Liebert Mini-Mate2 MMD24E Manuals

Table of Contents

• 3

  Table of Contents
• 9

  Important Safety Instructions
• 9

  Save These Instructions
• 11

  Product Number Nomenclature
• 11

  Figure 1 Model Number Nomenclature-Evaporator Units
• 11

  Figure 2 Model Number Nomenclature-Air-Cooled, Indoor Condensing Units
• 12

  Figure 3 Model Number Nomenclature-Outdoor Air-Cooled Prop Fan Condensing Units
• 12

  Figure 4 Model Number Nomenclature-Water/Glycol-Cooled Condensing Units
• 13

  Figure 5 Model Number Nomenclature-Chilled Water Units
• 14

  Introduction
• 14

  Designed to Match Computer and Electronic Equipment Needs-From Installation
  • 14

    To Operation
• 15

  Standard Features -2 & 3 Ton Systems
• 15

  Evaporator Section - Split Systems
• 15

  Condensing Unit Section-Split Systems
  • 15

    Indoor Centrifugal Fan Condensing Units
  • 15

    Outdoor Prop Fan Condensing Units
  • 15

    Indoor Water/Glycol Condensing Units
• 16

  System Controls
  • 16

    Other Standard Control Features
  • 16

    Figure 6 Wall-Box
• 17

  Optional Factory-Installed Features-Evaporator/Chilled Water Units
• 17

  Reheat
• 17

  Humidifier
• 17

  Sensors
• 17

  Switches and Motors
• 18

  Free-Cooling
• 18

  Optional Configurations-Prop Fan Condensing Units
• 18

  Optional Configurations-Water/Glycol Condensing Units
• 18

  Optional Configurations-Chilled Water Units
• 18

  Figure 7 Free-Cooling Arrangement
• 19

  Ship -Loose Accessories -Field -Installed
• 20

  Remote Monitoring, Autochangeover and Leak Detection Equipment
• 21

  Site Preparation and Installation
• 21

  Installation Considerations
  • 21

    System Configurations
  • 21

    Table 1 System Configurations - 60Hz
  • 21

    Table 2 System Configurations - 50Hz
  • 21

    Table 3 Application Limits, Evaporator and Chilled Water Units
  • 22

    Room Preparation
  • 22

    Location Considerations
  • 23

    Figure 8 Air-Cooled Systems, 2 and 3 Tons
  • 23

    Figure 9 Water/Glycol-Cooled Systems, 2 and 3 Tons
  • 23

    Figure 10 Chilled Water Systems, 3 Tons
• 24

  Ceiling Unit Weights
• 24

  Equipment Inspection-Upon Receipt
• 24

  Packaging Material
• 24

  Installing the Ceiling Units
  • 24

    Table 6 Ceiling Unit Weights
  • 25

    Close-Coupled Installations
  • 25

    Evaporator Air Distribution
  • 25

    Figure 11 Threaded Rod and Hardware Kit Installation
  • 26

    Piping Connections and Coolant Requirements
  • 26

    Table 7 Cooling Unit Air Flow at 0.3 IWG (75PA) ESP
  • 29

    Figure 12 Refrigerant Piping Diagram
  • 30

    Table 10 Line Charges - Refrigerant Per 100 Ft. (30M) of Type L Copper Tube
  • 30

    Table 11 Refrigerant Charge in Liebert Pre-Charged R-407C Line Sets
  • 30

    Table 12 Equivalent Lengths for Various Pipe Fittings, Ft (M)
  • 30

    Table 8 Recommended Refrigerant Line Sizes
  • 30

    Table 9 Pipe Length and Condenser Elevation Relative to Evaporator
  • 31

    Table 13 Refrigerant Charge
  • 31

    Table 14 Connection Sizes and Torque
  • 32

    Figure 13 Dimensions, Evaporator and Chilled Water Units with Direct Drive Blower
  • 32

    Table 15 Net Weights-Evaporator and Chilled Water Units
  • 33

    Figure 14 Dimensions, Evaporator Units with Optional Belt Drive Blower Assembly
  • 33

    Table 16 Net Weight, High Static Blower Module
  • 34

    Figure 15 Evaporator and Chilled Water Unit Piping Data
  • 35

    Condensate Pump Kit Installation-All Units
  • 35

    Electrical Connections
  • 37

    Figure 16 Evaporator and Chilled Water Unit Electrical Connections
• 38

  Indoor Air-Cooled Centrifugal Fan Condensing Unit Installation
  • 38

    Location Considerations
  • 38

    Electrical Connections
  • 38

    Figure 17 Close-Coupled Installation
  • 39

    Piping Connections
  • 39

    Ducting
  • 39

    Table 17 Indoor Condensing Unit Airflow, CFM at 0.5 Iwg Esp
  • 40

    Figure 18 Indoor Air-Cooled Centrifugal Condenser Dimensions and Pipe Connections
  • 40

