Liebert 3000 Water and Glycol Cooled Condensing Units, Piping Considerations, Regulating Valve

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Split System Models

7.6Water and Glycol Cooled Condensing Units

For installation guidelines, refer to Installing the Indoor Condensing Unit on page 52.

7.6.1Piping Considerations

It is recommended that manual service shut-off valves be installed at the supply and return line to each unit. This will provide for routine service or emergency isolation of the unit.

When the water source for the condenser is of poor quality, it is good practice to provide cleanable fil- ters in the supply line. These filters will trap the particles in the water supply and extend the service life of the water cooled condenser.

3-Ton Connection Sizes

Condenser Water Inlet

7/8" OD Cu

Condenser Water Outlet

7/8" OD Cu

Suction Line

1-1/8 - 12 male #11 quick connect

Liquid Line:

5/8 - 18 male #6 quick connect

5-Ton Connection Sizes

Condenser Water Inlet

1-1/8" OD Cu

Condenser Water Outlet

1-1/8" OD Cu

Suction Line

1-7/16" - 16 male #12 quick connect

Liquid Line

1-1/16" - 12 male #10 quick connect

Table 32 Water and glycol cooled condensing unit data

 

Net Weight

Glycol Volume

Model

 

 

 

 

lbs

kg

gal

liters

 

 

 

 

 

MC_44W

190

86

1.2

4.5

MC_43W

 

 

 

 

MC_69W

282

128

2.0

7.6

MC_68W

 

 

 

 

7.6.2Condenser Water Requirements

The standard maximum water pressure is 150 psig (1034 kPa). For applications above this pressure, consult the factory about high pressure systems.

The system will operate in conjunction with a cooling tower, city water, or drycooler.

7.6.3Regulating Valve

For details, refer to sections 4.3.1 - Standard Valve - 150psig (1034kPa) System for 3 & 5 Ton

Units (Johnson Controls Valve) High Pressure Valve - 350psig (2413kPa) System for 5 Ton Units (Johnson Controls Valve), 4.3.2 - High Pressure Valve - 350 psig (2413 kPa) System for 3 Ton Units (Metrex Valve), and 4.3.3 - Testing Valve Function.

7.6.4Glycol Systems

For split system glycol systems, use drycooler and pump data found in 5.0 - Glycol/GLYCOOL Cooled Models. See Table 18 - Drycooler data.

Electrical control interconnect to drycooler is wired from water/glycol condensing unit.

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Contents Liebert Challenger Page Table of Contents Chilled Water Models Split System ModelsR407C Refrigerant Figures Tables System Descriptions Location Considerations Room PreparationEquipment Inspection Equipment HandlingUnit net weight Removal of SkidModel Lbs kg Rear return configuration Front return configurationFloor Cutout Dimensions Piping Considerations Drain LinePiping connection size Hot GasRefrigerant Line Condensate Pump Line HumidifierWater SupplyLineSuction Refrigerant Line Condensate DrainHotWater Return Condenser SupplyLineCondenser Return Line HumidifierWater SupplyLine Hot Water SupplyPiping connections for chilled water self-contained units Installation Electrical Connections Electrical connectionsHz Units 550 600 Model Balancing the Air DistributionUnder-Floor Discharge Systems Ton Hz Units 550 600 ModelChecklist for Completed Installation Plenum InstallationDucted Applications Installation Low Voltage Condenser LocationLine Voltage Lee-Temp/Flood Back Head Pressure Control CondensersAir cooled condenser statistics Refrigerant Piping Recommended line sizes OD copper inchesEquivalent lengths feet for various pipe fittings Fan Speed Control SystemsMaterials Supplied Condenser refrigerant per serial tagDehydration/Leak Test Single Circuit Shown Charging Refrigerant control settings psi kPaLee-Temp/Flood Back Head Pressure Control Systems PipingMaterials Supplied Low Pressure Cut Out High Pressure Cut Out 360 Single Circuit Shown Condenser Water cooled general arrangement Adjustment Water Regulating ValveManual Flushing Testing Valve Function Adjusting collar nutDrycooler Installation Drycooler LocationPump and Drycooler Room dew point temperatures Glycol PipingDry Bulb Wet Bulb Relative Dew Point Humidity Expansion Tanks, Fluid Relief Valves and Other Devices Volume in standard Type L copper pipingFilling Instructions Preparing the System for FillingGlycol Solutions Ethylene glycol concentrations@ 50F 10C Filling the System See Note 30-1/4 For expansion tank dimensions, see on43-3/16 43-9/16 110 5mm 1095mm 483mm 1097mmGlycol pump data Mounting hole dimensional dataDrycooler data Pump Pump Suction Pump Discharge ConnectionFactory Glycool general arrangement Glycol Regulating Valve Chilled Water Models WAY Valve Air Cooled Condensing Units Water/Glycol Cooled Condensing UnitsRefrigerant Loop Unit refrigerant charge Recommended refrigerant lines R22 or R407C sizes OD copperLine coupling sizes Refrigerant piping diagram 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 TablePiping and electrical connections top air discharge 36-1/4 38-1/2152 SL-11081 PG 8A Discharge ModelsCentrifugal Air Cooled Condensing Units Installing the Indoor Condensing UnitModel Net Weight 60 Hz 50 Hz Lbs kg Indoor centrifugal condensing unitDetail of ceiling hanging bracket Ducting Airflow CFM CMHTon Dimensional Data Piping Connections DPN000207Rev0 Ton centrifugal air cooled condensing unitTon centrifugal air cooled condensing unit dimensional data DPN000226Rev0 Water Cooled Condenser Water Requirements Water and Glycol Cooled Condensing UnitsPiping Considerations Regulating ValvePiping Connections DPN000209Rev0 Ton water/glycol cooled condensing unit dimensional data DPN000228Rev0 Temperature Gauge Pressure Psig KPa R407C RefrigerantTemperature Pressure Gauge Psig KPa Calculating SubcoolingExample R407C Refrigerant R407C Refrigerant Page Tin NetIti That
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3000 specifications

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