Emerson MINI-MATE2 Water/Glycol Piping Considerations, Condensing Unit Fluid Requirements

Page 39

Site Preparation and Installation

5.7Indoor Water- and Glycol-Cooled Condensing Unit Installation

NOTE

Follow all national and local building, electrical and plumbing codes.

5.7.1Location Considerations

The condensing unit may be located above the dropped ceiling or any remote indoor area. If noise is of concern, the condensing unit should be located away from personnel. Normal operating sound may be objectionable if the condensing unit is placed near quiet work areas.

To mount the unit in the ceiling, refer to 5.4 - Installing the Ceiling Units.

5.7.2Electrical Connections

Refer to 5.4.4 - Electrical Connections for general wiring requirements and cautions. Refer to electrical schematic when making connections. Refer to serial tag for full load amp and wire size amp ratings.

Control Connections

A 4-wire control connection is required from the evaporator unit to the condensing unit. Glycol cooled units also require a two-wire control connection to the drycooler and pump package.

5.7.3Piping Connections

Details for refrigerant loop piping are in 5.4.3 - Piping Connections and Coolant Requirements.

Water/Glycol Piping Considerations

Manual service shut-off valves must be installed at the supply and return line to each unit. This enables routine service and/or emergency isolation of the unit. When the condensing unit fluid quality is poor, filters that can be easily serviced should be placed in the supply line. These filters extend the service life of the condensing unit.

Condensing Unit Fluid Requirements

The maximum fluid pressure is 150 PSI standard pressure and 350 PSI for high pressure units (Refer to unit serial tag and model number description page at beginning of this manual).

Automotive antifreeze must not be used in glycol systems. Prepare glycol solution using customary practices.

Regulating Valve

Water/Glycol cooled units include a coolant flow regulating valve that is factory-adjusted and should not need field adjustment.

Standard pressure and high pressure valves are adjusted differently. Contact Emerson’s Precision Cooling Support before making any adjustments.

33

Liebert® Mini-Mate2™

Page 38 Page 40
Image 39
Page 38 Page 40
Contents Liebert Mini-Mate2 Page Table of Contents System Performance Microprocessor Controls Microprocessor ControlSystem OPERATION, Testing and Maintenance AlarmsTables Important Safety Instructions Liebert Mini-Mate2 Air-cooled systems-indoor centrifugal condensing units Product Model InformationPFH 0 67 a a L System configurations-50 Hz System configurations-60 HzIntroduction Chilled Water Units Standard FEATURES-5 TON SystemsEvaporator Section-Split System Condensing Unit Section-Split SystemSystem Controls Other Standard Control FeaturesSensors Switches and MotorsReheat HumidifierOptional Configurations-Prop Fan Condensing Units Optional Configurations-Water/Glycol Condensing UnitsFree-Cooling Optional Configurations-Chilled Water Units SHIP-LOOSE ACCESSORIES-FIELD-INSTALLED Ship-Loose Accessories-Field-Installed Installation Considerations Site Preparation and InstallationRoom Preparation Air-cooled systems Location ConsiderationsCooling Units Ceiling Unit WeightsUnit weights Cooling DrycoolerEvaporator Air Distribution Filter Box Installing the Ceiling UnitsClose Coupled Installations Equipment Inspection Upon ReceiptEvaporator external static pressure Connections for Ducted SystemsPiping Connections and Coolant Requirements Drain Line Humidifier Water Supply LineCopper Pipe Recommended refrigerant line sizesEquivalent lengths for various pipe fittings, ft m Equivalent Pipe Liquid Suction Length, ft mPipe length and condenser elevation relative to evaporator Vertical rise above evaporator/maximumVertical fall below evaporator Line charges refrigerant per 100 ft m of Type L copper tube Total refrigerant = Units and LinesQuick Connect Fittings Refrigerant chargeDPN000218 Electrical Connections Threaded rod and hardware kit installationControl Connections Power ConnectionsEvaporator unit electrical connections Close coupled installation Considerations for Specific Applications Piping ConnectionsDucting General ConsiderationsAIR-COOLED Dimensional Data AIR Cooled AIR-COOLED Outdoor Air-Cooled Condensing Unit Installation Weight, lb kgModel # 60Hz 50Hz Rev Water/Glycol Piping Considerations Condensing Unit Fluid RequirementsRegulating Valve WATER/GLYCOL Dimensional Data WATER/GLYCOL DPN000214 Optional free-cooling coil 3-way valve on water/glycol units Hot Water Reheat CoilChecklist for Completed Installation Microprocessor Control Feature OverviewSetpoints Main Menu MenuDate Active AlarmsStatus Time2 C/F Degrees Setup OperationRestart Time Delay Show DIP SwitchCalibrate Sensors Change PasswordsSetup functions, default values and allowable ranges Function Default RangeAlarm default time delays Alarm EnableAlarm Time Delay Common Alarm EnableLCD Display Contrast Custom AlarmsStandard Custom Alarm Messages Custom TextSwitch settings wall box board Run Diagnostics Available On Rev 1.001.0 and higherEquipment Options Switches Equipment switch settings unit control boardTest Control Board Test OutputsControl menu Wall box board Control board-inside evaporatorTemperature Control Humidity ControlSystem Performance Microprocessor Controls Load Control Features Humidification OperationCommunications High Head Pressure Alarms Definitions and TroubleshootingAlarms Custom AlarmsAir-Cooled Systems TemperatureHumidifier Problem Alarm High Water AlarmOptional/Custom Alarms System Testing Maintenance and Component OperationSystem OPERATION, Testing and Maintenance Refrigeration System Blower SystemAir Distribution Blower RemovalAir-Cooled Condensing Units Glycol Solution MaintenanceDischarge Pressure Thermostatic Expansion ValveHot gas bypass Hot Gas BypassElectrical Failure Replacement ProceduresCompressor Replacement Mechanical FailureReplace a Failed Compressor Steam Generating Humidifier-Operation Procedures Amps Humidifier Circuit Board AdjustmentsHumidifier control board DIP switch settings Replacing the Humidifier CanisterMaintenance Inspection Checklist Troubleshooting TroubleshootingDisplay freezes Symptom Possible Cause Check Or Remedy Cooling cycle tooDisplay Problem ShortCare Ne tPpor t Is t Twor k

