Vertiv Liebert DSE Packaged Series, Liebert DSE Packaged 400, Liebert DSE Packaged 500 Installer/user Manual
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Liebert®
DSE™ Packaged Solution
Installer/User Guide
400 kW to 500 kW
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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.
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.Vertiv.com/en-us/support/ for additional assistance.
Vertiv | DSE Packaged Solution Installer/User Guide
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TABLE OF CONTENTS
1 Important Safety Instructions 1
2 Nomenclature and Components 5
2.1 Liebert DSE Packaged Solution Model Number Nomenclature 5
2.2 Component Location 7
2.3 Air Flow Configurations 8
3 Pre-installation PreparationandGuidelines 11
3.1 Storage before Installation 11
3.2 Rooftop Unit Installation Guidelines 12
3.2.1 Service Clearance for Rooftop Units 12
3.3 Planning Dimensions 13
3.4 Connections and System Setup 13
3.4.1 Electrical Connections 13
3.4.2 Evaporator Drip Pan Connection 13
3.5 Operating Conditions 15
3.5.1 Cooling 16
3.6 Unit Weights 16
4 Equipment Inspection and Handling 17
4.1 Rigging to Lift the Unit 17
5 Electrical Field Connections 21
6 Checklist for Completed Installation 29
6.1 Moving and Placing Equipment 29
6.2 Electrical Installation Checks 29
6.3 Other Installation Checks 29
6.4 BMS and Sensor Installation Checks 29
7 Initial Start-up Checks andCommissioningProcedure forWarrantyInspection 31
8 Maintenance 33
8.1 Service Access for Unit Maintenance 34
8.2 Filters 35
8.2.1 Replacing the Filters 36
8.3 Evaporator Fan Maintenance 37
8.3.1 Fan Assembly Troubleshooting 37
8.3.2 Fan Assembly Maintenance 38
8.3.3 Blower Motor Lubrication 38
8.3.4 Removing Fan Assembly 38
8.4 Electronic Expansion Valve (EEV) Maintenance 38
8.5 Compressor Maintenance 38
8.5.1 Compressor Oil 39
8.5.2 Replacement Compressors 39
8.5.3 Rotalock Valve on Digital-Scroll Compressors 39
8.5.4 Unloading Solenoids on a Digital Scroll Compressor 40
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8.5.5 Compressor Electrical Failure (Motor Burnout) 40
8.5.6 Replacing a Compressor with Electrical Failure (MotorBurnout) 40
8.5.7 Compressor Mechanical Failure 41
8.5.8 Replacing a Compressor with Mechanical Failure 41
8.5.9 Refrigerant Piping and Charging 42
8.5.10 Refrigerant Charge Requirements for Air Cooled Systems 42
8.5.11 Additional Oil Requirements for Scroll and Digital Scroll Compressors 43
8.5.12 Evacuation, Leak Testing, and Charging 44
8.6 General Condenser Maintenance 46
8.7 Condenser Cleaning 46
8.7.1 When to Clean the Condenser Coil 46
8.7.2 What to Use to Clean the Condenser Coil 46
8.7.3 Cleaning the Condenser Coil 46
8.7.4 Cleaning the Condenser Fan 47
8.8 Replacing the Condenser Fan 47
8.8.1 Verifing the Fan Address 54
8.9 Replacing the Premium Efficiency Control Board 55
8.9.1 Preparing to Replace the Board 55
8.9.2 Installing the Replacement Board 57
8.10 Pumped Refrigerant Economizer (PRE) 58
9 Preventive Maintenance Checklist 59
Appendices 63
Appendix A: Technical Support and Contacts 63
Appendix B: Submittal Drawings 65
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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®DSE™ Packaged Solution. 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 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 over-pressurization of the refrigeration system. Can cause explosive discharge of highpressure 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.
1 Im portant Safety In structions
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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) 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.Use the center of gravity indicators on the unit to determine the position of the
slings. Unit weights are listed in Table 3.3 on page16, and Table 3.4 on page16
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.
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.
WARNING! Risk of wiring damage, short circuits and electric shock. Can cause overheated wiring, smoke, fire,
activation of fire suppression systems and EMS personnel and equipment, building and equipment damage,
injury or death. Insert CSA certified or UL listed bushings into holes and or knockouts used to route wiring
through metal panels to protect the wire insulation from contact with sheet metal edges.
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WARNING! Risk of explosive discharge of high-pressure refrigerant. Can cause serious injury. Neutral and
service ports on the rotalock valve do not have a valve core. Front-seat the service valves and relieve
pressure from the compressor before loosening a part or a component attached to the service valve. Follow
local codes to properly reclaim refrigerant.
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 lbs. (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 low-hanging panels. Can cause injury or equipment damage. Wear appropriate, OSHAapproved PPE when entering and working within the enclosure.
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 70dB(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 Im portant Safety In structions
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NOTICE
NOTICE
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.
Risk of oil contamination with water. Can cause equipment damage.
Liebert®DSE Packaged Solution 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.
Risk of improper operation in high-humidity conditions. Can cause unit damage and water carryover.
The Liebert®DSE Packaged Solution operations 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.
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2 NOMENCLATURE AND COMPONENTS
This section describes the configuration number for Liebert® DSE Packaged Solution 400 kW/500 kW unit and components.
2.1 Liebert DSE Packaged Solution Model Number Nomenclature
The following tables describe each digit of the 40-digit Liebert® DSE™ Packaged Solution.
Table 2.1 DSE 400 kW/500 kW Packaged Solution Configuration Number Digits 1 to 10 Example
DSE 400 kW/500 kW Packaged S olutionConfiguration Number Digits 1 to 10 Example
1 2 3 4 5 6 7 8 9 10
D P 4 0 0 T P 2 A T
Table 2.2 DSE 400 kW/500 kW Packaged Solution Configuration Number Digits 11 to 36 Example
DSE 400 kW/500 kW Packaged S olutionConfiguration Number Digits 11 to 36 Example
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25–36
0 H 0 8 1 6 L 0 U 0 P A A P —
DSE 400 kW/500 kW Packaged Solution Configu ration Numb er 37 to 40 Example
37 38 39 40
— — — —
Table 2.3 DSE Packaged Solution Model Number Digit Definitions
Digit Description
Digits 1 a nd 2 = Product Family
DP = Liebert® DSE Packaged Solution
Digit3to5 = Cooling Capacity, kW
400 = Nominal sensible c apacity, 400-kW
500 = Nominal sensible capacity, 500-kW
Digit6 = Air Discharge
F = Perimeter, front inlet/frontsupply
R = Roof-top, bottom inlet/bottom supply
B = Roof-top draw-thru, bottom inlet/bottom supply
Digit7 = System Type
P = Air-cooled, Econ-O-Phase
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Table 2.3 DSE Packaged Solution Model Number Digit Definitions (continued)
Digit Description
Digit8 = Air-flow (Fan Type)
2 = Direct-drive plenumfans and VFD (standard air flow)
Digit9 = Power Supply
A = 460V - 3ph - 60Hz
Digit10 = Cooling System
T = Tandem with digital scroll, R-410A
Digit11 = Humidifier
0 = None
Digit12 = Display
2 = iCOM (High Definition)
Digit13 = Options
0 = None
A = Supply-air isolating gravity damper
Digit14 = Air Filter
8 = MERV 8, 4-in.
9 = MERV 11 , 4-in.
1
Digit15 = Coil Option
1 = Non-coated evaporator coil, non-coated condenser coil
Digit16 = Enclosure Option
6 = Liebert® standard pebble-gray color
Digit17 = High-voltage option
L = Locking disconnect
6 = Locking disconnect + ATS
Digit18 = Option pac kages
0 = None
L = Low-voltage terminal package
Digit19 = Monitoring Cards
B = Base Comms and Connectivity
Digit20 = Sensors
0 = None
A = Compressorhigh-temp
Digit21 = Packaging
P = Domestic
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Table 2.3 DSE Packaged Solution Model Number Digit Definitions (continued)
Digit Description
Digit22 = Controls Power
0 = Controlspower from main input feed
A = Separate, 120-V feed from UPS
S = Quick Start and Capacitive Buffer
Digit23 = EconoPhase
A = Standard capacity
Digit24 = Packa ging
P = Domestic
Digit25 to 36 = Placeholder
Digit37 to 40 = Factory configuration number
1. For damper:If Digit 6 = F, the damper is on front supply. Damper is not available if Digit 6 = R or B .
2. For controls power: if Digit 22 = 0, there is no power buffer.
2
2.2 Component Location
The unit component locations are described in the submittal documents included in the Submittal Drawings on page65.
The following table lists the relevant documents by number and title.
Table 2.4 Component Location Drawings
Docu ment Number Title
DPN004155 Component Location, Perimeter Unit
DPN004190 Component Location, Roof-top Unit
DPN004592 Component Location, Roof-top Draw-through Unit
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2.3 Air Flow Configurations
Figure 2.1 Perimeter Unit Air Flow Configuration
Item Description
1 Return air from data c enter
2 Supply air to data center
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Figure 2.2 Rooftop Unit Air Flow Configuration
Item Description
1 Return air from data c enter
2 Supply air to data center
2 N omenclature an d Components
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Figure 2.3 Rooftop Unit Draw Through Air Flow Configuration
Item Description
1 Return air from data c enter
2 Supply air to data center
Table 2.5 Air Flow Configuration Drawings
Document N umber Title
DPN004598 Airflow Schematic, Perimeter Unit
DPN004190 Component Location, Rooftop Unit
DPN004592 Component Location, Rooftop Draw Through Unit
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3 PRE-INSTALLATION PREPARATIONANDGUIDELINES
3.1 Storage before Installation
If storing the unit for long periods before installation:
• Remove the packaging from the unit, and allow proper clearance around the unit to perform periodic
inspections and maintenance.
• Inspect the unit periodically for condensation inside the unit or other signs of other effects of the storage
environment.
• Rotate the fans and motor shaft by hand periodically for several revolutions. Look for signs of lubrication
problem or obstructions.
• If storing at low temperatures trapped moisture can collect on walls and electrical components. We
recommend routine inspections and, if needed, install electric heaters to prevent condensation.
NOTE: Before installing unit, determine whether any building alterations are required to run 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 Table 2.3 on page5, and submittal drawings to determine the type of system being installed and anticipate
building alterations and duct work needed.
The unit and anchor dimensions are described in the submittal documents included in the Submittal Drawings on page65.
• Verify that mounting surface/roof top is level, solid and sufficient to support the unit. See Table 3.3 on
page16, and Table 3.4 on page16, 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. If connecting the drip-pan clean-out line, refer to
the appropriate submittal document in Table 3.1 on page13, for the clean-out line location and port 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® DSE™ Packaged Solution unit. The DSE™
Packaged Solution 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 page65
• Ensure that there is no obstruction when installing duct work connections and transitions to minimize friction
losses and turbulence.
• Verify that all duct joints are sealed to prevent air leakage or water penetration.
• If unit is installed but will not be commissioned for a long period, operate the fans or install electric heaters to
prevent internal condensation. Refer to Storage before Installation above, and follow the guidelines until
commissioned.
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3.2 Rooftop Unit Installation Guidelines
The rooftop units must be supported by an appropriately designed curb. A curb is the interface between the building and
the rooftop unit. It supports the weight of the roof-top unit by transferring the load onto the roof's structural members,
streamlines duct-work connections, and provides the weatherproof seal to the roof.
• A structural engineer must verify that the roof has adequate strength and ability to support loads from the
weight of the unit, curb, snow, wind and seismic events.
• The curb and any cribbing must be designed and certified by a qualified engineer to support the anchoring
loads of the unit and provide for a leak free design. Sealing of the curb to the roof is the responsibility of the
qualified engineer or architect to design and qualified contractor to execute.
• The roof curb should be installed by qualified personnel. Improper installation or faulty construction can result
in water or air leaks ori in structural failure and collapse.
• The roof curb mounting surface must be square and level prior to setting equipment.
• The installer must ensure that any appropriate sealing material is applied between the unit and the curb to
provide water- and air-tight connections in accordance with the design of the curb.
• Sealing materials cannot interfere with the anchoring connection surface of the roof-top unit, or the unit may not
be able to withstand its rated seismic or wind capacities. Vibration isolators should not be used without the
express consent of Vertiv engineering.
• Any flashing from the rooftop unit to the curb is the responsibility of the installing contractors.
• Any water ingress through any penetrations from flashing or other connections to the roof-top unit are the
responsibility of the installing contractor to remedy.
3.2.1 Service Clearance for Rooftop Units
Allow for recommended service clearances around the unit per appropriate submittal drawing for your unit, listed in Table
3.1 on the facing page. Provide a roof walkway along the sides of the unit for service and access to controls and
components. Contact your Vertiv sales representative for service requirements that are less than those recommended .
