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Emerson Liebert Challenger 3000 Installation Manual

Precision cooling for business-critical continuity, 3 & 5 tons, 50 & 60hz
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Table of Contents
Liebert Challenger
Installation Manual - 3 & 5 Tons, 50 & 60Hz
3000
™
Precision Cooling
For Business-Critical Continuity

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  Also See for Emerson Liebert Challenger 3000

Emerson Liebert Challenger 3000 User Manual
Emerson Liebert Challenger 3000 User Manual 100 pages
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  Summary of Contents for Emerson Liebert Challenger 3000

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

  • Page 3: Table Of Contents

    TABLE OF CONTENTS ............1 NTRODUCTION System Descriptions .
  • Page 4 Drycooler Installation ............30 Electrical Connections .
  • Page 5 FIGURES Figure 1 Removing Challenger from skid ........... . . 3 Figure 2 Upflow (BU) cabinet dimensions .
  • Page 6 TABLES Table 1 Unit net weight ..............3 Table 2 Piping connection size.

  • Page 7: 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 8: Installation

    Installation NSTALLATION 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 9: Removal Of Skid

    Installation 2.4.2 Removal of Skid • Remove the plywood skirting that keeps the skid and unit in place. • Raise the Challenger 3000 off the skid. Liebert recommends using a fork lift (see Figure 1) or similar machine to ensure that the unit is lifted properly. •...

  • Page 10: Figure 2 Upflow (Bu) Cabinet Dimensions

    Installation Figure 2 Upflow (BU) cabinet dimensions 32 1/2" (826mm) 30 1/2" (775mm) STD 3 & 5T 11-3/4 (299mm) Hi Static 3T 8 5/8 (219mm) 8 1/2" 9 5/8" (244mm) (216mm) Hi Static 5T 11-3/4 (299mm) 10 1/4" 1 5/8" 13"...

  • Page 11: Figure 3 Downflow (Bf) Cabinet Dimensions

    Installation Figure 3 Downflow (BF) cabinet dimensions 32 1/2 " 32 1/2 " (826mm) (826mm) Projection of Display Overall Overall Bezel 5/8" (16mm) Dimension Dimension 30 1/2 " 30 1/2 " (775mm) (775mm) Optional 1 5/8" (41mm) Flange for Duct or Plenum Connection 76 "...

  • Page 12: Piping Considerations

    Installation 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 13: Figure 4 Piping Connections For Air Cooled Units

    Installation Figure 4 Piping connections for air cooled units DOWNFLOW (BF) MODELS Monitoring Panel Condensate Drain, 3/4” FPT Liquid Refrigerant Line Field pitch minimum of 3/8" OD CU on Models BF042A/BF040A 1/8” (3.2mm) per foot (305mm). 1/2" OD CU on Models BF067A/BF065A The drain line must comply with Hot Gas Refrigerant Line all applicable codes...

  • Page 14: Figure 5 Piping Connections For Split System Fan Coil Units

    Installation Figure 5 Piping connections for split system fan coil units Piping outlet locations through the plenum are the same as the unit. See below for UPFLOW (BU) MODELS descriptions and connection sizes. Humi d ifier Water Supply Line Hot Water Return 1/4"...

  • Page 15: Figure 6 Piping Connections For Water/Glycol And Glycool Units

    Installation Figure 6 Piping connections for water/glycol and GLYCOOL units DOWNFLOW (BF, BE) MODELS Monitoring Panel Condensate Drain 3/4” FPT Condenser S upply Line Field pitch a min. of 1/8" (3.2mm) per ft. (305mm). 7/8" OD CU on Models BF046WG/BF045WG The drain line must comply 1 1/8"...

  • Page 16: Figure 7 Piping Connections For Chilled Water Self-Contained Units

    Installation Figure 7 Piping connections for chilled water self-contained units Piping outlet locations through the plenum are the same as the unit. See below for descriptions and connectoin sizes UPFLOW (BU) MODELS Humidifier Water Supply Hot Water Return Line Line 1/4" OD CU 5/8"...
  • Page 17 Installation...

