Emerson ITR manual Self-Contained Systems, Split Systems

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Refrigeration Systems

6.0REFRIGERATION SYSTEMS

Two versions are available:

Self-Contained Systems

Split Systems

6.1Self-Contained Systems

These systems feature a scroll compressor and controls, expansion valve, hot gas bypass and evapora- tor coil in the room unit.

Air-Cooledmodels also include a crankcase heater on the compressor and require field connection to remote air-cooled condenser.

Water, Glycol and GLYCOOL models also include a coaxial condenser with field connections required to the water or glycol coolant loop.

Water/Glycol models have two-way WRV with bypass. GLYCOOL models have three-way WRV.

6.2Split Systems

These systems feature the evaporator coil and expansion valve in the room unit, with the scroll com- pressor, and the condensing equipment located in one of several different types of pre-charged con- densing units.

6.3Refrigeration System Components—Standard Features

6.3.1Compressor

The heart of the refrigeration system is the compressor.

All self-contained evaporator units and split system condensing units contain a high efficiency, quiet operating scroll compressor. The compressors have internal vibration isolating mountings, pressure safety controls and built-in overload protection.

6.3.2Evaporator Coil

The evaporator coil is designed for the high sensible heat ratio required by electronic equipment applications. The copper tube, aluminum fin coils are configured in a V-frame for smooth air flow through the unit.

6.3.3Safety Control

Every Liebert Challenger compressor has a high-pressure switch with an exclusive manual reset after high pressure cut-out. This prevents cycling the compressor at high pressure, resulting in greater effi- ciency and longer compressor life.

6.3.4Expansion Valve

The externally equalized thermostatic expansion valve smoothly controls the flow of refrigerant through the coil and provides precise control of superheat.