Applications in geographic areas subjected to seismic or hurricane conditions must meet code requirements for fastening
the unit to the curb and the curb to the building structure.
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3.3 Planning Dimensions
The unit and anchor dimensions are described in the submittal documents included in the Submittal Drawings on page65
The following table lists the relevant documents by number and title.
Table 3.1 Dimension Planning Drawings
Docu ment Number Title
DPN004465 Equipment Floor Plan Layout for Perimeter and Rooftop Units
DPN004653 Equipment Floor-Plan Layout for Rooftop Draw Through Units
Perimeter Units
DPN004148 Cabinet and Anchor Dimensional Data
DPN004326 Drip Pan Clean Out Access and Location
Rooftop Units
DPN004188 Cabinet and Anchor Dimensional Data
DPN004593 Cabinet and Anchor Dimensional Data, Draw Through Units
DPN004651 Condensate Drain Access and Location
3.4 Connections and System Setup
3.4.1 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 page21, for the details.
• Plan the routing of wiring and duct work to the unit. Refer to the appropriate electrical connection drawings for
your system in Submittal Drawings on page65.
3.4.2 Evaporator Drip Pan Connection
Connect the evaporator clean-out line to an adequate water-drain system. See Figure 3.1 on the next page, or Figure 3.2
on page15, for the connection on the unit. Observe the following requirements when installing and routing the clean out line:
• Insulate the line with heat trace so it will not freeze.
• The line must be the full size of the drain connection. The connection port is 1 in. pipe with CPVC 1 in. FPT
fitting.
• Slope the drain line continuously away from the unit, and pitch the drain line 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.
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Figure 3.1 Drip Pan Clean Out Line Location on Perimeter and Rooftop Units
Item Description
1 Water drain connection for evaporator drippan. Accessed by removing the floor panel a bove it. (Next to the compressor com partment).
2 Location of the drip-pan clean-out line in the perimeter unit.
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Figure 3.2 Drip Pan Clean Out Line Location on Draw-Through Rooftop Units
D
Item Description
1 Rear of unit
2 Left side view of unit
3 Location of the drip-pan clean-out line on rooftop unit.
3.5 Operating Conditions
The Liebert® DSE™ Packaged Solution must supply air to a conditioned space within the operating envelope that ASHRAE
recommends for data centers. Operating the DSE™ Packaged Solution outside of this envelope can decrease equipment
reliability. Refer to ASHRAE’s publication, “Thermal Guidelines for Data Processing Environments.”
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3.5.1 Cooling
Table 3.2 below, provides the recommended maximum and minimum return-air temperature and dew-point conditions for
the DSE Packaged Solution Applications.
Table 3.2 Application Envelope for DP400/500
Control Settings
Maximum Return Air Temperature 105°F (40°C) 105°F (40°C) 105°F (40°C)
Minimum return-air temperature 85°F (29°C) 95°F (35°C) * 95°F (35°C)*
Maximum dew point 59°F (15°C) 52°F (11 °C) 52°F (11°C)
Maximum Supply-Air Setpoint 80°F (27°C) 80°F (27°C) * 80°F (27°C) *
Minimum Supply Air ControlSetpoint 68°F (20°C) 7 0°F (21°C) 75°F (24°C)
*Note: DP500 minimum air-side temperature differential at full load is 25°F (14°C)
DP400F
DP400R
DP400B
DP500F
DP500B
DP500R
Operating outside this envelope can decrease equipment reliability.
NOTE: When running above 77°F (25°C) supply-air temperature, the superheat readings on the refrigeration circuits
may be higher than 13°F(7.2°C). The EEVs will run out of stroke and limit mass flow, which will result in higher than
normal superheat.
3.6 Unit Weights
Table 3.3 DSE400 Unit Weights
Model Weight, lb (kg)
Perimeter 23,500 (10,659)
Rooftop 25, 500 (11, 567)
Rooftop Draw Through 25,500 (11, 567)
Table 3.4 DSE500 Unit Weights
Model Weight, lb (kg)
Perimeter 224,000 (10,886)
Rooftop 26,000 (11, 793)
Rooftop Draw Through 26,000 (11,793)
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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. Use the center of gravity indicators on the unit to determine the position of the
slings. Unit weights are listed in Table 3.3 on page16 and Table 3.4 on page16.
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.
Equipment Recommended for Handling the Unit:
• Lift beam
• Slings
• Spreader bars
• Shims and blocks
4.1 Rigging to Lift the Unit
Depending on whether you have a perimeter or roof-top configuration, see Figure 4.1 on the next page, or Figure 4.2 on
page19, for the location of the lifting lugs on the unit and for the use of spreader bars and 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.
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Figure 4.1 Lugs to Attach Rigging to a Perimeter Unit Configuration
Item Description
1 Lugsto attach rigging. Typical both sides.
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Figure 4.2 Lugs to Attach Rigging to a Rooftop Unit Configuration
Item Description
1 Lugsto attach rigging. Typical both sides.
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5 ELECTRICAL FIELD CONNECTIONS
Three-phase electrical service is required for all models. Electrical service must conform to national and local electrical
codes. Refer to equipment nameplate regarding wire size and circuit protection requirements. Refer to the appropriate
submittal drawing, listed in Table 5.1 on the next page, for electrical service entrances into unit
A manual electrical disconnect switch should be installed in accordance with local codes and distribution system. Consult
local codes for external disconnect requirements.
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 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.
5 El ectrical Field Connections
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.
WARNING! Risk of wiring damage, short circuits and electric shock. Can cause overheated wiring, smoke, fire,
activation of fire suppression systems and EMS personnel and equipment, building and equipment damage,
injury or death. Insert CSA certified or UL listed bushings into holes and or knockouts used to route wiring
through metal panels to protect the wire insulation from contact with sheet metal edges.
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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.
See transformer label for primary tap connections. Installer will need to change transformer primary taps if
applied unit voltage is other than pre-wired tap voltage.
NOTICE
Risk of improper electrical connection of three-phase input power. Can cause backward compressor rotation
and unit damage. Service technicians should use a gauge set on the system during the initial start up to verify
that the three-phase power is connected properly. Three-phase power must be connected to the unit line
voltage terminals in the proper sequence so that the compressors rotate in the proper direction. Incoming
power must be properly phased to prevent compressors from running backward. We recommend checking the
unit’s phasing with proper instrumentation to ensure that power connections were made correctly. We also
recommend verifying discharge and suction pressures during start up to ensure that the compressors are
running in the correct direction.
NOTE: Use water-tight fittings for all electrical connections. Failure to do so risks damage to the outdoor unit.
The unit requires two separate power-supply connections:
• A 3-phase, 460V power supply to the DSE™ Packaged Solution unit electrical enclosure or ATS.
• A separate 120V power feed to the utility box (for light switches and convenience outlet).
• An optional, separate 120V power feed from a field-supplied UPS to the DSE™ Packaged Solution-unit lowvoltage controls, which are located in the main electrical panel.
The electrical connections are described in the submittal documents included in the Submittal Drawings on page65.
Low voltage connections are detailed in
• Figure 5.1 on the facing page
• Figure 5.2 on page24
• Figure 5.3 on page25
• Figure 5.4 on page26
• Figure 5.5 on page27
The following table lists the relevant documents by number and title.
Table 5.1 Electrical Field Connection Drawings
Docu ment Number Title
DPN004960 Electrical Connections
DPN005099 Service Door Access 400/500 kW P erimeter Unit
DPN005051 Service Door Access 400/500 kW Draw Through Rooftop Unit
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Figure 5.1 Low Voltage BMS Wiring to Unit in Main Electrical Enclosure
Item Description
1 Low voltage BMS wiringto unit
5 El ectrical Field Connections
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Figure 5.2 Location of iCOM Master Board and iCOM Slave Board
Item Description
1 iCOM master control board
2 iCOM slave control board
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Figure 5.3 Low Voltage iCOM/vNSA Switch Wiring to Unit in Main Electrical Enclosure
Item Description
1 Location of the connection for CAT5 cable from Liebert® VNSAICOM8 network switch.
5 El ectrical Field Connections
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Figure 5.4 120V UPS Power Feed Connection for Low Voltage Controls in Main Electrical Enclosure
Item Description
1 Location of the connection for the power feed from the optional 120-V UPS
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Figure 5.5 Factory Installed Return Air Temperature and Humidity Sensor (RA) and 2T CANbus Cable Connection in
Main Electrical Enclosure
Item Description
1 2T CANbus-cable connector inside the main electrical enclosure.
5 El ectrical Field Connections
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6 CHECKLIST FOR COMPLETED INSTALLATION
6.1 Moving and Placing Equipment
1. Unpack and check received material.
2. Proper clearance for service access has been maintained around the equipment.
3. Equipment is level and mounting fasteners are tight.
4. Proper evaporator drip pan clean-out system is in place.
5. Check that curb and counter-flashing is sealed on roof-top units.
6.2 Electrical Installation Checks
1. Supply voltage and phase matches equipment nameplate.
2. Power wiring connections completed to the disconnect switch.
3. Power line circuit breakers or fuses have proper ratings for equipment installed.
4. All internal and external high- and low-voltage wiring connections are tight.
5. Confirm that unit is properly grounded to an earth ground.
6. Control transformer setting matches incoming power.
7. Electrical service conforms to national and local codes.
8. Confirm that power wiring connections to the utility box are completed.
6.3 Other Installation Checks
1. Ducting complete.
2. Confirm ducting is attached to unit and building structure, and any openings around supply- and return-duct
connections are sealed.
3. Filters installed.
4. Check fasteners that secure the evaporator fan motors
5. All fans are free of debris.
6. Seal openings around electrical connections and make sure that the seals are water-tight.
7. Installation materials and tools have been removed from equipment (literature, shipping materials, construction
materials, tools, etc.).
8. Check for refrigerant leaks.
6.4 BMS and Sensor Installation Checks
1. CAT5 cables are installed from each unit and the network switch, and all cables have RJ45 jacks on each end.
2. The network switch/Liebert® vNSA panel (if present) is installed and powered.
3. Confirm the static-pressure-sensor transducer (if present) is installed in the room and wired back to the DSE™
Packaged Solution unit
4. Confirm the supply-air sensor is installed in the best location possible to obtain a temperature reading
representative of the supply air in the duct or plenum serviced by the unit and that the sensor is wired back to
the unit control panel.
5. All remote and 2T rack sensors (if present) are installed and wired using CANBUS cables.
6 Checklist for Completed In stallation
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7 INITIAL START-UP CHECKS ANDCOMMISSIONINGPROCEDURE
FORWARRANTYINSPECTION
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 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 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.
NOTICE
Risk of improper electrical connection of three-phase input power. Can cause backward compressor rotation
and unit damage. Service technicians should use a gauge set on the system during the initial start up to verify
that the three-phase power is connected properly. Three-phase power must be connected to the unit line
voltage terminals in the proper sequence so that the compressors rotate in the proper direction. Incoming
power must be properly phased to prevent compressors from running backward. We recommend checking the
unit’s phasing with proper instrumentation to ensure that power connections were made correctly. We also
recommend verifying discharge and suction pressures during start up to ensure that the compressors are
running in the correct direction.
• Confirm that all items on Checklist for Completed Installation on page29 have been done.
• Locate “Liebert® DSE™ Packaged Solution Warranty Inspection Check Sheet” in the unit’s electric panel.
• Complete “Liebert® DSE™ Packaged Solution Warranty Inspection Check Sheet” during start-up.
• Forward the completed “Liebert® DSE™ Packaged Solution Warranty Inspection Check Sheet” to your local
sales office. This information must be completed and forwarded to validate warranty.
• Contact your local sales representative or technical support if you have any questions or problems during unit
start-up and commissioning. Visit https://www.Vertiv.com/en-us/support/ or call 1-800-222-5877 for contacts.
7 Initial Start-up Checks and Commissi oning Procedure forWarrantyIns pection
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8 MAINTENANCE
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 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 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.
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.
The Liebert® DSE™ Packaged Solution is a single component in the facility heat-removal system. Proper application and
maintenance of the entire system is critical to the life and reliability of the thermal-management units.
• Good maintenance practices are essential to minimizing operation costs and maximizing product life.
• Read and follow monthly and semi-annual maintenance schedules included in this manual. These MINIMUM
maintenance intervals may need to be more frequent based on site-specific conditions.
• See the Liebert®iCOM™ user manual, SL-31075, available at www.Vertiv.com, for instructions on using the
controller to predict some service maintenance intervals.
• We recommend the use of trained and authorized service personnel, extended service contracts and factoryspecified replacement parts. Contact your Vertiv sales representative.
8 Maintenance
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8.1 Service Access for Unit Maintenance
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.
The DSE™ Packaged Solution includes a service door, see Figure 8.1 on the facing page, for access to perform
maintenance on components inside the thermal management unit. An electric enclosure next to the door provides a 120-V
outlet and switches for lights inside the unit.
