Emerson Liebert MC 28 - 220kW User Manual

Precision Cooling For Business-Critical Continuity™

Liebert® MC

User Manual, 60Hz Air-Cooled Microchannel Condensers

™

TABLE OF CONTENTS

IMPORTANT SAFETY GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

LIEBERT MC NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.1 Control/Fan Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1.1 Premium Efficiency Control/EC Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1.2 Liebert Lee-Temp

1.2 Sound Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2.1 Liebert Quiet-Line Match Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3 Surge Protection Device (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.0 SITE PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

2.1 Site Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Dimensions and Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.0 INSPECTION AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

3.1 Equipment Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.1 Packing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2 Handling Unit on the Skid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.3 Unit Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.4 Unpacking the Condenser—All Unit Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.5 Preparing a Condenser for Moving and Installation—Units with One or Two Fans. . . . . . 15

3.5.1 Attaching Legs, Removing the Skid and Attaching Slings-Units with One or Two Fans . . . 15

3.6 Mounting the Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

™

Refrigerant Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4.0 ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

4.1 Line Voltage Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.1.1 Wye vs. Delta Connection Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.2 Low-Voltage Control Wiring—Premium Efficiency Control Condenser . . . . . . . . . . . . . . . . 21

4.2.1 Electrical Field Connection Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.0 PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

5.1 Piping Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.2 Field Piping Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.3 Refrigerant Planning Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.4 Equipment Application Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.5 Refrigerant Oil Addition Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.6 System Dehydration/Leak Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.7 Liebert MC Condenser Charging, Units with Liebert Lee-Temp

5.8 Liebert MC Condenser Charging with Liebert DSE

™

Units . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.9 Liebert MC Condenser Charging, Units without Liebert Lee-Temp

™

Systems . . . . . . . . . . . . 34

™

Systems. . . . . . . . . . 35

6.0 CHECKLIST FOR COMPLETED INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

6.1 Moving and Placing Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

6.2 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

6.3 Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

6.4 Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

7.0 INITIAL STARTUP CHECKS AND COMMISSIONING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7.1 Startup Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7.2 Initial Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

8.0 CONTROL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

8.1 Premium Efficiency Control Board and Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

8.1.1 Initial Screen Upon Power-On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8.1.2 Main Menu Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8.1.3 Analog Signals Menu Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

8.2 Premium Efficiency Condenser Alarm Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

8.2.1 Active Alarms Menu Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

8.2.2 History Alarms Menu Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

9.0 SYSTEM MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

9.1 General Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

9.2 Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

9.2.1 When to Clean the Condenser Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

9.2.2 What to Use to Clean the Condenser Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

9.2.3 How to Clean the Condenser Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

9.3 Fan Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

9.4 Premium Efficiency Control Board Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

9.4.1 Replacement Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

9.4.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

9.4.3 Maintenance Inspection Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

10.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

FIGURES

Figure 1 Two-fan Liebert MC condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 2 Typical footprint dimensions, all units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 3 Condenser planning dimensional data—MCS028 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4 Condenser planning dimensions—MCM040, MCM080, MCM160 with/without Liebert

Lee-Temp

Figure 5 Condenser planning dimensions–MCM120. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 6 Condenser planning dimensions—MCL055, MCL110, MCL165 and MCL220. . . . . . . . . . . . . . . 10

Figure 7 Cabinet and anchor dimensions—MCL055, MCL110, MCL165 and MCL220 with Liebert

Lee-Temp

Figure 8 Equipment recommended for handling a Liebert condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 9 Forklift position with one-fan or two-fan condensers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 10 Removing protective material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 11 Attaching legs to one-fan or two fan condensers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 12 Securing slings to condensers for lifting off skid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 13 Remove skid, set condenser on floor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 14 Lifting condensers with one, two, three or four fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 15 Wye vs. Delta power supply connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 16 Typical connections, Premium Efficiency Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 17 Field configurations and setting adjustments, Premium Efficiency Control . . . . . . . . . . . . . . . . 24

Figure 18 Piping schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 19 Liebert MC Condenser piping—Single-circuit units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 20 Condenser piping for single-circuit condensers (with Liebert Lee-Temp

