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Trane PKG-PRC002-EN manual Application, Air Cooled, Considerations, Condenser

Models: PKG-PRC002-EN

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Application	Air Cooled
Considerations	Condenser

Remote Air-Cooled Condenser

Unit Location

Unobstructed condenser airflow is essential to maintaining capacity and operating efficiency. When determining unit placement, give careful consideration to assure sufficient airflow across the condenser coils. Avoid these two detrimental conditions: warm air recirculation and coil starvation.

Both warm air recirculation and coil starvation cause reductions in unit efficiency and capacity because of the higher head pressure associated with them. In more severe cases, nuisance unit shutdowns will result from excessive head pressures.

Clearance

Ensure vertical condenser air discharge is unobstructed. While it is difficult to predict the degree of warm air recirculation, a unit installed with a ceiling or other obstruction above it will experience a capacity reduction that will reduce the maximum ambient operation limit. Nuisance high head pressure tripouts may also occur.

The coil inlet must also be unobstructed. A unit installed closer than the minimum recommended distance to a wall or other vertical riser will experience a combination of coil starvation and warm air recirculation. This may result in unit capacity and efficiency reductions, as well as possible excessive head pressures. Reference the service clearance section on page 93 for recommended lateral distances.

Ambient Limitations

Standard ambient control allows operation down to 45 F (7.2 C) with cycling of condenser fans. Units with the low ambient option are capable of starting and operating in ambient temperatures down to 0 F (-17.8 C). Optional low ambient units use a condenser fan damper arrangement that controls condenser capacity by modulating damper airflow in response to saturated condenser temperature.

Maximum ambient temperature operation of a standard condenser is 115 F (46.1 C). Operation at design ambient above 115 F can result in excessive head pressures. For applications above 115 F, contact the localTrane sales office.

PKG-PRC002-EN

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Trane PKG-PRC002-EN manual Application, Air Cooled, Considerations, Remote Air-Cooled Condenser

