Benutzerhandbuch für Liebert 8 Tons

Inhaltsverzeichnis

• Model Number Nomenclature

  7
• 1.0 Product Features

  9
  • 1.1 Standard Product Features

    9
    • 1.1.1 Controls

      9
    • 1.1.2 Evaporator System Components

      9
      • DX Evaporator Section

        9
      • Chilled-Water Model

        9
    • 1.1.3 Condensing Unit Components

      9
      • Air-Cooled Condensing Unit (Indoor Centrifugal)

        9
      • Air-Cooled Condensing Unit (Outdoor Prop Fan)

        9
      • Water/Glycol Condensing Unit (Indoor)

        9
  • 1.2 Optional Equipment

    10
    • 1.2.1 Canister Humidifier

      10
    • 1.2.2 Electric Reheat

      10
    • 1.2.3 SCR Electric Reheat

      10
    • 1.2.4 Hot Gas Bypass (Condensing Units)

      10
    • 1.2.5 Free-Cooling Coil (GLYCOOL)

      10
    • 1.2.6 Smoke Detector

      10
    • 1.2.7 Firestat

      10
    • 1.2.8 Filter Clog

      10
  • 1.3 Ancillary (Ship Loose Accessories)

    11
    • 1.3.1 Single Point Power Kit

      11
    • 1.3.2 Refrigerant Line Sweat Adapter Kits

      11
    • 1.3.3 Return Air Filter Box with Duct Collar Kit

      11
    • 1.3.4 Condensate Pump Kit

      11
    • 1.3.5 Remote Monitoring and Control

      11
    • 1.3.6 Remote Sensors

      11
• 2.0 Site Preparation and Installation

  12
  • 2.1 Installation Considerations

    12
    • Table 1 Application limits, evaporator and chilled-water units*

      12
    • Table 2 Application limits, indoor and outdoor air-cooled condensing units

      12
    • Table 3 Application limits, indoor water/glycol-cooled condensing units

      12
    • 2.1.1 Room Preparation

      12
    • 2.1.2 Location Considerations

      13
      • Figure 1 System configurations-air cooled systems

        14
      • Figure 2 System Configurations-water/glycol systems

        14
      • Figure 3 System Configurations-chilled water systems

        15
  • 2.2 System Weights

    15
    • Table 4 Unit weights

      15
  • 2.3 Equipment Inspection upon receipt

    15
  • 2.4 Installing the Evaporator or Chilled-Water Units

    16
    • Figure 4 Threaded rod and hardware kit installation

      16
    • 2.4.1 Close Coupled Installations

      17
      • Figure 5 Close coupled installation

        17
    • 2.4.2 Evaporator Air Distribution

      18
      • Filter Box

        18
      • Connections for Ducted Systems

        18
        • Table 5 Evaporator external static pressure (60) at 3750 CFM (6371 CMH)

          18
    • 2.4.3 Piping Connections and Coolant Requirements

      19
      • Drain Line

        19
        • Figure 6 Drain installation

          19
      • Condensate Pump

        20
        • Figure 7 Condensate pump installation

          20
      • Humidifier Water Supply Line

        20
      • Chilled-Water Piping-Chilled-water Systems Only

        21
        • Figure 8 General arrangement diagram - chilled-water systems

          21
      • Refrigerant (R-22) Piping

        22
        • Table 6 Recommended refrigerant line sizes

          22
        • Figure 9 Refrigerant piping diagram

          22
      • Total refrigerant = Units and Lines

        23
        • Table 7 8-ton unit refrigerant charge

          23
        • Table 8 Line charges (field piping)*

          23
      • Quick Connect Fittings

        23
        • Table 9 Refrigerant quick connect sizes and torque

          23
        • Figure 10 Evaporator or chilled-water unit dimensional data

          24
    • 2.4.4 Electrical Connections, Evaporator or Chilled-Water Unit

      25
      • Power Connections

        25
      • Control Connections (10-wire on air-cooled, 8-wire on water/glycol cooled)