Figure 21 Piping: dimensions—dual circuit two-fan and four-fan units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 22 Piping: dimensional data with Liebert Lee-Temp

Figure 23 Premium efficiency fan control board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Figure 24 Premium Efficiency Control Interface - Human Machine Interface (HMI). . . . . . . . . . . . . . . . . . 43

Figure 25 Initial controller display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Figure 26 Main Menu operation and structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Figure 27 Analog Signals Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Figure 28 Active alarms menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Figure 29 History alarms menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Figure 30 EBM small and medium fan, Liebert MC series MCS/MCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Figure 31 EBM large fan—Liebert MC series MCL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Figure 32 Ziehl-Abegg small, medium and large fan, Liebert MC series MCS, MCM and MCL . . . . . . . . . 56

Figure 33 Jumper locations on Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

™

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

™

receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

™

) . . . . . . . . . . . . . . . . . 30

™

—dual circuit condensers . . . . . . . . . . . . . . . 32

iii

TABL ES

Table 1 Condenser net weights, shipping weights, dimensions and volume, approximate . . . . . . . . . . . . . 6

Table 2 Condenser net weight addition—taller legs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 3 Condenser leg height and additional weight, MCL055, MCL110, MCL165 and MCK220 . . . . . . 10

Table 4 Electrical data, three-phase, 60Hz condenser, Premium Version (EC control). . . . . . . . . . . . . . . 19

Table 5 Electrical data, Liebert Lee-Temp

Table 6 Liebert MC Condenser piping sizes, single-circuit units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 7 Condenser piping connection sizes—single-circuit condensers with Liebert Lee-Temp. . . . . . . . 30

Table 8 Piping: dimensions—dual-circuit, two-fan and four-fan units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Table 9 Piping dimensions—dual circuit condensers with Liebert Lee-Temp . . . . . . . . . . . . . . . . . . . . . . 32

Table 10 Refrigerant required, R-407C, approximate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Table 11 Refrigerant required, R-410A, approximate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Table 12 Interconnecting piping refrigerant charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 13 Target subcooling for ambient outdoor temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 14 Difference in subcooling measurements—Indoor minus outdoor. . . . . . . . . . . . . . . . . . . . . . . . . . 37

Table 15 Liquid pressure and temperature chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Table 16 Analog signal definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Table 17 System alarm information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Table 18 EC Fan alarm information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Table 19 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

™

receiver, 60Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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 trained and qualified personnel should work 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

Risk of arc flash and electric shock hazard. Disconnect all local and remote electric power supplies and wear appropriate personal protective equipment per NFPA 70E before working within the electric control enclosure or the fan motor connection box(es). Failure to comply can cause serious injury or death.

This unit contains lethal voltage. The line side of the unit disconnect switch remains energized when the unit disconnect switch is in the “Off” position. Use a voltmeter to verify that the line side input electric power to the unit disconnect switch is off before working on any electrical components or connections.

Important Safety Guidelines

WARNING

Risk of 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. Disconnect all local and remote electric power supplies and verify with a voltmeter that the power is off and that the fan blades have stopped rotating before working within the cabinet or servicing fan motors.

WARNING

Risk of electric shock. Can cause injury or death. The variable speed control may contain a stored electrical charge. Disconnect all local and

remote electrical power supplies and wait 10 minutes before working within condenser main electrical enclosure or fan electrical enclosure.

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 - Dimensions and Weights for the condenser weights.

CAUTION

Risk of 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.

1Liebert

™

Important Safety Guidelines

CAUTION

Risk of 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.

NOTICE

Risk of overhead interference. Can cause unit and/or structure damage. Refer to the installation plans before moving the unit to verify clearances.

NOTICE

Risk of improper storage. Can cause unit damage. Keep unit upright and protected from contact damage.

