Emerson 3000 installation manual Variable Fan Speed Control Materials Supplied

Page 33

Air-Cooled Models—Self-Contained Compressor

Variable Fan Speed Control Materials Supplied

•Built-in, pre-wired condenser control box

•Air-Cooled condenser

•Piping access cover to be reinstalled when piping is complete

•Bolts—four per leg (3/8" x 5/8")

•Terminal block for two-wire, 24V interlock connection between unit and condenser

•Condenser legs—four with 1-fan, 2-fan and 3-fan models; six with 4-fan models

Variable Fan Speed Control Leak Check and Evacuation Procedure

Proper leak check and evacuation can be accomplished only with all system solenoid valves open and check valves accounted for.

NOTE

Systems with a scroll or digital scroll compressor include a factory-installed check valve and an additional downstream Schrader valve with core in the compressor discharge line. Proper evacuation of the condenser side of the compressor can be accomplished only using the downstream Schrader valve. See piping schematic (Figures 15 and 16).

1.If unit power is available, open the unit liquid line solenoid valves using the evacuation function in the diagnostic section of the Liebert iCOM control (refer to the Liebert iCOM user manual, SL-18835). If unit power is not available, a field-supplied 24VAC / 75VA power source must be directly connected to each of the unit solenoid valves.

2.For scroll and digital scroll compressors, connect refrigerant gauges to the suction rotalock valves and discharge line Schrader valves (see Note above) on the compressor.

3.Open the service valves and place a 150 PSIG (1034 kPa) of dry nitrogen with a tracer of refrigerant. Check system for leaks with a suitable leak detector.

4.After completion of leak testing, release the test pressure (per local code) and pull an initial deep vacuum on the system with a suitable pump.

5.After four hours, check the pressure readings and, if they have not changed, break vacuum with dry nitrogen. Pull a second and third vacuum to 250 microns or less. Recheck the pressure after two hours. After completing this step, proceed to Variable Fan Speed Charging on page 28.

