用户手册目录1.0 Introduction91.1 System Description91.1.1 Compressorized Two-Step Systems9Cooling9Heating9Humidification9Dehumidification91.1.2 Compressorized Four-Step Systems9Cooling9Heating9Humidification9Dehumidification91.1.3 Chilled Water Systems10Cooling10Heating10Humidification10Dehumidification101.1.4 GLYCOOL™ (Chilled Glycol Cooling) Systems10Cooling10Heating10Humidification10Dehumidification101.1.5 Dual Source Cooling Systems10Cooling10Heating10Humidification10Dehumidification102.0 Initial Start-Up Procedure112.0.1 Additional Considerations for Upflow Units113.0 Advanced Microprocessor Controls Setup123.1 Basics12Figure 1 Advanced microprocessor control panel123.2 Display the Main Menu-AM Control12Figure 2 Advanced microprocessor (AM) control menu133.3 Main Menu (AM)-Status/Alarm Data143.3.1 Active Alarms143.3.2 Operating Status143.3.3 Alarm History Log143.3.4 Run Hours Log143.3.5 Analog Sensors153.4 Main Menu (AM)-Setpoints/Setup153.4.1 View Setpoints Selection15Table 1 Default control and alarm setpoints153.4.2 Setup System Selection15Setup Operation16Table 2 Setup functions and factory default values16Select Options17Table 3 Select options17Calibrate Sensors17Show DIP Switches17Table 4 DIP switch settings17Select Control Type18Setup Alarms18Table 5 Alarm default time delay19Standard Alarm Messages20Humidity Control Method20Analog Setup20Set Status Display21Calibrate Actuator213.4.3 Run Diagnostics21Show Inputs21Test Outputs22Test Control Board223.4.4 Change Passwords223.5 Main Menu (AM)-Date and Time223.6 Main Menu (AM)-Status Display233.7 Load Control Features233.7.1 Short Cycle Control233.7.2 Sequential Load Activation Control233.7.3 Compressor Sequencing Control233.8 Control Circuit Board233.8.1 LCD Display Contrast233.8.2 Nonvolatile Memory243.8.3 DIP Switches243.8.4 Control Outputs24Table 6 Control output LEDs243.9 Communications24Liebert Site Product Device243.9.1 Monitor functions253.9.2 View/Change Functions254.0 Advanced Microprocessor with Graphics Control Setup264.1 Basics26Figure 3 Advanced microprocessor with graphics control panel26Figure 4 Advanced microprocessor with graphics (AG) control menu274.2 Display the Main Menu-AG Control284.3 Main Menu (AG)-Status Display284.4 Main Menu (AG)-View/Set Alarms284.4.1 Active Alarms284.4.2 Alarm History Log284.4.3 Setup Alarms29Table 7 Alarm default time delay294.4.4 Set Up Custom Alarms30Standard Custom Alarm Messages304.4.5 View Water Detect Floor Plan (for optional LTM1000/LT750)304.4.6 Setup Water Detect Floor Plan30Installation-LT750 DIP Switch Settings304.5 Main Menu (AG)-Operating Status314.6 Main Menu (AG)-View/Set Control Setpoints31Table 8 Default control and alarm setpoints314.7 Main Menu (AG)-Setup System314.7.1 Setup Operation32Cold Start Delay32Auto Restart Delay32IR Flush Overfill (infrared humidifiers only)32Chilled Water/Hot Water/Econ-O-Coil Flush32Display in Degrees32Default Settings and Ranges32Table 9 Setup functions and factory default values324.7.2 Select Options33Table 10 Select options334.7.3 Calibrate Sensors334.7.4 Calibrate Valve Actuator334.7.5 Select Control Algorithm334.7.6 Select Humidity Sensing Mode344.7.7 Set Status Display344.7.8 Change Passwords344.8 Main Menu (AG)-Run Diagnostics344.8.1 Show Inputs354.8.2 Test Outputs354.8.3 Test Control Board354.8.4 DIP Switches36Table 11 DIP switch settings36Dehumidification with Normal or Delayed Reheat364.9 Main Menu (AG)-Date and Time364.10 Main Menu (AG)-Plot Graphs364.10.1 Modify Plot Scales374.11 Main Menu (AG)-Analog/Digital Inputs374.11.1 Read Analog Inputs374.11.2 Setup Analog Inputs37Slope37Intercept37Text374.11.3 Read Digital Inputs384.11.4 Set Up Digital Inputs384.12 Main Menu (AG)-View Run Hours Log384.12.1 View 24 Hour Run Time History384.12.2 View Total Run Hours384.13 Load Control Features384.13.1 Short Cycle Control384.13.2 Sequential Load Activation Control384.13.3 Compressor Sequencing Control394.14 Control Circuit Board394.14.1 LCD Display Contrast394.14.2 Nonvolatile Memory394.14.3 DIP Switches394.14.4 Control Outputs40Table 12 Control output LEDs404.15 Communications40Liebert Site Product Device404.15.1 Monitor functions:404.15.2 View/Change Functions:405.0 Response by Control Type-Advanced Microprocessor Controls415.1 Temperature Control415.1.1 Cooling/Heating Required, in Percent (%)415.1.2 Response to Control Types41Proportional Control41PID Control41Intelligent Control415.1.3 Cooling Operation42Two-Step Cooling, Compressorized Direct Expansion (DX) Systems42Four-Step