
8.1 Service/Maintenance Access to the Evaporator Compartment 32
8.2 Filters 32
8.2.1 Filter-replacement 32
8.3 Evaporator Blower Drive System—EC Fans 34
8.3.1 Protective Features 34
8.3.2 Fan Impellers and Bearings Maintenance 35
8.3.3 Fan Assembly Troubleshooting 35
8.3.4 Removing Evaporator EC Fans 39
8.4 Electronic Expansion Valve (EEV) Maintenance 41
8.5 Compressor Maintenance 42
8.5.1 Compressor Oil 42
8.5.2 Rotalock Valve 42
8.5.3 Replacement Compressors 43
8.5.4 Compressor Motor Burnout 43
8.5.5 Unloading Solenoid(s) on a Digital-scroll Compressor 43
8.5.6 Replacing the Compressor 43
Vertiv | Liebert® DSE060™ Installer/User Guide | 3

8.6 Evaporator Coil 44
8.7 General Condenser Maintenance 44
8.8 Condenser Cleaning 44
8.8.1 When to Clean the Condenser Coil 44
8.8.2 What to Use to Clean the Condenser Coil 45
8.8.3 Cleaning the Condenser Coil 45
8.8.4 Cleaning the Condenser Fan 46
8.9 Replacing the Condenser Fan 46
8.9.1 Verifing the Fan Address 53
8.10 Replacing the Premium-efficiency Control Board 57
8.10.1 Preparing to Replace the Board 57
8.10.2 Installing the Replacement Board 59
8.11 Pumped-refrigerant Economizer (PRE) 60
9 Preventive Maintenance Checklist 61
Appendices 67
Appendix A: Technical Support and Contacts 67
Appendix B: Submittal Drawings 69
Vertiv | Liebert® DSE060™ Installer/User Guide | 4

1 IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important safety instructions that should be followed during the installation and
maintenance of the Liebert®DP060. 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 on the unit
and in this 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
disconnect switch is on the exterior of the enclosure. 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. Open all local and remote
electric power supply disconnect switches and verify with a voltmeter that power is off before
working within the component 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 fan electric control/connection enclosures.
1 Important Safety Instructions 5

WARNING! Risk of over-pressurization of the refrigeration system. Can cause explosive
discharge of high-pressure refrigerant, loss of refrigerant, environmental pollution, equipment
damage, injury, or death. This unit contains fluids and gases under high pressure. Use extreme
caution when charging the refrigerant system. Do not pressurize the system higher than the
design pressure marked on the unit's nameplate.
WARNING! Risk of pressurized doors flying open or slamming closed suddenly. Can cause
serious injury. Do not attempt to open doors while fans are running. Do not turn on fans with
doors open. Before opening the door, open all local and remote electric power supply
disconnect switches, verify with a voltmeter that power is off, and verify that all fans have
stopped rotating. Do not leave unsecured objects in the fan's bay after any maintenance
operation.
WARNING! Risk of contact with flying objects. Can cause serious injury or death. Do not leave
unsecured objects or tools in the fan's bay after performing maintenance operations. Re-install
all panels before starting up this unit after maintenance is performed.
WARNING! Risk of very heavy, 250-lb (113.4-kg) condenser fan modules and 125-lb (57-kg)
evaporator fan modules dropping downward suddenly. Can cause injury or death.
Support fan modules before removing mounting hardware. Use caution to keep body parts out
of the fan modules pathway during repositioning. Only properly trained and qualified personnel
should work on this equipment.
WARNING! Risk of improper moving. Can cause equipment damage, injury or death. Use only
lifting equipment that is rated for the unit weight by an OSHA-certified rating organization. The
center of gravity varies depending on the unit size and selected options. The slings must be
equally spaced on either side of the center of gravity indicator.
Unit weights are listed in Table 3.3 on page17. Use the center of gravity indicators on the unit
to determine the position of the slings.
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.
WARNING! Risk of improper wiring, piping, moving, lifting and handling. Can cause equipment
damage, serious injury or death. 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.
Vertiv | Liebert® DSE060™ Installer/User Guide
6