Liebert® MC

™

Liebert MC Nomenclature

LIEBERT MC NOMENCLATURE

Model Number – Part 1/2 Model Details Part 2/2

12 345678910111213141516171819202122232425

MCM040E1AD0A0VU000000****

1-2. Unit Family; MC = Microchannel Condenser 12. Panel Material

3. Platform Size A = Bright Aluminum

S = Small 13. Connection Pipe Unit of Measurement

M = Medium 0 = Inches (Std. ACR Copper)

L = Large 14. Legs Included

4-6. Nominal Condenser Capacity, kW V = 18" Tall Legs (Std.)

Example: 040 = 40kW @ 95°F(35°C) & 27°R (15°K) ITD X = 36" Tall Legs with Bracing

7. Control/Fan Type Y = 48" Tall Legs with Bracing

E = Premium & EC Fan Z = 60" Tall Legs with Bracing

8. Refrigerant Circuits/System Refrigerant type 15. Agency Certification

1 = Single Refrigerant Circuit, R-410A U = CSA Listed, Marked with CSA c-us logo

2 = Dual Refrigerant Circuit, R-410A 1 = CSA listed, IBC/OSHPD Seismic Certification

7 = Single Refrigerant Circuit, R-407C, R-22 0 = No Agency Listing

8 = Dual Refrigerant Circuit, R-407C, R-22 16. Sound Level

9. Power Supply 0 = Standard Sound

™

A = 460V / 3ph/60Hz 17. Liebert Lee-Temp

Y = 208/230V/3ph/60Hz 0 = None (Standard)

2 = 380/415V/3ph/60Hz

10. Packaging 1 = Factory Set for Liebert Lee-Temp Kits

D = Domestic, Non-Stackable (Horizontal Airflow Orientation) 18-21. Undefined - Reserved For Future Use

E = Export Crating - Non-Stackable (Horizontal Airflow Orientation) 22-25. Factory Configuration Number

11. Coil Coating

0 = None

E = E-Coat (Epoxy)

Configuration

3Liebert

™

1.0 INTRODUCTION

1.1 Product Description and Features

The Liebert MC condenser is a low-profile, direct-drive propeller fan-type air-cooled unit suitable for mounting outdoors. It provides heat rejection for either one or 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 an aluminum cabinet, galvanized steel frame and 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 1 Two-fan Liebert MC condenser

Introduction

1.1 Control/Fan Types

1.1.1 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 ambient temperature monitoring. The EC fan is an integral assembly of an electronically commutated motor, quiet fan blade assembly and finger/hail guard. The fans are controlled by the premium control board using pressure transducer signals from the refrigerant circuit and factory programming to control the refrigerant head pressure.

The premium control board uses inputs from the indoor unit, condenser refrigerant pressures and temperatures and ambient temperatures to modulate the EC fan motor speed from 0 to 100% RPM, maintaining refrigerant head pressure setpoints. The control board, EC fan(s) and transducer(s) are factory-wired. Dual refrigeration circuit condensers adjust fans of each circuit independently to match each circuit’s head pressure conditions. Multiple fan single refrigeration circuit condensers adjust all fans to the same RPM to maintain head pressure. The control system provides refrigerant head pressure control for outdoor ambient temperatures as low as -30°F (-35°C), provided that the total design range (from minimum to maximum) is 125°F (70°C) or less. Liebert Lee-Temp required only when the design temperature ranges exceed 125°F (70°C) for standard match ups and 115°F (65°C) for Liebert Quiet-Line

Liebert® MC

™

match ups.