  • Page 18: Electrical Connections

    Installation Electrical Connections Three-phase electrical service is required for all models in either 208, 230, 460, or 575 V, 60 Hz; or 200, 230, or 380/415 V, 50 Hz. Electrical service shall conform to national and local electrical codes. Refer to equipment nameplate regarding wire size and circuit protection requirements. Refer to elec- trical schematic when making connections.

  • Page 19: Balancing The Air Distribution

    Installation 13. Smoke detector alarm connections. Field-supplied 24V. Class 1 wiring to remote alarm circuits. Factory-wired contacts from optional smoke detector are #91 -comm., #92-NO, and #93-NC. 14. Common alarm connection. Field-supplied 24V. Class 1 wiring to common alarm terminals 75 + 76 (and optional 94 + 95, and 96 + 97), which are factory connected to common alarm relay (R3).

  • Page 20: Ducted Applications

    Installation 2.7.2 Ducted Applications For ducted applications on units, the duct work may be attached to the top perimeter of the unit. Refer to Figure 2 for information on upflow units and to Figure 3 for downflow units. The duct work on upflow units must allow access to the motors/blowers for maintenance. The duct work on upflow units must be designed within the capacity of the unit, otherwise air flow and perfor- mance will be compromised.
  • Page 21 Installation...

  • Page 22: Air Cooled Models

    Air Cooled Models OOLED ODELS 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 23: Figure 9 Air Cooled Condensers

    Air Cooled Models Figure 9 Air cooled condensers LEE-TEMP CONDENSER Lee-Temp heater pad FAN SPEED CONDENSER connection box Hot gas line Electric service supplied by Electric others service supplied by others Liquid line Hot gas line *B - Inverted traps are to be field-supplied and installed (typ).

  • Page 24: Refrigerant Piping

    Air Cooled Models 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 25: Fan Speed Control Systems

    Air Cooled Models 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 26: Dehydration/Leak Test And Charging Procedures For R22 (Standard) Or R407C (Optional)

    Air Cooled Models 3.4.2 Dehydration/Leak Test and Charging Procedures for R22 (standard) or R407C (Optional) Fan Speed Control Type Condenser CAUTION All local codes for handling refrigerant must be followed. NOTE As R22 and R407C are similar in properties, proper safety equipment and proper refrigeration tools are required on both types.

  • Page 27: Figure 10 Air Cooled Fan Speed Control General Arrangement

    Air Cooled Models Figure 10 Air cooled fan speed control general arrangement Condenser Coil Schrader Valve Fusible Plug Inverted Traps* on discharge and return lines to extend above base of coil by a minimum of 7 1/2" (190mm) Evaporator Traps* every Coil 25 ft.

  • Page 28: Charging

    Air Cooled Models 3.4.3 Charging 1. Make sure unit is OFF. Open all disconnect switches and, on units supplied with circuit breakers, open all breakers. Replace all fuses for the Fan and Compressors or close breakers. 2. Remove jumper on the Fan Safety Switch and reconnect the system wire connections. Ensure that all operational components are clear of debris.

  • Page 29: Materials Supplied

    Air Cooled Models 3.5.2 Materials Supplied 1. Built-in pre-wired condenser control box 2. Air cooled condenser 3. Piping access cover to be reinstalled when piping is complete 4. Bolts (four per leg) 3/8" x 5/8" 5. Terminal block for two-wire 24V interlock connection between the unit and the condenser 6.

  • Page 30: Charging

    Air Cooled Models Dehydration/Leak Test 1. Make sure unit is OFF. Open all disconnect switches and pull all fuses except control fuses. On units supplied with circuit breakers, open all breakers except for the transformer. 2. Add a jumper to the Fan Safety Switch between Common and Normal Open and disconnect the wire connected to the Normally Closed.

