Emerson 3000 installation manual Refrigerant Piping

Page 32

Air-Cooled Models—Self-Contained Compressor

3.3Refrigerant Piping

All refrigeration piping should be installed with high temperature brazed joints. Prevailing good refrigeration practices should be employed for piping supports, leak testing, dehydration and charging of the refrigeration circuits.

Unit refrigeration components and piping are shipped from the factory with a nitrogen holding charge.

! WARNING

Risk of explosive discharge from high-pressure refrigerant. Can cause injury or death.

This unit contains fluids and gases under high pressure. Relieve pressure before working with piping.

NOTICE

Risk of improper installation. Can cause equipment and property damage.

The refrigeration piping should be isolated from the building by the use of vibration isolating supports.

When installing field piping, care must be taken to protect all refrigerant lines from the atmosphere, especially when using refrigerants with POE oils. Do not allow the piping to stand open to air for more than 15 minutes. Units designed for R407C have a compressor that contains POE oil that is very hygroscopic; that is, it quickly absorbs water from the air. The longer the compressor piping is left open to air, the harder it will be to fully evacuate. If left open too long, the POE oil may need to be replaced before achieving the required vacuum level.

Keep the evaporator unit and condenser closed with their factory charge of dry nitrogen while all field piping is installed. Keep the field piping clean and dry during installation, and do not allow it to stand open to the atmosphere. When all the field interconnecting piping is in place, vent the condenser dry nitrogen charge and connect to the field piping. Finally, vent the evaporator unit dry nitrogen charge and make its piping connections last.

Follow all proper brazing practices including a dry nitrogen purge to maintain system cleanliness.

NOTE

Piping, including inverted trap(s), must be routed to allow unobstructed access to the panel per the NEC.

Traps should be installed in the hot gas line on vertical risers at the base and every 25 feet (7.6m) in elevation. These traps will collect condensed refrigerant and refrigerant oil during the Off cycle of the unit and ensure flow of refrigerant oil during operation.

A check valve is factory-supplied with the unit to be field-installed on the discharge side of the scroll compressor. Be sure to install the check valve with the refrigerant flow in the proper direction. When soldering or brazing the valve, it is very important to protect the internal parts by wrapping the valve with a damp cloth to keep the valve temperature below 250°F (121°C).

Approval is required whenever:

•a refrigerant piping run exceeds 150 ft. (46 m) equivalent length

•an R407C system condenser must be located below the level of the cooling coil.

Total discharge line pressure drop must not exceed 10 PSIG (69 kPa).

Consult your local Emerson® representative when considering installations outside these guidelines.

Liebert® Challenger 3000™

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Contents Liebert Challenger 3000 with Liebert iCOM Page Table of Contents Chilled Water Models Split System ModelsFigures R407C RefrigerantTables Important Safety Instructions Liebert Challenger Important Safety Instructions System Descriptions Split Systems Prop Fan Air-CooledCentrifugal Fan Air-Cooled Water-CooledRoom Preparation Equipment InspectionLocation Considerations Equipment HandlingUnit net weight Handling With SkidRemoval of Skid Model Lb. kgUpflow BU cabinet dimensions Floor Cutout Dimensions Piping connection size Piping ConsiderationsDrain Line Piping connections for air-cooled units Downflow models Chilled Water Unit Connection Sizes-inPiping connections for air-cooled units Upflow models Installation Applicable to all Models Condensate Pump Line 1/2 OD CU used only Installation Applicable to all Models Installation Applicable to all Models Installation Applicable to all Models Installation Applicable to all Models Humidifier Supply Water-Optional Infrared Facility Fluid and Piping MaintenanceElectrical Connections Terminal Block For Customer Connectons Upflow Models with Liebert iCOM Downflow Models with Liebert iCOMPlenum Installation Balancing the Air DistributionUnder-Floor Discharge Systems Ducted ApplicationsChecklist for Completed Installation Low Voltage Condenser LocationLine Voltage Common to all models. See below for key to a dimension Air-cooled condenser statisticsLiebert Lee-Tempheater 43-9/16 51-7/16Refrigerant Piping Condenser refrigerant per serial tag Recommended line sizes OD copper, inchesEquivalent lengths feet for various pipe fittings Variable Fan Speed Control Materials Supplied Fan Speed Control SystemsVariable Fan Speed Control Piping Fan speed suction pressure transducer settings Variable Fan Speed ChargingDPN000349 Rev DPN001726 Liebert Lee-Temp Controlled Materials Supplied Liebert Lee-Temp Leak Check and Evacuation ProcedureLiebert Lee-Temp Piping 407C Liebert Lee-Temp suction pressure transducer settingsLiebert Lee-TempCharging Factory Piping Optional Piping Field Piping DPN001725 Condenser Factory Piping Field Piping Factory Piping Adjustment Water Regulating ValveRefrigerant control settings psi kPa Motorized Ball Valve-Digital Scroll CompressorsManual Flushing ControlControl Method StartupLocation Manual ControlPump and Drycooler Drycooler InstallationDrycooler Location Glycol Piping General GuidelinesRoom dew point temperatures Dry Bulb Wet Bulb Relative Dew Point HumidityVolume in standard Type L copper piping Filling InstructionsExpansion Tanks, Fluid Relief Valves and Other Devices Preparing the System for FillingGlycol Solutions Ethylene glycol concentrationsFilling the System For expansion tank dimensions, see on 43-3/16 43-9/16 110 5mmSee Note 30-1/4 483mm 1097mmMounting hole dimensional data Drycooler dataGlycol pump data Pump Pump Suction Pump Discharge Connection,Field Piping General arrangement-Glycol-cooled models with digital scroll Expansion Tank Field-Installed at Pressure Motor Ball Valve-Digital Scroll Compressors Testing Valve FunctionGlycol Regulating Valve Chilled Water Models WAY Valve Air-Cooled Condensing Units Water/Glycol-Cooled Condensing UnitsRefrigerant Loop Model Lb kg Unit refrigerant chargeR407C Charge Line coupling sizes Line charges refrigerant per 100 ft m of Type L copper tubeRecommended refrigerant lines R407C sizes OD copper Quick Connect Fittings Unit Dimensions See Table Outdoor Air-Cooled Condensing UnitsPFCZ42A-L PFCZ41A-L Outdoor air-cooled condensing unit-top air discharge models See Table152 Piping and electrical connections top air discharge36-1/4 38-1/2 Field-supplied unit disconnect switch Ton High Ambient Ton Quiet-LineInstalling the Indoor Condensing Unit Model Net Weight 60 Hz 50 Hz Lb kg MC40A MC39ACentrifugal Air-Cooled Condensing Units Indoor centrifugal condensing unitDucting Airflow CFM CMHPiping Connections Wire connections from evaporator DPN000207Rev0 ModTon centrifugal air-cooled condensing unit dimensional data AIR Cooled Water Cooled Water and Glycol-Cooled Condensing Units Piping ConsiderationsTon Connection Sizes Condenser Water RequirementsGlycol Systems Ton water/glycol-cooled condensing unitDPN000209 Ton water/glycol-cooled condensing unit dimensional data WATER/GLYCOL Temperature Gauge Pressure Psig KPa R407C RefrigerantExample Temperature Pressure Gauge Psig KPaCalculating Subcooling Page Ne t Ppor t Is tTwor k Care
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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.

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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.
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