CAUTION: Risk of low-hanging panels. Can cause injury or equipment damage. Wear appropriate, OSHAapproved PPE when entering and working within the enclosure.
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Figure 8.1 Service Door Lighting, and Outlet for Perimeter and Rooftop Units
8 Maintenance
Item Description
1 Enclosure for air-proof and filter-clog switch
2 Separate, 120-V, field-supplied power feed for lights and convenience outlet
3 Service-access door to evaporative section and filter replacem ent
8.2 Filters
NOTICE
Risk of improper filter installation. Can cause filter collapse and airflow reduction.
To maximize the performance and reliability of the equipment, use only Vertiv filters. Contact your Vertiv representative to
order replacement filters.
Verify that filters are installed and positioned so the air-flow direction marked on the filter is the same direction as unit air
flow.
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8.2.1 Replacing the Filters
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.
1. Enter the unit through the service access door, and locate the supply-side air filters in front of the heat
exchanger.
2. Using the slot on the filter rack, shown in the following figure, remove all 30 filters:
3. Referring Figure 8.2 below, install the new air filters in each column as follows:
• At the slot, insert the bottom two filters.
• Add filters, and slide them upward until the column is filled.
• The last filter is installed in the slot in the column.
Figure 8.2 Supply Fan Air Filters in the Rack
Item Description
1 Slot in filter rack
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8.3 Evaporator Fan Maintenance
WARNING! Risk of very heavy, 250-lb (113.4-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.
Consult the factory for fan, blower, or inverter maintenance. Do not attempt to service or remove the fans without first
contacting Vertiv support at 1-800-222-5877.
8.3.1 Fan Assembly Troubleshooting
Any safety hazards stemming from the device must be re-evaluated once it is installed in the end device.
Do not make any modifications, additions or conversions to the fan assembly without the approval of Vertiv.
WARNING! Risk of electric shock. Can cause serious injury or death. Open all local and remote electric powersupply disconnect switches and verify with a voltmeter that power is off before opening the fan motor
electric-connection enclosure. Use only fully-trained and qualified HVAC technicians to replace or perform
maintenance on the EC fans.
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.
8 Maintenance
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 70dB(A) may arise. Take
appropriate technical safety measures. Operating personnel must wear appropriate, OSHA-approved PPE
and observe all appropriate hearing-protection safety requirements.
CAUTION: Risk of contact with hot surfaces. Can cause injury. The 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, OSHAapproved PPE when working on or near hot components.
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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.
NOTE: Do not assume that the fan blades will not start to spin. If the motor is in a fault condition, it will safely shut
down. Once the fault condition is cleared, there are certain conditions in which the motor will automatically resume
operation.
8.3.2 Fan Assembly Maintenance
Inspect the fan assembly at regular intervals. Keep the assembly clean and clear of dust, dirt, and other debris.
8.3.3 Blower Motor Lubrication
The motor is initially lubricated at the factory.
• Contact the motor manufacturer for the lubrication interval for motor bearings.
• Contact the motor manufacturer to determine the type of grease to use for lubrication.
8.3.4 Removing Fan Assembly
Do not attempt to remove the fan assemblies without first contacting Vertiv Technical Support at 1-800-222-5877.
8.4 Electronic Expansion Valve (EEV) Maintenance
The EEV controls superheat through the Liebert® iCOM™ controls by actively measuring suction pressure via a transducer
attached to the suction-line rotalock and suction temperature via a thermister strapped to the suction line. The EEV actively
adjusts the orifice size and resulting mass flow of refrigerant to maintain the superheat setpoint (set in Liebert® iCOM). The
EEV is used in place of the standard thermal expansion valve (TXV).
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.
NOTE: Intermittent loss of subcooling may result in EEV/superheat instability.
8.5 Compressor Maintenance
WARNING! Risk of over-pressurization of the refrigeration system. Can cause explosive discharge of highpressure 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.
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8.5.1 Compressor Oil
NOTICE
Risk of improper compressor lubrication. Can cause compressor and refrigerant system damage.
Failure to use oil types, viscosities and quantities recommended by the compressor manufacturer may reduce
compressor life and void the compressor warranty.
• Do not mix polyolester (POE) and mineral-based oils.
• Do not mix oils of different viscosities.
• Consult Vertiv technical support or the compressor manufacturer if questions arise.
8.5.2 Replacement Compressors
Replacement compressors are available through your Vertiv sales office. If the unit is under warranty, the replacement
compressor must be obtained from and the original compressor returned to your local Vertiv sales office. Compressors are
shipped in reusable packaging, and the original compressor should be returned in the same packaging.
8.5.3 Rotalock Valve on Digital-Scroll Compressors
WARNING! Risk of explosive discharge of high-pressure refrigerant. Can cause serious injury. Neutral and
service ports on the rotalock valve do not have a valve core. Front-seat the service valves and relieve
pressure from the compressor before loosening a part or a component attached to the service valve. Follow
local codes to properly reclaim refrigerant.
• The Neutral port remains open to the compressor side in all positions of the valve stem, see Figure 8.3 on the
next page. A high-pressure cut-out switch or low-pressure switch/transducer will be connected to this port.
• The Service port is closed to the system when valve stem is back-seated, see Figure 8.3 on the next page. It is
open to the system as soon as the valve is adjusted away from the back-seated position.
8 Maintenance
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Figure 8.3 Rotalock Valve
Item Description
1 Service port (gauge)
2 Front seat
3 Back seat
4 Compressor side of v alve
5 Neutral port
6 System side of valve
8.5.4 Unloading Solenoids on a Digital Scroll Compressor
When replacing a digital-scroll compressor, the digital solenoid valve and coil must be replaced. The compressor and valve
kit are shipped separately. The valve kit must be field-brazed to the top of the compressor in proper orientation and
supported with the original factory bracket.
8.5.5 Compressor Electrical Failure (Motor Burnout)
If a burnout has occurred, a full system clean-out is required. If not cleaned, compressor and system problems will continue.
Consult the factory for compressor maintenance. Do not attempt to remove the compressor without first contacting Vertiv
support at 1-800-222-5877.
8.5.6 Replacing a Compressor with Electrical Failure (MotorBurnout)
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.
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WARNING! Risk of over-pressurization of the refrigeration system. Can cause explosive discharge of highpressure 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.
NOTE: Release of refrigerant to the atmosphere is harmful to the environment. Refrigerant must be recycled or
discarded in accordance with federal, state, and local regulations.
1. Attach suction and discharge gauges to access fittings.
2. Recover refrigerant using an approved recovery procedure and equipment. Use a filter drier when charging the
system with recovered refrigerant.
3. Remove marked pressure transducer and discharge pressure switch. Disconnect all electrical connections.
4. Remove failed compressor.
5. Follow compressor manufacturer’s suggested clean out procedures.
6. Install replacement compressor and make all connections. Replace unloading solenoid.
7. Evacuate, charge and operate per the appropriate procedure per local codes:
NOTICE
Risk of improper component re-installation. Can cause equipment damage.
Identify and mark location of suction pressure transducer and discharge pressure switch. These devices look
similar and they must be reinstalled in their original location.
8.5.7 Compressor Mechanical Failure
If mechanical failure of the compressor has occurred, only the compressor needs replaced. A full system clean-out is not
required..
8.5.8 Replacing a Compressor with Mechanical Failure
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 over-pressurization of the refrigeration system. Can cause explosive discharge of highpressure 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.
NOTE: Release of refrigerant to the atmosphere is harmful to the environment. Refrigerant must be recycled or
discarded in accordance with federal, state, and local regulations.
1. Front-seat service valves to isolate the compressor. Recover refrigerant using an approved recovery procedure
and equipment
2. Remove failed compressor.
8 Maintenance
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3. Keep the replacement compressor sealed until installation is complete to the point that the system isolation
valves are ready to be engaged. Keep exposure of the POE oil in compressor to atmosphere to a minimum.
4. Install replacement compressor, replace gaskets or seals on service valves, and make all connections. Replace
unloading solenoid if equipped.
5. Once the compressor is completely installed, keep isolation valves closed to the system and open to
compressor. Add dry nitrogen to compressor and check all connections for leaks. With no leaks confirmed,
evacuate the isolated compressor prior to introducing to the rest of the system.
6. When evacuating the isolated compressor volume, pull a vacuum of 500microns with no decay above
1000microns within 20minutes.
Once evacuation requirements of compressor are met, open the valves to open the compressor to the system.
7. Check compressor and system operation. Make any necessary adjustments for proper equipment operation.
8.5.9 Refrigerant Piping and Charging
WARNING! Risk of over-pressurization of the refrigeration system. Can cause explosive discharge of highpressure 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.
CAUTION: Risk of excessive refrigerant line pressure. Can cause tubing and component rupture resulting in
equipment damage and personal injury. Do not close off refrigerant-line isolation valve for repairs unless a
pressure-relief valve is field- installed in the line between the isolation valve and the check valve. The
pressure-relief valve must be rated 5% to 10% higher than the system-design pressure. An increase in
ambient temperature can cause the pressure of the isolated refrigerant to rise and exceed the system-design
pressure rating (marked on the unit nameplate).
NOTE: Consult local building and plumbing codes for installation requirements of additional pressure relief devices
when isolation valves are field installed. Do not isolate any refrigerant circuits from over pressurization protection.
NOTICE
Risk of oil contamination with water. Can cause equipment damage. Refrigerant charge must be weighted into
air cooled compressorized systems before they are started. Starting digital scroll compressors without proper
refrigerant charging can cause the compressors to operate at less than 5°F (–15°C) evaporator temperature and
at less than 52 psig (358 kPa).Operation for extended periods at less than 52 psig (358 kPa) can cause
premature compressor failure.
NOTICE
Risk of improper refrigerant charging. Can cause equipment damage. Refrigerant charge must be weighted
into air-cooled compressorized systems before they are started. Starting digital scroll compressors without
proper refrigerant charging can cause the compressors to operate at less than than 5°F (–15°C) evaporator
temperature and at less than 52 psig (358 kPa). Operation for extended periods at less than 52 psig (358 kPa)
can cause premature compressor failure.
8.5.10 Refrigerant Charge Requirements for Air Cooled Systems
Table 8.1 on the facing page and Table 8.2 on the facing page provide the refrigerant charge and oil requirements for the
Liebert®DSE Packaged Solution.
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Table 8.1 DP400 Refrigerant Charge
Requirements
Circuit R410A (lbs.) Additional POE Oil (o z.)
1 88.5 50
2 88.5 50
3 88.5 50
4 88.5 50
Table 8.2 DP500 Refrigerant Charge
Requirements
Circuit R410A (lbs.) Additional POE Oil (o z.)
1 88.5 50
2 88.5 50
3 88.5 50
4 88.5 50
8.5.11 Additional Oil Requirements for Scroll and Digital Scroll Compressors
NOTICE
Risk of improper compressor lubrication. Can cause compressor and refrigerant system damage. Failure to use
oil types, viscosities and quantities recommended by the compressor manufacturer may reduce compressor
life and void the compressor warranty. See Evacuation, Leak Testing, and Charging on the next pagebelow for
the recommended oil for the system.
• Do not mix polyolestor (POE) and mineral-based oils.
• Do not mix oils of different viscosities.
• Consult your Vertiv sales representative, visit https://www.Vertiv.com/en-us/support/, or contact the
compressor manufacturer if questions arise.
Table 8.3 Compressor Type and Oil Type
Compressor Type Oil Type
Copeland Scroll and Digital Scroll POE Oil ISO 32 Centistroke Viscosity
1
Use Copeland P OE O il ULTRA 32 -3MAF or other Copeland approved oils. DPN003950, Rev. 5.
See Refrigerant Charge Requirements for Air Cooled Systems on the previous page
After the system has been fully charged with refrigerant, use a hand pump to add the additional oil at the suction side of the
system while the system is running.
1
8 Maintenance
The amount of oil added by field service must be recorded on the tag marked "Oil Added Field Service Record" that is
attached to each compressor. The date of oil addition must also be included.
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8.5.12 Evacuation, Leak Testing, and Charging
Evacuation and Leak Testing Air Cooled Systems
For proper leak check and evacuation, you must open all system valves and account for all check valves.
NOTE: The system includes a factory installed check valve and an additional downstream Schrader valve with core in
the compressor discharge line. Proper evacuation of the condenser side of the compressor can be accomplished only
using the downstream Schrader valve. See the appropriate piping schematic for your system in Submittal Drawings
on page65.
1. Starting with Circuit #1, open the services valves and place 150 PSIG (1034kPa) of dry nitrogen with a tracer of
refrigerant. Check system for leaks with a suitable leak detector.
2. With pressure still in Circuit #1, open the compressor service valves in Circuit #2.
• If pressure increases in Circuit #2, the system is cross-circuited and must be re-checked for proper
piping.