™

kits are

1.1.2 Liebert Lee-Temp™ Refrigerant Control

The Liebert Lee-Temp head pressure control system utilizes head pressure control valve(s), extra refrigerant and insulated refrigerant receiver(s) with heater pads to assist system starting and to maintain proper operating head pressures in outdoor ambient temperatures below the rating point of the Liebert MC control type. The system works by flooding the condenser coil with liquid refrigerant to a level that balances the system condensing requirements with the condenser coil surface available to reject the system heat. During the summer, the system requires the entire condenser coil surface for heat rejection and most of the refrigerant is stored in the receiver. In the winter, the same amount of heat can be rejected by only a fraction of the coil surface. As head pressure begins to fall, the control valve restricts the flow of liquid refrigerant existing from the condenser. This extra liquid refrigerant reduces the effective condenser surface area available for heat transfer. The head pressure control valve also bypasses hot gas into the receiver to warm the liquid and maintain liquid pressure for proper operation of the expansion valve. Liebert Lee-Temp kit is optional for condensers and is field-installed. Condenser control boards are factory-configured for Liebert Lee-Temp if ordered with Liebert Lee-Temp receivers. They can be field-configured if Liebert Lee-Temp system is added later.

1.2 Sound Level

Liebert MC condensers utilize low air resistance coil(s) and slower speed fan motors to yield the required heat rejection at significantly lower sound levels. EC fans are designed to yield the same maximum sound levels at summer design conditions to help your facility meet noise codes with moderate operating sound levels.

Introduction

1.2.1 Liebert Quiet-Line Match Up

Special match ups of premium condensers are available for applications needing to meet even lower governmental sound regulations. Lower sound levels are achieved by oversizing the condenser, which will decrease the maximum airflow and sound level produced by the condenser at design outdoor air temperatures. This feature requires special setup of the indoor unit. Liebert Lee-Temp may be required for these applications.

1.3 Surge Protection Device (Optional)

An optional surge protection device (SPD) can be field-wired to protect the condenser from 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 with Premium Control Boards to allow monitoring of the SPD alarm circuit.

The Liebert PowerSure CM protection. An illuminated green LED indicates the SPD is On and providing full protection. An illuminated red LED indicates that the device’s protection may have been reduced and may require replacement.

Both lights extinguished indicates there is no power to the condenser or the condenser disconnect is in the Off position.

™

surge protection device provides 50kA per mode of surge current

5Liebert

™

2.0 SITE PREPARATION

2.1 Site Considerations

• Condensers should be installed in a location offering maximum security and access for maintenance.

• Avoid ground-level sites with public access and areas prone to heavy snow or ice accumulations.

• To ensure adequate air supply, Emerson with clean air, away from loose dirt and foreign matter that might clog the coil. In addition, condensers should be located no closer than 3 feet (1m) from a wall, obstruction or adjacent unit.

• For roof installation, mount the condenser on suitable curbs or other supports in accordance with local codes.

• Condensers must not be installed in a pit.

• Condensers must be installed on a level surface to ensure proper refrigerant flow.

• Use caution when installing condensers below the indoor unit. Condensers must not be installed more than 15ft. (4.6m) below the indoor unit. Condensers with Liebert Lee-Temp be installed at or above the level of the indoor units to maintain proper subcooling.

• Liebert Lee-Temp receiver tanks should be mounted on the condenser legs for proper operation. Contact Emerson Application Engineering Department for assistance with applications requiring remote mounting of receivers.

• Condensers must be installed in vertical airflow orientation to maintain the electrical box’s NEMA 3R rating.

Site Preparation

recommends that condensers be installed in an area

™

receivers must

2.2 Dimensions and Weights

Table 1 Condenser net weights, shipping weights, dimensions and volume, approximate

Domestic Packaging Export Packaging

Condenser

Number

Model #

MCS028 1 154 (70) 335 (152)

MCM040 1 231 (105) 410 (186)

MCM080 2 441 (200) 750 (340)

MCM120 3 672 (305) 1110 (503)

MCM160 4 860 (390) 1425 (646)

MCL055 1 344 (156) 525 (238)

MCL110 2 602 (273) 910 (413)

MCL165 3 891 (404) 1330 (603)

MCL220 4 1186 (538) 1755 (796)

Net and packaged weights will increase with factory options: legs taller than 18", coated coils and seismic options. Field-installed receivers also add to net weights. Consult factory for additional information.

of Fans

Net Weight

lb (kg)

Packaged

Weight

lb (kg)

Dimensions

(LxWxH)

in. (cm)

76x36x63

(193x91x160)

76x36x63

(193x91x160)