WARNING! Risk of improper wire sizing/rating and loose electrical connections. Can cause
overheated wire and electrical connection terminals resulting in smoke, fire, equipment and
building damage, injury or death. Use correctly sized copper wire only and verify that all
electrical connections are tight before turning power On. Check all electrical connections
periodically and tighten as necessary.
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 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 hot surfaces. Can cause burn injury. The EC fans and
electronics housing are extremely hot during operation. Allow sufficient time for them to cool
to a touch-safe temperature before handling. Use extreme caution and wear appropriate,
OSHA-approved PPE when replacing or performing maintenance on the EC fans.
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. Fan
modules weigh in excess of weigh in excess of 125lb (57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 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) may arise. Take appropriate technical safety measures. Operating personnel must
wear appropriate, OSHA-approved PPE and observe all appropriate hearing-protection safety
requirements.
1 Important Safety Instructions 7

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®DP060 systems require the use of POE (polyolester) oil. POE oil absorbs water at a
much faster rate when exposed to air than previously used oils. Because water is the enemy of
a reliable refrigeration system, extreme care must be used when opening systems during
service. If water is absorbed into the POE oil, it will not be easily removed and will not be
removed through the normal evacuation process. If the oil is too wet, it may require an oil
change. POE oils also have a property that makes them act as a solvent in a refrigeration
system. Maintaining system cleanliness is extremely important because the oil will tend to
bring any foreign matter back to the compressor.
NOTICE
Risk of improper operation in high-humidity conditions. Can cause unit damage and water
carryover.
The Liebert® DP060 operates only as a sensible cooling unit and does not provide
dehumidification.
NOTE: The Liebert® cooling unit has a factory-installed high pressure safety switch in the high-side
refrigerant circuit.
Agency Listed
Standard 60-Hz units are CSA Certified to the harmonized U.S. and Canadian product safety standard
CSA C22.2 No 236/UL 1995 for “Heating and Cooling Equipment” and are marked with the CSA c-us logo.
Vertiv | Liebert® DSE060™ Installer/User Guide
8

2 NOMENCLATURE AND COMPONENTS
This section describes the configuration number for Liebert® DP060 units and components.
2.1 Liebert DSE060 Packaged Solution Configuration-number Nomenclature
The following tables describe each digit of the 40-digit DP060 configuration number. The 14-digit model
number consists of the first 10 digits and last 4 digits of the configuration number.
Configuration -number Digits 1 to 10 = first 10 digits of 14-digit model number
1 2 3 4 5 6 7 8 9 10
D P 0 6 0 T P 1 A D
Table 2.1 DSE060 Configuration-number Digits 1 to 10 Example
Configuration-number Detail Digits 11 to 21
11 12 13 14 15 16 17 18 19 20 21
0 2 0 8 1 6 L D B 0 P
Table 2.2 DSE060 Configuration-number Detail Digits 11 to 21 Example
Configuration-number Detail Digits 22 to 36
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
0 A A 1 0 0 0 0 0 0 0 0 0 0 0
Table 2.3 DSE060 Configuration-number Detail Digits 22 to 36 Example
Configuration -number Digits 37 to 40 = last 4 digits of 14-digit model number
37 38 39 40
# # # A
Table 2.4 DSE060 Configuration-number
Digits37to40Example
Digit Description
Digits 1 and 2 = Product Family
DP = Liebert® Packaged DSE
Digit 3 to 5 = Cooling Capacity, kW
Nominal sensible capacity, kW
Digit 6 = Air Discharge
T = Perimeter, top inlet/front supply
Digit 7 = System Type
P = Air-cooled, EconoPhase ready
Table 2.5 DSE060 Packaged Solution Configuration-number Digit Definitions
2 Nomenclature and Components 9

Digit Description
Digit 8 = Air-flow (Fan Type)
1 = EC plug fans
Digit 9 = Power Supply
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
Digit 10 = Cooling System
D = Digital scroll, R-410A
Digit 11 = Humidifier
0 = None
Digit 12 = Display
2 = Liebert® iCOM High Definition
Digit 13 = Options
0 = None
Digit 14 = Air Filter
8 = MERV 8, 4-in.
9 = MERV 11, 4-in.
Digit 15 = Coil Option
1 = Non-coated coils, evaporator and condenser
Digit 16 = Enclosure Option
6 = Standard color, pebble-gray
Digit 17 = High-voltage option
L = Locking disconnect
6 = Dual disconnect with reversing starter
Digit 18 = Option packages
D = Low-voltage terminal package + Remote humidifier contact
Digit 19 = Monitoring
B = Base Comms & Connectivity
Digit 20 = Sensors
0 = None
Digit 21 = Packaging
P = Domestic
Table 2.5 DSE060 Packaged Solution Configuration-number Digit Definitions (continued)
Vertiv | Liebert® DSE060™ Installer/User Guide
10