27

Page 32 Page 34
Image 33
Page 32 Page 34
Contents Liebert Challenger 3000 with iCOM Page Table of Contents Chilled Water Models Split System ModelsR407C Refrigerant Figures Tables Important Safety Instructions Page System Descriptions Prop Fan Air-Cooled Split SystemsCentrifugal Fan Air-Cooled Water-CooledEquipment Inspection Room PreparationLocation Considerations Equipment HandlingHandling With Skid Unit net weightRemoval of Skid Model Lb kgUpflow BU cabinet dimensions Floor Cutout Dimensions Piping Considerations Drain LinePiping connection size Piping Outlet Locations Piping connections for air-cooled units Upflow models Installation Applicable to all Models Installation Applicable to all Models Installation Applicable to all Models Installation Applicable to all Models Installation Applicable to all Models Installation Applicable to all Models Facility Fluid and Piping Maintenance Electrical ConnectionsHumidifier Supply Water-Optional Infrared Terminal Block for customer connections Downflow Models with Liebert iCOM Upflow Models with Liebert iCOMBalancing the Air Distribution Plenum InstallationUnder-Floor Discharge Systems Ducted ApplicationsChecklist for Completed Installation Condenser Location Line VoltageLow Voltage Air-cooled condenser statistics Recommended line sizes OD copper inches Refrigerant PipingVariable Fan Speed Control Piping Fan Speed Control SystemsEquivalent lengths feet for various pipe fittings Indoor unit refrigerant charge lb kgVariable Fan Speed Control Materials Supplied Variable Fan Speed Charging Fan speed suction pressure transducer settingsFactory Piping Field Piping Factory Piping Lee-Temp Leak Check and Evacuation Procedure Liebert Lee-Temp PipingLiebert Lee-Temp Controlled Materials Supplied Lee-Temp Charging Lee-Temp suction pressure transducer settingsLee-Temp Receiver Refrigerant Level 407CFactory Piping Optional Piping Pressure Relief Condenser Factory Piping Field Piping Factory Piping Field Piping Water Regulating Valve AdjustmentMotorized Ball Valve-Digital Scroll Compressors Refrigerant control settings psi kPaManual Flushing ControlStartup LocationManual Control Drycooler Installation Drycooler LocationPump and Drycooler General Guidelines Glycol PipingDry Bulb Wet Bulb Relative Dew Point Humidity Room dew point temperaturesFilling Instructions Volume in standard Type L copper pipingExpansion Tanks, Fluid Relief Valves and Other Devices Preparing the System for FillingGlycol Solutions Filling the System Ethylene glycol concentrations@ 50F 10C 43-3/16 43-9/16 110 5mm For expansion tank dimensions, see onSee Note 30-1/4 483mm 1097mmDrycooler data Mounting hole dimensional dataGlycol pump data Pump Pump Suction Pump Discharge ConnectionField Piping General arrangement-Glycol-cooled models with digital scroll Field Piping Factorypiping Field Piping Testing Valve Function Glycol Regulating ValveMotor Ball Valve-Digital Scroll Compressors Chilled Water Models WAY Valve Water/Glycol-Cooled Condensing Units Air-Cooled Condensing UnitsRefrigerant Loop Unit refrigerant charge Line charges refrigerant per 100 ft m of Type L copper tubeRecommended refrigerant lines R407C sizes OD copper Quick Connect Fittings Line coupling sizesModel Line Size Coupling Torque Tons OD Cu, Lb-ft Outdoor Air-Cooled Condensing Units Unit Dimensions See TablePFCZ42A-L PFCZ41A-L See Table Outdoor air-cooled condensing unit-top air discharge modelsPiping and electrical connections top air discharge 36-1/4 38-1/2152 Ton High Ambient Ton Quiet-Line Field-supplied unit disconnect switchModel Net Weight 60 Hz 50 Hz Lb kg MC40A MC39A Installing the Indoor Condensing UnitCentrifugal Air-Cooled Condensing Units Indoor centrifugal condensing unitAirflow CFM CMH DuctingPiping Connections DPN000207 Wire connections from evaporatorRev0 ModTon centrifugal air-cooled condensing unit dimensional data AIR Cooled Water Cooled Piping Considerations Water and Glycol-Cooled Condensing UnitsCondenser Water Requirements Regulating ValveTon water/glycol-cooled condensing unit Glycol Systems24V GND Ton water/glycol-cooled condensing unit dimensional data WATER/GLYCOL R407C Refrigerant Temperature Gauge Pressure Psig KPaTemperature Pressure Gauge Psig KPa Calculating SubcoolingExample R407C Refrigerant R407C Refrigerant Page Iti Ti n Ne tThat Te r Ys t
Related manuals
Manual 88 pages 63.05 Kb Manual 60 pages 24.1 Kb Manual 32 pages 13.16 Kb Manual 22 pages 3.64 Kb Manual 76 pages 17.32 Kb Manual 184 pages 52.9 Kb

3000 specifications

The Emerson 3000 is a cutting-edge control system designed to enhance the efficiency, reliability, and precision of industrial operations. Employed across various sectors such as oil and gas, pharmaceutical, food and beverage, and power generation, the Emerson 3000 has gained recognition for its robustness and versatility.

One of the main features of the Emerson 3000 is its advanced process control capability. With integrated control algorithms, it can optimize complex processes in real-time, resulting in significant improvements in production rates and reduced operational costs. The system's predictive analytics capabilities enable operators to anticipate equipment failures and maintenance needs, allowing for proactive management and minimizing downtime.

The Emerson 3000 features a modular architecture, providing flexibility for scaling and customization. Operators can easily tailor the system to fit specific application needs, whether it requires additional control loops or integration with other systems. This adaptability is particularly beneficial for facilities planning for future expansions or modifications.

Another technology highlight of the Emerson 3000 is its seamless integration with the latest Internet of Things (IoT) advancements. The system is designed to communicate effectively with a variety of smart devices and sensors, harnessing data to create insightful analytics that drive operational excellence. This connectivity empowers businesses to leverage big data for improved decision-making and increased agility.

Additionally, the Emerson 3000 incorporates state-of-the-art cybersecurity measures to safeguard critical data and operations. With built-in security protocols and regular updates, the system protects against emerging cyber threats, ensuring the integrity of the control network.

User experience is also a focal point of the Emerson 3000. The intuitive graphical user interface presents complex data in a user-friendly format, making it easier for operators to monitor system performance and respond to alerts quickly. This ease of use contributes to enhanced safety and operational efficiency.

In summary, the Emerson 3000 represents a fusion of advanced process control, modular design, IoT connectivity, robust cybersecurity, and user-centric interface, making it an ideal choice for industries seeking to enhance their operational performance while adapting to ever-evolving technological landscapes.
Top Page Image Contents