136x36x63

(345x91x160)

196x36x63

(498x91x160)

256x36x63

(650x91x160)

76x36x63

(193x91x160)

136x36x63

(345x91x160)

196x36x63

(498x91x160)

256x36x63

(650x91x160)

Packaged

Volume

(m3)

100 (2.8) 455 (206)

100 (2.8) 535 (243)

179 (5.0) 945 (429)

257 (7.3) 1380 (626)

336 (9.5) 1770 (803)

100 (2.8) 645 (293)

179 (5.0) 1110 (503)

257 (7.3) 1600 (726)

336 (9.5) 2095 (950)

Weight

lb (kg)

Dimensions

(LxWxH)

in. (cm)

77x37x64

(196x94x163)

77x37x64

(196x94x163)

137x37x64

(348x94x163)

197x37x64

(413x66x142)

257x37x64

(653x94x163)

77x37x64

(196x94x163)

137x37x64

(348x94x163)

197x37x64

(413x66x142)

257x37x64

(653x94x163)

Volume

(m3)

106 (3.0)

188 (5.3)

270 (7.7)

352 (10)

106 (3.0)

188 (5.3)

270 (7.7)

352 (10)

Table 2 Condenser net weight addition—taller legs

Leg Height

In. (mm)

36 (914) 120 120 139 242 236 127 148 222 242

48 (1219) 151 151 171 304 283 159 179 269 289

60 (1524) 183 183 202 367 330 190 210 316 336

Liebert® MC

MCS028 MCM040 MCM080 MCM120 MCM160 MCL055 MCL110 MCL165 MCL220

™

Additional Weight by Condenser Model, lb. (kg)

Figure 2 Typical footprint dimensions, all units

3-5/8"

(93mm)

2-1/2" (64mm)

2-1/2"

(64mm)

13/16" (21mm)

3-5/8"

(93mm)

1-7/8" (48mm)

1/2"x1"

(12.7mm x 25.4mm)

Obround

1-7/8" (48mm)

For typical footprint

dimensions, see Figure 2

Figure 3 Condenser planning dimensional data—MCS028

Site Preparation

51-5/8"

(1310mm)

42-1/2"

(1079mm)

42-3/4"

(1085mm)

44-1/8"

(1121mm)

Height to Top of Fan Guard

Height to Top of Fan Guard C

Emerson recommends a clearance of 36" (915mm) on each side for proper operation and component access.

42-3/4"

(1085mm)

44-1/8"

(1121mm)

ANCHOR PLAN

42-1/2"

(1079mm)

One-Fan

Condenser

15-1/4"

(387mm)

35-7/8"

(910mm)

51-5/8"

(1310mm)

42-1/2"

(1079mm)

40-7/8"

(1038mm)

A *, In. (mm)

* 18" legs standard for all models. Cross-bracing is required for legs longer than 18" (457mm). Number varies according to model and

See Tables 1 and 2 for weights, including added weight for legs of various lengths. Source: DPN002372, Rev. 2; DPN002373, Rev. 3

DPN002372 Rev. 2

Leg Height

18 (457) 31-5/8 (803) 39-5/8 (1006

36 (914) 49-5/8 (1260) 57-5/8 (1464) 48 (1219) 61-5/8 (1565) 69-5/8 (1768) 60 (1524) 73-5/8 (1870) 81-5/8 (2073)

options.

DPN002373 Rev. 3

In. (mm)

Electric Box End

7Liebert

™

Site Preparation

For typical footprint

dimensions, see Figure 2

See table below for

dimensions

F, G a n d H

Figure 4 Condenser planning dimensions—MCM040, MCM080, MCM160 with/without Liebert Lee-Temp

Height to Top

of Fan Guard

Height to Top

of Fan Guard

46-5/16"

(1177mm)

46-1/4"

(1175mm)

Eyebolts for lifting condenser provided on four-fan models

46-1/4"

(1175mm)

Emerson recommends a clearance of 36" (915mm) on each side for proper operation and component access.