• If there is no pressure increase, repeat Step 1 on Circuit #2.
3. After completion of leak testing, release the test pressure, (observe local code) and pull an initial deep vacuum
of 500 microns on the system with a suitable pump.
4. After 4 hours, check the pressure readings and, if they have not changed, break vacuum with dry nitrogen. Pull
a second and third vacuum to 500 microns or less. Re-check the pressure after 2 hours.
When the three checks are complete, remove the jumper hose from the service valve fitting and the condenser, and proceed
to Charging Air Cooled Systems below
Charging Air Cooled Systems
NOTICE
Risk of improper refrigerant charging. Can cause equipment damage.
R-410A is a blended refrigerant and must be introduced and charged from the cylinder only as a liquid.
When adding liquid refrigerant to an operating system, it may be necessary to add the refrigerant through the
compressor suction service valve. Care must be exercised to avoid damage to the compressor. We recommend
connecting a sight glass between the charging hose and the compressor suction service valve. This will permit
adjustment of the cylinder hand valve so that liquid can leave the cylinder while allowing vapor to enter the
compressor.
NOTICE
Risk of improper operation. Can cause compressor failure.
Operating the unit with the EEV closed can cause compressor failure. The reheat and humidifier are disabled. A
minimum of 20 psig (138 kPa) must be established and maintained for the compressor to operate. The
charging function can be reset as many times as required to complete.
To charge the system:
1. Check the nameplate on the unit for refrigerant type to be used.
2. The unit must be operating during charging. Refer to Checklist for Completed Installation on page29
3. Calculate the amount of charge for the system. See Refrigerant Piping and Charging on page42
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4. Accurately weigh in as much of the system charge as possible before starting the unit. Do not exceed the
calculated charge by more than 0.5 lb (0.37 kg).
5. Close the heat-rejection disconnect switch.
• We recommend charging the unit with the return-air setpoint between 75°F and 85°F (24°C and 29°C).
• The return-air temperature to the unit being charged must be stable and must be maintained greater
than 65°F (18°C). If this is not possible due to lack of heat load, then the load banks must be used to offset
the cooling load during start-up. See Table 8.4 below.
6. Close the Liebert®DSE disconnect switch.
7. In the Service menu of the Liebert® iCOM controller, select Diagnostics/Service > Diagnostics.
a. Enable Manual Mode.
NOTE: Manual Mode will timeout after 30 minutes.
b. In Evaporator Fan options, set Motors to ON to operate the fan during Manual Mode.
c. In In Compressor Circuit 1 options, set Compressor Mode to Charge to operate the compressor at full
capacity, energize the blower motor, and open the EEV.
d. Reset the charge function as many times as needed to complete unit charging.
NOTE: You must establish and maintain a minimum of 20 psig (138 KPa) for the compressor to operate.
e. Repeat Step 7 for Compressor Circuit 2.
8. Check the refrigerant level in the refrigerant-level sight glasses on each receiver after the unit has been
operating for at least 15 minutes.
9. Adjust the refrigerant level in each circuit to meet the level shown in Table 8.4 below
10. After adjusting the refrigerant, allow the system to operate for another additional 15 minutes before checking
need of further adjustment.
11. Repeat the procedure for the second circuit.
NOTE: A digital-scroll compressor can have a clear unit sight glass on the liquid line only when operating at 100%
capacity. When operating with a receiver, the unit sight glass might not become clear even when operating at 100%
capacity. When operating below 100%, the unit sight glass may show bubbles with each 15 second unloading cycle.
Table 8.4 Refrigerant Level in Sight Glasses at Outdoor Temperatures
Temperature Sight Level
40°F (4.5°C) and lower Bottom sight glass is 3/4 full
40°F (4.5°C) and higher Bottom sight glass is full
If the return air temperature cannot be m aintained between 75°F a nd 85°F (24°C and 29°C) due to lack of load, then the liquid-level receiver must be
adjusted to the following if return air is between 65°F and 75°F (18°C and 24°C):
40°F (4.5°C) and lower Charge to the bottom of the top sight glass.
40°F (4.5°C) and higher Top sight glass is 1/4 full
8 Maintenance
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8.6 General Condenser Maintenance
Periodic attention is necessary for continued satisfactory operation of your unit. Restricted air flow through the condenser
coil, reduced air flow from non-functionin fans and low refrigerant system charge levels will reduce the operating efficiency
of the unit and can result in high condensing temperatures and loss of cooling. In winter, do not permit snow to accumulate
around the sides or underneath the condenser coil.
Monthly and semi-annual inspections and maintenance are recommended for proper system operation. Use copies of
Preventive Maintenance Checklist on page59 for each of these inspections.
8.7 Condenser Cleaning
Keeping the coils in the outdoor unit clean is an important factor in maintaining peak efficiency, reliability, and long life of
the equipment. The unit will operate more efficiently with frequent cleanings. If you delay cleaning until heavy build-up
occurs, head-pressure problems with the evaporator units can develop.
8.7.1 When to Clean the Condenser Coil
Normal conditions typically dictate cleaning twice a year, in spring and fall. On-site or area conditions such as cottonwood
trees, construction, etc., can increase cleaning frequency. On your standard monthly preventive maintenance schedule, we
recommend a visual inspection of the coil to monitor conditions.
8.7.2 What to Use to Clean the Condenser Coil
NOTICE
Risk of improper cleaning agent selection, including non-base paint solvents. Can cause building and
equipment damage and loss of refrigerant charge.
Using acid-based or sodium hydroxide-based cleaners can damage the drycooler coil and cause a loss of
charge. This could cause equipment damage as well as damage to the surrounding structure.
Start with removing dirt, leaves, fibers, etc. with a soft brush or vacuum cleaner fitted with a soft-brush attachment. Do not
use a wire brush or scrape the coil with a metal vacuum hose. The best overall coil cleaner is plain water. If the coil is
maintained and cleaned at regular intervals, water is sufficient to remove dirt and debris from the fins. Water pressure from
a garden hose and sprayer usually works well. If a pressure washer is used, make sure that the equipment is set to a lower
pressure setting and that the nozzle is set to the fan spray, not stream. Otherwise, damage to the fins could result. If a
cleaner is required, we recommend using a neutral cleaner, neither acidic nor base. Acid-type cleaners can damage the coil
fins and surrounding areas. Many sites do not allow the use of acidic cleaners for environmental reasons.
8.7.3 Cleaning the Condenser Coil
The condenser coil is accessible through the cleaning window, which allows you to clean the coil without removing the fans
from the unit.
To clean the coil:
1. Disconnect the power supply before working on the unit.
2. Open the cleaning window(s) on the side of the condenser by loosening the mounting screws.
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3. Insert a spray nozzle on the end of a suitable extension and apply the water/cleaning solution, working back
and forth across the coil face.
The solution pushes dirt and debris out the bottom of the coil.
• If you are using a cleaner along with the spraying process, follow recommended manufacturer
instructions and be sure to rinse the coil thoroughly. Any residue left on the coil can act as a magnet to
dirt.
4. Reinstall the cleaning window and reconnect the power supply to the condenser.
5. Coils will possibly retain water after cleaning and rinsing, so manually reverse the fans briefly using condenser
controls to speed drying of the coils and prevent a possible high-head-pressure condition when the condenser
is put back into service.
NOTE: Spraying the coil from the outside repeatedly can push a majority of the dirt to the inner section of the fins and
continue to restrict air flow. Keep in mind you may not have the luxury of shutting the unit down for an extended time.
A scheduled shutdown with the operator may be in order.
8.7.4 Cleaning the Condenser Fan
• Clean the EC fan with water only when temperatures are greater than 50°F (10°C)
• Make sure that no water gets into the inside of the motor.
• Do not hold the jet spray directly on the motor openings and seals.
• During cleaning work using a jet spray, no guarantee is assumed regarding corrosion formation/paint adhesion
for unpainted/painted fans.
8.8 Replacing the Condenser Fan
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 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 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 fan electric
control/connection enclosures. Use only fully-trained and qualified HVAC technicians to perform
maintenance on the fans.
8 Maintenance
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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.
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 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 lbs. (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.
NOTE: If at any time a parameter is entered and the condenser display does not show 888 or if the display shows Err,
re-enter the parameter. If the display still shows Err after ENT is pressed, power cycle the control board by
unplugging P24, waiting 15 seconds and plugging P24 back in. Contact the factory if the parameter still displays Err
after ENT is pressed.
To replace the fan:
1. Turn Off power to the unit using the disconnect.
2. Use a voltmeter verify that voltage is no longer present at the unit. Wait a minimum of 10minutes to allow the
EC fan capacitors to discharge before proceeding.
3. Remove the fan cover, disconnect electrical connections internal to the EC fan and remove the cable glands
from the EC fan to be replaced; See Figure 8.4 on the facing page, and Figure 8.5 on page50.
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Figure 8.4 Internal Wiring of Ziehl-Abegg Fan in Condenser
Item Description
1 GND
2 Edge of cable's outer jacket should only extend far enough into the enclosure to make the electrical connections.
3 N ot used on last fan.
4 Communication-cable connection to the nex t fan. Not used on last fan.
5 Communication-cable connection from the previous fan or electrical box.
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Figure 8.5 Internal Wiring of Small and Medium EBM Fan in MCS or MCM Model Condenser
Item Description
1 Wiring terminal detail.
2 Communication cable from the previous fan or from the electric box.
3 Communication cable connected to the next fan (not used on the last fan).
4 Not used on last fan.
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Figure 8.6 Internal Wiring of EBM fan in Condenser
Item Description
1 Wiring terminal detail.
2 Not used on last fan.
3 Must be cable-tied together a way from high-voltage terminals
4 Edge of out cable jacket should only extend far enough into enclosure to be able to make the electrical connections.
5 GND
6 Communication cable connected to the next fan (notused on the last fan).
7 Communication cable from the previous fan or from the electric box.
4. Remove hardware that attaches the EC fan to the condenser.
5. Use lifting equipment or an adequate number of personnel to remove the EC fan from the condenser.
NOTE: A spreader bar may be required for the lifting equipment if only one technician is performing the fan
replacement.
6. Install a spreader bar over the new EC fan if only one technician is performing the fan replacement.
7. Verify that the wire harness on the new EC fan is secured out of the way before lifting the fan.
8. Verify that the lifting cable/chains are not in contact with fan blades before lifting the new fan into place on the
condenser.
9. Install the new fan in the condenser and connect the mounting hardware.
10. Verify that the fan blades rotate freely when installed in unit.
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11. Install the new cable glands included with the new EC Fan. Torque for the cable glands is:
• 630 mm and 710 mm fans: 19.5to24.75 in-lb (2.2 to 2.8 Nm)
• 800 mm fans: 32.75 to 38 in-lb (3.7 to 4.3 Nm)
Dispose of the old cable glands once the new glands are installed.
12. Add a compression nut to the wire. Do not tighten the nut.
13. Reconnect the wiring to the proper terminals and verify that the run jumper is in place. See Figure 8.4 on
page49, and Figure 8.5 on page50, for wiring details.
• The torque for the electrical terminals is 11.5 in-lb (1.3 Nm). Tighten the compression nut to a torque of 22
in-lb (2.5 Nm).
14. With the PCB powered, the board display should read F00.
15. Press the ESC button.
16. Press the UP-arrow button once:
• If P- - is displayed, perform step 17.
• if P- - is not displayed, perform steps 18 through 46.
17. If P- - is displayed, press the ENT button to enter the P- - Menu.
The P- - Menu allows compact set-up/preparation of the condenser in the factory or in the field. Use the
functions described in Table 8.5 below, to establish a default control configuration for the board.
NOTE: The complete list of P--, C--, and F-- parameters is located inside the lid of the electrical-box panel.
Table 8.5 P-- Menu Items and Definitions
Item
Meaning Default No tes
ID
P01
P02
P03
P04
P05
Enter
Preparation
Mode
Automatic
VSD
Configuration
Refrigerant
Type
Number
of Circuits
Liebert®
Lee Temp
Option
Settingthis value to ‘1 ’ enables preparation mode. All other ‘ P—‘m enu items are disabled until this value is ‘1 ’. N ote
that control operations may be a ffected during preparation m ode, therefore the cooling unit should be off. Setting this
0
value back to ‘0’ creates new default values based upon selections in this menu. After defa ult values are established,
the board exits preparation mode and reboots.
This item should only be used to addressthe VSDs for the unit. The value entered indicates the model of the VSD:
1 – EBM
2 – Z iehl-Abegg
1
3 – Fans Tech
All fa ns must be the same m odel to use this parameter. When ENT is pressed, the board will operate and power
contactors for the VSDsand assign ModBus addresses. This procedure may take up to 5minutes to com plete.