  • Page 31: Figure 11 Air Cooled, Lee-Temp General Arrangement

    Air Cooled Models Figure 11 Air cooled, Lee-Temp general arrangement Inverted Trap * on Condenser Coil discharge line to extend above base of coil by a minimum of 7 1/2" Piping Assembly * * (190mm) Rotalock Valve ** Check Valve Head Pressure Control with 1/4"...

  • Page 32: Water Cooled Models

    Water Cooled Models ATER OOLED ODELS Piping Considerations Manual shut-off 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 33: Figure 12 Water Cooled General Arrangement

    Water Cooled Models Figure 12 Water cooled general arrangement Evaporator Coil Expansion Valve Sensing Bulb Sight Glass External Hot Gas Equalizers Bypass Valve Scroll Filter Compressor Drier Service Hot Gas Valves Bypass Solenoid Valve Hot Gas Bypass Tube in Tube Fluid Condenser Bypass...

  • Page 34: Water Regulating Valve

    Water Cooled Models 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 35: High Pressure Valve - 350 Psig (2413 Kpa) System For 3 Ton Units (Metrex Valve)

    Water Cooled Models 4.3.2 High Pressure Valve - 350 psig (2413 kPa) System for 3 Ton Units (Metrex Valve) Adjustment The valve may be adjusted using a 1/8" diameter rod. Turn the adjusting collar nut counterclockwise to raise head pressure; turn it clockwise to lower head pressure. Rotation directions are viewed from top of valve spring housing.

  • Page 36: Glycol /Glycool Cooled Models

    Glycol/GLYCOOL Cooled Models /GLYCOOL C LYCOL OOLED ODELS 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 37: Glycol Piping

    Glycol/GLYCOOL Cooled Models Glycol Piping CAUTION Galvanized pipe must not be used in or with systems or units that contain glycol. The phosphates in the inhibitor can react with the zinc in the galvanized pipe, precipitating an insoluble material that can eventually foul the system. CAUTION To help prevent piping failures, supply and return lines must be supported in a way that keeps their weight from bearing on the piping of the unit, drycooler or pumps.

  • Page 38: Expansion Tanks, Fluid Relief Valves And Other Devices

    Glycol/GLYCOOL Cooled Models 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 39: Glycol Solutions

    Glycol/GLYCOOL Cooled Models 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 40: Filling The System

    Glycol/GLYCOOL Cooled Models 5.5.3 Filling the System Installation of hose bibs at the lowest point of the system is recommended. When filling a glycol sys- tem keep air to a minimum. Air in glycol turns to foam and is difficult and time-consuming to remove. (Anti-foam additives are available and may be considered.) Open all operating systems to the loop.

  • Page 41: Figure 15 Drycoolers And Pump Packages

    Glycol/GLYCOOL Cooled Models Figure 15 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 42: Figure 16 Pump Packages-Expansion Tank

    Glycol/GLYCOOL Cooled Models Figure 16 Pump packages—expansion tank 30 1/2 " (774.7mm) 9 " (228.6mm) 6 13/16 " 17 1/4 " (438.2mm) (173mm) 1/2" F.P.T. 1/2" F.P.T. FITTING FITTING 2 3/4 " 2 1/2 " 7 " (69.9mm) (63.5mm) (177.8mm) 4 "...

  • Page 43: Figure 17 Glycol General Arrangement

    Glycol/GLYCOOL Cooled Models Figure 17 Glycol general arrangement Expansion Tank Field Installed at Glycol Drycooler Highest Point in System. Pump Electric Unions* Fill * Pump Drycooler Housing Coil Expansion Fluid Evaporator Isolation Port* Return Coil Valves* to Pump Unions* Expansion Fluid Valve Supply...

  • Page 44: Figure 18 Glycool General Arrangement

    Glycol/GLYCOOL Cooled Models Figure 18 GLYCOOL general arrangement Expansion Tank Field Installed at Glycol Highest Point in System Pump Unions* Pump Fill * Drycooler Drycooler Housing Electric Coil Fluid Return to Evaporator Pressure Isolation Pump Coil Port* Valves* Unions* Expansion Fluid Valve Supply...

