Precision Cooling For Business-Critical Continuity™ Liebert Challenger™ 3000 with iCOM Installation Manual - 3 & 5 Tons, 50 & 60Hz
TABLE OF CONTENTS IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1.1 System Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1.1 1.1.2 1.1.3 Self-Contained Systems . . . . . . . . . . . . . . . . . . . . . . .
5.0 GLYCOL/GLYCOOL-COOLED MODELS—SELF-CONTAINED COMPRESSOR . . . . . . . . . . . . 41 5.1 5.2 5.3 Drycooler Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Drycooler Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 39 Figure 40 Figure 41 Figure 42 Figure 43 Figure 44 Removing Challenger from skid . . . . . . . . . . . . . . . . . . . . .
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 Table 34 Unit net weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Piping connection size. . . . . . . . . . . . . . . . . .
IMPORTANT SAFETY INSTRUCTIONS 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. Adhere to all warnings, cautions and installation, operating and safety instructions on the unit and in this manual.
! CAUTION Risk of contact with hot surfaces. Can cause injury. The compressor, refrigerant discharge lines, humidifiers and reheats are extremely hot during unit operation. Allow sufficient time for them to cool before working within the unit cabinet. Use extreme caution and wear protective gloves and arm protection when working on or near hot compressors, discharge lines, humidifiers and reheats. NOTICE Risk of leaking water. Can cause equipment and building damage.
Introduction 1.0 INTRODUCTION 1.1 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. The standard upflow configuration is front return. All models require three-phase power.
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.
Installation (Applicable to all Models) 2.0 INSTALLATION (APPLICABLE TO ALL MODELS) 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.
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, avoiding pressing on the top edges of the packaging. • If using a fork lift, make sure the forks, if adjustable, are spread to the widest allowable distance to still fit under the skid. NOTICE Risk of overhead interference. Can cause unit and/or structure damage.
Installation (Applicable to all Models) Figure 2 Upflow (BU) cabinet dimensions 32-1/2" (826mm) 30-1/2" (775mm) A A STD 3 & 5T 11-3/4 (299mm) Hi Static 3T 8 5/8 (219mm) Hi Static 5T 11-3/4 (299mm) UNIT TOP VIEW 9-5/8" (244mm) 8-1/2" (216mm) 10-1/4" (260mm) 13" (330mm) Standard Piping Location 12-1/2" (318mm) Projection of Display Bezel 5/8" (16mm) 5-1/2" (140mm) 32-1/2" (826mm) Overall Dimension 7-1/2" (191mm) Filter Access Through Top 32-1/2" (826mm) Overall Dimension 18" (457mm) 1-5/8"
Installation (Applicable to all Models) Figure 3 Downflow (BF) cabinet dimensions 32-1/2" (826mm) Overall Dimension 32-1/2" (826mm) Overall Dimension 30-1/2" (775mm) Projection of Display Bezel 5/8" (16mm) 30-1/2" (775mm) Optional 1-5/8" (41mm) Flange for Duct or Plenum Connection 76" (1930mm) 1" (25mm) FRONT & SIDES 3/4" (19mm) REAR 1" (25.4mm) 30-1/2" (775mm) 9" (229mm) 30-1/2" (775mm) 4" (102mm) Shaded area indicates a recommended clearance of 34” (864mm) for component access.
Installation (Applicable to all Models) 2.5 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. When installing piping on the subfloor, it is recommended that the pipes be mounted in a horizontal plane rather than stacked one above the other. Whenever possible, the pipes should be run parallel to the air flow.
Installation (Applicable to all Models) Figure 4 Piping connections for air-cooled units - Downflow models Liebert iCOM Control Panel Condensate Drain 3/4" FPT Field-pitch a minimum of 1/8" (3.2mm) per foot (305mm). The drain line must comply with all applicable codes.
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.
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 #6 Quick Connect on Models BF036E/BF035E 1/2" OD CU on Models BF060E/BF059E Condensate Drain 3/4" FPT Field pitch a minimum of 1/8" (3.2mm) per ft. (305mm). The drainline must comply with all applicable codes.