46"

(1168mm)

15-1/4" 387mm

™

15-1/4" 387mm

For dual

circuit only

ANCHOR PLAN

(One-Fan Condenser)

DPN002172, Rev 3 DPN002189, Rev. 4

Liebert

Model #

MCM040 1 57-3/16 (1453) — 48 (1219) 46-5/16 (1177) — 18 (457) 31-5/8 (803) 39-5/8 (1006

MCM080 2 105-1/4 (2674) — 96-1/16 (2440) 94-7/16 (2398) — 36 (914) 49-5/8 (1260) 57-5/8 (1464)

MCM160 4 202-7/16 (5142) 113-1/2 (2883) 192-1/4 (4883) 94-7/16 (2398) 96-3/16 (2444) 48 (1219) 61-5/8 (1565) 69-5/8 (1768)

Source: DPN002172, Rev. 3; DPN002189, Rev. 4

* 18" legs standard for all models. Cross-bracing required for legs longer than 18". Number varies according to model and options. See Tables 1 and 2 for weights, including added weight for legs of various lengths. Source: DPN002172, Rev. 3; and DPN002189, Rev. 4.

No.

FansAIn. (mm)

One-Fan

Condenser

39-5/16"

(999mm)

44-3/8"

In. (mm)

(1127mm)

Electric Box End

ANCHOR PLAN

Provided On

Four-Fan Models

In. (mm)

46"

(1168mm)

Leg supplied for

each Liebert

Lee-Temp kit on

2- & 4-fan models

39-5/16"

(999mm)

(1127mm)

Electric Box End

46-5/16"

(1177mm)

Leg

Height

F * In (mm) G H

60 (1524) 73-5/8 (1870) 81-5/8 (2073)

44-3/8"

Liebert® MC

™

Figure 5 Condenser planning dimensions–MCM120

Shown with typical 60" legs.

152-3/4"

(3880mm)

46-1/4"

1175mm

144-5/16"

(3666mm)

Liebert DSE receiver adds 8-1/2" (216mm) to the unit width and may be mounted on the right or left side.

DETAIL A

Electrical Box End

46"

(1169mm)

Fastener assembly, fender washer and hex nuts. 4 each required, 2 places

Spacer 2 each required, 2 places

Emerson recommends a clearance of 36" (915mm) on each end and each side for proper operation and component access.

46-5/16" (1177mm)

39-5/16" (999mm)

44-3/8" (1127mm)

1-7/8" (48mm)

94-7/16"

(2398mm)

Install two (2) each 1/8"(3.18mm) leg spacers in each of these locations (see note below)

NOTE: Install (2) two condenser leg spacers, part number 304679P1, in two places where shown, between each pair of legs that adjoin each other. Use (4) four of part number: 301375G1 (fastener assembly), 301369P1 (washer fender) and 301392P1 (nut hex), to secure each pair of legs and spacers together.

DPN002555 Rev. 1

ANCHOR PLAN

For typical footprint

dimensions, see Figure 2

See table below for

dimensions A, B and C

Site Preparation

Leg Height

A *, In. (mm)

18 (457) 31-5/8 (803) 39-5/8 (1006

36 (914) 49-5/8 (1260) 57-5/8 (1464) 48 (1219) 61-5/8 (1565) 69-5/8 (1768) 60 (1524) 73-5/8 (1870) 81-5/8 (2073)

In. (mm)

9Liebert

™

Figure 6 Condenser planning dimensions—MCL055, MCL110, MCL165 and MCL220

Emerson recommends a clearance of 36" (915mm) on each side for proper operation and component access.

