Emerson Liebert Challenger 3000 Installation Manual

Emerson Liebert Challenger 3000 Installation Manual

Environmental control systems
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Liebert Challenger
Installation Manual - 3 & 5 Tons, 50 & 60Hz
3000 with iCOM
Precision Cooling
For Business-Critical Continuity™

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  Summary of Contents for Emerson Liebert Challenger 3000

  • Page 1 Precision Cooling For Business-Critical Continuity™ Liebert Challenger 3000 with iCOM ™ Installation Manual - 3 & 5 Tons, 50 & 60Hz...
  • Page 3: Table Of Contents

    TABLE OF CONTENTS ..........1 MPORTANT AFETY NSTRUCTIONS...
  • Page 4 /GLYCOOL-C —S ... . 41 LYCOL OOLED ODELS ONTAINED OMPRESSOR Drycooler Location ............41 Drycooler Installation .
  • Page 5 FIGURES Figure 1 Removing Challenger from skid ........... . . 6 Figure 2 Upflow (BU) cabinet dimensions .
  • Page 6 TABLES Table 1 Unit net weight ..............6 Table 2 Piping connection size.
  • Page 7: Important Safety Instructions

    MPORTANT AFETY NSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important safety instructions that should be followed during the installation ™ and maintenance of the Liebert Challenger 3000 . Read this manual thoroughly before attempting to install or operate this unit. Only qualified personnel should move, install or service this equipment.
  • Page 8 Water leakage can result in severe property damage and loss of critical data center equipment. Do not locate unit directly above any equipment that could sustain water damage. Emerson recommends installing leak detection equipment for unit and supply lines.
  • Page 9: Introduction

    Introduction NTRODUCTION System Descriptions ™ Challenger 3000 environmental control systems are available in three main system configurations: • self-contained system with a scroll compressor in the room unit • self-contained chilled water system • split system with an evaporator section and a remote condensing unit All three types are available in upflow or downflow configurations.
  • Page 10: Split Systems

    Introduction 1.1.3 Split Systems Each air-cooled split system consists of an evaporator section and one of the following condensing units. Prop Fan Air-Cooled Prop Fan units include scroll compressor, condenser coil, prop fan, high pressure switch, hot gas bypass and Liebert Lee-Temp head pressure control. Unit is designed for outdoor location. Centrifugal Fan Air-Cooled Centrifugal Fan units include scroll compressor, condenser coil, centrifugal blower assembly, high-pressure switch, hot gas bypass and Liebert Lee-Temp head pressure control.
  • Page 11: Installation (Applicable To All Models )

    Installation (Applicable to all Models) NSTALLATION PPLICABLE TO ALL ODELS Room Preparation The room should be well insulated and must have a sealed vapor barrier. The vapor barrier in the ceiling can be a polyethylene film type. Use a rubber or plastic base paint on concrete walls and floors. Doors should not be undercut or have grilles in them.
  • Page 12: Handling With Skid

    Installation (Applicable to all Models) 2.4.1 Handling With Skid • Always keep the unit upright, indoors and protected from damage. • If possible, transport the unit using a fork lift; otherwise, use a crane with belts or cables, avoid- ing pressing on the top edges of the packaging. •...
  • Page 13: Figure 2 Upflow (Bu) Cabinet Dimensions

    Installation (Applicable to all Models) Figure 2 Upflow (BU) cabinet dimensions 32-1/2" (826mm) UNIT 30-1/2" STD 3 & 5T 11-3/4 (299mm) TOP VIEW (775mm) Hi Static 3T 8 5/8 (219mm) 9-5/8" 8-1/2" Hi Static 5T 11-3/4 (299mm) (244mm) (216mm) 10-1/4" 1-5/8"...
  • Page 14: Figure 3 Downflow (Bf) Cabinet Dimensions

    Installation (Applicable to all Models) Figure 3 Downflow (BF) cabinet dimensions 32-1/2" 32-1/2" Projection of Display (826mm) (826mm) Bezel 5/8" (16mm) Overall Overall Dimension Dimension 30-1/2" 30-1/2" (775mm) (775mm) Optional 1-5/8" (41mm) Flange for Duct or Plenum Connection 76" (1930mm) 1"...
  • Page 15: Piping Considerations