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 1/4" OD CU Hot Water Return 5/8" OD CU (optional) Suction Refrigerant Line #11 Quick Connect on Models BU036E/BU035E 1 1/8" OD CU on Models BU060E/BU059E Condensate Pump Line 1/2" OD CU; used only if optional condensate pump is ordered.
Installation (Applicable to all Models) Figure 8 Piping connections for water/glycol and GLYCOOL units - Downflow models iCOM Control Panel Condenser Supply Line 7/8" OD CU on Models BF046WG/BF045WG 1-1/8" OD CU on Models BF071WG/BF070WG Condensate Drain 3/4" FPT Field pitch a minimum of 1/8" (3.2mm) per ft. (305mm).
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.
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 3/4" FPT Field pitch a minimum of 1/8" (3.2mm) per ft. (305mm). The drain line must comply with all applicable codes.
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. Humidifier Water Supply Line 1/4" OD CU Hot Water Return 5/8" OD CU (optional) Chilled Water Supply Line 1-1/8" OD CU Chilled Water Return Line 1-1/8" OD CU Condensate Pump Line 1/2" OD CU; used only if optional condensate pump is ordered.
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) • Do not supply de-ionized water to the humidifier 2.6 Facility Fluid and Piping Maintenance Facility water and glycol quality remain a requirement throughout the life of the piping system.
Installation (Applicable to all Models) Figure 12 Electrical connections 1 15 2 73 72 71 3 4 8 70 Electrical Handy Box (factory-installed with cover; inside unit on top for upflow and on base for downflow.) 5 7 6 1 Terminal Block - for customer connections 14 14 75 76 94 95 96 97 9 9 10 37C38C37B38B 37 38 24 50 51 55 56 11 77 78 13 91 92 93 1 12 2 3 16 17 18 4 82 83 84 85 88 89 DPN000354 Rev. 01 1. Electric conduit knockouts on top and bottom of electric box.
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. 16. Reheat and Humidifier Lockout.
Installation (Applicable to all Models) 2.8 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: • Select the air supply grilles and perforated panels for the raised floor to ensure minimum loss of pressure in the circuit.
Installation (Applicable to all Models) 2.9 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 unit & outside of the unit. Remove potential of rub-through or chaffing.
Air-Cooled Models—Self-Contained Compressor 3.0 AIR-COOLED MODELS—SELF-CONTAINED COMPRESSOR 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.
Air-Cooled Models—Self-Contained Compressor Figure 14 Air-cooled condensers FAN SPEED AND VFD CONDENSER LIEBERT LEE-TEMP CONDENSER Liebert Lee-Temp heater pad connection box *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—Self-Contained Compressor 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. NOTICE Risk of improper installation. Can cause equipment and property damage.
Air-Cooled Models—Self-Contained Compressor Table 6 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—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 Condenser legs—four with 1-fan, 2-fan and 3-fan models; six with 4-fan models Variable Fan Speed Control Leak Check and Evacuation Procedure Proper leak check and evacu
Air-Cooled Models—Self-Contained Compressor Variable Fan Speed Charging 1. Check unit nameplate for refrigerant type to be used. Unit control configurations differ depending on refrigerant type. 2. Refrigerant charging requires unit operation. Refer to 2.9 - Checklist for Completed Installation. 3. Calculate the amount of charge for the system. Refer to the unit, condenser and refrigerant line charge data in Tables 6, 7, 8 and 9. 4.
Air-Cooled Models—Self-Contained Compressor Figure 15 General arrangement—Air-cooled models with fan speed control Condenser Coil Schrader Valve Inverted Trap * on discharge line to extend above base of coil by a minimum of 7-1/2" (190mm) Fusible Plug Evaporator Coil Traps* every 25 ft. (7.
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 discharge line to extend above base of coil by a minimum of 7-1/2" (190mm) Schrader Valve Fusible Plug Evaporator Coil Traps* every 25 ft. (7.
Air-Cooled Models—Self-Contained Compressor 3.5 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.