Eyebolts for lifting condenser provided on 3&4 fan models

55-5/8"

(1413mm)

55-1/2"

(1409mm)

53-7/8"

(1368mm)

Electric Box End

48-3/4"

(1239mm)

Height to Top of Fan Guard

DPN002416 Rev. 2

ANCHOR PLAN

Provided on

3- & 4- Fan Models

For typical footprint

dimensions, see Figure 2

See Table 3 for

dimensions F, G and H

Site Preparation

Table 3 Condenser leg height and additional weight, MCL055, MCL110, MCL165 and MCK220

# of

Model #

MCL055 1

MCL110 2

MCL165 3

MCL220 4

* 18" legs standard for all models. Cross-bracing required for legs longer than 18" (457mm). Number varies according to model and options. See Tables 1 and 2 for weights, including added weight for legs of various lengths. Source: DPN002416, Rev. 2

FansAin. (mm)Bin. (mm)Cin. (mm)Din. (mm)Ein. (mm)

(1727)

124-1/8

(3152)

180-1/4

(4578)

236-5/16

(6003)

—

73-7/16

(1866)

129-9/16

(3291)

(1423)

112-1/8

(2848)

168-1/4

(4274)

224-3/8

(5699)

54-3/8 (1381)

110-1/2

(2806)

110-1/2

(2806)

110-1/2

(2806)

— 18 (457)

— 36 (914)

56-1/8 (1425)

112-1/4

(2851)

Leg Height

F * In. (mm)GIn. (mm)HIn. (mm)

35-7/8

(911)

53-7/8 (1368)

48 (1219)

60 (1524)

65-7/8 (1673)

77-7/8 (1978)

43-5/8 (1108)

61-5/8 (1565)

73-5/8 (1870)

85-5/8 (2175)

Liebert® MC

™

Site Preparation

Emerson recommends a clearance of 36" (915mm) on each side for proper operation and component access.

Eyebolts for lifting condenser provided on 3&4 fan models

55-1/2"

(1409mm)

53-7/8"

(1368mm)

55-5/8"

(1413mm)

Height

to Top of Fan Guard

54-3/8"

(1381mm)

Electric Box End

48-3/4"

(1239mm)

ANCHOR PLAN

(1) leg supplied for each Liebert Lee-Temp kit on 2, 3, & 4 fan models

Provided on 3- & 4- Fan Models

DPN002415 Rev. 3

For typical footprint

dimensions, see Figure 2

Figure 7 Cabinet and anchor dimensions—MCL055, MCL110, MCL165 and MCL220 with Liebert

Lee-Temp

™

receiver

# of

Model #

MCL055 1

MCL110 2

MCL165 3

FansAin. (mm)Bin. (mm)Cin. (mm)Din. (mm)Ein. (mm)

MCL220 4

(1727)

124-1/8

(3152)

180-1/4

(4578)

236-5/16

(6003)

73-7/16

(1866)

129-9/16

(3291)

—

(1423)

112-1/8

(2848)

168-1/4

(4274)

224-3/8

(5699)

Leg Height

F *

In. (mm)GIn. (mm)HIn. (mm)

54-3/8 (1381)

110-1/2

(2806)

110-1/2

(2806)

110-1/2

(2806)

11 Liebert® MC

— 18 (457)

— 36 (914)

56-1/8 (1425)

112-1/4

(2851)

48 (1219)

60 (1524)

35-7/8

(911)

53-7/8 (1368)

65-7/8 (1673)

77-7/8 (1978)

43-5/8

(1108

61-5/8 (1565)

73-5/8 (1870)

85-5/8 (2175)

™

3.0 INSPECTION AND INSTALLATION

3.1 Equipment Inspection

Before unpacking the condenser, verify that the labeled equipment matches the bill of lading. Carefully inspect all items for damage, either visible or concealed. Report any damage immediately to the carrier and your local Emerson representative. File a damage claim with the carrier and send a copy to your local Emerson representative.

3.1.1 Packing Material

All material used to package this unit is recyclable. Save it for future use or dispose of the material appropriately.

SAFETY INFORMATION

WARNING

Risk of improper handling. Can cause equipment damage, injury or death. Read all of the following instructions before attempting to move, lift, remove packaging from

or preparing unit for installation.

WARNING

Risk of heavy condenser falling or tipping over. Can cause property damage, serious injury or death.

Inspection and Installation

CAUTION

Risk of 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.