1 = R22
2
2 = R407C
3 = R410A
1 = Single Circuit
1
2 = Dual Circuit
0 = No Lee Temp installed
0
1 = Liebert®Lee-Temp installed
P06 Condenser 1 0 = Small
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18. Turn the power On.
19. The control board flashes F00 on the display when it has completed its boot cycle.
20. Press the ESC button.
21. Use the UP or DOWN arrow button until C-- displays.
22. Press the ENT button.
23. Use the UP or DOWN arrow button until C03 displays
24. Press the ENT button.
25. Use the UP or DOWN arrow button to select one of three options:
Table 8.6 Configuration Code Values
Configuration C ode F an # Value
C03 Fan 1
C04 Fan 2
C05 Fan 3
C06 Fan 4
0 = No Fan
1 = EBM Papst
2 = Ziehl-Abegg
26. Press the ENT button.
27. If the new value is entered into the control board, the display flashes "888."
28. Press the ESC button to display C03 .
29. Repeat steps 20 through 27 for the remaining fans’ configuration codes, C04, C05 and C06.
30. Unplug all the contactor output plugs except for the fan to be addressed. Plugs are:
• P23 = Fan 1
• P27 = Fan 2
• P28 = Fan 3
• P29 = Fan 4
31. Wait 30 seconds.
32. Use the UP or DOWN arrow button to select one of the following parameters.
8 Maintenance
The correct parameter depends on the supplier of the fan that will be addressed.
• C00—EBM Papst fan
• C01—Ziehl-Abegg fan
33. Press the ENT button.
34. Use the UP or DOWN arrow button to the correct fan address number. Fan 1 should be 1 (fan closest to electric
panel end). Fan 2 should be 2, etc.
35. Press the ENT button. The display flashes "888 " when the command is accepted.
36. Press the ESC button for the parameter to be shown on the display.
37. Repeat steps 30 through 36 for the rest of the fans that need to be addressed.
38. After the last fan is addressed, unplug the power plug, P24, from the control board, and wait 30 seconds.
39. Plug all the contactor output plugs back into the board in their correct positions.
40. Plug P24 back into the control board.
41. After the control board completes its boot cycle and all the contactors are energized, wait 5seconds.
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42. Press the ESC button.
43. Use the UP or DOWN arrow button until A-- is on the display.
44. Press ENT button.
45. Use the UP or DOWN arrow button to see if any of the following errors are shown.
115: Unable to communicate with Fan 1.
215: Unable to communicate with Fan 2.
315: Unable to communicate with Fan 3.
415: Unable to communicate with Fan 4.
• If any of these errors appear, check the communication wiring at the problem fan and the fan before it.
• If the wiring is correct and properly wired to the terminal, repeat the fan addressing procedure in steps
30 through 36.
46. If none of the errors listed in step 45 displays, press the ESC button.
8.8.1 Verifing the Fan Address
To verify that each fan has a unique address:
1. Use the UP or DOWN arrow button until C-- displays.
2. Press the ENT button.
3. In the Manual/System Control Selection parameter use the UP or DOWN arrow button until C24 displays.
4. In the Manual Control configuration parameter, press the ENT button.
5. Use the UP or DOWN arrow button to select 0.
6. Press the ENT button.
The reads "888" if the command is accepted.
7. Press the ESC button to display C24 .
8. Use the UP or DOWN arrow button until C34 displays.
9. Press ENT button.
If Fan 1 is running, the fans speed should display in terms of percentage of full speed. If Fan 1 is not running, 0.00
should display.
10. Use the UP or DOWN arrow button to enter 100% speed.
11. Press the ENT button.
The display reads "888" if the command is accepted.
• Fan 1 should speed up to 100%, and all the other fans should stay the same speed.
12. If Fan 1 is not running or if any of the other fans also speed up to 100%, steps 30 through 36 of Replacing the
Condenser Fan on page47, must be repeated.
13. Press the ESC button for the parameter to be shown on the display.
14. Repeat steps 3 through 8 for the rest of the fans, if present.
• C35: for Fan 2.
• C36: for Fan 3.
• C37: for Fan 4.
NOTE: All fans should be at 100% speed.
15. Use the UP or DOWN arrow button until C24 displays.
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16. Press the ENT button.
17. In the System Control configuration parameter, use the UP or DOWN arrow button to select 1.
18. Press the ENT button.
The display flashes "888" if the command is accepted.
19. Press the ESC button to display C24.
All fans should return to a normal speed based on the pressure input and the state of indoor unit’s compressor.
Notes on the Premium Efficiency Control Board
• J6 is the CANbus termination jumpers. If the condenser is the last device in the CANbus communication line,
the jumper must be placed between Pins 1 and 2 of J6. If the condenser is not the last device in the CANbus
communication line, then the jumper on J6 must be placed on Pins2 and 3. CANbus communication errors
may occur if the jumpers are not in the correct positions.
• A jumper must be present at J2. If a jumper is not present, the control board will not boot properly during
power start-up.
8.9 Replacing the Premium Efficiency Control Board
Use these steps to replace the Premium Efficiency Control Board in the condenser.
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 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.
8 Maintenance
8.9.1 Preparing to Replace the Board
1. Verify that the following jumpers are installed on the new board (see Figure 8.7 on the next page):
• Jumper at J4 and J6 on Pins 2 and 3.
• Jumper on J2.
• Jumper on J5 on Pins 1 and 2.
2. Locate the latest revision of the HMI parameters label, 303847P1, included with the new control board.
NOTE: In Figure 8.7 on the next page, J6 is the CANbus termination jumper. J4 is the RS485 service termination
jumper. If the condenser is the last device in the CANbus communication line, the jumper must be placed between
Pins 1 and 2 of J6. If the condenser is not the last device in the CANbus communication line, the jumpers on J6 must
be placed on Pins 2 and 3. If the jumper is not in the correct positions, CANbus communication errors may occur. The
jumper on J4 will always be placed between Pins 1 and 2.
NOTE: In Figure 8.7 on the next page, a jumper must be present at J2. If a jumper is not present, the control board
will not boot properly during power start-up.
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Figure 8.7 Jumper Locations on Control Board
Item Description
1 J4, RS485 service termination jumper
2 J6, Canbus termination jumper
3 J5
4 J2
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8.9.2 Installing the Replacement Board
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 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.
1. Turn Off the disconnect switch on the condenser enclosure cover.
2. Open the control enclosure cover.
3. Manually turn On the disconnect switch.
NOTE: Power is On and a shock hazard exists with exposure to hazardous voltage components.
4. If the board can still be powered up and has a display, record the parameter settings.
• To obtain parameters go to the C-- menu and press the UP or DOWN arrow button to read and record
the values for C03-09 and C27.
5. Record all of the DIP switch positions for the CANbus DIP switch package. Retain these for setting up the new
board.
6. Record the positions of the jumpers for J2, J4, J5 and J6 on control board in the unit. Retain these for setting up
the new board.
7. Disconnect power from the condenser by turning Off the main disconnect switch.
8. Use a voltmeter to verify that voltage is no longer present in the unit.
9. Remove the plugs and field-installed wires from the old board. Note the polarity for the CANbus wiring going to
P49 and P50, if present.
10. Mark wires P49-1, P49-3, etc, if they are not already marked.
11. Remove the mechanical fasteners holding the control board in place and remove the old control board.
12. Install the new control board using the fasteners removed in step 11.
13. Reattach the plugs. Refer to the hot-stamps on the wire harnesses that correspond to the correct plug on the
board. Verify that the plugs are installed properly.
14. Change the CANbus DIP switch positions so they match the control board that was removed. If the condenser is
the second condenser on the CANbus communication line, set Position 1 of the CANbus DIP switch from On to
Off.
15. Change the jumper positions for J2, J4, J5 and J6 to match the control board that was removed. If the
condenseris the last device on the CANbus communication line, move the jumper at J6 from Pins2 and 3 to
Pins 1 and 2 (see Figure 8.7 on the previous page).
16. Power up the unit.
17. Change the parameters to match the parameters from the control board that was removed if they were
obtained from the old board in step 4. See step 18 if the parameters were unavailable.
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18. If the old board parameters were unavailable, use the new HMI label included in kit to obtain the proper
settings. Parameters C03, C04, C05 and C06 must be programmed with the proper EC fan supplier used on
the unit.
19. Address the fans (refer to Replacing the Condenser Fan on page47).
20. Compare the HMI label on the unit with the latest revision.
• If there are differences, clean and dry the surface of the old HMI label; attach the new label on top of the
old label, covering the old label with the new one.
21. Verify that the control board is reading pressure and temperature.
22. Verify that there are no communication alarms with the fans or with the cooling unit the condenser is serving.
23. Verify proper fan operation by adjusting the cooling unit that this condenser serves so that it calls for cooling.
8.10 Pumped Refrigerant Economizer (PRE)
Your Liebert® DSE™ Packaged Solution includes two Liebert® PRE systems. Refer to the Liebert® EconoPhase Installer/User
Guide, available at www.Vertiv.com, for the maintenance and operation details.
58
Vertiv | D SE Packaged Solution Inst aller/User G uide
Page 63
9 PREVENTIVE MAINTENANCE CHECKLIST
Inspection Date Job Name
Unit Model # Unit Serial Number #
Room Temperature/Humidity °% Ambient Temperature °
Not all units will have all components. To determine your unit’s configuration, compare the Unit Model # above above and
the information in the Components and Nomenclature section.
Good maintenance practices are essential to minimizing operation cost and maximizing product life. Read and follow all
applicable maintenance checks listed below. At a minimum, these checks should be performed semi-annually. However,
maintenance intervals may need to be more frequent based on site-specific conditions. Review the unit user manual and the
iCOM user manual (SL-31075) for further information on unit operation. We recommend the use of trained and authorized
service personnel, extended service contracts, and factory-certified replacement parts. Contact your local sales
representative for more details.
Check all that apply:
Evaporator/Filters
c
Replace/check filters.
c
Wipe section clean.
c
Clean coil.
c
Clean condensate pan.
c
Clean/test filter clog switch operation.
Blower Section (Evaporator Fans)
c
Mounting bolts are tight.
c
Blower wheels are free of debris and spin freely.
c
Motor bearings are in good condition and are lubricated.
c
Check the motor mount.
c
Check/test the air sail switch.
c
Check motor amp draw. Compare to nameplate amps.
#1 L1 _______________ L2 ______________ L3 _______________
#2 L1 _______________ L2 ______________ L3 _______________
#3 L1 _______________ L2 ______________ L3 _______________
#4 L1 _______________ L2 ______________ L3 _______________
Electrical Panel
c
Check fuses.
c
Check the contactors for pitting. Replace if pitted.
c
Check/re-torque wire connections.
9 Preventive Main tenance Checklist
59
Page 64
Controls
c
Check/verify the control operation (sequence).
c
Check/test the changeover devices, if equipped.
Compressors
c
Check oil level.
c
Check for oil leaks.
c
Check compressor mountings (bushings).
c
Check that cap tubes are not rubbing.
c
Check/re-torque wire connections (inside compressor box).
c
Check compressor operation for vibration/noise.
c
Check crank case heater fuses and operation (if equipped).
c
Check suction pressure
Circuit #1 ___________ Circuit #2 __________ Circuit #3 _________Circuit #4 __________
c
Check discharge pressure
Circuit #1 ___________ Circuit #2 __________ Circuit #3 _________Circuit #4 ___________
c
Check superheat
Circuit #1 ___________ Circuit #2 __________ Circuit #3 _________Circuit #4 ___________
c
Check low pressure cut in
Circuit #1 ___________ Circuit #2 __________ Circuit #3 _________Circuit #4 ___________
c
Check high pressure cut out
Circuit #1 ___________ Circuit #2 __________ Circuit #3 _________Circuit #4 ___________
c
Amp draw
Compressor #1A L1 _______________ L2 ________________ L3________________
Compressor #1B L1 _______________ L2 ________________ L3________________
Compressor #2A L1 _______________ L2 ________________ L3________________
Compressor #2B L1 _______________ L2 ________________ L3________________
Compressor #3A L1 _______________ L2 ________________ L3________________
Compressor #3B L1 _______________ L2 ________________ L3________________
Compressor #4A L1 _______________ L2 ________________ L3________________
Compressor #4B L1 _______________ L2 ________________ L3________________
60
Vertiv | D SE Packaged Solution Inst aller/User G uide
Page 65
Condenser
c
c
c
c
c
c
c
c
c
c
c
c
Clean coils.
Fans are free of debris.
Fans are security mounted.
Motor bearings are in good condition.
Check all refrigerant lines for vibration isolation. Support as necessary.
Check for refrigerant leaks.
Check the status indicator lights of surge protection device (if installed).
Check/re-torque wire connections.
Check contactors for pitting. Replace if pitted.
Verify the operation sequence/set points.
