Vertiv Liebert MC series User manual

Liebert® MC™
60-Hz Air-cooled MicrochannelCondenser
-Premium/EC Fan
Installer/User Guide

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TABLE OF CONTENTS
Important Safety Guidelines 5
Liebert MC Nomenclature 9
1 Introduction 11
1.1 Product Description and Features 11
1.2 Control, Fan Types and Features 11
1.2.1 Premium Efficiency Control/EC Fan 11
1.3 Liebert Lee-Temp™ Refrigerant Control 12
1.4 Surge Protective Device 13
2 Site Preparation 15
2.1 Site Considerations 15
2.2 Dimensions and Weights 15
2.2.1 Condenser and Options Net Weights 16
3 Inspection and Installation 27
3.1 Equipment Inspection 28
3.1.1 Packing Material 28
3.2 Handling Unit on the Skid 28
3.3 Unit Storage 29
3.4 Unpacking the Condenser—All Unit Sizes 29
3.5 Preparing a Condenser for Moving and Installation 30
3.5.1 Attaching 18" (457mm) Legs, RemovingtheSkidandAttachingSlings 30
3.5.2 Attaching36to60in.(914to1524mm)Legs, RemovingtheSkidandAttaching Slings 33
3.6 Mounting the Condenser 36
3.6.1 Standard Mounting Requirements 36
3.6.2 Seismic-Certified and Wind-Certified Mounting Requirements 36
4 Electrical Connections 39
4.1 Line Voltage Wiring 40
4.1.1 Wye- vs. Delta-Connected Power Supply 42
4.2 Low-voltage Control Wiring—CANbus Communication andInterlock Connections 43
4.2.1 Electrical Field Connection Descriptions 50
5 Piping 53
5.1 Piping Guidelines 53
5.2 Field Piping Guidelines 61
5.2.1 Field Piping Guidelines foraLiebertDXSystemandLiebertMCCondenser 62
5.2.2 Field Piping Guidelines foraLiebertDSEandLiebertPremiumMCCondenser 68
5.3 Refrigerant Planning Values 75
5.3.1 Recommended Refrigerant Line Sizes 76
5.4 Equipment Application Guidelines 78
5.5 Refrigerant Oil Addition Procedures 78
5.6 System Dehydration/Leak Test 78
5.7 System Charging with Liebert MC 78
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5.7.1 Liebert MC Charging, Units with Liebert Lee-Temp™ Receivers 78
5.7.2 Liebert MC Condenser Charging with Liebert DSE™ Receivers 79
5.7.3 Liebert MC Charging, Premium Efficiency Control, Units without Receivers 79
6 Checklist for Completed Installation 83
6.1 Moving and Placing Equipment 83
6.2 Electrical 83
6.3 Piping 83
6.4 Other 84
7 Initial Startup Checks and Commissioning 85
7.1 Startup Checklist 86
7.2 Initial Startup 86
8 Troubleshooting 87
9 Control Operation 89
9.1 Premium Efficiency Control Board and Interface 89
9.1.1 Initial Screen Upon Power-On 91
9.1.2 Main Menu Description 91
9.1.3 Analog Signals Menu Description 92
9.2 Premium Efficiency Condenser Alarm Codes 93
9.2.1 Active Alarms Menu Description 94
9.2.2 History Alarms Menu Description 94
10 Liebert Seismic Application—OptionalUnitConfiguration 99
10.1 Seismic Anchoring Considerations 99
10.2 Seismic piping considerations 107
10.3 Seismic wiring considerations 107
11 System Maintenance 109
11.1 General Procedures 109
11.2 Condenser Cleaning 110
11.2.1 When to Clean the Condenser Coil 110
11.2.2 What to Use to Clean the Condenser Coil 110
11.2.3 How to Clean the Condenser Coil 110
11.3 Fan Replacement 111
11.3.1 Verify the Fan Address 115
11.4 Premium Efficiency Control Board Replacement 120
11.4.1 Replacement Preparation 120
11.4.2 Installation 121
12 Preventive Maintenance Checklist 123
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IMPORTANT SAFETY GUIDELINES
Save These Instructions
This manual contains important safety instructions that should be followed during the installation and
maintenance of the Liebert MC. 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 and installation, operating and safety instructions on the unit and in this
manual. Follow all operating and user instructions.
WARNING! Risk of improper handling, installation and service. Can cause property damage,
injury or death.
Only properly trained and qualified personnel should install or perform repairs or maintenance
on this unit. Read all installation, operation and safety alerts and instructions and wear
appropriate protective headgear, safety glasses, gloves and clothing before installing,
operating or servicing this unit.
WARNING! Arc flash and electric shock hazard. Open all local and remote electric power
disconnect switches, verify with a voltmeter that power is Off and wear personal protective
equipment 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 LiebertiCOM®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
LiebertiCOM control.
The factory-supplied 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.
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WARNING! Risk of contact with high-speed, rotating fan blades. Can cause serious personal
injury or death.
Fan blades can automatically start rotating without warning at any time during a cooling cycle
or after power is restored after a power failure. Open all local and remote electric power supply
disconnect switches, wait 10 minutes and verify with a voltmeter that power is Off before
working within the unit cabinet, removing the fan guards or servicing the fan speed control, fan
blades or EC fan motors.