Air-Cooled Models—Self-Contained Compressor 6. After four hours, check the pressure readings and, if they have not changed, break vacuum with dry nitrogen. Pull a second and third vacuum to 250 microns or less. Recheck the pressure after two hours. 7. Remove the jumper hose installed previously from between the service valve fitting and the condenser. After completing this step, proceed to Lee-Temp Charging. Lee-Temp Charging 1. Check unit nameplate for refrigerant type to be used.
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 of coil by a minimum of 7-1/2" (190mm) Piping Assembly * * Check Valve Head Pressure Control with Integral Check Valve Traps * Every 25 Ft. (7.6m) of rise on Hot Gas Line only Rotalock Valve * * 1/4" ( 6.
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 of coil by a minimum of 7-1/2" (190mm) Piping Assembly * * Check Valve Head Pressure Control with Integral Check Valve Traps * Every 25 Ft. (7.6m) of rise on Hot Gas Line only Rotalock Valve * * 1/4" ( 6.
Water-Cooled Models—Self-Contained Compressor 4.0 WATER-COOLED MODELS—SELF-CONTAINED COMPRESSOR 4.1 Piping Considerations Manual shutoff 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.
Water-Cooled Models—Self-Contained Compressor Figure 19 General arrangement—Water-cooled models with scroll compressor Evaporator Coil Expansion Valve Sensing Bulb Sight Glass Hot Gas Bypass Valve Filter Dryer Hot Gas Service Valves Bypass Solenoid Valve External Equalizers Scroll Compressor Hot Gas Bypass Tube in Tube Condenser Fluid Supply Fluid To Return Unit From Unit Shutoff* Valves Hose Bibs* Bypass Valve Tube in Tube Condenser 2-Way Water Regulating Valve 3-Way Water Regulating Valve (o
Water-Cooled Models—Self-Contained Compressor Figure 20 General arrangement diagram—Water-cooled models with digital scroll Evaporator Coil Expansion Valve Sensing Bulb Sight Glass External Equalizer Digital Solenoid Valve Service Valves Filter Dryer Digital Compressor Tube in Tube Condenser Fluid Return From Unit Tube in Tube Condenser Fluid Supply To Unit Shutoff* Valves To Liebert iCOM Control 2-Way Motorized Ball Valve Hose Bibs* Field-Supplied Reducers Required on 3- Ton Units 3-Way Mo
Water-Cooled Models—Self-Contained Compressor 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.
Water-Cooled Models—Self-Contained Compressor Figure 22 Metrex Valve adjustment Adjusting collar nut Table 12 Refrigerant control settings psi (kPa) Low Pressure Cut Out Low Pressure Cut In High Pressure 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. 4.
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. Changing the setpoint offset will adjust the pressure thresholds for both circuits.
Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor 5.0 GLYCOL/GLYCOOL-COOLED MODELS—SELF-CONTAINED COMPRESSOR 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—Self-Contained Compressor 5.4 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 checking, fluid chemistry and fluid maintenance. • Follow local piping codes, safety codes. • Qualified personnel must install and inspect system piping.
Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor NOTICE Risk of debris or precipitate clogging pipes. Can cause equipment damage. 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. Fluid-cooled condensers have small internal flow passages.
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 filling the system. A relief valve is a also a necessary piping component. Depending on the complexity of the system, various other devices may be specified.
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 latest Material Safety Data Sheets and ensure that the use you intend can be accomplished safely.
Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Table 16 Ethylene glycol concentrations % Glycol by Volume Freezing Point °F (°C) Apparent Specific Gravity @ 50°F (10°C) 0* 32 (0) 10 25 (-3.9) 20 16 (-8.9) 30 5 (-15.0) 40 -10 (-23.3) 50 -32 (-35.5) 1 1.014 1.028 1.042 1.057 1.071 * A minimal amount of glycol should be considered for inhibitive coil protection. NOTICE Risk of corrosion from water impurities. Can cause equipment damage.
Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Figure 23 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) Provided on dual pump package only See Table 18 for keys to dimensions “A”, “B” and “C”. PUMP PACKAGE MOUNTING ANGLES 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—Self-Contained Compressor Figure 24 Pump packages—expansion tank O 9" (228.6mm) 1/2" FPT Fitting 2-3/4" (69.9mm) 2-1/2" (63.5mm) 1-1/2" (38.1mm) Table 17 7" (177.8mm) 4" (101.6mm) 1" (25.4mm) 1" (25.4mm) 6-13/16" (173mm) 1/2" FPT Fitting 30-1/2 (774.7mm) 17-1/4" (438.2mm) 1-1/2" (38.1mm) 6-1/8" (155.6mm) O 1/2" (12.7mm) 8 holes EXPANSION TANK 8.8 gal. (33.3L) 3" (76.2mm) SL-10065 Pg. 7B SL-10070 Pg.
Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Figure 25 General arrangement—Glycol-cooled models with scroll compressor Expansion Tank Field-Installed at Highest Point in System Drycooler Fill* Electric Box Unions* Air Vents* at Top of Risers Drycooler Coil Fluid Return to Pump Expansion Port* Hose Bibs* Glycol Pump Unions* Isolation Valves* Pressure Port* Evaporator Coil Expansion Valve Fluid Supply from Pump Flow Regulating Valve* Pump Housing Sensing Bulb Sight Glass Hot Gas B
Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Figure 26 General arrangement—Glycol-cooled models with digital scroll Expansion Tank Field-Installed at Highest Point in System.
Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Figure 27 General arrangement—GLYCOOL models with scroll compressor Expansion Tank Field-Installed at Highest Point in System Drycooler Electric Box Fill* Glycol Drycooler Coil Fluid Return to Pump Pressure Port* Unions* Air Vents* at Top of Risers Hose Bib* Pump Housing Evaporator Coil Isolation Valves* Expansion Valve Fluid Supply from Pump Flow Regulating Valve* Pressure Port* Filter Dryer Pump Unions* Sight Glass Sensing Bulb Hot Gas
Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor Figure 28 General arrangement—GLYCOOL models with digital scroll compressor Expansion Tank Field-Installed at Highest Point in System Drycooler Drycooler Elect ric Fill* Coil Box Unions* Hose Bib* Pump Unions* Fluid Return to Pump Pressure Port* Air Vents* at Top of Risers Glycol Pump Housing Evaporat or Coil Isolation Valves* Expansion Valve Fluid Supply from Pump Flow Regulating Valve* Sensing Bulb External Equalizer Pressure Port* Si
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. 5.6 Condenser The condenser is designed to operate in conjunction with a drycooler. The maximum coolant pressure is 350 psig (2413 kPa). 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.
Chilled Water Models Figure 30 Chilled water general arrangement - Downflow (BF) models Air Flow Bleed Valve Chilled Water Return Valve Actuator AB A Chilled Water Supply Shutoff Valves * Chilled Water Coil 3-Way B Chilled Water Valve 3-WAY VALVE Flow Switch (optional) Air Flow Chilled Water Return Hose Bibs * Chilled Water Supply Bleed Valve Valve Actuator Chilled Water Coil Shutoff Valves * 2-Way Chilled Water Valve 2-WAY VALVE FACTORY PIPING FIELD PIPING Hose Bibs * *Components are not s
Split System Models 7.0 SPLIT SYSTEM MODELS Three condensing unit styles are available: two air-cooled and one 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 7.2.2 Low Voltage The control cable between the condensing unit and the evaporator unit is connected between terminals 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. NEC Class 1 wiring is required. Glycol-cooled units also require a two-wire control connection to the drycooler and pump package. 7.3 Piping Considerations 7.3.
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. See Table 21 for field charge required. If field-supplied refrigerant piping is installed, refrigerant must be added to the system.
Split System Models Table 24 Line coupling sizes Model (Tons) 3 5 3 5 Table 25 Line Size OD Cu, in. 3/8 1/2 & 5/8 7/8 1-1/8 Coupling Size #6 #10 #11 #12 Torque lb-ft. 10-12 35-45 35-45 50-65 Equivalent lengths (feet) for various pipe fittings Copper Pipe OD 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.
Split System Models 7.
