Precision Cooling For Business-Critical Continuity™ Liebert® Challenger™ ITR Installation Manual - Nominal Capacities 23 or 33 kW, 50 & 60Hz
TABLE OF CONTENTS 1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 1.1 System Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1.1 1.1.2 1.1.3 Self Contained Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Chilled Water Models . . . . . . . . . . . . . . . . . . .
5.2 5.3 Drycooler Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.3.1 5.3.2 5.3.3 5.4 Glycol Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 5.4.1 5.
FIGURES Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Removing Liebert Challenger ITR from skid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Cabinet dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TABLES Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Table 24 Table 25 Table 26 Table 27 Table 28 Table 29 Table 30 Table 31 Table 32 Table 33 Unit shipping weights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Piping connection size. . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 1.0 INTRODUCTION 1.1 System Descriptions Liebert Challenger ITR™ 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 horizontal flow configurations. Each model requires three-phase power.
Installation 2.0 INSTALLATION 2.1 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. Outside (or fresh) air should be kept to an absolute minimum. Outside air adds to the heating, cooling, humidifying and dehumidifying loads of the site.
Installation 2.4.1 Handling With Skid • Always keep the Liebert Challenger ITR upright, indoors and protected from damage. • Do not use the extended rear door frame to lift the unit. • If possible, transport the unit using a fork lift; otherwise, use a crane with belts or cables, avoiding pressing on the top edges of the packaging. • If using a fork lift, make sure that the forks, if adjustable, are spread to the widest allowable distance to still fit under the skid.
Installation Figure 2 Cabinet dimensions Unit Weight 50 Hz Models BR059E 60 Hz Models lb.
Installation Figure 3 Optional floor stand dimensions 30-1/2" (775mm) 1" (25.4mm) See Specification Sheet for height of floor stand ordered. 30-1/2" (775mm) SL-11897 Pg.
Installation 2.5 Piping Considerations Consideration should be given before installing refrigerant and liquid lines next to, under or above electronic equipment. 2.5.1 Drain Line A 3/4" (19.1 mm) female pipe thread (FPT) connection is provided for the evaporator coil condensate drain. This drain line also drains the humidifier, if applicable. The drain line must be located so it will not be exposed to freezing temperatures.
Installation Figure 4 Piping connections for air-cooled units Piping outlet locations through the plenum are the same as the unit. See below for descriptions and connection sizes.
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 descriptions and connection sizes.
Installation Figure 6 Piping connections for water/glycol and GLYCOOL units Piping outlet locations through the plenum are the same as the unit. See below for descriptions and connection sizes.
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 connection sizes.
Installation 2.6 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 electrical schematic when making connections. A manual electrical disconnect switch should be installed within 5 feet (1.
Installation 9. Special alarm connections. Field-supplied 24V Class 1 wiring for special alarm. Connection made by adding normally open contacts between terminals 24 + 50. Optional additional connections available with Advanced or Advanced with Graphics controls and appropriate optional accessories (connections 51, 55, and 56). 10. Liebert SiteScan® connection.
Installation 2.8 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). ___ 5. Check piping within the Liebert Challenger ITR and outside of the unit. Remove potential of rub-through or chaffing. ___ 6.
Air-Cooled Models 3.0 AIR-COOLED MODELS 3.1 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 accumulations. 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.
Air-Cooled Models Figure 9 Air-cooled condensers LEE-TEMP CONDENSER Lee-Temp heater pad connection box FAN SPEED CONDENSER *B Hot gas line Electric service supplied by others *B Liquid line Hot gas line Electric service supplied by others *B - Inverted traps are to be field-supplied and installed (typ). When installing traps, provide clearance for swing end of access door.
Air-Cooled Models 3.3 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 charging of the refrigeration circuits. Unit refrigeration components and piping are shipped from the factory with a nitrogen holding charge. NOTE The refrigeration piping should be isolated from the building by the use of vibration isolating supports.
Air-Cooled Models Table 5 Equivalent lengths (feet) for various pipe fittings Copper Pipe O.D. in. 1/2 5/8 3/4 7/8 1-1/8 1-3/8 1-5/8 90 Degree Elbow Copper 0.8 0.9 1.0 1.45 1.85 2.4 2.9 90 Degree Elbow Cast 1.3 1.4 1.5 1.8 2.2 2.9 3.5 45 Degree Elbow 0.4 0.5 0.6 0.8 1.0 1.3 1.6 Tee 2.5 2.5 2.5 3.6 4.6 6.4 7.2 Gate Valve 0.26 0.28 0.3 0.36 0.48 0.65 0.72 Globe Valve 7.0 9.5 12.0 17.2 22.5 32.0 36.0 Angle Valve 4.0 5.0 6.5 9.5 12.0 16.0 19.