MINI-MATE2 specifications

The Emerson MINI-MATE2 is a cutting-edge temperature and pressure monitoring device specifically designed for the needs of the refrigeration and HVAC industries. Known for its reliability and user-friendly interface, this compact unit serves as a key tool for technicians and facility managers looking to optimize system performance while ensuring compliance with safety standards.

One of the main features of the MINI-MATE2 is its advanced digital display, which allows users to easily monitor and interpret temperature and pressure readings in real-time. Its highly responsive sensors ensure accurate data collection, vital for maintaining optimal operating conditions. Moreover, the device supports a wide range of refrigerants, making it versatile for different applications, from walk-in coolers to commercial refrigeration systems.

The MINI-MATE2 utilizes state-of-the-art technology to enhance efficiency and performance. Equipped with Bluetooth connectivity, it allows for wireless communication with mobile devices, enabling technicians to track readings and receive alerts remotely. This feature not only improves convenience but also helps in quick decision-making, ensuring timely interventions when anomalies are detected.

Another significant characteristic is its robust construction. Built to withstand harsh environments, the MINI-MATE2 features a durable casing that protects it from physical impacts and environmental factors. This resilience ensures longevity, making it a cost-effective investment for any facility.

In addition, the MINI-MATE2 is designed with user-friendliness in mind. Its intuitive interface means that even technicians with limited experience can easily navigate its functionalities. Quick setup and straightforward operation allow for rapid adoption and extensive use in a variety of settings.

Finally, the MINI-MATE2 also includes built-in data logging capabilities. Users can record historical data for analysis and reporting purposes, which is essential for performing trend analysis and identifying potential issues before they escalate. By providing a comprehensive overview of system performance, the MINI-MATE2 empowers users to make informed decisions that can lead to improved energy efficiency and reduced operational costs.

Overall, the Emerson MINI-MATE2 is an indispensable tool for modern refrigeration and HVAC applications, combining cutting-edge technology, user-friendly design, and essential features to support efficient system management.
Top Page Image Contents