    Installation (Applicable to all Models) Piping Considerations All piping below the elevated floor must be located so that it offers the least resistance to air flow. Careful planning of the piping layout under the raised floor is required to prevent the air flow from being blocked.
  • Page 16: Figure 4 Piping Connections For Air-Cooled Units - Downflow Models

    Installation (Applicable to all Models) Figure 4 Piping connections for air-cooled units - Downflow models Liebert iCOM Control Panel Condensate Drain 3/4" FPT Liquid Refrigerant Line Field-pitch a minimum of 1/8" (3.2mm) 3/8" OD CU on Models BF042A/BF040A per foot (305mm). The drain line 1/2"...
  • Page 17: Figure 5 Piping Connections For Air-Cooled Units - Upflow Models

    Installation (Applicable to all Models) Figure 5 Piping connections for air-cooled units - Upflow models Piping outlet locations through the plenum are the same as the unit. See below for descriptions and connection sizes. Hot Water Return Humidifier Water Supply Line 5/8"...
  • Page 18: Figure 6 Piping Connections For Split System Fan Coil Units - Downflow Models

    Installation (Applicable to all Models) Figure 6 Piping connections for split system fan coil units - Downflow models Liebert iCOM Control PIPING OUTLET LOCATIONS (See Cabinet and Floor Planning Dimensional Data for Piping Opening Sizes.) Liquid Refrigerant Line Condensate Drain #6 Quick Connect on Models BF036E/BF035E 3/4"...
  • Page 19: Figure 7 Piping Connections For Split System Fan Coil Units - Upflow Models

    Installation (Applicable to all Models) Figure 7 Piping connections for split system fan coil units - Upflow models Piping outlet locations through the plenum are the same as the unit. See below for descriptions and connection sizes. Humidifier Water Supply Line Hot Water Return 1/4"...
  • Page 20: Figure 8 Piping Connections For Water/Glycol And Glycool Units - Downflow Models

    Installation (Applicable to all Models) Figure 8 Piping connections for water/glycol and GLYCOOL units - Downflow models iCOM Control Panel Condenser Supply Line Condensate Drain 7/8" OD CU on Models BF046WG/BF045WG 3/4" FPT 1-1/8" OD CU on Models BF071WG/BF070WG Field pitch a minimum Condenser Return Line of 1/8"...
  • Page 21: Figure 9 Piping Connections For Water/Glycol And Glycool Units - Upflow Models

    Installation (Applicable to all Models) Figure 9 Piping connections for water/glycol and GLYCOOL units - Upflow models Piping outlet locations through the plenum the same as the unit. See below for descriptions and connection sizes. Humidifier Water Supply Line Hot Water Return 1/4"...
  • Page 22: Figure 10 Piping Connections For Chilled Water Self-Contained Units - Downflow Models

    Installation (Applicable to all Models) Figure 10 Piping connections for chilled water self-contained units - Downflow models Liebert iCOM Control PIPING OUTLET LOCATIONS (See Cabinet and Floor Planning Dimensional Data for Piping Opening Sizes.) Condensate Drain Chilled Water Supply Line 3/4"...
  • Page 23: Figure 11 Piping Connections For Chilled Water Self-Contained Units - Upflow Models

    Installation (Applicable to all Models) Figure 11 Piping connections for chilled water self-contained units - Upflow models Piping outlet locations through the plenum are the same as the unit. See below for descriptions and connection sizes. Hot Water Return Humidifier Water Supply Line 5/8"...
  • Page 24: Humidifier Supply Water-Optional Infrared

    Installation (Applicable to all Models) 2.5.2 Humidifier Supply Water—Optional Infrared • 1/4" supply line; maximum water pressure is 150 psi (1034kPa) • Size humidifier supply line for 1 gpm (3.8 l/m), with a minimum water pressure of 20 psi (138kPa) •...
  • Page 25: Figure 12 Electrical Connections

    Installation (Applicable to all Models) Figure 12 Electrical connections Electrical Handy Box (factory-installed with cover; inside unit on top for upflow and on base for downflow.) Terminal Block - for customer connections 16 17 18 DPN000354 91 92 93 1 82 83 84 85 88 89...
  • Page 26: Figure 13 Electrical Field Connections For Liebert Icom