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Contents Liebert Challenger ITR Split system configurations Table iii Self-contained system configurationsTable i Product model information Table of Contents Refrigeration Systems AIR-COOLEDSYSTEM-STANDARD and Optional FeaturesGlycool SYSTEMS-STANDARD and Optional Features Optional EQUIPMENT-ALLSYSTEMSComprehensive Monitoring SOLUTIONS-OPTIONAL System Data Dimensional Drawings Electrical DataComprehensive Monitoring SYSTEMS-OPTIONAL Figures Page Page Humidity Control Temperature ControlAir Volume Air FiltrationMultiple Configurations to Fit a Variety of Spaces Liebert Challenger ITREfficiency in Economic Terms Unit configurations Image is Illustrative only Control Type DiagnosticsControl Internal System ControlLogging AlarmsCustom Alarm Maximum of Four Graphical Displays-Advanced Graphic Control OnlyFan Section Cabinet and FrameElectrical Panel Infrared HumidifierCondensate Pump Remote Temperature/ Humidity SensorsDisconnect Switch-Locking Type Condensate pump capacityChilled Water System-Standard Features Chilled Water System-Optional FeaturesRefrigeration System Components-Standard Features Self-Contained SystemsSplit Systems Air-Cooled, Self-Contained Systems-Standard Features Air-Cooled, Self-Contained Systems-Optional FeaturesCentrifugal Fan, Condensing Unit Air-Cooled Split Systems-Standard FeaturesAir-Cooled Split Systems-Optional Features Propeller Fan Condensing UnitWater/Glycol Self-Contained Systems-Standard Features Water/Glycol Split System-Standard FeaturesWater/Glycol-Cooled, Split System-Optional Features Factory Installed Non-Fused Disconnect SwitchGlycol Pump Glycool System-Standard Features GLYCOOL-Self-Contained Models OnlyQuiet-Line Drycoolers Glycol and GLYCOOL-Cooled-Optional EquipmentDrycooler Evaporator Coil Econ-O-Coil Three-way Glycool Control ValveSteam generating humidifier Adjustable Floor Stand Steam Generating HumidifierHigh External Static Blowers SCR ReheatHigh-Efficiency Filter High-Efficiency MotorsHot Water Reheat Smoke DetectorFirestat FirestatStand-Alone Monitoring and Leak Detection Solutions Enterprise Monitoring SystemsNetwork Monitoring Systems Leak Detection Modules Discrete Output Interface CardLiebert Nform Liebert SiteScan WebLiebert SiteLink Environmental Discrete Outputs CardTemperature and Humidity Recorder Universal MonitorLeak Detection Liebert Challenger ITR air-cooled data-60 Hz BR 067A BR 060EInfrared Humidifier Standard Fan Data Blower A12x9AT Liebert Challenger ITR air-cooled data-50 HzSystem Type Split Systems Evaporator Coil V-Frame, at Standard ConditionsLiebert Challenger ITR air-cooled data-50Hz Connection Sizes Challenger ITR UnitCondenser Air 35C 95F Ambient Liebert Challenger ITR water cooled data, 60 Hz System Type Self-Contained Split SystemsIndoor Unit BR 071WG BR 060E Net Capacity Data Water Regulating Valve Water Requirements Coaxial CondenserConnection Sizes Remote Condensing Unit Liebert Challenger ITR water cooled data, 50 Hz BTU/HCapacity, kg/hr lb/hr Liebert Challenger ITR glycol cooled data, 60 Hz GlycoolIndoor Unit Steam Generating Humidifier OptionalLiebert Challenger ITR glycol cooled data, 50 Hz GlycoolGlycol Pump 3-Phase kW hp System Type Glycol CooledDrycooler 35C 95F Ambient Liebert Challenger ITR chilled water data, 60 Hz Indoor Unit BR 102C Fan Data Blower A12x9ATLiebert Challenger ITR chilled water data, 50 Hz Indoor Unit BR 101CDimensional Drawings 50 Hz 60 Hz Unit Weight Models Lb. kgOptional Floor Stand Model Net Weight 60 Hz 50 Hz Lbs kg MC69W MC68W SL-11081 36-1/4Liebert Lee-Temp Receiver = 40 1016mm = 7-1/2 190mm Electrical Data Liebert Challenger ITR electrical data1-60 HzMotor Hp 2.2 kW Self-contained with SCR reheatMotor Hp 1.5 kW Electric Reheat Only Motor Hp 1.1 kWVoltage 208 230 460 575 60 Hz Scroll Compressor Scroll compressor and main fan for comparison purposes onlyOutdoor condensing units Main Fan Motor Hp 1.1 kWOutdoor condensing units-Quiet-Line Indoor condensing units, air-cooledIndoor condensing units, water-cooled Drycooler and pump package 95F 35C ambient Fan speed control condensersLiebert Lee-Temp condensers Voltage 208/230 460 575 GlycolLiebert Challenger ITR electrical data-50 Hz Scroll compressor and main fan for comparison only Indoor condensing units air-cooled Indoor condensing units water-cooledDrycooler only 35C 95F ambient, three-phase Drycooler only 35C 95F ambient, single phasePumps Submittals SummaryDesign Requirements All SystemsAdvanced Microprocessor Control Standard Common Alarm AlarmsAudible Alarm DiagnosticsAdvanced Microprocessor Control with Graphics Optional CommunicationsAlarms Electric Reheat Standard Infrared Humidifier StandardSteam Generating Humidifier Optional Hot Water Reheat OptionalDirect Expansion Self-Contained Systems Centrifugal Fan Condenser Optional Fan Speed Control FSC Head Pressure Control StandardLiebert Lee-Temp Head Pressure Control Optional Two-way Water Regulating Valve with Bypass StandardOutdoor Unit Glycool Self-Contained SystemsOptional Disconnect Direct Expansion Split SystemsCentrifugal Fan Condensing Unit Ton ModelsOptional High Ambient Models Water or Glycol-Cooled Split SystemsOptional Quiet-Line Models Water or Glycol-Cooled Condensing UnitThree-way Chilled Water Valve Standard Flow Switch OptionalChilled Water Self-Contained Systems Chilled Water Coil Two-way Chilled Water Valve OptionalComprehensive Monitoring Solutions Installation of Environmental Control UnitsField Quality Control Page Ti n Ne tIti That