Vertiv Liebert MCV Series Installation and maintenance instructions

Liebert® MCV™
60-Hz, High-density Microchannel Condenser
Installer/User Guide

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TABLE OF CONTENTS
1 Important Safety Instructions 5
2 Nomenclature and Components 7
2.1 Liebert MCV Model-number Nomenclature 7
2.2 Component Location 8
2.3 Product Description and Features 9
2.4 Control, Fan Types and Features 9
2.4.1 Premium Efficiency Control/EC Fan 9
2.4.2 Anti-Freezing Operation 9
2.4.3 Surge Protective Device 10
3 Pre-installation PreparationandGuidelines 11
3.1 Planning Dimensions 11
3.2 Unit Weights 11
4 Equipment Inspection and Handling 13
4.1 Packaging Material 13
4.2 Remove Shipping Panels and Brackets 14
5 Piping 15
5.1 Refrigerant Piping and Charging 15
5.1.1 Refrigerant Piping Guidelines forAir-cooledSystems 16
5.1.2 Additional Oil Requirements 17
5.2 System Dehydration/Leak Test 17
5.3 Charging Condensers with DSE Receivers 17
6 Electrical Connections 19
6.1 Line Voltage Wiring 20
6.1.1 Acceptable Power Supplies—380V to 460V Nominal Units 21
6.1.2 Unacceptable Power Supplies 21
7 Checklist for Completed Installation 23
7.1 Moving and Placing Equipment 23
7.2 Electrical Installation Checks 23
7.3 Piping Installation Checks 23
7.4 Other Installation Checks 23
8 Initial Start-up Checks andCommissioningProcedure forWarrantyInspection 24
9 Troubleshooting 25
10 Control Operation 27
10.1 Premium Efficiency Control Board and Interface 27
10.1.1 Initial Display upon Power-On 29
10.1.2 Navigating the Controller-interface Main Menu 29
10.1.3 Analog Signals Menu 30
10.1.4 Active Alarms Menu 31
10.1.5 History Alarms Menu 32
11 Maintenance 35
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11.1 General Condenser Maintenance 36
11.2 Condenser Cleaning 36
11.2.1 When to Clean the Condenser Coil 36
11.2.2 What to Use to Clean the Condenser Coil 36
11.2.3 Cleaning the Condenser Coil 37
11.3 Replacing the Condenser Fan 37
11.3.1 Verifing the Fan Address 43
11.4 Replacing the Premium-efficiency Control Board 47
11.4.1 Preparing to Replace the Board 47
11.4.2 Installing the Replacement Board 48
12 Preventive Maintenance Checklist 50
Appendices 55
Appendix A: Technical Support and Contacts 55
Appendix B: Submittal Drawings 57
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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MCV. 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 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 over-pressurization of the refrigeration system. Can cause explosive
discharge of high-pressure refrigerant, loss of refrigerant, environmental pollution, equipment
damage, injury, or death. This unit contains fluids and gases under high pressure. Use extreme
caution when charging the refrigerant system. Do not pressurize the system higher than the
design pressure marked on the unit's nameplate.
WARNING! Risk of contact with high-speed, rotating fan impeller blades. Can cause 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 impellers have stopped rotating before
working in the unit cabinet.
WARNING! Risk of contact with high-speed rotating fan blades. Can cause serious injury or
death. If control voltage is applied, the fan motor can restart without warning after a power
failure. 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
on the fan assembly. After working on the fan assembly, remove any used tools or other
objects from the unit cabinet before restoring electric power.
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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, wearing appropriate, OSHA-approved PPE, who have been specially-
trained in the installation of air-conditioning equipment.
WARNING! Risk of improper wire and loose electrical connections. Can cause overheated wire
and electrical connection terminals resulting in smoke, fire, equipment and building damage,
injury or death. Use correctly sized copper wire only and verify that all electrical connections are
tight before turning power On. Check all electrical connections periodically and tighten as
necessary.
CAUTION: Risk of contact with sharp edges, splinters, and exposed fasteners. Can cause
injury. Only properly trained and qualified personnel wearing appropriate, OSHA-approved PPE
should attempt to move, lift, remove packaging from or prepare the unit for installation.
CAUTION: Risk of improper moving, lifting and handling. Can cause equipment damage or
injury. Only properly trained and qualified personnel should work on this equipment. Fan
modules weigh in excess of 115lb(52.2kg). Use proper lifting techniques and wear appropriate,
OSHA-approved PPE to avoid injury and dropping the fan module during removal. Equipment
used in handling/lifting, and/or installing the fan assembly must meet OSHA requirements. Use
handling/lifting equipment rated for the weight of the fan assembly. Use ladders rated for the
weight of the fan assembly and technicians if used during installation. Refer to handling/lifting,
and/or installation equipment operating manual for manufacturer's safety requirements and
operating procedures.
CAUTION: Risk of exposure to harmful noise levels. Can cause hearing injury or loss.