WARNING! Risk of electrical fire and short circuit. Can cause property damage, injury or death.
Select and install the line side electrical supply wire and overcurrent protection device(s)
according to the specifications on the unit nameplate(s), per the instructions in this manual
and according to the applicable national, state and local code requirements. Use copper
conductors only.
Verify that all electrical connections are tight. Unit-specific wiring diagrams are provided on
each unit.
WARNING! Risk of electric shock. Can cause injury or death.
The fan speed control and the EC fan electrical enclosures may contain a stored electrical
charge. Open all local and remote electric power disconnect switches, verify with a voltmeter
that power is Off and wait 10 minutes before working within the fan speed control and the EC
fan electrical enclosures.
WARNING! Risk of heavy condenser falling or tipping over. Can cause property damage,
serious injury or death.
Confirm that all components of the lifting system are rated for the weight of the condenser by
an OSHA Certified rating organization before attempting to lift and/or move the condenser. See
2.2 on page15 throughCondenser and option net weights—Large condensers on page17 for
the condenser weights.
CAUTION: Risk of contact with hot surfaces. Can cause injury.
Fan motors, transformers, piping and other components may become extremely hot during
normal operation. Wear thermally insulated gloves and appropriate protective clothing and
allow time for components to cool when working within the cabinet or electric control
enclosure.
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CAUTION: Risk of contact with sharp edges, splinters and exposed fasteners. Can cause
personal injury.
Only properly trained and qualified personnel wearing appropriate safety headgear, gloves,
shoes and glasses should attempt to move, lift, remove packaging from or prepare unit for
installation.
CAUTION: Risk of explosive discharge of high-pressure gas. Can cause injury.
Relieve system pressure and verify that the indoor and outdoor units are Off before making
piping connections/disconnections.
Do not exceed the design pressure rating that is marked on the nameplate.
Do not install a shutoff valve between the compressor and the field-installed pressure relief
valve.
NOTICE
Risk of interference with building doorways, openings and passages. Can cause unit and/or building
damage.
Refer to the installation plans and measure the unit and building opening before moving the unit to verify
clearances.
NOTICE
Risk of improper storage. Can cause unit damage.
Keep unit upright and protected from contact damage.
NOTICE
Risk of improper forklift handling. Can cause unit damage.
Keep the forklift tines level and at a height that will fit under the skid.
NOTICE
Risk of improper refrigerant charging. Can cause equipment damage.
Refrigerant R-407C and R-410A are blended refrigerants 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.
Vertiv™ recommends connecting a sight glass between the charging hose and the compressor suction
service valve. This will permit adjusting the cylinder hand valve so that liquid can leave the cylinder while
allowing vapor to enter the compressor.
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NOTICE
Risk of refrigerant overcharge. Can cause equipment damage.
Do not use the sight glass as an indicator when charging Liebert MC condenser systems.
NOTICE
Risk of using damaging cleaning agents, including non-base paint solvents. Can cause equipment
damage and damage to property and loss of refrigerant charge.
Using acid-based or sodium hydroxide-based cleaners can damage the Liebert MC condenser coil and
cause a loss of charge. This could cause equipment damage as well as damage to the surrounding
structure.
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LIEBERT MC NOMENCLATURE
Model Number – Part 1/2 Model Details Part 2/2
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 M 0 4 0 E 1 A D 0 A 0 V U 0 0 0 0 0 0 * * * *
1-2. UnitFamily; MC = Liebert® MC™ 11. Coil Coating
3. Platform Size 0 = None
S = Small E = E-Coat (Epoxy)
M = Medium 12. Panel Material
L = Large A = Bright Aluminum
4-6. Nominal Condenser Capacity, kW 13. Connection Pipe Unit of Measurement
028, 056, 040, 055, 080, 110, 160, 165, 220
Example: 040 = 40kW @ 95°F(35°C) & 27°R
(15°K) ITD
0 = Inches (Std. ACR Copper)
14. Legs Included
7. Control/Fan Type V = 18" Tall Legs (Std.)
E = Premium & EC Fan X = 36" Tall Legs with Bracing
8. Refrigerant Circuits/System Refrigerant type Y = 48" Tall Legs with Bracing
1 = Single Refrigerant Circuit, R-410A Z = 60" Tall Legs with Bracing
2 = Dual Refrigerant Circuit, R-410A 15. Agency Certification
7 = Single Refrigerant Circuit, R-407C, R-22 U = CSA Listed, Marked with CSA c-us logo
8 = Dual Refrigerant Circuit, R-407C, R-22 1 = IBC/OSHPD Seismic Certification, IBC/FBCWind Load Certification and
IBCSnowLoad Certification.
9. Power Supply 16. Undefined - Reserved for Future Use
A = 460V / 3ph/60Hz 17. LiebertLee-Temp™ Configuration
B = 575V / 3ph/60Hz 0 = No Receiver Leg/Software
Y = 208/230V/3ph/60Hz 1 = Liebert Lee-Temp Receiver Leg/Software
2 = 380V/3ph/60Hz 2 = Liebert DSE Receiver Leg/Software
10. Packaging 18-21. Undefined - Reserved For Future Use
D = Domestic, Non-Stackable (Horizontal Airflow
Orientation) 22-25. Factory Configuration Number
E = Export Crating - Non-Stackable (Horizontal Airflow Orientation)
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