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. Check unit nameplate for correct refrigerant type before topping off or recharging a system. NOTE Refrigerant R407C uses a POE (polyol ester) lubricant.
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 Coil Traps* every 25 ft. (7.
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. Turn unit ON. (Fan operation is required.) Check the evaporator fan for proper rotation and correct if necessary. 3.
Air-Cooled Models 3.5.2 Materials Supplied 1. 2. 3. 4. 5. 6. 7. 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 the unit and the condenser Condenser legs: four on one-fan models Lee-Temp system: a. Insulated storage receiver b. Head pressure control valve with integral check valve c. Adapter assembly d. Rotalock valve e.
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. Turn unit disconnect ON. (Fan operation not required.) 3. 4. 5. 6. 7. 8. 3.5.
Air-Cooled Models Figure 11 Air-cooled, Lee-Temp general arrangement Inverted Trap * on discharge line to extend above base of coil by a minimum of 7 1/2" (190mm) Condenser Coil Piping Assembly * * Check Valve Head Pressure Control with Integral Check Valve Rotalock Valve ** 1/4" ( 6.4mm) Pressure Relief Valve * * Lee-Temp Receiver Sight Glass Traps * Every 25 Ft. (7.
Water-Cooled Models 4.0 WATER-COOLED MODELS 4.1 Piping Considerations Manual shut-off valves should be installed at the supply and return lines of each unit. This will provide 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 filters in the supply line. These filters will trap the particles in the water supply and extend the service life of the water-cooled condenser.
Water-Cooled Models Figure 12 Water-cooled general arrangement Evaporator Coil Expansion Valve Sensing Bulb Sight Glass Hot Gas Bypass Valve Filter Drier Hot Gas Bypass Solenoid Valve External Equalizers Scroll Compressor Service Valves Hot Gas Bypass Fluid Supply To Unit Fluid Return From Unit Tube in Tube Condenser Bypass Valve Tube in Tube Condenser Shutoff* Valves 2-Way Water Regulating Valve 3-Way Water Regulating Valve (optional) Hose Bibs* Fluid Supply To Unit Fluid Return From Unit
Water-Cooled Models 4.3 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. 4.3.
Glycol/GLYCOOL-Cooled Models 5.0 GLYCOL/GLYCOOL-COOLED MODELS 5.1 Drycooler Location The drycooler should be located for maximum security and maintenance accessibility. Avoid groundlevel 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.
Glycol/GLYCOOL-Cooled Models 5.4 Glycol Piping NOTICE 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. 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.
Glycol/GLYCOOL-Cooled Models 5.5 Filling Instructions 5.5.1 Preparing the System for Filling It is important to remove any dirt, oil or metal filings that may contaminate the cooling system piping in order to prevent contamination of the fresh glycol solution and fouling of the drycooler piping. The system should be flushed thoroughly using a mild cleaning solution or high-quality water and then completely drained before charging with glycol.
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 latest Material Safety Data Sheets and ensure that the use you intend can be accomplished safely. For Material Safety Data Sheets and other product safety information, contact the supplier nearest you.
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 system 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. With the top vent(s) open, fill the system from the bottom of the loop.
Glycol/GLYCOOL-Cooled Models Figure 14 Drycoolers and pump packages 43-9/16" (1105mm) DRYCOOLER A GLYCOL PUMP PACKAGE See Note 1 30-1/4" (768mm) 37-7/8" (1095mm) 19" (483mm) B 43-3/16" (1097mm) See Table 16 for keys to dimensions “A”, “B” and “C”. PUMP PACKAGE MOUNTING ANGLES Provided on dual pump package only 1/2" diameter holes for mounting (4 typ) Note: Angles located inside, bottom of pump package. View used for mounting reference. 3/4" (19mm) C Notes 1.
Glycol/GLYCOOL-Cooled Models Figure 15 Pump packages—expansion tank 30-1/2" (774.7mm) O 9" (228.6mm) 6-13/16" (173mm) 1/2" FPT Fitting 1/2" FPT Fitting 2-3/4" (69.9mm) 17-1/4" (438.2mm) 2-1/2" 7" (63.5mm) (177.8mm) 1-1/2" (38.1mm) Table 15 4" (101.6mm) 1" (25.4mm) 1" (25.4mm) O 1/2 " (12.7mm) (8) Holes 8.8 Gallon Expansion Tank (33.3 Liter) 1-1/2" (38.1mm) 3" (76.2mm) 6-1/8" (155.
Glycol/GLYCOOL-Cooled Models Figure 16 Glycol general arrangement Expansion Tank Field Installed at Highest Point in System.
