Liebert 50 & 60Hz, 8 Tons user manual Standard Product Features

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Product Features

1.0PRODUCT FEATURES

1.1Standard Product Features

The Mini-Mate2 is a temperature/humidity control system designed to be installed above a ceiling grid system. The unit is available as a split system evaporator to be matched with an Indoor Centrif- ugal Fan Condensing Unit, Outdoor Prop Fan Condensing Unit, or Indoor Water/Glycol Condensing Unit. A self-contained Chilled Water Fan Coil is also available.

1.1.1Controls

The Mini-Mate2 system includes a wall-mounted display panel with a liquid crystal display (LCD) screen and a 7 membrane keypad. The control is menu-driven for ease of use. Figure 24, Section 3, depicts the complete menu tree for the control. All control setpoints and alarm setpoints are program- mable.

1.1.2Evaporator System Components DX Evaporator Section

The evaporator section includes the evaporator coil, thermostatic expansion valves, filter dryers, and blower. The evaporator coil is constructed of copper tubes and aluminum fins and is designed for the high sensible heat ratio required for electronic equipment. Room air circulation is accomplished by a double inlet, belt driven centrifugal blower that has been dynamically balanced. The blower has self- aligning bearings. Both the blower and motor have permanently lubricated ball bearings.

Chilled-Water Model

The Chilled-Water model is self-contained and is designed for use with an existing chilled-water loop. It contains a chilled-water coil and a proportional modulating valve to control the flow of chilled water.

1.1.3Condensing Unit Components

The condensing unit is connected to the evaporator unit by four refrigerant lines and low voltage con- trol wires. The condensing unit requires a power source and a power disconnect switch. A single point power kit is available for close coupled (attached) units.

Air-Cooled Condensing Unit (Indoor Centrifugal)

The Air-Cooled Condensing units (MC models) include: 3-ton and 5-ton scroll compressors with motor, belt-driven centrifugal blower, crankcase heaters, high pressure switches, condenser coils, and Lee- Temp head pressure control with receivers.

Air-Cooled Condensing Unit (Outdoor Prop Fan)

Outdoor Air-Cooled Condensing Units (PFC models) include: 3-ton and 5-ton scroll compressors with crankcase heaters, high-pressure switch, condenser coils, direct-driven propeller fan, and Lee-Temp head pressure control with receivers.

Water/Glycol Condensing Unit (Indoor)

The Water/Glycol-Cooled Condensing units include: 3-ton and 5-ton scroll compressors with crank- case heaters, high pressure switches, coaxial condensers, and regulating valves. Drycooler and pumps are selected separately for glycol systems.

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Contents Liebert Mini-Mate2 Page Table of Contents System Performance Microprocessor Controls Microprocessor ControlSystem OPERATION, TESTING, and Maintenance AlarmsFigures Table iv Heat rejection matchup 50 Hz Table iii Heat rejection matchup 60 HzPage Standard Product Features Optional Equipment Ancillary Ship Loose Accessories Input Voltage Entering Fluid Temperature Min Installation ConsiderationsRoom Preparation Application limits, evaporator and chilled-water unitsLocation Considerations Drycooler Evaporator System Weights Unit weightsEquipment Inspection upon receipt Installing the Evaporator or Chilled-Water Units NylockLocking nut Hex nut Nut Clamps are for shipping purposes only Close Coupled InstallationsConnections for Ducted Systems Evaporator Air Distribution Filter BoxEvaporator external static pressure 60 at 3750 CFM 6371 CMH Hp Motor std Hp Motor opt Turns External OpenPiping Connections and Coolant Requirements Drain Line Drain installationHumidifier Water Supply Line Condensate PumpChilled-Water Piping-Chilled-water Systems Only General arrangement diagram chilled-water systemsRefrigerant R-22 Piping Recommended refrigerant line sizesEquivalent Suction Feet Circuit Liquid Line Quick Connect Fittings Total refrigerant = Units and LinesTon unit refrigerant charge Line charges field pipingOptional Filter BOX Electrical Connections, Evaporator or Chilled-Water Unit Power ConnectionsFront of Unit Evaporator unit electrical connectionsDucting General ConsiderationsConsiderations for Specific Applications Piping Connections Electrical Connections Condensing UnitControl Connections DPN000248Rev1 Heat rejection connection. Field Electrical Connections Outdoor Air-Cooled Condensing Unit InstallationHigh voltage Electric service connectionLow voltage Earth ground connectionFootprint Dimensions 11-1/2 152292 Water/Glycol Piping Considerations Condensing Unit Fluid RequirementsRegulating Valve Indoor water/glycol condensing unit dimensional data Site Preparation and Installation Two circuits provided. Single circuit shown Optional free cooling coil 3-way valve on water/glycol units Optional Equipment PipingOptional free cooling coil 3-way valve on air-cooled units Checklist for Completed Installation Wall box Feature OverviewMain Menu Menu Alarm History Active AlarmsDefault setpoints and allowable ranges SetpointsRestart Time Delay Setup OperationTime Date10.2 C/F Degrees Show DIP SwitchHumidity Control Method Lead CompressorAlarm Enable Change PasswordsSetup functions, default values and allowable ranges Calibrate SensorsCommon Alarm Enable Alarm Time DelayCustom Alarms Alarm default time delaysCustom Text Equipment Options SwitchesLCD Display Contrast Nonvolatile MemoryRun Diagnostics Test OutputsTest Inputs Test Micro TB3-4 Connection to Terminal #4 Wallbox TB3-1 TB3-2 TB3-3 TB4-4 Wall Box DIP SwitchesTB3-3 Connection to Terminal #3 Wallbox TB3-2 Connection to Terminal #2 WallboxControl Type Response Proportional Control CoolingReheat Dehumidification / Humidification Percent Required Load Control FeaturesCommunications Humidification Operation System ActivationCustom Alarms Alarms Definitions and TroubleshootingHigh Head Pressure Air-Cooled SystemsHumidifier Problem Alarm TemperatureHigh-Water Alarm Loss of PowerChange Filter Optional/Custom AlarmsSystem Testing Maintenance and Component Operation Suction Pressure Refrigeration SystemDischarge Pressure Thermostatic Expansion ValveGlycol Solution Maintenance Regulating Valves Water/Glycol Condensing UnitsHot Gas Bypass Optional Replacement Procedures Steam Generating Humidifier Operation Procedures Humidifier control board DIP switch settings Circuit Board AdjustmentsReplacing the Humidifier Canister AmpsMaintenance Inspection Checklist Troubleshooting Short Symptom Possible Cause Check or Remedy Cooling cycle tooDisplay freezes Control padsTroubleshooting Troubleshooting Troubleshooting Page Iti NetTin That