Digit Description
Digit 22 = Controls
0 = None
S = Quick-start and Capacitive buffer (contact the factory)
Digit 23 =EconoPhase
A = Standard capacity
Digit 24 = Condenser Coil
A = Standard ambient condenser
Digit 25 = 120-V Options
1 = 120V Utility Power, Customer-supplied
T = 120-V utility power from main-unit power supply
Digit 26 = Option
0 = No power meter
P = Power meter (Contact the factory)
Digit 27 = Option
0 = None
Digit 28 = Option
0 = None
Digit 29 = Condensate Pump
0 = None
Digit 30 to 36
0 = Placeholder
Digit 37 to 39 = Factory Configuration Number
Digit 40 = Configuration Code
A = No SFA
S = SFA
Table 2.5 DSE060 Packaged Solution Configuration-number Digit Definitions (continued)
2 Nomenclature and Components 11

2.2 Component Location
The unit component locations are described in the submittal documents included in the Submittal
Drawings on page69.
The following table lists the relevant documents by number and title.
Document Number Title
DPN004597 Component Location, Perimeter Unit
Table 2.6 Component-location Drawings
2.3 Air-flow Configurations
Document Number Title
DPN004598 Airflow Schematic, Perimeter Unit
DPN004599 Evaporator Ducting Dimensional Data
Table 2.7 Perimeter unit air-flow schematic and duct connection
Vertiv | Liebert® DSE060™ Installer/User Guide
12

3 PRE-INSTALLATION PREPARATIONANDGUIDELINES
NOTE: Before installing unit, determine whether any building alterations are required to run wiring and
ductwork. Follow all unit dimensional drawings and refer to the submittal engineering dimensional
drawings of individual units for proper clearances.
Refer to DSE060 Packaged Solution Configuration-number Digit Definitions (continued) on page11, and
submittal drawings to determine the type of system being installed and anticipate building alterations
and ductwork needed.
The unit and anchor dimensions are described in the submittal documents included in the Submittal
Drawings on page69.
•Verify that mounting surface/roof top is level, solid and sufficient to support the unit. See
DP060 unit weights on page17, for unit weights.
•Verify that the support structure for the unit (concrete or other type) has a flat, regular
surface and is adequate to support the unit operating weight.
•Verify that adequate water-control/drain system is in place per local code. Refer to the
appropriate submittal drawing, listed in Dimension Planning Drawings on the next page, for the
condensate drain-line location and connection size.
•Verify that the high-voltage electric-supply lines are adequately sized based on the electrical
specification on the unit's name plate and meet local code.
•Verify that the utility electric-supply lines (lights and outlet) are adequately sized and meet
local code.
•Verify that all control and communication wiring are properly routed to the unit control panel
and meet local code.
•Confirm that the conditioned space has a proper envelope and vapor barrier.
•Handle outside air and humidity control externally to the Liebert® DP060 unit. The DP060
does not control humidity and is not intended to handle outside air.
•Allow at least the minimum recommended clearances for maintenance and service. See the
appropriate submittal documents for dimensions in Submittal Drawings on page69
•Ensure that there is no obstruction when installing ductwork connections and transitions to
minimize friction losses and turbulence.
•Verify that all duct joints are sealed to prevent air leakage or water penetration.
3 Pre-installation PreparationandGuidelines 13