Charge verification:
a. Outdoor ambient temperature ____________________
b. Subcooling __________________
c. Indoor unit return air temperature ________________
d. Sight glass level (if Lee-Temp or pumped refrigerant) __________________
Motor amp draw
#1 L1 _______________ L2 ______________ L3 _______________
#2 L1 _______________ L2 ______________ L3 _______________
#3 L1 _______________ L2 ______________ L3 _______________
#4 L1 _______________ L2 ______________ L3 _______________
#5 L1 _______________ L2 ______________ L3 _______________
#6 L1 _______________ L2 ______________ L3 _______________
#7 L1 _______________ L2 ______________ L3 _______________
#8 L1 _______________ L2 ______________ L3 _______________
#9 L1 _______________ L2 ______________ L3 _______________
#10 L1 _______________ L2 ______________ L3 _______________
#11 L1 _______________ L2 ______________ L3 _______________
#12 L1 _______________ L2 ______________ L3 _______________
Pumped Refrigerant Economizer
c
Check for refrigerant leaks.
c
Check/re-torque wire connections.
c
Check contactors for pitting. Replace if pitted.
c
Check pump mounting.
9 Preventive Main tenance Checklist
61
Page 66
MAINTENANCE NOTES
Name
Signature
Company
Make photocopies for your records. Compare readings/information to previous maintenance worksheet.
To locate your local Vertiv representative for Vertiv-engineered parts, check https://www.Vertiv.com/en-us/support/ or Call
1-800-222-5877.
62
Vertiv | D SE Packaged Solution Inst aller/User G uide
Page 67
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
1-800-543-2778
Liebert® Channel Products
1-800-222-5877
Liebert® AC and DC Power Products
1-800-543-2378
A.2 Locations
United States
Vertiv Headquarters
1050 Dearborn Drive
Columbus, OH, 43085, USA
Europe
Via Leonardo Da Vinci 8 Zona Industriale Tognana
35028 Piove Di Sacco (PD) Italy
Asia
7/F, Dah Sing Financial Centre
3108 Gloucester Road
Wanchai, Hong Kong
63
Page 68
This page intentionally left blank
64
Vertiv | D SE Packaged Solution Inst aller/User G uide
Page 69
Appendix B: Submittal Drawings
Table B.1 Submittal Drawings Contents
Docu ment Number Title
Component LocationDrawings
DPN004155 Component Location, Perimeter Unit
DPN004190 Component Location, Rooftop Unit
DPN004592 Component Location, Rooftop Draw Through Unit
Air Flow Schem atic and Duct Connection
DPN004154 Air Flow Schematic, Perimeter Unit
DPN004189 Air Flow Schematic, Rooftop Unit
DPN004558 Air Flow Schematic, Draw Through Rooftop Unit
Planning Dimensions
DPN004465 Equipment Floor Plan Layout for Perimeter and Rooftop Units
DPN004653 Equipment Floor Plan Layout for Rooftop Draw Through Units
DPN004148 Cabinet and Anchor Dimensional Data
DPN004326 Drip Pan Clea n O ut Access and Location
DPN004188 Cabinet and Anchor Dimensional Data
DPN004593 Cabinet and Anchor Dimensional Data, Draw Through Units
DPN004651 Condensate Drain Access and Location
Electrical FieldConnection Drawings
DPN004960 Electrical Connections
DPN005099 Service Door Access 400/500 kW Perimeter Unit
DPN005150 Service Door Access 400/500 kW Draw Through Rooftop Unit
65
Page 70
Condenser
Coils
LIEBERT DSE PACKAGED SOLUTION
COMPONENT LOCATION DIAGRAM
400/500kW PERIMETER UNIT
Blowers
Condenser Fans
Motors
Condenser
Electrical
Cabinet
Automatic Transfer
Switch (optional)
Liebert EconoPhase
Receiver
Evaporator
Coil
Air Filters
Drip Pan
Compressor
Compartment
Liebert EconoPhase
Main Electrical
Cabinet
Removable Lifting Lugs
(Typ. 6 Plcs.)
Form No.: DPN001040_REV4
DPN004155
Page :1 /1
REV : 4
REV DATE : 1/19
Page 71
LIEBERT DSE PACKAGED SOLUTION
Condenser Fans
COMPONENT LOCATION DIAGRAM
400/500kW ROOFTOP UNIT
Blowers
Condenser
Coils
Condenser
Electrical
Cabinet
Automatic Transfer
Switch (optional)
Liebert EconoPhase
Receiver
Motors
Evaporator
Coil
Air Filters
Drip Pan
Compressor
Compartment
Liebert EconoPhase
Main Electrical
Cabinet
Removable Lifting Lugs
(Typ. 6 Plcs.)
Form No.: DPN001040_REV4
DPN004190
Page :1 /1
REV : 3
REV DATE : 1/19
Page 72
Condenser Coils
Condenser
Electrical
Cabinet
Customer Disconnect
Enclosure
LIEBERT DSE PACKAGED SOLUTION
AIRFLOW SCHEMATIC
400/500kW ROOFTOP DRAW THRU UNIT
Condenser Fans
Evaporator
Coil
Drip Pan
Air Fliters
Liebert EconoPhase
Rear of Unit
Compressor
Compartment
Liebert EconoPhase
Main Electrical
Cabinet
Exterior Light
(optional)
Main Electrical
Cabinet
Rear of Unit
Form No.: DPN001040_REV4
DPN004592
Page :1 /1
Motors
Supply Blowers
Drain
Removable Lifting Lugs
(Typ. 6 Plcs.)
Receiver
Liebert EconoPhase
REV : 3
REV DATE : 10/19
Page 73
AIRFLOW SCHEMATIC
LIEBERT DSE PACKAGED SOLUTION
400/500kW PERIMETER UNIT
Left Side of Unit
Return Air
from Data Center
Optional Factory Installed
Gravity Damper
(not shown for clarity)
Supply Air
to Data Center
3/4"
18mm
Available space to
attach duct flange
with Gravity Damper
2"
51mm
Available space to
attach duct flange
without gravity damper
Typ. all around frame
Notes:
1. Duct Flange supplied by others.
2. Seal all ducts.
Detail A
from Data Center
1
2"
51mm
Return Air
31 3/4"
805mm
123 1/4"
3132mm
148 7/8"
3781mm
Optional Factory Installed
Gravity Damper
1
A
Supply Air
to Data Center
66 1/8"
1680mm
11"
279mm
Front of Unit
101"
2565mm
27 1/2"
698mm
DPN004154
Page :1 /2
Form No.: DPN001040_REV4
REV : 4
REV DATE : 1/19
Page 74
AIRFLOW SCHEMATIC
LIEBERT DSE PACKAGED SOLUTION
400/500kW PERIMETER UNIT
2
151 7/8"
3858mm
148 7/8"
3781mm
Duct Opening
1 1/2"
2
37mm
2"
2
51mm
31 3/4"
805mm
Duct Opening
2 1/8"
2
54mm
Notes:
1. Duct Flange supplied by others.
2. Perimeter available to attach Return Duct Flange.
3. Seal all ducts.
Front of Unit
1
DPN004154
Page :2 /2
Form No.: DPN001040_REV4
REV : 4
REV DATE : 1/19
Page 75
LIEBERT DSE PACKAGED SOLUTION
AIRFLOW SCHEMATIC
400/500kW ROOFTOP UNIT
Return Air
from
Data Center
Supply Air
to Data Center
38 1/4"
971mm
Supply
Duct
4 3/8"
110mm
43 1/2"
1105mm
Return
Duct
Left Side of Unit
38 1/8"
969mm
129 5/8"
3292mm
Supply Air
43 1/2"
1105mm
148 1/2"
3773mm
Return Air
Form No.: DPN001040_REV4
Notes:
1. Seal all ducts.
DPN004189
Page :1 /1
Left Side of Unit
Bottom of Unit
REV : 5
REV DATE : 1/19
Page 76
160"
4063mm
LIEBERT DSE PACKAGED SOLUTION
AIRFLOW SCHEMATIC
400/500kW ROOFTOP DRAW THRU UNIT
139 5/8"
3545mm
Return Air
from Data Center
264"
6706mm
45 1/4"
1150mm
Return
33 1/2"
851mm
Supply Air
to Data Center
59 3/8"
1508mm
Supply
3 1/2"
89mm
148 7/8"
3782mm
Typ.
Supply & Return
Form No.: DPN001040_REV4
DPN004558
Page :1 /1
3 1/2"
88mm
REV : 2
REV DATE : 1/19
Page 77
LIEBERT DSE PACKAGED SOLUTION
EQUIPMENT FLOOR PLAN
400/500kW PERIMETER AND ROOFTOP UNIT
3
2 3/8"
62mm
3
Customer Disconnect Enclosure
3
EconoPhase 1
30 3/8"
773mm
2
33"
838mm
2
13"
330mm
11 3/4"
297mm
TO PIPING FROM FLANGE
Compressor
Cabinet 1
2
Form No.: DPN001040_REV4
DPN004465
Page :1 /3
2
Main Electric Panel
Notes:
1. Grating is Removable.
2. Frame Member.
3. Area for running power wiring. Entry point is at different height
than shown. Refer to submittal DPN004960 for more information.
4. For low voltage and communication wiring entry points,
please refer to DPN004960 for more information.
2
2
EconoPhase 2
Compressor
2
Cabinet 2
Grating Level
(Top View)
REV : 2
REV DATE : 10/19
Page 78
LIEBERT DSE PACKAGED SOLUTION
EQUIPMENT FLOOR PLAN
400/500kW PERIMETER AND ROOFTOP UNIT
Compressor
Cabinet 1
Customer
Disconnect
Enclosure
Compressor &
Pump Access
42"
1067mm
42"
1067mm
Customer
Disconnect
Enclosure &
Pump Access
42"
1067mm
Main EP &
Pump Access
EconoPhase 1
EconoPhase Access
EconoPhase 2
42"
1067mm
24"
609mm
Door Clearance
39 1/2"
1003mm
Compressor
Compressor &
Pump Access
Compressor
Cabinet 2
Access
Form No.: DPN001040_REV4
Notes:
1. Service access areas are shaded.
DPN004465
Page :2 /3
Main Electrical Panel
Base Level
(Top View)
REV : 2
REV DATE : 10/19
Page 79
LIEBERT DSE PACKAGED SOLUTION
EQUIPMENT FLOOR PLAN
400/500kW PERIMETER AND ROOFTOP UNIT
Light Fixture
Below Condensor Section
Light Switch (Cabinet)
Upper Level
(Top View)
Light Fixture
Inside Evaporator Cabinet
VFD 1
VFD 3VFD 4
VFD 2
Fan 1
Fan 2
Fan 3
Fan 4
Service Ladder
Light Fixtures
Inside Evaporator
Cabinet (4 total)
Form No.: DPN001040_REV4
DPN004465
Page :3 /3
Light Fixture Below
Condensor Section
Customer
Disconnect
Enclosure
EconoPhase
Compressor Cabinet
Service Platform
Service Ladder
(Side View)
REV : 2
REV DATE : 10/19
Page 80
LIEBERT DSE PACKAGED SOLUTION
EQUIPMENT FLOOR PLAN
400/500kW DRAW THRU ROOFTOP UNIT
3
2 3/8"
62mm
3
Customer Disconnect Enclosure
3
EconoPhase 1
30 3/8"
773mm
2
33"
838mm
2
13"
330mm
11 3/4"
297mm
TO PIPING FROM FLANGE
Compressor
Cabinet 1
2
Form No.: DPN001040_REV4
DPN004653
Page :1 /3
2
Main Electric Panel
Notes:
1. Grating is Removable.
2. Frame Member.
3. Area for running power wiring. Entry point is at different height
than shown. Refer to submittal DPN004960 for more information..
4. For low voltage and communication wiring entry points,
please refer to DPN004960 for more information.
