Emerson Comprehensive Guide to Liebert PFH Prop Fan Condensing Units
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Product Description

1.0PRODUCT DESCRIPTION

1.1Prop Fan Condensing Units

Liebert propeller fan condensing units are available in a range of sizes and configurations to offer flexibility in designing a precision environmental control system. The appropriate propeller fan con- densing unit paired with a corresponding Liebert fan coil evaporator model such as Liebert Data- Mate, Liebert Mini-Mate2 or Liebert Challenger 3000 is an effective solution for your environmental control application requirements.

Split system condensing units are connected to the evaporator unit by two refrigerant lines (four in

8-ton systems) and a low-voltage control cable. The condensing unit requires a separate power source and power disconnect switch.

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

The heart of the refrigeration system is a quiet, high efficiency scroll compressor with internal vibra- tion isolation mountings, pressure safety controls and built-in overload protection. Standard features include crankcase heater, high pressure switch, condenser coil, sight glass, filter drier, hot gas bypass system with liquid quenching valve, direct drive propeller fan and motor, and Liebert Lee-Temp flood- back head pressure control. These models are designed to provide catalog capacity of the appropriate evaporator section up to 95°F (35°C) outside ambient temperature.

1.1.2105°F (41°C) Ambient Models

These models contain similar components to the base models except the coils and fans are sized to provide catalog capacity of the appropriate evaporator section up to 105°F (41°C) outside ambient temperature.

1.1.3Quiet-Line Models

These models contain similar components to the base models except the coils and fans are sized to provide catalog capacity of the appropriate evaporator section up to 95°F (35°C) outside ambient tem- perature with a noise level of less than 58 dBA.

1.2Optional Equipment

1.2.1Coated Coil

This option provides a phenolic coating for the condenser coil (extended lead time is required for this option; consult factory).

1.2.2Pre-Charged Refrigeration Line Sets

For efficient condenser/evaporator connection, factory pre-charged line sets with quick connect fit- tings are available in 15-ft. and 30-ft. (4.5m and 9m) lengths. Each set includes an insulated copper suction line and copper liquid line, both charged with R-407C refrigerant and sealed. Line sets are only available for 1 to 3.5 Ton Units.

1.2.3Refrigerant Line Sweat Adapter Kit

This kit includes the compatible fittings required (two for the insulated suction line and two for the liq- uid line) when using field-supplied interconnecting refrigerant lines instead of the pre-charged line sets.

1.2.4277V Step-Down Transformer

A 37.5A, 277V step-down transformer is available for 1-to 3-Ton 60Hz condensing units needing 277/1/60 input power. Apply this transformer to a 208/230/1/60 condensing unit. The transformer is coated with epoxy and contained in an enclosed, non-ventilated electrical box with adaptable mount- ing brackets.

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Contents Liebert Prop Fan Condensing Unit = 380/415-3ph-50Hz Example PFH037A-PL7Table of Contents Figures Optional Equipment Prop Fan Condensing UnitsLocation Considerations Equipment InspectionNet Weight Dimensional DataModel Numbers Dimensional Data, in. mm Lb. kg 60Hz 50Hz Cabinet and floor planning data, horizontal air dischargeFootprint Dimensions Wall Mounting Electrical and piping connections, horizontal air discharge Piping and Electrical ConnectionsPFH096A- L 152General piping arrangement Top Air Discharge Models Electrical field connections, 1- to 5-ton unitsElectrical field connections, 8-ton units Single-phase, 1-3 ton model schematic, typical Three-phase, 3-5 ton model schematic, typical Three-phase, 8 ton model schematic, typical Piping for Elevation Differences between PFH and Evaporator Piping ConsiderationsEquivalent lengths for various pipe fittings, ft m EvaporatorCondensing Unit Field-Fabricated Line Sets Pre-Charged Line SetsRefrigerant charge in Liebert pre-charged R-407C line sets Line Size Length Charge R-407C Ft. m Lb-oz kgRecommended line sizes, OD Cu Liebert PFH unit charge levels and coupling sizePiping connection sizes and torque Installation of Piping to UnitsLine charges refrigerant per 100 ft m of Type L copper tube Line Size OD Cu Coupling Size Torque, lb-ft. N-mRemove Existing Condensing Unit Filter Drier Selection and InstallationInstall the New Condensing Unit Evaporator Charge R-407C Indoor Unit Models Oz kg General System Charge RequirementsEvaporator Charge Levels Electrical Connections Low-Voltage Control Wire ConnectionsLow-Voltage Control Wire Sizing Nominal Input Voltage-Phase Capacity Electrical Nominal Input Voltage- Phase Capacity ElectricalElectrical Data Electrical data-High ambient models 105F/41C 60HzElectrical data-High ambient models 105F/41C 50Hz Electrical data-Quiet-Line models 95F/35C 60HzElectrical data Quiet-Line models 95F/35C 50Hz Checklist for Completed InstallationLiebert Lee-Temp Flood Back Head Pressure Control CompressorHigh Head Pressure Operation AdjustmentHot Gas Bypass Hot gas bypass diagram Compressor Failure GeneralElectrical Failure-Burnout Mechanical FailureCompressor Replacement Model Numbers 407C 60 Hz 50 Hz Oz kg Field Charge VerificationField verification charge Problem Cause Remedy TroubleshootingWeb Site Monitoring Single-Phase&Three-Phase UPS Environmental SystemsUni Etwo
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