NOTICE

Risk of overhead interference. Can cause unit and/or structure damage. Refer to the installation plans before moving the unit to verify clearances.

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 storage. Can cause unit damage. Keep unit upright and protected from contact damage.

Liebert® MC

™

Figure 8 Equipment recommended for handling a Liebert condenser

Forklift Crane

Lift Beam, Slings

and Spreader Bars

308111 Pg. 1, Rev. 1

3.2 Handling Unit on the Skid

Transport unit using a forklift or a crane with sling and spreader bars.

• If using a fork lift, make sure the forks (if adjustable) are spread to the widest allowable distance to still fit under the skid.

• Type of fork lift used will be dependent on the terrain the unit to be moved across during handling.

• Minimum fork lift fork length for use on 1 and 2 fan units to be 48" (1219mm).

• When moving the packaged unit, do not lift the unit any higher than 6"(152mm) off the ground. If circumstances require the unit to be lifted higher than 6" (152mm), great care must be exercised and all personnel not involved in moving the unit must be at least 20' (5m) from the lift point of the unit.

Inspection and Installation

Figure 9 Forklift position with one-fan or two-fan condensers

• When using a forklift to off-load or move for installation, it is recommended to lift one narrow end off the ground no more than 6" (152mm). Use the forklift to push or pull the unit.

• When using a crane to lift the unit from a flat bed or to move for installation, using slings rated for the unit weight is recommended.

• Spreader bars are to be used for sling stability and to prevent unit pinching. Make sure spreader bars are wider than the unit.

• Slings are to be placed near the ends of the unit, under the top deck boards of the skid.

3.3 Unit Storage

• Store the fan in the original shipping packaging in a dry area protected from the weather, or protect it from dirt and weather until final installation.

• Avoid temperatures below -30°F (-34°C) and above 150°F (65°C).

• Avoid storing the Liebert MC condenser for longer than one year.

13 Liebert® MC

™

3.4 Unpacking the Condenser—All Unit Sizes

Step 5

Step 1-Domestic Step 1 - Export

Step 2

Detail Area

Unit Legs (Fasteners in bag attached to legs)

308111 Rev. 1

Steps 3 and 4

Step 6

To unpack a condenser with one to two fans:

1. Remove the fence for domestic packaging (for export packaging, remove the crate).

2. Remove corner and side foam planks from around the unit.

3. Remove the steel band holding the unit to the skid.

4. Set unit legs aside for use later.

5. Remove corrugated panels covering the Liebert MC’s coil(s).

6. Remove the bolts securing unit to the skid.

Figure 10 Removing protective material

Inspection and Installation

Liebert® MC

™

Inspection and Installation

308111 Rev. 1

308111 Pg. 2, Rev. 1

Straps go against legs on one-fan and two-fan units

Straps or chains go against eyebolts on three-fan and four-fan units

3.5 Preparing a Condenser for Moving and Installation—Units with One or Two Fans

The following procedure is one recommended method for removing a Liebert condenser from its shipping skid. Other methods may be used, provided that they are safe for personnel, the condenser and equipment.

3.5.1 Attaching Legs, Removing the Skid and Attaching Slings-Units with One or Two Fans

1. Attach legs to the unit at indicated locations. Use the fasteners provided with the legs. Recommended tools for attachment is a 5/8" socket and ratchet. More legs may be available for installation than shown. This will depend on the unit type and

number of fans.

Figure 11 Attaching legs to one-fan or two fan condensers

Detail B

2. Place slings around the unit between the unit and the top deck boards of the skid:

• One-fan and two-fan units: against the inside of the attached legs.

• Three-fan and four-fan units: against the outside of the attached eye bolts.

3. Use spreader bars, a lift beam and a crane to lift the unit off the skid.

NOTICE

Risk of improper lifting. Can cause equipment damage. Make sure that the spreader bars wider are than the unit. If the spreader bars are too short,

the slings may crush the unit.

Figure 12 Securing slings to condensers for lifting off skid

15 Liebert® MC

™

+ 47 hidden pages