2
2
EconoPhase 2
Compressor
2
Cabinet 2
Grating Level
(Top View)
REV : 1
REV DATE : 10/19
Page 81
LIEBERT DSE PACKAGED SOLUTION
EQUIPMENT FLOOR PLAN
400/500kW DRAW THRU ROOFTOP UNIT
Compressor
Cabinet 1
Customer
Disconnect
Enclosure
Compressor &
Pump Access
42"
1067mm
42"
1067mm
Customer
Disconnect
Enclosure &
Pump Access
42"
1067mm
Main EP &
Pump Access
EconoPhase 1
EconoPhase Access
EconoPhase 2
42"
1067mm
24"
609mm
Door Clearance
39 1/2"
1003mm
Compressor
Compressor &
Pump Access
Compressor
Cabinet 2
Access
Form No.: DPN001040_REV4
Notes:
1. Service access areas are shaded.
DPN004653
Page :2 /3
Main Electrical Panel
Base Level
(Top View)
REV : 1
REV DATE : 10/19
Page 82
LIEBERT DSE PACKAGED SOLUTION
EQUIPMENT FLOOR PLAN
400/500kW DRAW THRU ROOFTOP UNIT
Fan 1 (Top)
Fan 4 (Bottom)
Light
Switch
(Cabinet)
VFD1/4
Light Fixture
(Optional)
Light Fixture
Below
Condensor
Section
Customer
Disconnect
Enclosure
Light Fixture
Below Condensor Section
Compressor Cabinet
EconoPhase
Top View
VFD 2/3
Light Fixtures
inside Evap Cabinet
Typ. (4)
Light Fixture
Inside Evaporator Cabinet
Fan 2 (Top)
Fan 3 (Bottom)
Form No.: DPN001040_REV4
DPN004653
Page :3 /3
Side View
REV : 1
REV DATE : 10/19
Page 83
LIEBERT DSE PACKAGED SOLUTION
Shaded area indicates
required minimum clearance
for Optional Gravity Damper
6"
152mm
CABINET & ANCHOR DIMENSIONAL DATA
400/500kW PERIMETER UNIT
101"
2565mm
22 1/2"
571mm
8"
203mm
Typ.
86"
2184mm
86"
2184mm
Rear of Unit
Shaded area indicates recommended
minimum clearance between units for
unit removal or evaporator coil
replacement.
Removable Lifting Lugs
(Typ. 6 Plcs.)
96"
2438mm
157 1/8"
3991mm
Rear of Unit
Shaded area indicates recommended
minimum clearance to be provided for
Electrical Box and component access
160"
4063mm
9"
227mm
Shaded area indicates recommended
minimum clearance to be provided
to remove Evaporator Coil.
Left Side
216 1/4"
5494mm
20'
6m
Form No.: DPN001040_REV4
DPN004148
Page :1 /2
REV : 4
REV DATE : 1/19
Page 84
Rear
of
Unit
1"
25mm
Typ.
Both Ends
LIEBERT DSE PACKAGED SOLUTION
CABINET & ANCHOR DIMENSIONAL DATA
400/500kW PERIMETER UNIT
215 3/4"
5480mm
155 3/4"
3956mm
24"
610mm
Typ. (6) Plcs.
Both Ends
5 7/8"
149mm
Typ.
Both Ends
Notes:
1. Underside of unit. Coil and fan removed for clarity.
2. Quantity of 32 mounting holes of 5/8” diameter provided for anchorage. Mounting requirement details such as brand, type, embedment depth, concrete strength,
wall bracing, and special inspection must be outlined and approved by the project Structural Engineer of Record.
3. Structural floors and housekeeping pads must be designed and approved by the project Structural Engineer of Record to withstand the seismic and wind
anchor loads as defined on the installation drawings. The installing contractor is responsible for the proper installation of all anchors and mounting hardware,
observing the mounting requirement details outlined by the Engineer of Record.
1"
25mm
Typ.
Both Sides
5/8"
O
16mm
Typ. (32) Plcs.
24"
610mm
Typ. (8) Plcs.
Both Sides
11 7/8"
302mm
Form No.: DPN001040_REV4
DPN004148
Page :2 /2
REV : 4
REV DATE : 1/19
Page 85
LIEBERT DSE PACKAGED SOLUTION
DRIP PAN CLEANOUT ACCESS & LOCATION
400/500kW PERIMETER UNIT
Factory provided
Clean Out line
can be accessed
by removing floor
panel next to
Compressor
compartment.
O1" pipe with
CPVC 1" FPT fitting
Clean Out Port
for Service Pan
Rear
Unit
7 3/8"
186mm
of
112 1/4"
2852mm
Bottom View
showing Clean Out line location
Form No.: DPN001040_REV4
DPN004326
Page :1 /1
REV : 2
REV DATE : 1/19
Page 86
LIEBERT DSE PACKAGED SOLUTION
Shaded area indicates minimum
Front Service access clearance
24"
610mm
96"
2438mm
CABINET DIMENSIONAL DATA
400/500kW ROOFTOP UNIT
8"
03mm
2
Typ.
93 3/4"
2381mm
98 1/4"
2495mm
Typ.
Shaded area indicates recommended
minimum clearance between units for
unit removal or evaporator coil
replacement. See Vertiv representative
22 1/8"
562mm
Shaded area indicates recommended
minimum clearance to be provided for
Electrical Box and component access
for adjustment to condenser air flow.
Typ.
Removable Lifting Lugs
Typ. (8) Plcs.
Shaded area indicates recommended
minimum clearance to be provided
to remove Evaporator Coil.
Form No.: DPN001040_REV4
160"
4063mm
DPN004188
Page :1 /2
157"
3988mm
Rear of Unit
9"
227mm
Left Side
264"
6706mm
20'
6m
REV : 4
REV DATE : 1/19
Page 87
Rear
of
Unit
LIEBERT DSE PACKAGED SOLUTION
CABINET DIMENSIONAL DATA
400/500kW ROOFTOP UNIT
264"
6706mm
1"
25mm
Typ.
All Sides
24"
610mm
Typ. (6) Plcs.
Both Ends
5 7/8"
149mm
Typ.
Both Ends
5/8"
O
16mm
Typ. (36) Plcs.
24"
610mm
Typ. (10) Plcs.
Both Sides
155 3/4"
3956mm
12 1/8"
308mm
Typ.
Both Sides
Form No.: DPN001040_REV4
Notes:
1. Underside of unit. Coil and fan removed for clarity.
2. Quantity of 36 mounting holes of 5/8” diameter provided for anchorage. Mounting requirement details such as brand, type, embedment depth,
concrete strength, wall bracing, and special inspection must be outlined and approved by the project Structural Engineer of Record.
3. Structural floors and housekeeping pads must be designed and approved by the project Structural Engineer of Record to withstand the seismic
and wind anchor loads as defined on the installation drawings. The installing contractor is responsible for the proper installation of all anchors
and mounting hardware, observing the mounting requirement details outlined by the Engineer of Record.
DPN004188
Page :2 /2
REV : 4
REV DATE : 1/19
Page 88
Rear
of
Unit
LIEBERT DSE PACKAGED SOLUTION
DRAIN CONNNECTION
400/500kW ROOFTOP DRAW THRU UNIT
3 5/8"
92mm
68 5/8"
1743mm
1-in CPVC NPT-female
drain connection
Left Side View
Notes:
1. The drain should be trapped to prevent outdoor air from being pulled in to the unit and constructed per local code.
2. Vertiv recommends the installation of threaded plugs at several locations to permit periodic cleaning and filling of the trap.
3. Where freezing temperatures are anticipated, the drain line and trap should be heat-traced to prevent freezing.
Form No.: DPN001040_REV4
DPN004651
Page :1 /1
REV : 1
REV DATE : 1/19
Page 89
LIEBERT DSE PACKAGED SOLUTION
ELECTRICAL FIELD CONNECTIONS
DP400/500 DEFINITIONS AND LOCATIONS
SINGLE POWER INPUT
STANDARD ELECTRICAL CONNECTIONS
1) HIGH VOLTAGE ENTRANCE – This area will be used for the high voltage entrance (120V or more). Enclosure is provided with
provisions for field installed power entry kit to be completed by installer in the field. Power entry kits are not provided with holes or
knockouts, which must be done by the installer in the field. The fittings used must have the proper environmental rating per code. The
location to be used will be determined by which power entry kit is ordered. Refer to the installation instructions of the power entry kit
ordered for more information on installation.
ACCEPTABLE POWER SUPPLIES FOR 480V NOMINAL UNITS:
i. 480V wye with solidly grounded neutral and 277V line to ground;
ii. Wye with high resistance (or impedance) ground;
iii. Delta with corner ground (EMC Filter of VFD’s must be removed; see DPN001946).
UNACCEPTABLE POWER SUPPLIES FOR UNITS:
iv. Delta without ground or with floating ground;
v. Delta with grounded center tap.
2) LOW VOLTAGE ENTRANCE – This area will be used for the low voltage and communication fittings. Enclosure is not provided with
holes or knockouts, which must be done by the installer in the field. The fittings used must have the proper environmental rating per
code.
3) MAIN UNIT POWER CONNECTION – Terminals are located on top of the locking disconnect switch. See side of disconnect switch for
wire range and tightening torque. Three phase service not provided by Liebert. Wire range and tightening torque will vary based on
disconnect size. Refer to label on side of disconnect.
4) EARTH GROUND CONNECTION FOR MAIN UNIT POWER – Terminal for field supplied source earth grounding wire. Earth
grounding required for Liebert units. 6AWG-350KCMIL wire range, 375 in-lb wire tightening torque.
5) FIELD SUPPLIED 120V UTILITY POWER – Terminals for the connection of a field supplied 120V 20A utility power to feed the light and
service electrical outlet. 22-8AWG wire range, 14.2lb-in tightening torque.
6) EARTH GROUNDING CONNECTION FOR FIELD SUPPLIED 120V UTILITY POWER - Terminal for field supplied 120V earth
grounding wire. Earth grounding required for Liebert units. 14-4AWG wire range, 14-10AWG – 20 in-lb, 8AWG – 25 in-lb, 6-4AWG –
35 in-lb.
7) FIELD SUPPLIED 120V CONTROL POWER – Terminals for the connection of a field supplied 120V 10A control power to feed the
equipment controls. 22-8AWG wire range, 14.2lb-in tightening torque.
8) EARTH GROUNDING CONNECTION FOR FIELD SUPPLIED 120V CONTROL POWER – Terminal for field supplied 120V earth
grounding wire. Earth grounding required for Liebert units. 14-4AWG wire range, 14-10AWG – 20 in-lb, 8AWG – 25 in-lb, 6-4AWG –
35 in-lb.
NOTE: Items 5 and 6 may not be present if Unit supplied 120V utility option is selected.
NOTE: Items 7 and 8 may not be present if Unit supplied 120V control option is selected.
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LIEBERT DSE PACKAGED SOLUTION
ELECTRICAL FIELD CONNECTIONS
DP400/500 DEFINITIONS AND LOCATIONS
SINGLE POWER INPUT
4
3
CIRCUIT BREAKER ACCESS
(120V UTILITY & CONTROLS)
LOCKED ACCESS HANDLE.
REQUIRES KEY TO OPEN.
A
A
B
B
C
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DOOR CLOSED
C
DOOR REMOVED
FOR CLARITY
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LIEBERT DSE PACKAGED SOLUTION
ELECTRICAL FIELD CONNECTIONS
DP400/500 DEFINITIONS AND LOCATIONS
DUAL POWER INPUT
STANDARD ELECTRICAL CONNECTIONS
1) HIGH VOLTAGE ENTRANCE – This area will be used for the high voltage entrance (120V or more). Enclosure is provided with
provisions for field installed power entry kit to be completed by installer in the field. Power entry kits are not provided with holes or
knockouts, which must be done by the installer in the field. The fittings used must have the proper environmental rating per code. The
location to be used will be determined by which power entry kit is ordered. Refer to the installation instructions of the power entry kit
ordered for more information on installation.
ACCEPTABLE POWER SUPPLIES FOR 480V NOMINAL UNITS:
i. 480V wye with solidly grounded neutral and 277V line to ground;
ii. Wye with high resistance (or impedance) ground;
iii. Delta with corner ground (EMC Filter of VFD’s must be removed; see DPN001946).
UNACCEPTABLE POWER SUPPLIES FOR UNITS:
iv. Delta without ground or with floating ground;
v. Delta with grounded center tap.
2) LOW VOLTAGE ENTRANCE – This area will be used for the low voltage and communication fittings. Enclosure is not provided with
holes or knockouts, which must be done by the installer in the field. The fittings used must have the proper environmental rating per
code.
3a) SOURCE 1 MAIN UNIT POWER CONNECTIONS – Terminals are located on top of the locking disconnect switch. See side of
disconnect switch for wire range and tightening torque. Three phase service not provided by Liebert. Wire range and tightening torque
will vary based on disconnect size. Refer to label on side of disconnect.
4a) EARTH GROUND CONNECTION FOR SOURCE 1 MAIN UNIT POWER – Terminal for field supplied Source 1 earth grounding wire.
Earth grounding required for Liebert units. 6AWG-350KCMIL wire range, 375 in-lb wire tightening torque.
3b) SOURCE 2 MAIN UNIT POWER CONNECTIONS – Terminals are located on top of the locking disconnect switch. See side of
disconnect switch for wire range and tightening torque. Three phase service not provided by Liebert. Wire range and tightening torque
will vary based on disconnect size. Refer to label on side of disconnect.
4b) EARTH GROUND CONNECTION FOR SOURCE 2 MAIN UNIT POWER – Terminal for field supplied Source 2 earth grounding wire.
Earth grounding required for Liebert units. 6AWG-350KCMIL wire range, 375 in-lb wire tightening torque.