3.1 Planning Dimensions
The unit and anchor dimensions are described in the submittal documents included in the Submittal
Drawings on page69.
The following table lists the relevant documents by number and title.
Document Number Title
DPN004600 Cabinet and Anchor Dimensional Data
DPN004599 Evaporator Ducting Dimensional Data
DPN004601 Condensate-drain Access and Location
DPN004602 Evaporator Compartment Service Area
DPN004756 Installation and Service Clearance for Multiple Units
Table 3.1 Dimension Planning Drawings
3.2 Connections and System Setup
3.2.1 Electrical Connections
•Three-phase electrical service is required for all models. Electrical service must conform to
national and local electrical codes. See Electrical Field Connections on page23, for the details.
3.2.2 Evaporator Condensate-drain Connection
Connect the condensate-drain line to an adequate water-drain system. See 3.2 above, for the connection
on the unit. Observe the following requirements and Figure 3.2 on page16, when installing and routing
the drain line:
•Insulate the field-supplied condensate-drain piping with heat trace so it will not freeze.
•The line must be the full size of the drain connection. The connection port is 3/4-in. pipe with
CPVC 3/4-in. FPT fitting.
•Slope the drain line continuously away from the unit, and pitch the drain line a minimum of 1/8-
in. (3.2-mm) per 1ft (305mm) toward the drain.
•The line must be made of a material that is suitable for draining water and be rigid enough that
it does not sag between supports, which creates unintentional traps.
•The drain line must comply with all applicable codes.
Vertiv | Liebert® DSE060™ Installer/User Guide
14

Figure 3.1 Condensate Drain Location
Item Description
1 Condensate-drain connection
3 Pre-installation PreparationandGuidelines 15

Figure 3.2 Correct and Incorrect condensate-drain line
Item Description
1 Correct drain-line installation
2 Incorrect drain-line installation
3 DSEunit
4 Internal drain
5 External drain
6 Continuous downward slope
7 External trap. Do not trap externally.
8 External traps, although unintentional. Lines must be rigid enough not to bow over top of other objects.
Table 3.2 Evaporator Drain-line Figure Descriptions
3.3 Operating Conditions
The Liebert® DP060 must supply air to a conditioned space within the operating envelope that ASHRAE
recommends for data centers. Operating the DP060 outside of this envelope can decrease equipment
reliability. Refer to ASHRAE’s publication, “Thermal Guidelines for Data Processing Environments.”
Vertiv | Liebert® DSE060™ Installer/User Guide
16

3.3.1 Cooling
The recommended maximum return-air temperature is 105°F (40°C) and maximum dew point is 59°F
(15°C). The recommended minimum return-air temperature setpoint Dry Bulb is 85°F (29°C).
Operating outside this envelope can decrease equipment reliability.
NOTE: If running in supply-air control, the minimum supply-air setpoint is 68°F(20°C), and the
maximum supply air temperature is 80°F (27°C).
NOTE: When running above 77°F (25°C) supply air temperature, the superheat readings on the
refrigeration circuits may be higher than 7.2°F(–14°C). The EEVs will run out of stroke and limit mass
flow, which will result in higher than normal superheat.
3.4 Unit Weights
Model Weight, lb (kg)
DP060 Perimeter 5,500 (2,495)
Table 3.3 DP060 unit weights
3 Pre-installation PreparationandGuidelines 17

Vertiv | Liebert® DSE060™ Installer/User Guide
18
This page intentionally left blank

4 EQUIPMENT INSPECTION AND HANDLING
SAFETY INFORMATION
WARNING! Risk of improper moving. Can cause equipment damage, injury or death. Use only
lifting equipment that is rated for the unit weight by an OSHA-certified rating organization. The
center of gravity varies depending on the unit size and selected options. The slings must be
equally spaced on either side of the center of gravity indicator.
Unit weights are listed in DP060 unit weights on page17.
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.
•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.
•Always refer to the location of the center-of-gravity indicators when lifting the unit, see Center-
of-Gravity Indicators on the next page.
Equipment Recommended for Handling the Unit:
•Lift beam
•Slings
•Spreader bars
•Shims and blocks
4 Equipment Inspection and Handling 19

Figure 4.1 Center-of-Gravity Indicators
Item Description
1 Center-of-gravity marker
4.1 Rigging to Lift the Unit
See Lugs to attach rigging to a perimeter-unit configuration on the facing page, for the location of the
lifting lugs on the unit, and use spreader bars and/or shimmed blocks to prevent damage to the unit.
•Unit must remain level when lifted to prevent damage to internal equipment.
•Do not place unit directly on the ground. If the unit must be set down, use shims or blocks for
leveling and to keep unit off the ground.
Before lifting or moving, clear the area of all unnecessary personnel. Clear the area of any debris and
unrelated tools or foreign objects.
Vertiv | Liebert® DSE060™ Installer/User Guide
20