    Installation (Applicable to all Models) 15. Heat rejection connection. Field-supplied 24V Class 1 wiring to interlock heat rejection from pigtails 70 + 71 which are factory-connected to compressor side switch (self-contained units only) or to GLYCOOL relay (K11, GLYCOOL units only). On Dual Cool units only, pigtails 72 + 73 connect auxiliary cooling source to GLYCOOL relay K11.
  • Page 27: Balancing The Air Distribution

    Installation (Applicable to all Models) Balancing the Air Distribution 2.8.1 Under-Floor Discharge Systems The systems are designed for constant air delivery, therefore any unusual restrictions within the air circuit must be avoided. For under-floor air distribution, observe the following guidelines: •...
  • Page 28: Checklist For Completed Installation

    Installation (Applicable to all Models) Checklist for Completed Installation ___ 1. Unpack and check received material. ___ 2. Proper clearance for service access has been maintained around the equipment. ___ 3. Equipment is level and mounting fasteners are tight. ___ 4. Piping completed to refrigerant or coolant loop (if required). Piping has been leak checked, evacuated and charged (if required).
  • Page 29: Air -Cooled Models -Self -Contained Compressor

    Air-Cooled Models—Self-Contained Compressor —S OOLED ODELS ONTAINED OMPRESSOR Condenser Location The air-cooled condenser should be located for maximum security and maintenance accessibility. Avoid ground level sites with public access or areas that contribute to heavy snow or ice accumula- tions. Utilize centrifugal condensers whenever interior building locations must by used. To assure adequate air supply, it is recommended that condensers be located in a clean air area, away from loose dirt and foreign matter that may clog the coil.
  • Page 30: Figure 14 Air-Cooled Condensers

    Air-Cooled Models—Self-Contained Compressor Figure 14 Air-cooled condensers LIEBERT LEE-TEMP CONDENSER FAN SPEED AND VFD CONDENSER Liebert Lee-Temp heater pad connection box Hot gas line Electric service supplied by Electric others service supplied by Liquid line others Hot gas line *B - Inverted traps are to be field-supplied and installed (typ).
  • Page 31: Refrigerant Piping

    Air-Cooled Models—Self-Contained Compressor Refrigerant 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 charg- ing of the refrigeration circuits. Unit refrigeration components and piping are shipped from the factory with a nitrogen holding charge.
  • Page 32: Fan Speed Control Systems

    Air-Cooled Models—Self-Contained Compressor Table 6 Equivalent lengths (feet) for various pipe fittings Copper Pipe 90 Degree 90 Degree 45 Degree Gate Globe Angle O.D. in. Elbow Copper Elbow Cast Elbow Valve Valve Valve 0.26 0.28 12.0 1.45 0.36 17.2 1-1/8 1.85 0.48 22.5...
  • Page 33 Air-Cooled Models—Self-Contained Compressor Variable Fan Speed Control Materials Supplied • Built-in, pre-wired condenser control box • Air-Cooled condenser • Piping access cover to be reinstalled when piping is complete • Bolts—four per leg (3/8" x 5/8") • Terminal block for two-wire, 24V interlock connection between unit and condenser •...
  • Page 34: Table 10 Fan Speed Suction Pressure Transducer Settings

    When adding liquid refrigerant to an operating system, it may be necessary to add the refrigerant through the compressor suction service valve. Care must be exercised to avoid damage to the compressor. Emerson recommends connecting a sight glass between the charging hose and the compressor suction service valve. This will permit adjustment of the cylinder hand valve so that liquid can leave the cylinder while allowing vapor to enter the compressor.
  • Page 35: Figure 15 General Arrangement-Air-Cooled Models With Fan Speed Control

    Air-Cooled Models—Self-Contained Compressor Figure 15 General arrangement—Air-cooled models with fan speed control Condenser Coil Schrader Inverted Trap * on Valve discharge line to extend above base Fusible of coil by a minimum Plug of 7-1/2" (190mm) Evaporator Coil Traps* every 25 ft.
  • Page 36: Figure 16 General Arrangement-Air-Cooled Models With Digital Scroll And Fan Speed Control