5) FIELD SUPPLIED 120V UTILITY POWER – Terminals for the connection of a field supplied 120V 20A utility power to feed the light and
service electrical outlet. 22-8AWG wire range, 14.2lb-in tightening torque.
6) EARTH GROUNDING CONNECTION FOR FIELD SUPPLIED 120V UTILITY POWER - Terminal for field supplied 120V earth
grounding wire. Earth grounding required for Liebert units. 14-4AWG wire range, 14-10AWG – 20 in-lb, 8AWG – 25 in-lb, 6-4AWG –
35 in-lb.
7) FIELD SUPPLIED 120V CONTROL POWER – Terminals for the connection of a field supplied 120V 10A control power to feed the
equipment controls. 22-8AWG wire range, 14.2lb-in tightening torque.
8) EARTH GROUNDING CONNECTION FOR FIELD SUPPLIED 120V CONTROL POWER – Terminal for field supplied 120V earth
grounding wire. Earth grounding required for Liebert units. 14-4AWG wire range, 14-10AWG – 20 in-lb, 8AWG – 25 in-lb, 6-4AWG –
35 in-lb.
NOTE: Items 5 and 6 may not be present if Unit supplied 120V utility option is selected.
NOTE: Items 7 and 8 may not be present if Unit supplied 120V control option is selected.
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LIEBERT DSE PACKAGED SOLUTION
ELECTRICAL FIELD CONNECTIONS
DP400/500 DEFINITIONS AND LOCATIONS
DUAL POWER INPUT
3a 3b
AUTOMATIC
TRANSFER
CONTROLLER
4a 4b
CIRCUIT BREAKER ACCESS
(120V UTILITY & CONTROLS)
LOCKED ACCESS HANDLE.
REQUIRES KEY TO OPEN.
A
A
B
B
C
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DOOR CLOSED
C
DOOR REMOVED
FOR CLARITY
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ELECTRICAL FIELD CONNECTIONS
DP400/500 DE FIN ITION S AND LOCATION S
LOW VOLTAGE TERMINAL CONNECTIONS
9) REMOTE SHUTDOW N - Replace existing jumper between terminals 37 & 38 with field supplied normally closed switch having a
minimum 1 AMP, 24VAC rating. Use field supplied Class 1 wiring.
10) CUSTOMER ALARM INPUTS – Terminals for field supplied, normally open contacts, having a minimum 1 AMP, 24VAC rating,
between terminals 50, 51, 55, & 56. Use field supplied Class 1 wiring.
11) COMMON ALARM – On any alarm, normally open dry contact is closed across terminals 75 & 76 for remote indication. 1 AMP, 24VAC
max load. Use field supplied Class 1 wiring.
12) EXTRA REMOTE UNIT SHUTDOWN – Three additional contact pairs available for unit shutdown (labeled as 37A & 38A, 37B & 38B,
37C & 38C). Replace jumpers with field supplied normally closed switch having a minimum 1 AMP, 24VAC rating. Use field supplied
Class 1 wiring.
13) EXTRA COMMON ALARM – On any alarm, two additional normally open contacts are closed across terminals 94 & 95 and 96 & 97 for
remote indication. 1 AMP, 24VAC max load. Use field supplied Class 1 wiring.
14) MAIN FAN AUXILIARY SWITCH – On closure of the main fan contactor, normally open dry contact is closed across terminals 84 & 85
for remote indication. 1 AMP, 24VAC max load. Use field supplied Class 1 wiring.
15) REMOT E ANALOG INPUTS – Terminals for field supplied normally open contacts, having a minimum of 1 AMP, 24VAC rating,
between terminals 41, 42, 43, & 44. Use field supplied Class 1 wiring.
a) REMOTE SENSOR FAN CONTR OL – Allows fan speed control to be driven by a remote sensor capable of transmitting a 4-
20Ma, 0-5V, or 0-10V signal. Applications for this control method include, but are not limited to, underfloor static pressure.
16) SURG E PROTE CT ION ALARM – When surge protection device needs replacement, normally open dry contact is closed across
terminals 11 & 12 for remote indication. 1 AMP, 24VAC max load. Use field supplied Class 1 wiring.
ADDITIONAL INFORMATION
SUPPLY AIR SENSOR (SAS) – A factory-provided, installed and commissioned supply air sensor ships with the unit for sensor
location in the field by others. The sensor is terminated on the Liebert iCOM™ unit controller terminal strip and the associated
cable wiring is coiled within the unit for shipment. It is the responsibility of others to uncoil and locate the sensor in
accordance with acceptable best practices and any local codes (50ft provided).
VFD REMOTE KEYPAD – Allows remote control of VFD’s (one keypad for each VFD, located in Main Controls EP).
NOTE: All low voltage terminal connections are spring-cage with a wire range of 28-12AWG.
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Form No.: DPN001040_REV4
LIEBERT DSE PACKAGED SOLUTION
ELECTRICAL FIELD CONNECTIONS
DP400/500 DE FIN ITION S AND LOCATION S
STANDARD COMMUNICATION CONNECTIONS
17) RS485 BMS CO NNECTION – Terminal TB3-1 is TX/RX+. Terminal TB3-2 is TX/RX-. Terminal TB3-3 is earth ground. Use shielded
cable with 120ohm characteristic impedance. (Supplied by other).
18) CANBUS REMOTE SENSOR CONNECTION(P67) – Remove the inserted plug from this connector and attach the remote sensor
cable to power and communicate with Liebert remote Temperature/humidity sensors. Use shielded cable with 120ohm characteristic
impedance. (Supplied by other)
a) SUPPLY AIR AGGREGATOR SENSOR – Is a control option that allows the use of the 1 NTC sensor that is already provided
as a standard with the unit and the ability to ADD up to an additional 5 - 2T sensors to be used together to measure the
supply temperature for a total of up to 6 supply sensors. The ability to use multiple sensors to measure the supply
temperature provides iCOM™ the ability to control using the Maximum or Average of all the supply sensors. This is especially
useful in application of ducted systems and non-raised floor application because of the ability to have additional sensors
strategically placed to measure supply temperature and they provide benefits in raised floor applications.
b) 2T SENSOR – Is a control option that allows temperature data from multiple sensors to be averaged together when used in
Team Work 1 Mode. In this mode, one unit is selected as the “master”. When cascade control is enabled, selected unit or
units will operate continuously, standby unit will cycle on when additional cooling is required. If Lead/Lag control is enabled,
Standby unit will automatically start upon detection of a Lead unit. The Lead unit will automatically rotate every 24 hours (Adj)
to ensure equal run time between all units if auto rotate is enabled.
19) ETHE RNET BMS CONN ECT ION (P74) – RJ-45 connection for connecting to BMS Ethernet network. Use Class 5 shielded cable
(Supplied by other).
20) ETHERNET UNIT TO UNIT CONNECTION(P64) – RJ-45 connection for connecting to other units. Use Class 5 shielded cable
(Supplied by other).
NOTE: All low voltage terminal connections are spring-cage with a wire range of 28-12AWG.
NOTE: All communication cables should be kept separate from high-voltage wiring.
OPTIONAL ELECTRICAL CONNECTIONS
(Contact factory for availability)
21) SMOKE SENSOR ALARM – Factory wired dry contacts from smoke sensor are 91-common, 92-Normally Open, and 93-Normally
Closed. Supervised contacts, 80 & 81, open on sensor trouble indication. This smoke sensor is not intended to function as, or replace,
any room smoke detection system that may be required by local or national codes. 1 AMP, 24VAC max load. Use field supplied Class
1 wiring.
22) SPARE TERMINALS– Spare terminals for Class 1 wiring.
23) LIQUITECT SHUTDOWN AND DRY CONTACT – On LiquiTect act ivation, normally open dry contact is closed across terminals 58 &
59 for remote indication (LiquiTect sensor ordered separately). 1 AMP, 24VAC max load. Use field supplied Class 1 wiring.
24) REMOT E HUMIDIF I ER – On any call for humidification, normally open dry contact is closed across terminals 35 & 36 to signal field
supplied remote humidifier. 1 AMP, 24VAC max load. Use field supplied Class 1 wiring.
25) DAMPER MOTOR CONTROL INPUT – Terminals for field supplied connection for damper motor off relay (factory set to 100 SEC),
having minimum of 1 AMP, 24VAC max load. Use field supplied Class 1 wiring. Damper input will use one of the customer alarm
inputs of item 12.
26) DAMPER MOTOR FEEDBACK – On damper motor end switch activation, normally open dry contacts are closed across terminals 176
& 99, 177. 1 AMP, 24VAC max load. Use field supplied Class 1 wiring. Damper input will use one of the customer alarm inputs of item
10.
27) HEAT TRACE – Terminals for field supplied connection of heat trace used to heat the condensate water line. Power is supplied from
the 120V Utility Power (item 5). 22-8AWG wire range, 14.2lb-in tightening torque.
NOTE: Terminals for items 21 through 27 are always present. Refer to the order to verify if the options are installed on the unit.
NOTE: All low voltage terminal connections (items 21 through 26) are spring-cage with a wire range of 28-12AWG.
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LIEBERT DSE PACKAGED SOLUTION
ELECTRICAL FIELD CONNECTIONS
DP400/500 DE FIN ITION S AND LOCATION S
8
6
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5
27
7
SECTION A-A
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LIEBERT DSE PACKAGED SOLUTION
ELECTRICAL FIELD CONNECTIONS
DP400/500 DE FIN ITION S AND LOCATION S
FACTORY USE ONLY
14
22
21
23
24
10
12
9
11
13
16
25
26
15
17
SURGE PROTECTION DEVICE
(FROM ITEM 18)
20
Form No.: DPN001040_REV4
GROUND BAR
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SECTION B-B
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LIEBERT DSE PACKAGED SOLUTION
ELECTRICAL FIELD CONNECTIONS
DP400/500 DE FIN ITION S AND LOCATION S
19
Form No.: DPN001040_REV4
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18
SECTION C-C
FACTORY USE ONLY
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LIEBERT DSE PACKAGED SOLUTION
ELECTRICAL FIELD CONNECTIONS
DP400/500 DEFINITIONS AND LOCATIONS
HIGH VOLTAGE ENTRANC ES
REAR OF UNIT
D
D
SIDE VIEW
8 5/8"
219
35 1/2"
901
9 7/8"
251
2
1
1
5 1/4"
135
52 5/8"
1336
3
1
1
11 1/2"
293
SECTION D-D
Form No.: DPN001040_REV4
4
1
1
58 7/8"
1494
53 3/8"
1355
3 3/8"
84
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12 5/8"
321
REAR VIEW
NOTES:
1. LOCATION DEPENDS ON ENTRY KIT CHOSEN AT TIME OF ORDER.
2. 5 1/4" (133) x 5 1/4" (133) AREA FOR KNOCKO UTS P RO V IDE D .
KNOCKOUTS TO BE DONE ON SITE BY INSTALLER.
3. 8" (203) x 9" (229) AREA FOR KNOCKUTS PROVIDED. KNOCKOUTS
TO BE DONE ON SITE BY INSTALLER.
4. 9" (229) x 8" (203) AREA FOR KNOCKOUTS PROVIDED. KNOCKOUTS
TO BE DONE ON SITE BY INSTALLER.
5. NOT ALL COMPONENTS SHOW N W ILL BE INCLU D ED , REFE R TO
SPECIFIC ORDER DETAILS.
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LIEBERT DSE PACKAGED SOLUTION
ELECTRICAL FIELD CONNECTIONS
DP400/500 DEFINITIONS AND LOCATIONS
LOW VOLTAGE & COMMUNICATION ENTRANCES
REAR OF UNIT
D
D
SIDE VIEW
26 1/4"
666
12 3/8"
315
9 1/8"
230
2
1
2
6 1/8"
154
2
1
2
8"
204
SECTION D-D
Form No.: DPN001040_REV4
2
1
2
12 1/2"
316
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16 3/4"
425
REAR VIEW
NOTES:
1. LOCATION DEPENDS ON ENTRY KIT CHOSEN AT TIME OF ORDER.
ONLY ONE LOCATION IS REQUIRED.
2. 4 1/4" (108) x 6" (152) AREA FOR KNOCKOUTS PROVIDED.
KNOCKOUTS TO BE DONE ON SITE BY INSTALLER.
3. NOT ALL COMPONENTS SHOW N W ILL BE INCLU D ED , REFE R TO
SPECIFIC ORDER DETAILS.
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LIEBERT DSE PACKAGED SOLUTION
SERVICE DOOR ACCESS
400/500kW PERIMETER UNIT
Service Access Door to
Evaporative Section of unit
and Filter replacement
Separate 120V Field Supplied
power feed (located in Customer
Connection Enclosure) for lights
and convienience outlet
Rear of Unit
120V Convenience
Outlet
Form No.: DPN001040_REV4
DPN005099
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