Manual Do Utilizadoríndice analítico1.0 Introduction71.1 System Descriptions71.1.1 Self Contained Systems7Air-Cooled Models7Water-Cooled Models7Glycol-Cooled Models7GLYCOOL Models71.1.2 Chilled Water Models71.1.3 Split Systems7Prop Fan7Centrifugal Fan7Water/Glycol Condensing Units72.0 Installation82.1 Room Preparation82.2 Equipment Inspection82.3 Location Considerations82.3.1 Remote Sensor Installation Location82.4 Equipment Handling82.4.1 Handling With Skid92.4.2 Removal of Skid9Figure 1 Removing Liebert Challenger ITR from skid9Table 1 Unit shipping weights9Figure 2 Cabinet dimensions10Figure 3 Optional floor stand dimensions112.5 Piping Considerations122.5.1 Drain Line12Table 2 Piping connection size12Figure 4 Piping connections for air-cooled units13Figure 5 Piping connections for split system fan coil units14Figure 6 Piping connections for water/glycol and GLYCOOL units15Figure 7 Piping connections for chilled water self-contained units162.6 Electrical Connections17Figure 8 Electrical connections172.7 Balancing the Air Distribution182.7.1 Ducted Applications182.7.2 Plenum Installation182.8 Checklist for Completed Installation193.0 Air-Cooled Models203.1 Condenser Location203.2 Electrical Connections203.2.1 Line Voltage203.2.2 Low Voltage203.2.3 Lee-Temp/Flood Back Head Pressure Control Condensers20Figure 9 Air-cooled condensers21Table 3 Air-cooled condenser statistics213.3 Refrigerant Piping22Table 4 Recommended line sizes - OD copper (inches)*22Table 5 Equivalent lengths (feet) for various pipe fittings23Table 6 Indoor unit refrigerant charge lb (kg) R22 or R407C (per unit serial tag)23Table 7 Line charges - refrigerant per 100 ft (30 m) of Type “L” copper tube23Table 8 Condenser refrigerant (per serial tag)233.4 Fan Speed Control Systems233.4.1 Materials Supplied233.4.2 Dehydration/Leak Test and Charging Procedures for R22 (standard) or R407C (Optional)24Fan Speed Control Type Condenser24Dehydration/Leak Test24Figure 10 Air-cooled fan speed control general arrangement253.4.3 Charging26Table 9 Refrigerant control settings psi (kPa)263.5 Lee-Temp/Flood Back Head Pressure Control Systems263.5.1 Piping263.5.2 Materials Supplied273.5.3 Dehydration/Leak Test and Charging Procedures for R22 (Standard) or R407C (Optional)27Lee-Temp Control Type Condenser27Dehydration/Leak Test283.5.4 Charging28Table 10 Refrigerant control settings psi (kPa)28Figure 11 Air-cooled, Lee-Temp general arrangement294.0 Water-Cooled Models304.1 Piping Considerations304.2 Condenser30Figure 12 Water-cooled general arrangement314.3 Water Regulating Valve324.3.1 Water Regulating Valve Adjustment32Figure 13 Johnson Controls valve adjustment324.3.2 Water Regulating Valve Manual Flushing324.3.3 Testing Valve Function325.0 Glycol/GLYCOOL-Cooled Models335.1 Drycooler Location335.2 Drycooler Installation335.3 Electrical Connections335.3.1 Line Voltage335.3.2 Low Voltage335.3.3 Pump and Drycooler335.4 Glycol Piping34Table 11 Room dew point temperatures345.4.1 Expansion Tanks, Fluid Relief Valves and Other Devices345.5 Filling Instructions355.5.1 Preparing the System for Filling35Table 12 Indoor unit glycol volume approximate gallons (liters) max.35Table 13 Volume in standard Type “L” copper piping355.5.2 Glycol Solutions36Table 14 Ethylene glycol concentrations365.5.3 Filling the System37Figure 14 Drycoolers and pump packages38Figure 15 Pump packages-expansion tank39Table 15 Mounting hole dimensional data39Table 16 Drycooler data39Table 17 Glycol pump data*39Figure 16 Glycol general arrangement40Figure 17 GLYCOOL general arrangement415.6 Condenser425.7 Glycol Regulating Valve425.7.1 Glycol Regulating Valve Adjustment425.7.2 Testing Valve Function42Table 18 Refrigerant control settings psi (kPa)426.0 Chilled Water Models436.1 Piping Considerations43Figure 18 Chilled water general arrangement - horizontal flow (BR)437.0 Split System Models447.1 Location Considerations447.1.1 Air-Cooled Condensing Units447.1.2 Water/Glycol-Cooled Condensing Units447.2 Electrical Connections447.2.1 Line Voltage447.2.2 Low Voltage447.3 Piping Considerations457.3.1 Refrigerant Loop45Table 19 Unit refrigerant charge46Table 20 Line charges - refrigerant per 100 ft (30 m) of Type “L” copper tube46Table 21 Recommended refrigerant lines (R22 or R407C) sizes OD copper46Table 22 Line coupling sizes46Table 23 Equivalent lengths (feet) for various pipe fittings47Figure 19 Refrigerant piping diagram477.3.2 Quick Connect Fittings487.4 Outdoor Air-Cooled Condensing Units49Figure 20 Outdoor air-cooled condensing unit-horizontal air discharge models49Table 24 Horizontal air discharge cabinet and floor planning dimensional data50Table 25 Horizontal air discharge piping and electrical connection data50Figure 21 Outdoor air-cooled condensing unit-top air discharge models51Table 26 Cabinet and floor planning dimensional data - prop fan condensing modules, top air discharge52Table 27 Piping and electrical connections - top air discharge52Figure 22 Electrical field connections, prop fan condensing module537.5 Centrifugal Air-Cooled Condensing Units547.5.1 Installing the Indoor Condensing Unit54Table 28 Indoor centrifugal condensing unit54Figure 23 Detail of ceiling hanging bracket557.5.2 Ducting55Table 29 Airflow CFM (CMH)55Figure 24 Centrifugal air-cooled condensing unit dimensional data56Figure 25 Centrifugal air-cooled condensing unit dimensional data (con't.)57Figure 26 Split systems general arrangement587.6 Water and Glycol-Cooled Condensing Units597.6.1 Piping Considerations59Table 30 Water and glycol-cooled unit connection sizes59Table 31 Water and glycol-cooled condensing unit data597.6.2 Condenser Water Requirements597.6.3 Regulating Valve Adjustment and Testing597.6.4 Glycol Systems59Figure 27 Water/glycol-cooled condensing unit dimensions60Figure 28 Water/glycol-cooled condensing unit (con't.)618.0 R407C Refrigerant62Table 32 R407C pressure/temperature chart for operation and superheat (discharge/hot gas and suction gas)62Table 33 R407C pressure/temperature chart for subcooling only (liquid measurements)638.1 Calculating Subcooling63Example63Tamanho: 2 MBPáginas: 64Language: EnglishAbrir o manual