Emerson 3000 installation manual Unit refrigerant charge, R407C Charge, Model Lb kg

Page 65

Split System Models

All split systems require two refrigerant lines (an insulated copper suction line and a copper liquid line) between the evaporator and the condensing unit.

Two possible methods exist for installing the copper suction and liquid lines.

1.Using an optional Sweat Adapter Kit and hard piping between the two units.

2.Using optional pre-charged line sets (for 3-ton models only).

All refrigeration piping should be installed with high temperature brazed joints. Prevailing good refrigeration practices should be employed for piping supports, leak testing, evacuation, dehydration, and charging of the refrigeration circuits. The refrigeration piping should be isolated from the building by the use of vibration isolating supports.

It is important to handle the pre-charged lines for 3-ton units with care so they will not get kinked or damaged. Use tube benders and make all bends before making connections to either end. Coil any excess tubing in a horizontal plane with the slope of the tubing toward the condensing unit.

To prevent tube damage when sealing openings in walls and to reduce vibration transmission, use a soft flexible material to pack around the tubes.

When installing remote condensing units mounted above the evaporator, the suction gas line should be trapped at the evaporator. This trap will retain refrigerant oil in the Off cycle. When the unit starts, oil in the trap is carried up the vertical riser and returns to the compressor.

Refrigerant charge requirements: Total refrigerant charge will be required only if units are evacuated during installation or maintenance. Total refrigerant charge = evaporator + lines + condensing unit.

NOTE

All condensing units and 3-ton evaporator units are fully charged with refrigerant. All 5 ton evaporator units include a nitrogen holding charge only. See Table 21 for field charge required. If field-supplied refrigerant piping is installed, refrigerant must be added to the system.

Once all piping is complete, check for leaks and dehydrate the field piping as follows:

1.Pressurize the field piping to 150 PSIG (1034 kPa) using dry nitrogen with a trace of refrigerant. Check system for leaks with a suitable leak detector.

2.After completion of leak testing, release the test pressure (per local code) and pull a deep vacuum on the field piping with a suitable pump.

3.After 15 minutes, check the pressure readings and, if they have not changed, break vacuum with dry nitrogen. Pull a second vacuum to 250 microns or less. Recheck the pressure after 15 minutes.

Table 21 Unit refrigerant charge

 

R407C Charge

Model

 

lb (kg)

 

 

 

BF/BU 036E

0.5

(0.2)

 

 

 

BF/BU 035E

0.5

(0.2)

 

 

 

BF/BU 060E

0.8

(0.4)

 

 

 

BF/BU 059E

0.8

(0.4)

 

 

MC_40/39A

12.9 (5.8)

 

 

 

MC_65/64A

26.1

(11.8)

 

 

PF_042A-_L

12.9 (5.8)

 

 

PF_041A-_L

12.9 (5.8)

 

 

 

PF_Z42A-_L

25.8

(11.7)

 

 

 

PF_Z41A-_L

25.8

(11.7)

 

 

 

 

R407C Charge

Model

 

lb (kg)

 

 

 

PF_042A-_H

25.8

(11.7)

 

 

 

PF_041A-_H

25.8

(11.7)

 

 

 

PF_067A-_L

25.8

(11.7)

 

 

 

PF_066A-_L

25.8

(11.7)

 

 

 

PF_Z67A-_L

50.1

(22.7)

 

 

 

PF_Z66A-_L

50.1

(22.7)

 

 

 

PF_067A-_H

50.1

(22.7)

 

 

 

PF_066A-_H

50.1

(22.7)

 

 

 

MC_44/43W

3.4

(1.5)

 

 

 

MC_69/68W

5.9

(2.7)

 

 

 

59

Liebert® Challenger 3000™

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Page 64 Page 66
Contents Liebert Challenger 3000 with Liebert iCOM Page Table of Contents Split System Models Chilled Water ModelsR407C Refrigerant FiguresTables Important Safety Instructions Liebert Challenger Important Safety Instructions 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 connection size Piping ConsiderationsDrain Line Chilled Water Unit Connection Sizes-in Piping connections for air-cooled units Downflow modelsPiping 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 Downflow Models with Liebert iCOM Upflow Models with Liebert iCOMBalancing the Air Distribution Plenum InstallationUnder-Floor Discharge Systems Ducted ApplicationsChecklist for Completed Installation Low Voltage Condenser LocationLine Voltage Air-cooled condenser statistics Common to all models. See below for key to a dimensionLiebert 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 Variable Fan Speed Charging Fan speed suction pressure transducer settingsDPN000349 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 Water Regulating Valve AdjustmentMotorized Ball Valve-Digital Scroll Compressors Refrigerant control settings psi kPaManual Flushing ControlStartup Control MethodLocation Manual ControlPump and Drycooler Drycooler InstallationDrycooler Location 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 FillingEthylene glycol concentrations Glycol SolutionsFilling the System 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 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 Water/Glycol-Cooled Condensing Units Air-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 Outdoor Air-Cooled Condensing Units Unit Dimensions See TablePFCZ42A-L PFCZ41A-L See Table Outdoor air-cooled condensing unit-top air discharge models152 Piping and electrical connections top air discharge36-1/4 38-1/2 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 UnitsTon Connection Sizes Condenser Water RequirementsTon water/glycol-cooled condensing unit Glycol SystemsDPN000209 Ton water/glycol-cooled condensing unit dimensional data WATER/GLYCOL R407C Refrigerant Temperature Gauge Pressure Psig KPaExample Temperature Pressure Gauge Psig KPaCalculating Subcooling Page Ppor t Is t Ne tTwor k Care
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