    Air-Cooled Models—Self-Contained Compressor Figure 16 General arrangement—Air-cooled models with digital scroll and fan speed control Condenser Coil Inverted Trap * on Schrader discharge line to Valve extend above base of coil by a minimum Fusible of 7-1/2" (190mm) Plug Evaporator Traps* every Coil 25 ft.
  • Page 37: Air-Cooled Condenser With Liebert Lee-Temp "Flooded Condenser" Head Pressure

    Air-Cooled Models—Self-Contained Compressor Air-Cooled Condenser with Liebert Lee-Temp “Flooded Condenser” Head Pressure Control System The Liebert Lee-Temp system consists of a modulating type head pressure control valve and insulated receivers with heater pads to ensure operation at ambient temperatures as low as -30°F (-34.4°C). The Liebert Lee-Temp system can be used with any compressor choice.
  • Page 38: Table 11 Lee-Temp Suction Pressure Transducer Settings

    When adding liquid refrigerant to an operating system, it may be necessary to add the refrigerant through the compressor suction service valve. Care must be exercised to avoid damage to the compressor. Emerson recommends connecting a sight glass between the charging hose and the compressor suction service valve. This will permit adjustment of the cylinder hand valve so that liquid can leave the cylinder while allowing vapor to enter the compressor.
  • Page 39: Figure 17 General Arrangement-Air-Cooled Models With Liebert Lee-Temp

    Air-Cooled Models—Self-Contained Compressor Figure 17 General arrangement—Air-cooled models with Liebert Lee-Temp Condenser Coil Inverted Trap * on discharge line to extend above base Piping Assembly * * of coil by a minimum Check of 7-1/2" (190mm) Valve Rotalock Valve * * Head Pressure Control with 1/4"...
  • Page 40: Figure 18 General Arrangement-Air-Cooled Models With Digital Scroll And Lee-Temp

    Air-Cooled Models—Self-Contained Compressor Figure 18 General arrangement—Air-cooled models with digital scroll and Lee-Temp Condenser Coil Inverted Trap * on discharge line to extend above base Piping Assembly * * of coil by a minimum of 7-1/2" (190mm) Check Valve Rotalock Valve * * Head Pressure 1/4"...
  • Page 41: Water -Cooled Models -Self -Contained Compressor

    Water-Cooled Models—Self-Contained Compressor —S ATER OOLED ODELS ONTAINED OMPRESSOR Piping Considerations Manual shutoff valves should be installed at the supply and return lines of each unit. This will pro- vide for routine maintenance 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.
  • Page 42: Figure 19 General Arrangement-Water-Cooled Models With Scroll Compressor

    Water-Cooled Models—Self-Contained Compressor Figure 19 General arrangement—Water-cooled models with scroll compressor Evaporator Coil Expansion Valve Sensing Bulb Sight Glass External Hot Gas Equalizers Bypass Filter Valve Dryer Service Hot Gas Valves Bypass Solenoid Scroll Valve Compressor Hot Gas Bypass Tube in Tube Condenser Bypass...
  • Page 43: Figure 20 General Arrangement Diagram-Water-Cooled Models With Digital Scroll

    Water-Cooled Models—Self-Contained Compressor Figure 20 General arrangement diagram—Water-cooled models with digital scroll Evaporator Coil Expansion Valve Sensing Sight Bulb External Glass Equalizer Digital Service Filter Solenoid Valves Dryer Valve Digital Compressor Tube in Tube Condenser Tube Fluid in Tube Supply Condenser Fluid Return...
  • Page 44: Water Regulating Valve

    Water-Cooled Models—Self-Contained Compressor Water Regulating Valve The water regulating valve automatically regulates the amount of fluid necessary to remove the heat from the refrigeration system, permitting more fluid to flow when load conditions are high and less fluid to flow when load conditions are low. The valve consists of a brass body, balance spring, valve seat, valve disc holders, capillary tube to discharge pressure, and adjusting screw.
  • Page 45: Motorized Ball Valve-Digital Scroll Compressors