        25
        • Figure 11 Evaporator unit electrical connections

          26
  • 2.5 Indoor Air-Cooled Centrifugal Fan Condensing Unit Installation

    27
    • 2.5.1 Location Considerations

      27
    • 2.5.2 Ducting

      27
      • General Considerations

        27
      • Considerations for Specific Applications

        27
    • 2.5.3 Piping Connections

      28
      • Figure 12 Piping connections - indoor air-cooled centrifugal fan condensing unit

        28
    • 2.5.4 Electrical Connections - Condensing Unit

      28
      • Power Connections

        28
      • Control Connections

        28
        • Figure 13 Indoor air-cooled centrifugal condensing unit dimensions and pipe connections

          29
        • Figure 14 Indoor air-cooled centrifugal condenser electrical connections

          30
  • 2.6 Outdoor Air-Cooled Condensing Unit Installation

    31
    • 2.6.1 Location Considerations

      31
    • 2.6.2 Piping Connections

      31
    • 2.6.3 Electrical Connections

      31
      • Power Connections

        31
      • Control Connections

        31
        • Figure 15 Electrical field connections - outdoor condensing unit

          32
        • Figure 16 Footprint dimensions - outdoor condensing unit

          33
        • Figure 17 Piping and electrical connections - outdoor condensing unit

          34
  • 2.7 Indoor Water- and Glycol-Cooled Condensing Unit Installation

    35
    • 2.7.1 Location Considerations

      35
    • 2.7.2 Piping Connections

      35
      • Water/Glycol Piping Considerations

        35
      • Condensing Unit Fluid Requirements

        35
      • Regulating Valve

        35
    • 2.7.3 Electrical Connections

      35
      • Control Connections

        35
        • Figure 18 Indoor water/glycol condensing unit dimensional data

          36
        • Figure 19 Indoor water/glycol condensing unit electrical field connections

          37
        • Figure 20 System piping with indoor water/glycol-cooled condensing unit

          38
  • 2.8 Optional Equipment Piping

    39
    • 2.8.1 Free-Cooling Coil (GLYCOOL)

      39
      • Figure 21 Optional free cooling coil (3-way valve) on water/glycol units

        39
      • Figure 22 Optional free cooling coil (3-way valve) on air-cooled units

        40
  • 2.9 Checklist for Completed Installation

    41
• 3.0 Microprocessor Control

  42
  • 3.1 Feature Overview

    42
    • Figure 23 Wall box

      42
  • 3.2 Main Menu <Menu>

    43
  • 3.3 Setpoints

    44
    • Table 10 Default setpoints and allowable ranges

      44
  • 3.4 Status

    44
  • 3.5 Active Alarms

    44
  • 3.6 Alarm History

    44
  • 3.7 Time

    45
  • 3.8 Date

    45
  • 3.9 Setback

    45
    • Table 11 Night and weekend setback plan

      45
  • 3.10 Setup Operation

    45
    • 3.10.1 Restart Time Delay

      45
    • 3.10.2 C/F Degrees

      46
    • 3.10.3 Humidity Control Method

      46
    • 3.10.4 Lead Compressor

      46
    • 3.10.5 Show DIP Switch

      46
    • 3.10.6 Valve Time (For Systems With a Modulating Chilled-Water Valve)

      46
    • 3.10.7 CW Flush (For Systems With a Modulating Chilled-Water Valve)

      47
      • Table 12 Setup functions, default values and allowable ranges

        47
  • 3.11 Change Passwords

    47
  • 3.12 Calibrate Sensors

    47
  • 3.13 Alarm Enable

    47
  • 3.14 Alarm Time Delay

    48
    • Table 13 Alarm default time delays

      48
  • 3.15 Common Alarm Enable

    48
  • 3.16 Custom Alarms

    48
  • 3.17 Custom Text

    49
    • LCD Display Contrast

      49
    • Nonvolatile Memory

      49
    • Equipment Options Switches

      49
      • Table 14 Equipment switch settings (unit control board)

        49
      • Table 15 Switch settings (wallbox board)

        49
  • 3.18 Run Diagnostics

    50
    • Test Outputs

      50
    • Test Inputs

      50
    • Test Micro

      51
      • Figure 24 Control menu

        51
      • Figure 25 Control board (inside evaporator)