Cooling, Compressorized Direct Expansion (DX) Systems)42GLYCOOL™ Cooling42Dual Cooling Source42Chilled Water Cooling425.1.4 Heating Operation42Electric Reheat42Hot Water/Steam Heat435.2 Humidity Control435.2.1 Dehumidification/Humidification Required, in Percent (%)435.2.2 Control Types43Proportional Control43PID Control43Intelligent Control435.2.3 Dehumidification Operation43One-Stage Dehumidification, Compressorized Direct Expansion (DX) Systems43Two-Stage Dehumidification, Compressorized Direct Expansion (DX) Systems43Normal or Delayed Reheat (for Two-Stage Dehumidification Only)43Dual Cooling Source Dehumidification44Chilled Water Dehumidification445.2.4 Humidification Operation44System Activation445.2.5 Control Types44Proportional Control44PID Control44Suggested System Tuning Procedure45Intelligent Control465.3 Load Control Features475.3.1 Short Cycle Control475.3.2 Sequential Load Activation Control475.3.3 Compressor Sequencing Control475.4 Analog Sensors485.4.1 Connecting the Analog Sensors48Table 13 Changing factory-set sensor inputs48Table 14 Additional connections available after unit delivery48Figure 5 Analog input jumpers485.4.2 Water Detection Display49Figure 6 Connecting the LT75049Physical Connections49Setup49Calibration505.5 Communications50Liebert Site Product Device505.5.1 Monitor functions:505.5.2 View/Change Functions:516.0 Alarm Descriptions and Solutions526.1 Standard Alarms526.1.1 Change Filter526.1.2 Compressor Overload526.1.3 Custom Alarms (Only With Advanced Controls)536.1.4 High Head Pressure536.1.5 High Humidity536.1.6 High Humidity and Low Humidity (Simultaneously)536.1.7 High Temperature536.1.8 High Temperature and Low Temperature (Simultaneously)536.1.9 Humidifier Problem53Infrared Humidifiers53Steam Generating (Canister) Humidifiers536.1.10 Loss of Air Flow546.1.11 Loss of Power546.1.12 Low Humidity546.1.13 Low Suction Pressure546.1.14 Low Temperature546.1.15 Main Fan Overload546.1.16 Short Cycle546.2 Optional/Custom Alarms556.2.1 Loss of Water Flow556.2.2 Smoke Detected556.2.3 Standby GC Pump On556.2.4 Standby Unit On556.2.5 Water Under Floor557.0 Component Operation and Maintenance, Checks and Adjustments567.1 System Testing567.1.1 Environmental Control Functions56Cooling56Heating56Humidification56Dehumidification56Proportional Heating/Cooling/ Dehumidification567.1.2 Electric Panel57Control Transformer and Fuses57Fan Safety Switch57Firestat57Smoke Detector57Water Detection Sensor57Remote Shutdown577.2 Filters587.3 Blower Package587.3.1 Fan Impellers and Bearings587.3.2 Belts587.3.3 Electronic Variable Speed Drive (Inverter)597.4 Refrigeration System597.4.1 Compressor Oil Level597.4.2 Suction Pressure60Table 15 Suction pressures607.4.3 Discharge Pressure60Table 16 Discharge pressures607.4.4 Suction Superheat607.4.5 Thermostatic Expansion Valve60Operation60Adjustment617.4.6 Hot Gas Bypass Valve61Operation61Adjustment61Figure 7 Hot gas bypass617.4.7 Air Cooled Condenser62Checking Refrigerant Charge (Lee-Temp™/ Flood Back Head Pressure Control)62Figure 8 Outdoor fan/condenser configuration627.4.8 Water/Glycol Cooled Condensers63Shell and Tube Condensers63Regulating Valves63Adjustment (Johnson Controls/Penn Johnson valves)63Testing Function of Valve63Glycol Solution Maintenance637.4.9 Compressor Replacement64Mechanical Failure64Electrical Failure64Compressor Replacement Procedure657.5 Humidifier657.5.1 Infrared Humidifier65Changing Humidifier Lamps66Figure 9 Infrared humidifier lamps66Autoflush Infrared Humidifier Cleaning System66Autoflush Operation667.5.2 Steam Generating Humidifier67Figure 10 Steam generating humidifier67Operation67Controls68Figure 11 Run/drain switch68Replacing the Canister68Table 17 Humidifier canister part numbers69Table 18 Faults-canister generator humidifier69Circuit Board Adjustments70Table 19 Steam generating humidifier capacity70Figure 12 Steam generating humidifier control board71Table 20 DIP switch settings for steam generating humidifier717.6 Electric Reheat718.0 Troubleshooting72Table 21 Blower troubleshooting72Table 22 Chilled water troubleshooting72Table 23 Compressor and refrigeration system troubleshooting73Table 24 Dehumidification troubleshooting75Table 25 Glycol pumps troubleshooting75Table 26 Humidifier-steam generator troubleshooting76Table 27 Humidifier-infrared troubleshooting77Table 28 Reheat troubleshooting779.0 Maintenance Inspection Checklist-Monthly7810.0 Maintenance Inspection 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