Glycol/GLYCOOL-Cooled Models Figure 17 GLYCOOL general arrangement Expansion Tank Field Installed at Highest Point in System Fill * Drycooler Electric Box Unions* Drycooler Coil Fluid Return to Pump Pressure Port* Unions* Air Vents* at Top of Risers Hose Bib* Pressure Port* Glyco l Pump Evaporator Coil Isolation Valves* Expansion Valve Fluid Supply from Pump Flow Regulating Valve* Pump Housing Sensing Bulb Sight Glass Hot Gas External Bypass Scroll Equalizers Valve Compressor Filter Drier Ho
Glycol/GLYCOOL-Cooled Models 5.6 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. 5.
Chilled Water Models 6.0 CHILLED WATER MODELS 6.1 Piping Considerations Manual shut-off valves should be installed at the supply and return lines to each unit. This will provide 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.
Split System Models 7.0 SPLIT SYSTEM MODELS Three (3) condensing unit styles are available: two (2) air-cooled and one (1) water/glycol-cooled condensing unit. 7.1 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.
Split System Models 7.3 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. NOTE Refrigerant R407C uses a POE (polyol ester) lubricant.
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. After completion of leak testing, release the test pressure (per local code) and pull a deep vacuum on the field piping with a suitable pump. 3.
Split System Models Table 23 Equivalent lengths (feet) for various pipe fittings Copper Pipe OD in. 90 Degree Elbow Copper 90 Degree Elbow Cast 45 Degree Elbow Tee Gate Valve Globe Valve Angle Valve 1/2 0.8 1.3 0.4 2.5 0.26 7.0 4.0 5/8 0.9 1.4 0.5 2.5 0.28 9.5 5.0 3/4 1.0 1.5 0.6 2.5 0.3 12.0 6.5 7/8 1.45 1.8 0.8 3.6 0.36 17.2 9.5 1-1/8 1.85 2.2 1.0 4.6 0.48 22.5 12.0 1-3/8 2.4 2.9 1.3 6.4 0.65 32.0 16.0 1-5/8 2.9 3.5 1.6 7.2 0.72 36.0 19.
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. 2. 3. 4. 5. Remove protector caps and plugs. Carefully wipe coupling seats and threaded surfaces with a clean cloth. Lubricate the male diaphragm and synthetic rubber seal with refrigerant oil.
Split System Models 7.4 Outdoor Air-Cooled Condensing Units Figure 20 Outdoor air-cooled condensing unit—horizontal air discharge models UNIT DIMENSIONS (See Table 24) C REMOVABLE (R IGHT) PANEL FOR ACCESS TO REFRIGERATION COMPONENT. Fan Rotation CCW (left side) A RIGHT AIR DISCHARGE LEFT AIR INTAKE B C SHADED AREA INDICATES A MINIMUM CLEARANCE OF 18" (457mm) FOR PROPER AIR FLOW C SHADED AREA INDICATES A MINIMUM CLEARANCE OF 18" (457mm) FOR PROPER AIR FLOW.
Split System Models Table 24 Horizontal air discharge cabinet and floor planning dimensional data Model Numbers 60 Hz 50 Hz PFC067A-_L PFC066A-_L PFH067A-_L Table 25 Dimensional Data in. (mm) A B C Module Weight lb (kg) net 53 (1343) 36-1/4 (918) 18 (457) 351 (159) Horizontal air discharge piping and electrical connection data Model Numbers 60 Hz 50 Hz PFC067A-_L PFC066A-_L PFH067A-_L Dimensional Data in. (mm) Piping Connections in.
Split System Models Figure 21 Outdoor air-cooled condensing unit—top air discharge models GUARD HEIGHT TOP AIR DISCHARGE D RIGHT AIR INTAKE UNIT DIMENSIONS (see Table 26) B LEFT AIR INTAKE SHADED AREA INDICATES A RECOMMENDED CLEARANCE OF 18" (457mm) FOR PROPER AIR FLOW 2 " (51mm) A SHADED AREA INDICATES A RECOMMENDED CLEARANCE OF 18" (457mm) FOR PROPER AIR FLOW C SHADED AREA INDICATES A RECOMMENDED CLEARANCE OF 24" (610mm) FOR COMPONENT ACCESS AND REMOVAL.
Split System Models Table 26 Cabinet and floor planning dimensional data - prop fan condensing modules, top air discharge Model Numbers 60 Hz 50 Hz PFC067A-_H PFC066A-_H PFH067A-_H PFCZ67A-_L Table 27 Dimensional Data, in. (mm) A B C D Module Weight lb (kg) net 53 (1343) 36-1/4 (918) 38-1/2 (978) 5-1/2 (140) 488 (222) PFCZ66A-_L Piping and electrical connections - top air discharge Model Numbers 60 Hz 50 Hz PFC067A-_H PFC066A-_H PFH067A-_H PFCZ67A-_L Dimensional Data in.