Depending on the installation and operating conditions, a sound pressure level greater than
70dB(A) may arise. Take appropriate technical safety measures. Operating personnel must
wear appropriate, OSHA-approved PPE and observe all appropriate hearing-protection safety
requirements.
NOTICE
Risk of oil contamination with water. Can cause equipment damage.
LiebertMCV 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
installation or 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.
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2 NOMENCLATURE AND COMPONENTS
This section describes the model-number configuration for Liebert MCV units and components.
2.1 Liebert MCV Model-number Nomenclature
Table 2.2 below describes each digit of the 25-digitconfigurationnumber. The 14-digit model number
consists of the first 10 digits and last four digits of the configuration number.
Model # Part 1 Model Details Model # Part 2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
M C V 3 3 0 E 2 A D 0 G 0 0 U 0 2 0 0 0 0 * * * *
Table 2.1 Liebert MCV 25-digit Configuration Number Example
Digit Description
Digits 1 and 2 = Unit Family
MC = Microchannel Condenser
Digit 3 Platform Size
V = V-coil arrangement
Digits 3-6 - Nominal Capacity, kW
330 = 330kW
440 = 440kW
Digit 7 - Control/Fan Type
E = Premium control and EC fan
Digit 8 - Refrigerant Circuits/System Refrigerant Type
2 = Dual refrigerant circuit, R-410A
Digit 9 - Power Supply
A = 460V / 3ph / 60Hz
2 = 380V / 3ph / 60Hz
M = 380-415V / 3ph / 50Hz
Digit 10 - Packaging
D = Domestic, non-stackable
E = Export crating, non-stackable
Digit 11 - Coil Coating
0 = None
E = E-coat (epoxy)
Digit 12 - Panel Material
G = Galvanized steel
Digit 13 - Connection Pipe Unit of Measurement
0 = Inches (std. ACR copper)
Table 2.2 MCV Model-number Digit Definitions
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Digit Description
Digit 14 - Legs Included
0 = No legs (standard)
Digit 15 - Agency Certification
U = CSA listed, marked with CSA c-us logo
Digit 16 - Undefined, Reserved for future use.
Digit 17 - Receiver/Software Configuration
2 = Liebert DSEsoftware
Digits 18-21 - Undefined, Reserved for future use.
Digits 22-25 - Factory Configuration Number
Table 2.2 MCV Model-number Digit Definitions (continued)
2.2 Component Location
The unit component locations are described in the submittal documents included in the Submittal
Drawings on page57.
The following table lists the relevant documents by number and title.
Document Number Title
DPN003871 Component Locations, 6-fan MCV330
DPN004210 Component Location, 8-fan MCV440
Table 2.3 Component-location Drawings
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2.3 Product Description and Features
The Liebert MCV condenser is a direct-drive EC-fan type air-cooled heat-rejection unit suitable for
mounting outdoors. It provides heat rejection for two separate refrigeration circuits, matches the heat
rejection capacity corresponding with the outdoor ambient temperature and with each corresponding
compressor heat-rejection requirements. Constructed with a galvanized-steel frame, galvanized-steel
panels and aluminum microchannel coil, the unit is quiet and corrosion resistant. The condenser is quickly
and easily installed, because all internal wiring is completed at the factory with only electrical connections
to be made at the job site. All electrical connections and controls are enclosed in an integral, weatherproof
section of the condenser.
Figure 2.1 Liebert MCV
2.4 Control, Fan Types and Features
2.4.1 Premium Efficiency Control/EC Fan
Premium Efficiency Controls and EC fans are matched to provide superior system energy efficiency. The
premium control board allows CANbus communication with the indoor unit’s Liebert iCOM™ control. This
communication feature provides compressor run signals, condenser operating mode changes, condenser
alarm monitoring, simplified system charging procedures and outdoor temperature monitoring.
The Premium Efficiency Control board on a Liebert MCV maintains EC fans on the same circuit to the
same speed in order to maintain refrigerant head pressure in DX mode and refrigerant temperature in
EconoPhase mode.
2.4.2 Anti-Freezing Operation
The EC fans must be operated periodically in cold weather to reduce the possibility of lockup due to ice
and snow accumulation. During periods of fan inactivity and outdoor temperatures below 35°F (1.6°C), the
EC fans will spin for at least 30 seconds every 15 minutes at 60% of the maximum fan speed.
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2.4.3 Surge Protective Device
An optional Surge Protective Device (SPD) can be field-wired to protect the condenser from power surges
that threaten sensitive equipment. The condenser’s electrical panel provides a terminal block to allow the
SPD to be wired in parallel with the high-voltage power. An additional low-voltage terminal block is
provided on condensers to allow monitoring of the SPD alarm circuit.
ASCO Series 420 surge-protective device provides 50kA per mode of surge current protection. An
illuminated green LED indicates the SPD is On and operating properly. An illuminated red LED indicates
that the device may require replacement.
When both LEDs are Off, there is no power to the condenser, either from a power failure or because the
condenser disconnect is in the Off position.
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