  • Page 45: Condenser

    Glycol/GLYCOOL Cooled Models Condenser The condenser is designed to operate in conjunction with a drycooler. The maximum coolant pressure is 350 psig (2413 kPa). NOTE For pressures above 150 psig (1034 kPa), the high pressure option for high pressure valve(s) is required.

  • Page 46: 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 47: Figure 20 Chilled Water General Arrangement - Downflow (Bf) Models

    Chilled Water Models Figure 20 Chilled water general arrangement - downflow (BF) models Flow Bleed Valve Chilled Valve Water Actuator Return Chilled Chilled 3-Way Water Water Chilled Coil Supply Water Valve Shutoff Valves* 3-WAY VALVE Flow Switch (optional) Flow Hose Bibs* Bleed Valve...

  • Page 48: Split System Models

    Split System Models PLIT YSTEM ODELS Three (3) condensing unit styles are available: two (2) air cooled and one (1) water/glycol cooled con- densing 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 49: Piping Considerations

    Split System Models Piping Considerations 7.3.1 Refrigerant Loop CAUTION All local codes for handling refrigerant must be followed. NOTE As R22 and R407C are similar in properties, proper safety equipment and proper refrigeration tools are required on both types. Check unit nameplate for correct refrigerant type before topping off or recharging a system.

  • Page 50: Table 21 Unit Refrigerant Charge

    Split System Models 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.

  • Page 51: Figure 21 Refrigerant Piping Diagram

    Split System Models Table 25 Equivalent lengths (feet) for various pipe fittings Copper Pipe 90 Degree 90 Degree 45 Degree Gate Globe Angle OD 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 52: Quick Connect Fittings

    Split System Models 7.3.2 Quick Connect Fittings NOTE When hard piping is used, complete all piping and evacuate lines before connecting quick connects. Be especially careful when connecting the quick connect fittings. Read through the following steps before making the connections. 1.

  • Page 53: Outdoor Air Cooled Condensing Units

    Split System Models Outdoor Air Cooled Condensing Units Figure 22 Outdoor air cooled condensing unit—horizontal air discharge models UNIT DIMENSIONS (See Table 26) REMOVABLE (RIGHT) PANEL Fan Rotation FOR ACCESS TO REFRIGERATION COMPONENT. (left side) RIGHT DISCHARGE LEFT INTAKE SHADED AREA INDICATES A MINIMUM CLEARANCE OF 18"...

  • Page 54: 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 lbs (kg) net PFC042A-_L PFC041A-_L 48 (1219) 31 (787) 18 (457) 241 (109) PFH042A-_L PFC042A-_H PFC041A-_H PFH042A-_H...

  • Page 55: Figure 23 Outdoor Air Cooled Condensing Unit-Top Air Discharge Models

    Split System Models Figure 23 Outdoor air cooled condensing unit—top air discharge models GUARD HEIGHT DISCHARGE RIGHT UNIT DIMENSIONS INTAKE (see Table 28) LEFT SHADED AREA INTAKE INDICATES A RECOMMENDED CLEARANCE OF 18" (457mm) FOR PROPER AIR FLOW 2 " (51mm) SHADED AREA INDICATES A RECOMMENDED...

  • Page 56: 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 lbs (kg) net PFC067A-_H PFC066A-_H PFH067A-_H 53 (1343) 36-1/4 (918) 38-1/2 (978) 5-1/2 (140) 488 (222)

  • Page 57: Figure 24 Electrical Field Connections, Prop Fan Condensing Module

    Split System Models Figure 24 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...

  • Page 58: 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 Be sure the supporting roof structure is capable of supporting the weight of the unit(s) and the accessories during installation and service.

