Liebert ITR installation manual Single Circuit Shown

Page 29

Air-Cooled Models

Figure 11 Air-cooled, Lee-Temp general arrangement

Inverted Trap * on discharge line to extend abovebase of coil by a minimum of 71/2" (190mm)

Condenser Coil

Piping Assembly* *

Check Valve

Rotalock Valve **

Traps * Every 25 Ft. (7.6m) of rise on Hot Gas Line only

Head Pressure

Control with

Integral Check

Valve

Lee-Temp

Receiver

Liquid Return from Condenser

Expansion Valve Hot Gas

Bypass

Valve

1/4" ( 6.4mm)

Pressure Relief Valve * *

Sight Glass

Evaporator Coil

Solenoid Valves

Sensing Bulb

Shutoff	Sight Glass
Valve *

Filter Drier

Liquid Return

Service

Valves

Hot Gas

Bypass

External Equalizers

Scroll Compressor

Check Valve* *

Hot Gas Discharge

SL-10061 PG 4 SL-10071 PG 4

SINGLE CIRCUIT SHOWN

FACTORY PIPING

OPTIONAL PIPING

FIELD PIPING

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

** Components supplied by Liebert

and mustbe field installed.

23

Image 29

Contents

Liebert Challenger ITR Page Table of Contents R407C Refrigerant Chilled Water ModelsSplit System Models Figures Tables System Descriptions Room Preparation Remote Sensor Installation LocationEquipment Inspection Location ConsiderationsHandling With Skid Unit shipping weightsRemoval of Skid Domestic Export Model Lb kg 50Hz Models 60Hz ModelsUnit Weight Cabinet dimensionsSL-11897 Piping connection size Piping ConsiderationsDrain Line 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 ConnectionsDucted Applications Plenum InstallationBalancing the Air Distribution Checklist for Completed Installation Line Voltage Condenser LocationLow Voltage Lee-Temp/Flood Back Head Pressure Control CondensersAir-cooled condenser statistics Recommended line sizes OD copper inches Refrigerant Piping23 & 33 kW 067A 065A Equivalent Length Hot Gas Line Liquid LineMaterials Supplied Fan Speed Control SystemsEquivalent lengths feet for various pipe fittings Condenser refrigerant per serial tagDehydration/Leak Test Single Circuit Shown Lee-Temp/Flood Back Head Pressure Control Systems Refrigerant control settings psi kPaCharging PipingMaterials Supplied Low Pressure Cut Out High Pressure Cut Out 360 Single Circuit Shown Condenser Water-cooled general arrangement Testing Valve Function Water Regulating Valve AdjustmentWater Regulating Valve Water Regulating Valve Manual FlushingPump and Drycooler Drycooler InstallationDrycooler Location Glycol Piping Room dew point temperaturesExpansion Tanks, Fluid Relief Valves and Other Devices Dry Bulb Wet Bulb Relative Dew Point HumidityVolume in standard Type L copper piping Indoor unit glycol volume approximate gallons liters maxFilling Instructions Preparing the System for Filling@ 50F 10C Glycol SolutionsEthylene glycol concentrations Filling the System 43-9/16 110 5mm For expansion tank dimensions, see onSee Note 30-1/4 483mm 43-3/16 1097mmDrycooler data Mounting hole dimensional dataGlycol pump data Pump Pump Suction Pump Discharge ConnectionGlycol general arrangement Glycool general arrangement Glycol Regulating Valve Glycol Regulating Valve AdjustmentChilled Water Models Water/Glycol-Cooled Condensing Units Air-Cooled Condensing UnitsRefrigerant Loop Line coupling sizes Unit refrigerant chargeRecommended refrigerant lines R22 or R407C sizes OD copper 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 models152 Piping and electrical connections top air discharge36-1/4 38-1/2 SL-11081 PG 8A Electrical field connections, prop fan condensing moduleModel Net Weight 60 Hz 50 Hz Lb kg MC65A MC64A Installing the Indoor Condensing UnitCentrifugal Air-Cooled Condensing Units Indoor centrifugal condensing unitAirflow CFM CMH DuctingCentrifugal air-cooled condensing unit dimensional data AIR Cooled Water Cooled Water and Glycol-Cooled Condensing Units Regulating Valve Adjustment and TestingPiping Considerations Condenser Water RequirementsWater/glycol-cooled condensing unit dimensions WATER/GLYCOL R407C Refrigerant Temperature Gauge Pressure Psig KPaExample Temperature Pressure Gauge Psig KPaCalculating Subcooling Iti Ne tTi n That