Liebert ITR installation manual Chilled Water Models

Page 43

Chilled Water Models

6.0CHILLED WATER MODELS

6.1Piping Considerations

Manual shut-off valves should be installed at the supply and return lines to each unit. This will pro- vide for routine service and emergency isolation of the unit.

Consideration of the minimum water temperature to be supplied from the chiller will determine if the need exists to insulate supply and return lines. Insulation will prevent condensation on the supply and return lines.

To provide for the emergency of water leaks and the consequences of sub-floor flooding, floor drains should be provided with wet traps or a water detection system, such as a Liqui-tect, that is installed near the base of the unit or below the elevated floor.

Figure 18 Chilled water general arrangement - horizontal flow (BR)

			Air
			Flow
			Bleed
			Valve
Chilled
Water
Supply			Chilled
			Chilled
Chilled	Valve		Water
Chilled	Valve		Coil
Water	Actuator		3-WAY VALVE
Return			3-WAY VALVE
Shutoff	AB	A	3-Way
Shutoff	AB	Chilled
Valves*		Water
	B	Valve
	Flow
	Switch		Air
	(optional)		Flow
Hose			Bleed
Hose			Valve
Bibs*	Valve		Valve
Chilled	Valve
Chilled	Actuator
Water	Actuator
Water
Supply
Chilled	2-Way		Chilled
Water	Chilled		Chilled
Water	Chilled		Water
Return	Water		Water
Return	Water		Coil
	Valve		Coil
	Valve
Shutoff			2-WAY VALVE
Shutoff
Valves*

Hose Bibs*

SINGLE CIRCUIT SHOWN

FACTORY PIPING

FIELD PIPING

*Components are not supplied by Emerson but are recommended for proper circuit operation and maintenance.

SL-11899 Pg. 5

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Image 43

Contents

Liebert Challenger ITR Page Table of Contents Split System Models Chilled Water ModelsR407C Refrigerant Figures Tables System Descriptions Location Considerations Remote Sensor Installation LocationRoom Preparation Equipment InspectionDomestic Export Model Lb kg 50Hz Models 60Hz Models Unit shipping weightsHandling With Skid Removal of SkidUnit Weight Cabinet dimensionsSL-11897 Drain Line Piping ConsiderationsPiping connection size Piping Outlet Locations Piping connections for split system fan coil units Piping connections for water/glycol and Glycool units Piping connections for chilled water self-contained units Electrical connections Electrical ConnectionsBalancing the Air Distribution Plenum InstallationDucted Applications Checklist for Completed Installation Lee-Temp/Flood Back Head Pressure Control Condensers Condenser LocationLine Voltage Low VoltageAir-cooled condenser statistics Equivalent Length Hot Gas Line Liquid Line Refrigerant PipingRecommended line sizes OD copper inches 23 & 33 kW 067A 065ACondenser refrigerant per serial tag Fan Speed Control SystemsMaterials Supplied Equivalent lengths feet for various pipe fittingsDehydration/Leak Test Single Circuit Shown Piping Refrigerant control settings psi kPaLee-Temp/Flood Back Head Pressure Control Systems ChargingMaterials Supplied Low Pressure Cut Out High Pressure Cut Out 360 Single Circuit Shown Condenser Water-cooled general arrangement Water Regulating Valve Manual Flushing Water Regulating Valve AdjustmentTesting Valve Function Water Regulating ValveDrycooler Location Drycooler InstallationPump and Drycooler Dry Bulb Wet Bulb Relative Dew Point Humidity Room dew point temperaturesGlycol Piping Expansion Tanks, Fluid Relief Valves and Other DevicesPreparing the System for Filling Indoor unit glycol volume approximate gallons liters maxVolume in standard Type L copper piping Filling InstructionsEthylene glycol concentrations Glycol Solutions@ 50F 10C Filling the System 483mm 43-3/16 1097mm For expansion tank dimensions, see on43-9/16 110 5mm See Note 30-1/4 Pump Pump Suction Pump Discharge Connection Mounting hole dimensional data Drycooler data Glycol pump dataGlycol general arrangement Glycool general arrangement Glycol Regulating Valve Glycol Regulating Valve AdjustmentChilled Water Models Water/Glycol-Cooled Condensing Units Air-Cooled Condensing UnitsRefrigerant Loop Recommended refrigerant lines R22 or R407C sizes OD copper Unit refrigerant chargeLine coupling sizes Evaporator Condensing Unit EvaporatorQuick Connect Fittings Outdoor Air-Cooled Condensing Units Unit Dimensions See TablePFH067A-L See Table Outdoor air-cooled condensing unit-top air discharge models36-1/4 38-1/2 Piping and electrical connections top air discharge152 SL-11081 PG 8A Electrical field connections, prop fan condensing moduleIndoor centrifugal condensing unit Installing the Indoor Condensing UnitModel Net Weight 60 Hz 50 Hz Lb kg MC65A MC64A Centrifugal Air-Cooled Condensing UnitsAirflow CFM CMH DuctingCentrifugal air-cooled condensing unit dimensional data AIR Cooled Water Cooled Condenser Water Requirements Regulating Valve Adjustment and TestingWater and Glycol-Cooled Condensing Units Piping ConsiderationsWater/glycol-cooled condensing unit dimensions WATER/GLYCOL R407C Refrigerant Temperature Gauge Pressure Psig KPaCalculating Subcooling Temperature Pressure Gauge Psig KPaExample That Ne tIti Ti n