Liebert 8 Tons TB3-4 Connection to Terminal #4 Wallbox, TB3-3 Connection to Terminal #3 Wallbox

Page 52

Microprocessor Control

Figure 25 Control board (inside evaporator)

				P7		P18	P25	T+	TB3-4	Connection to Terminal #4 Wallbox
P32	P40			P7		P18		T+	TB3-4	Connection to Terminal #4 Wallbox
P32	P40							T-	TB3-3	Connection to Terminal #3 Wallbox
P8								+5V	TB3-2	Connection to Terminal #2 Wallbox
P8								GND	TB3-1	Connection to Terminal #1 Wallbox
P33
	P34							P26
								P26
								P5
								P16	P16 Remote Sensor Connection
								P10
	P35							P43
								P43
P36	P22	P38	P39	P3	P2	P1	P4	TB
P36
								G2 G3 G4 G5

Figure 26 Wall box board

TB3-1

TB3-2

TB3-3

TB4-4

Wall Box

DIP Switches (1-8)

44

Image 52

Contents Liebert Mini-Mate2 Page Table of Contents Microprocessor Control System Performance Microprocessor ControlsAlarms System OPERATION, TESTING, and MaintenanceFigures Table iii Heat rejection matchup 60 Hz Table iv Heat rejection matchup 50 HzPage Standard Product Features Optional Equipment Ancillary Ship Loose Accessories Installation Considerations Input Voltage Entering Fluid Temperature MinRoom Preparation Application limits, evaporator and chilled-water unitsLocation Considerations Drycooler Evaporator Unit weights System WeightsEquipment Inspection upon receipt Nylock Installing the Evaporator or Chilled-Water UnitsLocking nut Hex nut Close Coupled Installations Nut Clamps are for shipping purposes onlyEvaporator Air Distribution Filter Box Connections for Ducted SystemsEvaporator external static pressure 60 at 3750 CFM 6371 CMH Hp Motor std Hp Motor opt Turns External OpenDrain installation Piping Connections and Coolant Requirements Drain LineCondensate Pump Humidifier Water Supply LineGeneral arrangement diagram chilled-water systems Chilled-Water Piping-Chilled-water Systems OnlyRecommended refrigerant line sizes Refrigerant R-22 PipingEquivalent Suction Feet Circuit Liquid Line Total refrigerant = Units and Lines Quick Connect FittingsTon unit refrigerant charge Line charges field pipingOptional Filter BOX Power Connections Electrical Connections, Evaporator or Chilled-Water UnitEvaporator unit electrical connections Front of UnitGeneral Considerations DuctingConsiderations for Specific Applications Electrical Connections Condensing Unit Piping ConnectionsControl Connections DPN000248Rev1 Heat rejection connection. Field Outdoor Air-Cooled Condensing Unit Installation Electrical ConnectionsElectric service connection High voltageLow voltage Earth ground connectionFootprint Dimensions 152 11-1/2292 Condensing Unit Fluid Requirements Water/Glycol Piping ConsiderationsRegulating Valve Indoor water/glycol condensing unit dimensional data Site Preparation and Installation Two circuits provided. Single circuit shown Optional Equipment Piping Optional free cooling coil 3-way valve on water/glycol unitsOptional free cooling coil 3-way valve on air-cooled units Checklist for Completed Installation Feature Overview Wall boxMain Menu Menu Active Alarms Alarm HistoryDefault setpoints and allowable ranges SetpointsSetup Operation Restart Time DelayTime DateShow DIP Switch 10.2 C/F DegreesHumidity Control Method Lead CompressorChange Passwords Alarm EnableSetup functions, default values and allowable ranges Calibrate SensorsAlarm Time Delay Common Alarm EnableCustom Alarms Alarm default time delaysEquipment Options Switches Custom TextLCD Display Contrast Nonvolatile MemoryTest Outputs Run DiagnosticsTest Inputs Test Micro TB3-1 TB3-2 TB3-3 TB4-4 Wall Box DIP Switches TB3-4 Connection to Terminal #4 WallboxTB3-3 Connection to Terminal #3 Wallbox TB3-2 Connection to Terminal #2 WallboxCooling Control Type Response Proportional ControlReheat Load Control Features Dehumidification / Humidification Percent RequiredCommunications Humidification Operation System ActivationAlarms Definitions and Troubleshooting Custom AlarmsHigh Head Pressure Air-Cooled SystemsTemperature Humidifier Problem AlarmHigh-Water Alarm Loss of PowerOptional/Custom Alarms Change FilterSystem Testing Maintenance and Component Operation Refrigeration System Suction PressureDischarge Pressure Thermostatic Expansion ValveRegulating Valves Water/Glycol Condensing Units Glycol Solution MaintenanceHot Gas Bypass Optional Replacement Procedures Steam Generating Humidifier Operation Procedures Circuit Board Adjustments Humidifier control board DIP switch settingsReplacing the Humidifier Canister AmpsMaintenance Inspection Checklist Troubleshooting Symptom Possible Cause Check or Remedy Cooling cycle too ShortDisplay freezes Control padsTroubleshooting Troubleshooting Troubleshooting Page Net ItiTin That