    Table 18 Centrifugal Condenser Dimensions, Weights
  • 41

    Figure 19 Centrifugal Condenser Electrical Connections
• 42

  Outdoor Air Cooled Condensing Unit Installation
  • 42

    Location Considerations
  • 42

    Figure 20 Cabinet and Floor Planning Dimensional Data, Outdoor Condensing Unit
  • 43

    Piping Connections
  • 43

    Electrical Connections
  • 43

    Table 19 Dimensions and Net Weights-Air-Cooled Outdoor Condensing Units
• 44

  Water and Glycol Cooled Condensing Unit
  • 44

    Location Considerations
  • 44

    Figure 21 General Arrangement (Air- Cooled Condensing Unit)
  • 45

    Figure 22 Cabinet Dimensions and Piping Data, Water/Glycol Indoor Condensing Module
  • 45

    Table 20 Net Weight, Indoor Water/Glycol-Cooled Condensing Unit
  • 46

    Electrical Connections
  • 46

    Piping Connections
  • 47

    Figure 23 General Arrangement, Water/Glycol Split Systems
• 48

  Optional Equipment Piping
  • 48

    Free-Cooling Coil
  • 48

    Figure 24 Optional Free-Cooling Coil (3-Way Valve) On Water/Glycol Units
  • 49

    Hot Water Reheat Coil
  • 49

    Figure 25 Optional Hot Water Reheat (Two-Way Valve)
• 50

  Checklist for Completed Installation
• 51

  Microprocessor Control
• 51

  Feature Overview
• 51

  Figure 26 Control Key Locations-All-Mounted Display Box
• 52

  Main Menu <Menu
• 52

  Setpoints
• 52

  Table 21 View Default Setpoints and Allowable Ranges
• 53

  Status
• 53

  Active Alarms
• 53

  Time
• 53

  Date
• 53

  Setback
• 53

  Table 22 Microprocessor Night and Weekend Setback
• 54

  Setup Operation
  • 54

    Restart Time Delay
  • 54

    C/F Degrees
  • 54

    Humidity Control Method
• 54

  Change Passwords
• 54

  Table 23 Setup Functions, Default Values and Allowable Ranges
• 55

  Calibrate Sensors
• 55

  Alarm Enable
• 55

  Alarm Time Delay
• 55

  Common Alarm Enable
• 55

  Table 24 Alarm Default Time Delays
• 56

  Custom Alarms
  • 56

    6.15.1 Standard Custom Alarm Messages
• 56

  Custom Text
• 57

  Table 25 Switch Settings (Wall Box Board)
• 57

  Table 26 Equipment Switch Settings (Unit Control Board)
• 58

  Run Diagnostics (Available On Rev 1.001.0 and Higher)
• 59

  Figure 27 Control Menu
• 60

  Figure 28 Control Board (Inside Evaporator)
• 60

  Figure 29 Wall Box Board
• 61

  System Performance Microprocessor Controls
• 61

  Temperature Control
  • 61

    Cooling/Heating Required
  • 61

    Cooling Operation (Cooling, Compressorized Direct Expansion and Chilled Water)
  • 61

    Table 27 Cooling and Dehumidification Load Response of Hot Gas Bypass
  • 62

    Heating Operation
  • 62

    Figure 30 Ground Current Detector
• 63

  Humidity Control
  • 63

    Dehumidification/Humidification Required
  • 63

    Dehumidification Operation, Compressorized Direct Expansion (DX) Systems
  • 63

    Humidification Operation
• 63

  Load Control Features
  • 63

    Communication
• 64

  Alarms
• 64

  Standard Alarms: Definitions and Troubleshooting
  • 64

    Custom Alarms
  • 64

    High Head Pressure
  • 65

    Humidity Level
  • 65

    Temperature
  • 65

    Humidifier Problem Alarm
  • 65

    High Water Alarm
  • 65

    Loss of Power
  • 66

    Short Cycle
• 66

  Optional/Custom Alarms
  • 66

    Change Filter
  • 66

    High Temperature Sensor
  • 66

    Smoke Detected
• 67

  System Testing and Maintenance
• 67

  System Testing
  • 67

    Environmental Control Functions
  • 67

    Cooling
  • 67

    Heating
  • 67

    Humidification
• 68

  Maintenance
  • 68

    Electric Panel
  • 68

    Filters
  • 68

    Direct Drive Blower Package
  • 69

    High Static Belt Drive Blower Package (Option)
  • 69

    Refrigeration System
  • 69

    Table 28 External Static Pressure Available
  • 69

    Table 29 Typical Discharge Pressure
  • 71

    Figure 31 Hot Gas Bypass
  • 72

    Humidifier Circuit Board Adjustments
• 73

  Replacement Procedures
  • 73

    Compressor Replacement
  • 73

    Table 30 DIP Switch Settings for Humidifier Control Board
  • 74

    Electrical Failure
  • 75

    Replacing the Humidifier Canister
• 76

  Maintenance Inspection Checklist
• 77

  Troubleshooting
• 77

  Table 31 Troubleshooting