    Water-Cooled Models—Self-Contained Compressor Figure 22 Metrex Valve adjustment Adjusting collar nut Table 12 Refrigerant control settings psi (kPa) Low Pressure Low Pressure High Pressure Cut Out Cut In Cut Out 20 (137.9) 65 (448.2) 400 (2758) Manual Flushing The valve may be flushed by rotating the socket head screw clockwise. This screw must be in the OUT position (counterclockwise) for normal valve operation.
  • Page 46: Adjustment

    Water-Cooled Models—Self-Contained Compressor 4.4.2 Adjustment Both pressure thresholds can be shifted simultaneously over a 50psi (345kPa) range (the 35psi [241kPa] differential remains constant). The ball valve setpoint offset parameter in the Liebert iCOM Service menu can be adjusted from 0 to 50 PSI (345 kPa) to raise or lower the control band similar to the pressure adjustment on a water regulating valve.
  • Page 47: Glycol /Glycool-Cooled Models -Self -Contained Compressor

    Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor /GLYCOOL-C —S LYCOL OOLED ODELS ONTAINED OMPRESSOR Drycooler Location The drycooler should be located for maximum security and maintenance accessibility. Avoid ground- level sites with public access or areas which contribute to heavy snow or ice accumulations. To assure adequate air supply, it is recommended that drycoolers be located in a clean air area, away from loose dirt and foreign matter that may clog the coil.
  • Page 48: Glycol Piping

    Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Glycol Piping These guidelines apply to the field leak checking and fluid requirements for field piping systems. General Guidelines • Equipment damage and personal injury can result from improper piping installation, leak check- ing, fluid chemistry and fluid maintenance. •...
  • Page 49: Table 13 Room Dew Point Temperatures

    Emerson recommends installing manual service shut-off valves at the supply and return connections to each unit. This enables routine service and/or emergency isolation of the unit. In addition, multiple pump packages require a check valve at the discharge of each pump to prevent back flow through the standby pump(s).
  • Page 50: Expansion Tanks, Fluid Relief Valves And Other Devices

    Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor 5.4.1 Expansion Tanks, Fluid Relief Valves and Other Devices An expansion tank must be provided for expansion and contraction of the fluid due to temperature change in this closed system. Vents are required at system high points to vent trapped air when fill- ing the system.
  • Page 51: Glycol Solutions

    Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor 5.5.2 Glycol Solutions NOTE Glycol solutions should be considered for protection of the coil. When it is not used, damage can occur from either freezing or corrosion from water. When considering the use of any glycol products in a particular application, you should review the lat- est Material Safety Data Sheets and ensure that the use you intend can be accomplished safely.
  • Page 52: Filling The System

    Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Table 16 Ethylene glycol concentrations % Glycol by Volume Freezing Point °F (°C) 32 (0) 25 (-3.9) 16 (-8.9) 5 (-15.0) -10 (-23.3) -32 (-35.5) Apparent Specific Gravity 1.014 1.028 1.042 1.057 1.071 @ 50°F (10°C) * A minimal amount of glycol should be considered for inhibitive coil protection. NOTICE Risk of corrosion from water impurities.
  • Page 53: Figure 23 Drycoolers And Pump Packages

    Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Figure 23 Drycoolers and pump packages 43-9/16" DRYCOOLER (1105mm) GLYCOL PUMP PACKAGE See Note 1 30-1/4" (768mm) 37-7/8" (1095mm) 19" (483mm) 43-3/16" (1097mm) Provided on See Table 18 for keys to dual pump dimensions “A”, “B” and “C”. package only PUMP PACKAGE 1/2"...
  • Page 54: Figure 24 Pump Packages-Expansion Tank

    Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Figure 24 Pump packages—expansion tank 30-1/2 (774.7mm) O 9" 6-13/16" 17-1/4" (228.6mm) 1/2" FPT 1/2" FPT (173mm) (438.2mm) Fitting Fitting 2-3/4" 2-1/2" 7" (69.9mm) (63.5mm) (177.8mm) 4" 1" O 1/2" (12.7mm) 8 holes 1" (25.4mm) (101.6mm) (25.4mm) EXPANSION TANK 1-1/2"...
  • Page 55: Figure 25 General Arrangement-Glycol-Cooled Models With Scroll Compressor

    Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Figure 25 General arrangement—Glycol-cooled models with scroll compressor Expansion Tank Field-Installed at Glycol Highest Point in System Pump Pump Drycooler Unions* Housing Fill* Electric Box Drycooler Coil Fluid Isolation Expansion Evaporator Return Valves* Port* to Pump Coil Expansion Unions* Fluid...
  • Page 56: Figure 26 General Arrangement-Glycol-Cooled Models With Digital Scroll

    Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Figure 26 General arrangement—Glycol-cooled models with digital scroll Expansion Tank Field-Installed at Glycol Highest Point in System. Pump Pump Unions* Drycooler Housing Fill* Electric Drycooler Coil Evaporator Fluid Expansion Coil Return Isolation Port* to Pump Valves* Expansion Unions* Fluid Supply Valve...
  • Page 57: Figure 27 General Arrangement-Glycool Models With Scroll Compressor

    Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Figure 27 General arrangement—GLYCOOL models with scroll compressor Expansion Tank Field-Installed at Glycol Pump Highest Point in System Pump Drycooler Unions* Drycooler Housing Electric Box Fill* Coil Evaporator Fluid Return to Coil Pressure Isolation Pump Port* Valves* Unions* Expansion Fluid...
  • Page 58: Figure 28 General Arrangement-Glycool Models With Digital Scroll Compressor

    Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Figure 28 General arrangement—GLYCOOL models with digital scroll compressor Glycol Expansion Tank Field-Installed at P ump Pump Highest Point in System Drycooler Housing Unions* E lect ric Drycooler Fill* Coil Fluid E vaporat or Pressure Return to Coil Isolation Port*...
  • Page 59: Motor Ball Valve-Digital Scroll Compressors

    Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor 5.5.4 Motor Ball Valve—Digital Scroll Compressors Refer to 4.4 - Motorized Ball Valve—Digital Scroll Compressors for details on the motorized ball valve. Condenser The condenser is designed to operate in conjunction with a drycooler. The maximum coolant pressure is 350 psig (2413 kPa).
  • Page 60: Chilled Water Models

    Chilled Water Models HILLED ATER ODELS Piping 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.
  • Page 61: Figure 30 Chilled Water General Arrangement - Downflow (Bf) Models

    Chilled Water Models Figure 30 Chilled water general arrangement - Downflow (BF) models Flow Bleed Valve Chilled Valve Water Actuator Return Chilled Chilled 3-Way Water Water Chilled Supply Coil Water Valve Shutoff Valves * 3-WAY VALVE Flow Switch (optional) Chilled Flow Water Hose...
  • Page 62: Split System Models

    Split System Models PLIT YSTEM ODELS Three condensing unit styles are available: two air-cooled and one water/glycol-cooled condensing unit. Location Considerations 7.1.1 Air-Cooled Condensing Units To assure an adequate air supply, it is recommended that all condensing units be located in a clean air area, away from loose dirt and foreign matter that may clog the coil.
  • Page 63: Low Voltage

    Split System Models 7.2.2 Low Voltage The control cable between the condensing unit and the evaporator unit is connected between termi- nals 1,2 and 3 on the terminal strip in the evaporator unit and the condensing unit control box. A fourth wire is required on systems with hot gas bypass.
  • Page 64: Table 21 Unit Refrigerant Charge

    Split System Models 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.
  • Page 65: Quick Connect Fittings

    Split System Models Table 24 Line coupling sizes Model Line Size Coupling Torque (Tons) OD Cu, in. Size lb-ft. 10-12 1/2 & 5/8 35-45 35-45 1-1/8 50-65 Table 25 Equivalent lengths (feet) for various pipe fittings Copper Pipe 90 Degree 90 Degree 45 Degree Gate...
  • Page 66: Outdoor Air-Cooled Condensing Units

    Split System Models Outdoor Air-Cooled Condensing Units Figure 32 Outdoor air-cooled condensing unit—horizontal air discharge models UNIT DIMENSIONS (See Table 26) Removable (Right) Panel Fan Rotation for access to refrigeration CCW (left side) components Right Air Discharge Left Air Intake Shaded area indicates a minimum clearance of 18"...
  • Page 67: Table 26 Horizontal Air Discharge Cabinet And Floor Planning Dimensional Data

