Precision Cooling For Business-Critical Continuity Liebert Challenger™ 3000 Installation Manual - 3 & 5 Tons, 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 5.3.1 5.3.2 5.3.3 5.4 Glycol Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 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 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Removing Challenger from skid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Upflow (BU) 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 Table 34 Unit net weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Piping connection size. . . . . . . . . . . . . . . . . .
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.
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 2.4.2 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. • Once the unit is raised, the skid can be removed. Figure 1 Removing Challenger from skid Remove plywood skirting holding unit and skid in place. Table 1 Raise unit with fork lift or similar machine.
Installation 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) 9 5/8" (244mm) 8 1/2" (216mm) 10 1/4" (260mm) 13" (330mm) 1 5/8" (41mm) 30 1/2" (775mm) 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 18 " (457mm) 32 1/2 " (826mm) Overall Dimension 32 1/2" (826mm)
Installation 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 Shaded area indicates a recommended clearance of 34" (864mm) for component access. Right side access suggested for "GLYCOOL" units. 1" (25.4mm) 30 1/2 " (775mm) 1" (25.
Installation 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 Figure 4 Piping connections for air cooled units DOWNFLOW (BF) MODELS Monitoring Panel Condensate Drain, 3/4” FPT Field pitch minimum of 1/8” (3.2mm) per foot (305mm).
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. UPFLOW (BU) MODELS Humidifier Water SupplyLine 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 Figure 6 Piping connections for water/glycol and GLYCOOL units DOWNFLOW (BF, BE) MODELS Monitoring Panel Condensate Drain 3/4” FPT Field pitch a min. of 1/8" (3.2mm) per ft. (305mm). The drain line must comply with all applicable codes.
Installation Figure 7 Piping connections for chilled water self-contained units Piping outlet locations through the plenum are the same as the unit.
Installation 11
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 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). 15. Heat rejection connection.
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 performance will be compromised. 2.7.
Installation 15
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 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 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.
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.
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 ! CAUTION ! CAUTION ! CAUTION ! CAUTION ! 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. 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 5.4.1 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 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 15 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 Figure 16 Pump packages—expansion tank 30 1/2 " (774.7mm) O 9 " (228.6mm) 1/2" F.P.T. FITTING 2 3/4 " (69.9mm) 2 1/2 " (63.5mm) 1 " (25.4mm) 1 1/2 " (38.1mm) Table 17 6 13/16 " (173mm) 1/2" F.P.T. FITTING 17 1/4 " (438.2mm) 7 " (177.8mm) 4 " (101.6mm) 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 17 Glycol general arrangement Expansion Tank Field Installed at Drycooler Highest Point in System.
Glycol/GLYCOOL Cooled Models Figure 18 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* Glycol Pump Evaporator Coil Isolation Valves* Expansion Valve Fluid Supply from Pump Flow Regulating Valve* Pump Housing Sensing Bulb Sight Glass Hot Gas External Bypass Equalizers Scroll Valve Compressor Filter Drier Hot
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.
Chilled Water Models Figure 20 Chilled water general arrangement - downflow (BF) models Air Flow Bleed Valve Chilled Water Return Valve Actuator AB A Chilled Water Supply Chilled Water Coil 3-Way B Chilled Water Valve Shutoff Valves* 3-WAY VALVE Flow Switch (optional) Air Flow Hose Bibs* Bleed Valve Chilled Water Return Valve Actuator Chilled Water Supply Shutoff Valves* Chilled Water Coil 2-Way Chilled Water Valve Hose Bibs* 2-WAY VALVE SINGLE CIRCUIT SHOWN FACTORY PIPING FIELD PIPING *Comp
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 25 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 0.3 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.
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 22 Outdoor air cooled condensing unit—horizontal air discharge models UNIT DIMENSIONS (See Table 26) C REMOVABLE (RIGHT) 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 26 Horizontal air discharge cabinet and floor planning dimensional data Model Numbers 60 Hz 50 Hz PFC042A-_L PFC041A-_L PFH042A-_L PFC042A-_H Dimensional Data in.
Split System Models Figure 23 Outdoor air cooled condensing unit—top air discharge models GUARD HEIGHT TOP AIR DISCHARGE D RIGHT AIR INTAKE UNIT DIMENSIONS (see Table 28) 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 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 Table 29 Dimensional Data in. (mm) A B C D Module Weight lbs (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 24 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 8A Field-supplied 24V NEC Class 2 wiring to evaporator module Electric service connection to contactor or terminal block Single- or 3-phase electric service; no
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 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.) Be sure to securely anchor the top ends of the suspension rods. Make sure all nuts are tight.
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) 53
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 H2O. Hood intake dimensions should be the same as the condensing unit duct dimensions. If the condensing unit is located close to the outside of the building, rain hoods must be installed. In addition, install a triple layer bird screen over rain hood openings to eliminate the possibility of insects, birds, water, or debris entering the unit.
Split System Models Figure 26 2 and 3 ton centrifugal air cooled condensing unit dimensional data & piping connections Customer-supplied threaded rods for module support from ceiling (typ.
Split System Models Figure 27 3 ton centrifugal air cooled condensing unit (con't.
Split System Models Figure 28 5 ton 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 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.
Split System Models Figure 30 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 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. 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 31 2 and 3 ton water/glycol cooled condensing unit 3 7/8" (98mm) 8 7/8" (225mm) 50 1/4" (1276mm) Overall Dimension 14" (356mm) Overall Cabinet Dimension 48 1/4" (1225mm) Threaded Rod Centers 8 7/16" (214mm) 12" (305mm) Threaded Rod Centers 46 1/2" (1181mm) Cabinet Dimension Customer Supplied Threaded Rods for Module Support from Ceiling (typ. 4).
Split System Models Figure 32 3 ton water/glycol cooled condensing unit (con't.
Split System Models Figure 33 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 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.
Split System Models Figure 34 5 ton water/glycol cooled condensing unit (con't.
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 67
R407C Refrigerant 68
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