        52
      • Figure 26 Wall box board

        52
• 4.0 System Performance Microprocessor Controls

  53
  • 4.1 Control Type Response Proportional Control

    53
  • 4.2 Cooling

    53
    • 4.2.1 Multi-Step Cooling, Compressorized Direct Expansion (DX) Systems

      53
    • 4.2.2 Chilled-Water Cooling (8 Ton)

      53
    • 4.2.3 GLYCOOL Cooling (8 Ton)

      53
  • 4.3 Reheat

    53
    • 4.3.1 Electric Reheat - Staged

      53
    • 4.3.2 SCR Electric Reheat

      53
  • 4.4 Dehumidification / Humidification Percent Required

    54
    • 4.4.1 Staged Dehumidification, Compressorized Direct Expansion (DX) Systems

      54
    • 4.4.2 Humidification Operation

      54
      • System Activation

        54
    • 4.4.3 Dehumidification Lockout

      54
  • 4.5 Load Control Features

    54
  • 4.6 Communications

    54
• 5.0 Alarms

  55
  • 5.1 Alarms: Definitions and Troubleshooting

    55
    • 5.1.1 Custom Alarms

      55
    • 5.1.2 High Head Pressure

      55
      • Air-Cooled Systems

        55
      • Water/Glycol Systems

        55
    • 5.1.3 Humidity

      56
    • 5.1.4 Temperature

      56
    • 5.1.5 Humidifier Problem Alarm

      56
    • 5.1.6 High-Water Alarm

      56
    • 5.1.7 Loss of Power

      56
    • 5.1.8 Short Cycle

      56
  • 5.2 Optional/Custom Alarms

    57
    • 5.2.1 Change Filter

      57
    • 5.2.2 Firestat

      57
    • 5.2.3 Smoke Detector

      57
• 6.0 System Operation, Testing, and Maintenance

  58
  • 6.1 System Testing

    58
    • 6.1.1 Environmental Control Functions

      58
    • 6.1.2 Cooling

      58
    • 6.1.3 Heating

      58
    • 6.1.4 Humidification

      58
    • 6.1.5 Dehumidification

      58
    • 6.1.6 Remote Shutdown

      58
  • 6.2 Maintenance and Component Operation

    59
    • 6.2.1 Electric Panel

      59
    • 6.2.2 Filters

      59
    • 6.2.3 Blower System

      59
      • Air Distribution

        59
      • Blower Removal (Evaporator)

        59
    • 6.2.4 Electric Reheat

      60
    • 6.2.5 Refrigeration System

      60
      • Suction Pressure

        60
      • Discharge Pressure

        60
        • Table 16 Typical discharge pressures

          60
      • Thermostatic Expansion Valve

        60
      • Air-Cooled Condensing Units

        60
      • Coaxial Condensers (Water/Glycol-Cooled Condensing Units)

        60
      • Regulating Valves (Water/Glycol Condensing Units)

        61
      • Glycol Solution Maintenance

        61
      • Hot Gas Bypass (Optional)

        61
      • Replacement Procedures

        62
    • 6.2.6 Steam Generating Humidifier - Operation Procedures

      63
      • Replacing the Humidifier Canister

        64
    • 6.2.7 Circuit Board Adjustments

      64
      • Table 17 Humidifier control board DIP switch settings

        64
• 7.0 Maintenance Inspection Checklist

  65
  • FILTERS

    65
  • BLOWER SECTION

    65
  • REHEAT

    65
  • HUMIDIFIER

    65
  • REFRIGERATION CYCLE/SECTION

    65
  • ELECTRICAL PANEL

    65
  • COMMENTS _________________________________________________________________________

    65
  • _________________________________________________________________________

    65
  • COMPRESSOR

    65
  • CONTROLS

    65
  • AIR-COOLED CONDENSER/ DRYCOOLER

    65
  • WATER/GLYCOL CONDENSER

    65
  • GLYCOL PUMP

    65
• 8.0 Troubleshooting

  66
  • Table 18 Troubleshooting

    66