Manuali utente per Emerson Figure i

Sommario

• 1.0 Product Description

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  • 1.1 Prop Fan Condensing Units

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    • 1.1.1 Base System 95°F (35°C) Ambient Models

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    • 1.1.2 105°F (41°C) Ambient Models

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    • 1.1.3 Quiet-Line Models

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  • 1.2 Optional Equipment

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    • 1.2.1 Coated Coil

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    • 1.2.2 Pre-Charged Refrigeration Line Sets

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    • 1.2.3 Refrigerant Line Sweat Adapter Kit

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    • 1.2.4 277V Step-Down Transformer

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• 2.0 Installation

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  • 2.1 Equipment Inspection

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  • 2.2 Location Considerations

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  • 2.3 Dimensional Data

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    • Figure 1 Dimensions, horizontal air discharge

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    • Table 1 Cabinet and floor planning data, horizontal air discharge

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    • Figure 2 Dimensions, top air discharge

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    • Table 2 Electrical and piping connections, top air discharge

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    • Figure 3 Dimensional data, 277V step-down transformer

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  • 2.4 Piping and Electrical Connections

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    • Figure 4 Piping and electrical connections, horizontal discharge

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    • Table 3 Electrical and piping connections, horizontal air discharge

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    • Figure 5 Piping and electrical connections, top air discharge

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    • Table 4 Piping and electrical connections, top air discharge

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    • Figure 6 General piping arrangement

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    • Figure 7 Electrical field connections, 1- to 5-ton units

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    • Figure 8 Electrical field connections, 8-ton units

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    • Figure 9 Single-phase, 1-3 ton model schematic, typical

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    • Figure 10 Three-phase, 3-5 ton model schematic, typical

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    • Figure 11 Three-phase, 8 ton model schematic, typical

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  • 2.5 Piping Considerations

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    • 2.5.1 Piping for Elevation Differences between PFH and Evaporator

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      • Figure 12 Refrigerant piping diagram

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      • Table 5 Pipe length and condenser elevation relative to evaporator

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      • Table 6 Equivalent lengths for various pipe fittings, ft (m)

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    • 2.5.2 Pre-Charged Line Sets

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      • Table 7 Refrigerant charge in Liebert pre-charged R-407C line sets

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    • 2.5.3 Field-Fabricated Line Sets

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      • Table 8 Liebert PFH unit charge levels and coupling size

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      • Table 9 Recommended line sizes, OD Cu

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    • 2.5.4 Installation of Piping to Units

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      • Table 10 Piping connection sizes and torque

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      • Table 11 Line charges - refrigerant per 100 ft. (30m) of Type L copper tube

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    • 2.5.5 R-407C PFH Installed as a Replacement Condensing Unit in an R-22 System

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      • Remove Existing Condensing Unit

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      • Filter Drier Selection and Installation

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      • Install the New Condensing Unit

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    • 2.5.6 General System Charge Requirements

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      • Table 12 Evaporator Charge Levels

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  • 2.6 Electrical Connections

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    • Table 13 Design refrigerant pressures

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    • Table 14 Application limits

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    • 2.6.1 Low-Voltage Control Wire Connections

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    • 2.6.2 Low-Voltage Control Wire Sizing

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      • Table 15 Recommended minimum wire size

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  • 2.7 Electrical Data

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    • Table 16 Electrical data—Standard sound and ambient models (95°F/35°C) 60Hz

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    • Table 17 Electrical data—High ambient models (105°F/41°C) 60Hz

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    • Table 18 Electrical data—Quiet-Line models (95°F/35°C) 60Hz

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    • Table 19 Electrical data—Standard sound and ambient models (95°F/35°C) 50Hz

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    • Table 20 Electrical data—High ambient models (105°F/41°C) 50Hz

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    • Table 21 Electrical data - Quiet-Line models (95°F/35°C) 50Hz

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  • 2.8 Checklist for Completed Installation

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• 3.0 Operation

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  • 3.1 Compressor

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  • 3.2 High Head Pressure

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  • 3.3 Liebert Lee-Temp Flood Back Head Pressure Control

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  • 3.4 Hot Gas Bypass

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    • 3.4.1 Operation

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    • 3.4.2 Adjustment

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      • Figure 13 Hot gas bypass diagram

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• 4.0 Maintenance

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  • 4.1 General

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  • 4.2 Compressor Failure

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    • 4.2.1 Electrical Failure—Burnout

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    • 4.2.2 Mechanical Failure

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  • 4.3 Compressor Replacement

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  • 4.4 Field Charge Verification

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    • Table 22 Field verification charge

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• 5.0 Troubleshooting

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  • Table 23 Troubleshooting

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