User ManualTable of Contents1.0 Product Description51.1 Prop Fan Condensing Units51.1.1 Base System 95°F (35°C) Ambient Models51.1.2 105°F (41°C) Ambient Models51.1.3 Quiet-Line Models51.2 Optional Equipment51.2.1 Coated Coil51.2.2 Pre-Charged Refrigeration Line Sets51.2.3 Refrigerant Line Sweat Adapter Kit51.2.4 277V Step-Down Transformer52.0 Installation62.1 Equipment Inspection62.2 Location Considerations62.3 Dimensional Data7Figure 1 Dimensions, horizontal air discharge7Table 1 Cabinet and floor planning data, horizontal air discharge7Figure 2 Dimensions, top air discharge8Table 2 Electrical and piping connections, top air discharge8Figure 3 Dimensional data, 277V step-down transformer92.4 Piping and Electrical Connections10Figure 4 Piping and electrical connections, horizontal discharge10Table 3 Electrical and piping connections, horizontal air discharge10Figure 5 Piping and electrical connections, top air discharge11Table 4 Piping and electrical connections, top air discharge11Figure 6 General piping arrangement12Figure 7 Electrical field connections, 1- to 5-ton units13Figure 8 Electrical field connections, 8-ton units14Figure 9 Single-phase, 1-3 ton model schematic, typical15Figure 10 Three-phase, 3-5 ton model schematic, typical16Figure 11 Three-phase, 8 ton model schematic, typical172.5 Piping Considerations182.5.1 Piping for Elevation Differences between PFH and Evaporator18Figure 12 Refrigerant piping diagram19Table 5 Pipe length and condenser elevation relative to evaporator19Table 6 Equivalent lengths for various pipe fittings, ft (m)192.5.2 Pre-Charged Line Sets20Table 7 Refrigerant charge in Liebert pre-charged R-407C line sets202.5.3 Field-Fabricated Line Sets20Table 8 Liebert PFH unit charge levels and coupling size21Table 9 Recommended line sizes, OD Cu212.5.4 Installation of Piping to Units22Table 10 Piping connection sizes and torque22Table 11 Line charges - refrigerant per 100 ft. (30m) of Type L copper tube222.5.5 R-407C PFH Installed as a Replacement Condensing Unit in an R-22 System22Remove Existing Condensing Unit23Filter Drier Selection and Installation23Install the New Condensing Unit232.5.6 General System Charge Requirements24Table 12 Evaporator Charge Levels242.6 Electrical Connections25Table 13 Design refrigerant pressures25Table 14 Application limits252.6.1 Low-Voltage Control Wire Connections252.6.2 Low-Voltage Control Wire Sizing25Table 15 Recommended minimum wire size252.7 Electrical Data26Table 16 Electrical data—Standard sound and ambient models (95°F/35°C) 60Hz26Table 17 Electrical data—High ambient models (105°F/41°C) 60Hz26Table 18 Electrical data—Quiet-Line models (95°F/35°C) 60Hz27Table 19 Electrical data—Standard sound and ambient models (95°F/35°C) 50Hz27Table 20 Electrical data—High ambient models (105°F/41°C) 50Hz27Table 21 Electrical data - Quiet-Line models (95°F/35°C) 50Hz282.8 Checklist for Completed Installation283.0 Operation293.1 Compressor293.2 High Head Pressure293.3 Liebert Lee-Temp Flood Back Head Pressure Control293.4 Hot Gas Bypass303.4.1 Operation303.4.2 Adjustment30Figure 13 Hot gas bypass diagram314.0 Maintenance324.1 General324.2 Compressor Failure324.2.1 Electrical Failure—Burnout324.2.2 Mechanical Failure324.3 Compressor Replacement334.4 Field Charge Verification34Table 22 Field verification charge345.0 Troubleshooting35Table 23 Troubleshooting35Size: 884 KBPages: 36Language: EnglishOpen manual