Split System Models Figure 22 Electrical field connections, prop fan condensing module Field-supplied unit disconnect switch TOP AIR DISCHARGE MODELS (23 & 33kW High Ambient and 23 & 33kW Quiet-Line) HORIZONTAL AIR DISCHARGE MODELS Field-supplied 24V NEC Class 2 wiring to evaporator module Single- or 3-phase electric service; not by Liebert SL-11081 PG 8A Field-supplied 24V NEC Class 2 wiring to evaporator module Electric service connection to contactor or terminal block Single- or 3-phase electric s
Split System Models 7.5 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 structure collapse. Can cause equipment damage, injury or death. Before beginning installation, make sure that the supporting roof structure is capable of supporting the weight of the unit(s) and the accessories during installation and service. (See Table 28 - Indoor centrifugal condensing unit.
Split System Models Figure 23 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 7.5.2 Unit base pan (ref) Ducting The total external static pressure for the inlet and outlet ducts, including grille, must not exceed 0.5 inches of H2O. Hood intake dimensions should be the same as the condensing unit duct dimensions.
Split System Models Figure 24 Centrifugal air-cooled condensing unit dimensional data 54 " (1371.6mm) CABINET DIMENSION 32 " (812.8mm) CABINET DIMENSION 1 5/8 " (41.1mm) 15 3/4 " (400mm) 8 15/16 " (227mm) 48 " (1219.2mm) Customer-supplied threaded rods for module support from ceiling (typ. 4) 3 3/8 " (85.7mm) 14 1/2 " (368.3mm) 21 1/4 " (539.8mm) 24 " (610mm) CABINET DIMENSION 1 3/4 " (44.5mm) 33 5/8 " (854.1mm) THREADED ROD CENTERS 1/2" (12.7mm) dia. holes for threaded rods (typ.
Split System Models Figure 25 Centrifugal air-cooled condensing unit dimensional data (con't.) Field-supplied unit disconnect switch when factory unit disconnect switch is not supplied.
Split System Models Figure 26 Split systems general arrangement Hot Gas Bypass Solenoid Valve Liquid Injection Valve Bulb AIR COOLED Service Access Ports Condenser Coil High Pressure Switch Scroll Compressor 1/2" (12.
Split System Models 7.6 Water and Glycol-Cooled Condensing Units For installation guidelines, refer to Installing the Indoor Condensing Unit on page 48. 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. 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 filters in the supply line.
Split System Models Figure 27 Water/glycol-cooled condensing unit dimensions 32 " (812.8mm) CABINET DIMENSION 32 " (812.8mm) CABINET DIMENSION Customer supplied threaded rods for module support from ceiling (typ. 4). Removable Access Panel 24 " (610mm) CABINET DIMENSION 1/2" (12.7mm) dia. holes for module rigging (typ. 2 each end). Hanger Bracket Shaded area indicates a recommended clearance of 30" (762mm) for component access and removal. 33 5/8 " (854.1mm) THREADED ROD CENTERS 29 13/16 " (757.
Split System Models Figure 28 Water/glycol-cooled condensing unit (con't.) Electric service; not by Liebert Field-supplied unit disconnect switch when factory unit disconnect switch is not supplied WATER/GLYCOL Optional factory-installed disconnect switch Field-supplied 24V NEC Class1 wiring to fan/coil unit Field-supplied 24V NEC Class1 wiring to drycooler (glycol-cooled units only) Line-voltage electric power supply conduit entrance Removable Heat rejection connection.
R407C Refrigerant 8.0 R407C REFRIGERANT Table 32 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 kPa °F °C Psig kPa °F °C Psig kPa 0.0 -17.8 18.9 130 35.0 1.7 54.8 378 70.0 21.1 114.9 792 1.0 -17.2 19.6 135 36.0 2.2 56.1 387 72.0 22.2 119.3 822 2.0 -16.7 20.4 141 37.0 2.8 57.5 396 74.0 23.3 124 853 3.0 -16.
R407C Refrigerant Table 33 R407C pressure/temperature chart for subcooling only (liquid measurements) Temperature Pressure Gauge Temperature Pressure Gauge Temperature Pressure Gauge °F °C Psig kPa °F °C Psig kPa °F °C Psig kPa 36.0 2.2 73 500 59.0 15.0 114 786 94.0 34.4 203 1402 37.0 2.8 74 511 60.0 15.6 116 801 96.0 35.6 209 1444 38.0 3.3 76 522 61.0 16.1 118 815 98.0 36.7 216 1488 39.0 3.9 77 533 62.0 16.7 120 830 100.0 37.
Ensuring The High Availability Of Mission-Critical Data And Applications. Emerson Network Power, the global leader in enabling business-critical continuity, ensures network resiliency and adaptability through a family of technologies—including Liebert power and cooling technologies—that protect and support business-critical systems. Liebert solutions employ an adaptive architecture that responds to changes in criticality, density and capacity.