    Split System Models Table 26 Horizontal air discharge cabinet and floor planning dimensional data Model Numbers Dimensional Data in. (mm) Module Weight 60 Hz 50 Hz lb (kg) net PFC042A-_L PFC041A-_L 48 (1219) 31 (787) 18 (457) 241 (109) PFH042A-_L —...
  • Page 68: Figure 33 Outdoor Air-Cooled Condensing Unit-Top Air Discharge Models

    Split System Models Figure 33 Outdoor air-cooled condensing unit—top air discharge models Guard Height Top Air Discharge Right Air UNIT DIMENSIONS Discharge (see Table 28) Shaded area indicates Left Air a minimum clearance Intake of 18" (457mm) for proper air flow 2"...
  • Page 69: Table 28 Cabinet And Floor Planning Dimensional Data - Prop Fan Condensing Modules, Top Air

    Split System Models Table 28 Cabinet and floor planning dimensional data - prop fan condensing modules, top air discharge Model Numbers Dimensional Data in. (mm) Module Weight 60 Hz 50 Hz lb (kg) net PFC067A-_H PFC066A-_H PFH067A-_H — 53 (1343) 36-1/4 (918) 38-1/2 (978) 5-1/2 (140)
  • Page 70: Figure 34 Electrical Field Connections, Prop Fan Condensing Module

    Split System Models Figure 34 Electrical field connections, prop fan condensing module TOP AIR DISCHARGE MODELS (5-Ton High Ambient Field-supplied unit & 5-Ton Quiet-Line) disconnect switch HORIZONTAL AIR DISCHARGE MODELS Field-supplied 24V NEC Class 2 wiring to evaporator module Single- or 3-phase electric SL-11081 service;...
  • Page 71: Centrifugal Air-Cooled Condensing Units

    Split System Models Centrifugal Air-Cooled Condensing Units 7.5.1 Installing the Indoor Condensing Unit Refer to drawings for unit dimensions and component locations. WARNING Risk of heavy unit falling from supports. Can cause equipment and building damage, injury and death. Be sure the supporting roof structure is capable of supporting the weight of the unit(s) and the accessories during installation and service.
  • Page 72: Ducting

    Split System Models Figure 35 Detail of ceiling hanging bracket 3/8" threaded rod (field-supplied) 3/8" hex nut 3/8" washer Sleeve Isolator 3/8" fender washer 3/8" hex nut 3/8" hex nut Nylock Unit base pan (ref) 7.5.2 Ducting The total external static pressure for the inlet and outlet ducts, including grille, must not exceed 0.5 inches of H O.
  • Page 73: Figure 36 3-Ton Centrifugal Air-Cooled Condensing Unit Dimensional Data & Piping Connections

    Split System Models Figure 36 3-ton centrifugal air-cooled condensing unit dimensional data & piping connections Customer-supplied 22-3/4" (578mm) 50-1/4" (1276mm) threaded rods for Overall Dimension Overall Dimension module support 21-1/2" (546mm) from ceiling (typ. 4) 46-1/2" (1181mm) Cabinet Dimension Cabinet Dimension 19-1/2"...
  • Page 74: Figure 37 3-Ton Centrifugal Air-Cooled Condensing Unit (Con't.)

    Split System Models Figure 37 3-ton centrifugal air-cooled condensing unit (con't.) Field-supplied unit disconnect switch when optional disconnect is not provided in unit Single- or three-phase electric service not by Liebert Field-supplied 24V NEC Class 2 wiring Factory-wired to fan/coil unit to components on electric panel Optional factory-installed...
  • Page 75: Figure 38 5-Ton Centrifugal Air-Cooled Condensing Unit Dimensional Data

    Split System Models Figure 38 5-ton centrifugal air-cooled condensing unit dimensional data 32" (812.8mm) 54" Cabinet (1371.6mm) Dimension 1-5/8" Cabinet (41.1mm) Dimension 15-3/4" (400mm) 48" 8-15/16" Customer-supplied (1219.2mm) (227mm) threaded rods for module support 3-3/8" from ceiling (typ. 4) (85.7mm) 14-1/2"...
  • Page 76: Figure 39 5-Ton Centrifugal Air-Cooled Condensing Unit Dimensional Data (Con't.)