Split System Models Table 26 Horizontal air discharge cabinet and floor planning dimensional data Model Numbers 60 Hz 50 Hz PFC042A-_L PFC041A-_L PFH042A-_L — PFC042A-_H PFC041A-_H PFH042A-_H — PFCZ42A-_L PFCZ41A-_L PFC067A-_L PFC066A-_L PFH067A-_L — Table 27 Dimensional Data in.
Split System Models Figure 33 Outdoor air-cooled condensing unit—top air discharge models Guard Height Top Air Discharge D Right Air Discharge UNIT DIMENSIONS (see Table 28) B Shaded area indicates a minimum clearance of 18" (457mm) for proper air flow Left Air Intake 2" (51mm) A C Shaded area indicates a minimum clearance of 18" (457mm) for proper air flow Shaded area indicates a minimum clearance of 24" (610mm) for component access and removal Removable (Front) Panel for access to high-voltage
Split System Models Table 28 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 PFCZ66A-_L Table 29 Dimensional Data in.
Split System Models Figure 34 Electrical field connections, prop fan condensing module Field-supplied unit disconnect switch TOP AIR DISCHARGE MODELS (5-Ton High Ambient & 5-Ton 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.
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 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. (See Table 30 - Indoor centrifugal condensing unit.
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 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 36 3-ton centrifugal air-cooled condensing unit dimensional data & piping connections 50-1/4" (1276mm) Overall Dimension Customer-supplied threaded rods for module support from ceiling (typ. 4) 22-3/4" (578mm) Overall Dimension 21-1/2" (546mm) Cabinet Dimension 46-1/2" (1181mm) Cabinet Dimension C 19-1/2" (495mm) Threaded Rod Centers 48-1/4" (1225mm) Threaded Rod Centers 1/2" (13mm) D 20-3/4" (527mm) 22-1/2" (572mm) Cabinet Dimension 20-7/16" (519mm) Coil Inlet Duct Conn.
Split System Models Figure 37 3-ton centrifugal air-cooled condensing unit (con't.
Split System Models Figure 38 5-ton centrifugal air-cooled condensing unit dimensional data 32" (812.8mm) Cabinet Dimension 54" (1371.6mm) 1-5/8" Cabinet (41.1mm) Dimension 48" (1219.2mm) Customer-supplied threaded rods for module support from ceiling (typ. 4) 15-3/4" (400mm) 8-15/16" (227mm) 3-3/8" (85.7mm) 14-1/2" (368.3mm) 24" (610mm) Cabinet Dimension 21-1/4" (539.8mm) 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 39 5-ton centrifugal air-cooled condensing unit dimensional data (con't.
Split System Models Figure 40 Split systems general arrangement Hot-Gas Bypass Solenoid Valve Liquid Injection Valve Bulb AIR COOLED Service Access Ports External Equalizer Filter Dryer Expansion Valve 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 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. 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 7.6.4 Glycol Systems For split system glycol systems, use drycooler and pump data found in 5.0 - Glycol/GLYCOOLCooled Models—Self-Contained Compressor. See Table 18 - Drycooler data. Electrical control interconnect to drycooler is wired from water/glycol condensing unit.
Split System Models Figure 42 3-ton water/glycol-cooled condensing unit (con't.
Split System Models Figure 43 5-ton water/glycol-cooled condensing unit dimensional data 32" (812.8mm) Cabinet Dimension 32" (812.8mm) Cabinet Dimension Customer-supplied threaded rods for module support from ceiling (typ. 4). Removable Access Panel 1/2" (12.7mm) dia. holes for module rigging (typ. 2 each end) 24 " (610mm) Cabinet Dimension Hanger Bracket 33-5/8" Shaded area indicates a 29-13/16 " (854.1mm) recommended clearance of (757.
Split System Models Figure 44 5-ton water/glycol-cooled condensing unit (con't.) Field-supplied unit disconnect switch when factory unit disconnect switch is not suplied Electric service; not by Liebert 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) Line voltage electric power supply conduit voltage Removable Access Panel Heat rejection connection.
R407C Refrigerant 8.0 R407C REFRIGERANT 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 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 34 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.
R407C Refrigerant NOTES 79
R407C Refrigerant 80
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.