  • Page 59: Figure 25 Detail Of Ceiling Hanging Bracket

    Split System Models Figure 25 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)

  • Page 60: Ducting

    Split System Models 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. Hood intake dimensions should be the same as the condensing unit duct dimen- sions. If the condensing unit is located close to the outside of the building, rain hoods must be installed.

  • Page 61: Figure 26 2 And 3 Ton Centrifugal Air Cooled Condensing Unit Dimensional Data & Piping Connections

    Split System Models Figure 26 2 and 3 ton centrifugal air cooled condensing unit dimensional data & piping connections Customer-supplied threaded rods for 22 3/4" (578mm) 50 1/4" (1276mm) Overall Di m ension module support Overall Di m ension 21 1/2" (546mm) from ceiling (typ.

  • Page 62: Figure 27 3 Ton Centrifugal Air Cooled Condensing Unit (Con't.)

    Split System Models Figure 27 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 to fan/coil unit Optional factory-installed disconnect switch Factory-wired...

  • Page 63: Figure 28 5 Ton Centrifugal Air Cooled Condensing Unit Dimensional Data

    Split System Models Figure 28 5 ton centrifugal air cooled condensing unit dimensional data 32 " (812.8mm) CABINET 54 " DIMENSION (1371.6mm) 1 5/8 " CABINET (41.1mm) DIMENSION 15 3/4 " (400mm) 8 15/16 " 48 " (227mm) (1219.2mm) Customer-supplied threaded rods for module 3 3/8 "...

  • Page 64: Figure 29 5 Ton Centrifugal Air Cooled Condensing Unit Dimensional Data (Con't.)

    Split System Models Figure 29 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 Supply Conduit Voltage Connection terminal for field...

  • Page 65: Figure 30 Split Systems General Arrangement

    Split System Models Figure 30 Split systems general arrangement Hot Gas Condenser Bypass Solenoid High Pressure Coil Valve Switch Scroll Compressor Liquid Injection 1/2" (12.7mm) NPT Valve Bulb Pressure Relief Valve Suction Line Male Quick Sight Check Valve AIR COOLED Connect Glass Suction Line...

  • Page 66: 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 52. 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 67: Figure 31 2 And 3 Ton Water/Glycol Cooled Condensing Unit

    Split System Models Figure 31 2 and 3 ton water/glycol cooled condensing unit 8 7/8" (225mm) 14" (356mm) 3 7/8" (98mm) 50 1/4" (1276mm) Overall Cabinet Overall Dimension Dimension 48 1/4" (1225mm) 12" (305mm) Threaded Rod Centers Threaded Rod 8 7/16" (214mm) Centers 46 1/2"...

  • Page 68: Figure 32 3 Ton Water/Glycol Cooled Condensing Unit (Con't.)

    Split System Models Figure 32 3 ton water/glycol cooled condensing unit (con't.) Field-supplied unit disconnect Single- or three-phase electric switch when optional disconnect service not by Liebert is not provided in unit Field-supplied 24V NEC Class 1 wiring to fan/coil unit Field-supplied 24V NEC Class 1 wiring to drycooler (glycol-cooled units only)

  • Page 69: Figure 33 5 Ton Water/Glycol Cooled Condensing Unit Dimensional Data

    Split System Models Figure 33 5 ton water/glycol cooled condensing unit dimensional data 32 " 32 " (812.8mm) (812.8mm) CABINET CABINET Customer supplied threaded rods DIMENSION DIMENSION for module support from ceiling (typ. 4). Removable Access Panel 24 " 1/2" (12.7mm) dia. holes for (610mm) module rigging (typ.

  • Page 70: Figure 34 5 Ton Water/Glycol Cooled Condensing Unit (Con't.)

    Split System Models Figure 34 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 (glycol-cooled units only)

  • Page 71: 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 72: 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 73 R407C Refrigerant Notes...
  • Page 74 R407C Refrigerant...
  • Page 76 Power Switching & Control Site Monitoring DC Power Systems Integrated Cabinet Solutions 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. ©2006 Emerson Electric Co.

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