    Split System Models Figure 39 5-ton centrifugal air-cooled condensing unit dimensional data (con't.) Field-Supplied Unit Disconnect Switch when Factory Unit Disconnect Switch is not Supplied Electric service not by Liebert Optional Factory-Installed Disconnect Switch AIR COOLED Line Voltage Electric Power Connection terminal Supply Conduit Voltage for field-supplied...
  • Page 77: Figure 40 Split Systems General Arrangement

    Split System Models Figure 40 Split systems general arrangement Hot-Gas High-Pressure Condenser Bypass Solenoid Switch Coil Valve Scroll Compressor 1/2" (12.7mm) NPT Liquid Injection Pressure Relief Valve Valve Bulb Suction Line Check Male Quick Sight AIR COOLED Valve Connect Glass Suction Line Coupling* Female Quick...
  • Page 78: Water And Glycol-Cooled Condensing Units

    Split System Models Water and Glycol-Cooled Condensing Units For installation guidelines, refer to Installing the Indoor Condensing Unit on page 65. 7.6.1 Piping Considerations It is recommended that manual service shut-off valves be installed at the supply and return line to each unit.
  • Page 79: Glycol Systems

    Split System Models 7.6.4 Glycol Systems For split system glycol systems, use drycooler and pump data found in 5.0 - Glycol/GLYCOOL- Cooled Models—Self-Contained Compressor. See Table 18 - Drycooler data. Electrical control interconnect to drycooler is wired from water/glycol condensing unit. Figure 41 3-ton water/glycol-cooled condensing unit 8-7/8"...
  • Page 80: Figure 42 3-Ton Water/Glycol-Cooled Condensing Unit (Con't.)

    Split System Models Figure 42 3-ton water/glycol-cooled condensing unit (con't.) Single- or Field-supplied unit disconnect three-phase switch when optional disconnect electric service is not provided in unit not by Liebert Field-supplied 24V NEC Class 1 wiring to fan/coil unit Field-supplied 24V NEC Class 1 wiring to drycooler (glycol-cooled units only) Earth/ground connection...
  • Page 81: Figure 43 5-Ton Water/Glycol-Cooled Condensing Unit Dimensional Data

    Split System Models Figure 43 5-ton water/glycol-cooled condensing unit dimensional data 32" 32" (812.8mm) Customer-supplied (812.8mm) Cabinet threaded rods Cabinet Dimension for module support Dimension from ceiling (typ. 4). Removable Access Panel 1/2" (12.7mm) dia. holes for 24 " module rigging (typ. 2 each end) (610mm) Cabinet Hanger...
  • Page 82: Figure 44 5-Ton Water/Glycol-Cooled Condensing Unit (Con't.)

    Split System Models Figure 44 5-ton water/glycol-cooled condensing unit (con't.) Field-supplied unit disconnect Electric service; switch when factory unit not by Liebert disconnect switch is not suplied WATER/GLYCOL Optional factory-installed disconnect switch Field-supplied 24V NEC Class 1 wiring to fan/coil unit Field-supplied 24V NEC Class 1 wiring to drycooler...
  • Page 83: R407C Refrigerant

    R407C Refrigerant R407C R EFRIGERANT Table 33 R407C pressure/temperature chart for operation and superheat (discharge/hot gas and suction gas) Temperature Gauge Pressure Temperature Gauge Pressure Temperature Gauge Pressure °F °C Psig °F °C Psig °F °C Psig -17.8 18.9 35.0 54.8 70.0 21.1...
  • Page 84: Calculating Subcooling

    R407C Refrigerant Table 34 R407C pressure/temperature chart for subcooling only (liquid measurements) Temperature Pressure Gauge Temperature Pressure Gauge Temperature Pressure Gauge °F °C Psig °F °C Psig °F °C Psig 36.0 59.0 15.0 94.0 34.4 1402 37.0 60.0 15.6 96.0 35.6 1444 38.0...
  • Page 85 R407C Refrigerant NOTES...
  • Page 86 R407C Refrigerant...
  • Page 88 Racks & Integrated Cabinets Connectivity Embedded Power Power Switching & Controls Services DC Power Monitoring Precision Cooling Surge Protection Business-Critical Continuity, Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co. ©2008 Emerson Electric Co.

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