Contents

December Commercial Self-ContainedSignature Series Self-Contained Units IntroductionContents Features and Benefits Optional Features Standard FeaturesIntegrated Comfort System ICS Integrated Self-Contained SystemsLow Torque Variation Proven DesignThroughTesting and ResearchTrane 3-DScroll Compressor Equipment Room Location and Orientation Application Considerations Self-ContainedReturn Air Ductwork Supply Air DuctworkCondenser Water Piping Isolation RecommendationsUnit Operating Limits Condenser ApplicationAir Cooled ConsiderationsWaterside Economizer Capacity Procedure Self-ContainedSelection Unit CapacitiesUnit Selection Selection Example Design ConditionsSelf-Contained Model Number Description ProcedureModel Number DescriptionSelf-Contained Accessory Model Number Description Remote Air-Cooled Condenser Model Number Description Tons General DataTable GD-3. SCWF/SIWF Water-Cooled Self-Contained, 42-80Tons Table GD-4. SCRF/SIRF Air-Cooled Self-Contained SCRF/SIRFCCRC/CIRC General DataTable GD-7. Self-Contained Heating Coil Heating CoilDrops Drops Chart PD-5. Airside Pressure DropPerformance DataHeating Coils Airside Pressure20 to 38 Ton Unit 42 to 80 Ton Unit Discharge PlenumAirside Pressure Airside Economizer with Standard Damper Airside Economizer with Traq Damper Pressure Drop Chart PD-21. Waterside Pressure Drop SCWF/SIWF 35Waterside SCWF/SIWF Table PD-1. CFM Capacity Correction Table Performance Water-Cooled DataTable PD-3. SCWF/SIWF 20 Economizer Low Capacity 8,000 cfm Water-Cooled20 Ton Table PD-2. SCWF/SIWF 20 Economizer Full Capacity 8,000 cfmEntering WaterTemp Entering Air 75 F 85 F 95 F Table PD-6. SCWF/SIWF 22 Economizer Low Capacity 8,800 cfm 22 TonTable PD-5. SCWF/SIWF 22 Economizer Full Capacity 8,800 cfm EnteringWaterTemp Entering Air 75 F 85 F 95 F Table PD-9. SCWF/SIWF 25 Economizer Low Capacity 10,000 cfm 25 TonEntering Water Temp Entering Air 75 F 85 F 95 F Table PD-12. SCWF/SIWF 29 Economizer Low Capacity 11,600 cfm 29 Ton84.2 Table PD-15. SCWF/SIWF 32 Economizer Low Capacity 12,800 cfm 32 Ton94.5 Table PD-18. SCWF/SIWF 35 Economizer Low Capacity 14,000 cfm 35 Ton401 320 Table PD-21. SCWF/SIWF 38 Economizer Low Capacity 15,200 cfm 38 Ton434 373 Table PD-24. SCWF/SIWF 42 Economizer Low Capacity 16,800 cfm 42 Ton403 84.1 Table PD-27. SCWF/SIWF 46 Economizer Low Capacity 18,400 cfm 46 Ton83.8 Table PD-30. SCWF/SIWF 52 Economizer Low Capacity 20,800 cfm 52 Ton596 471 Table PD-33. Scwfsiwf 58 Economizer Low Capacity 23,200 cfm 58 Ton663 571 Table PD-36. SCWF/SIWF 65 Economizer Low Capacity 26,000 cfm 65 TonEntering Water Temp Entering Air Table PD-39. SCWF/SIWF 72 Economizer Low Capacity 28,000 cfm 72 Ton83.7 Table PD-42. SCWF/SIWF 80 Economizer Low Capacity 29,800 cfm 80 Ton891 761 20 Ton Air-CooledTable PD-45. SCRF/SIRF 25 Gross Cooling Capacity 11,600 cfm 25 TonTable PD-46. SCRF/SIRF 29 Gross Cooling Capacity 12,800 cfm 29 TonTable PD-47. SCRF/SIRF 30 Gross Cooling Capacity 14,000 cfm 30 TonTable PD-48. SCRF/SIRF 35 Gross Cooling Capacity 15,200 cfm 35 TonTable PD-49. SCRF/SIRF 40 Gross Cooling Capacity 18,400 cfm 40 TonTable PD-50. SCRF/SIRF 50 Gross Cooling Capacity 23,200 cfm 50 TonTable PD-51. SCRF/SIRF 60 Gross Cooling Capacity 29,800 cfm Performance Air-CooledData60-Ton Table PD-53. Steam Heating Capacity Self-ContainedHeating Coils Table PD-52. HotWater Heating CapacityAvailable Input and Output Points ControlsMain menus of the human interface panels are Standard IntelliPak Unit Control FeaturesIntelliPak Unit Features Human Interface Panel HIControl Sequences Operation SequenceControls Operation Demand Limiting Binary Input Generic Building Automation System Module Gbas OptionGbas Analog Inputs Gbas Binary OutputsInlet GuideVane Control Airside OptionsAir-Cooled Condensers Water PurgeHeating Hot Water or Steam Occupied ZoneTemperature ControlUnoccupied ZoneTemperature Control Cooling and Heating Heating ElectricSupply Air Tempering Hot Water and Steam Units Only Supply Air Temperature Control Unit Sequence OperationSupply Air Setpoint Reset Model Number Digit 6 = A, BAYSENS017 Zone SensorControls Options Standard On All UnitsThermometer to indicate temperature in the zone Setpoint thumbwheel for local setpoint adjustment Electrical Data Selection ProceduresTable ED-7. CCRC/CIRC Condenser Electrical Data Electrical Data SCWF/SCRFTable ED-6. Single Stage Electric Heat Electrical Data Ton Self-Contained Dimensions Self-Contained Weights TonsDimensions Self-Contained Weights 40-80 Ton Detail a Electrical Connections Detail B Discharge DimensionsDischarge Dimensions English inches Discharge Dimensions Metric mmCcrc Unit Dimensions Dimensions Air-Cooled Weights CondenserFront View Looking at Control Panel DimensionsWeights Refrigerant and Electrical ConnectionsSteam Coil Hot Water CoilFlexible Horizontal Discharge Plenum DimensionsPlenum Dimensions English inches Plenum Dimensions Metric mmAirside Economizer AirsideEconomizer Airside Economizer Dimensions Metric mm Airside Economizer Dimensions English inchesDual Setpoint, Manual/Automatic Field-InstalledAdjustment Zone SensorsProgrammable Night-Setback Sensor Zone Temperature Sensor OnlyFunction Lights Self-Contained Models ServiceService/Code Clearance Requirements ClearancesTop View CCRC/CIRC 50 Top View CCRC/CIRC 20Top View CCRC/CIRC 35 Table W-3. Variable Frequency Drive Weights Dimensions WeightsTable W-1. Unit Weights SCWF/SCRF/SIWF/SIRF Table W-2. Unit Weights CCRC/CIRCSignature Series Self Contained Units Mechanical Specifications Self-ContainedMechanical Air-CooledSpecifications Condenser Self-Contained Options Mechanical Specifications OptionsAir Volume/Temperature Control Zone Temperature Control Supply Air Temperature Control with Inlet GuideVanesAirside Economizer Interface with Comparative Enthalpy Comparative Enthalpy ControlStandard Two-Position Damper Interface Airside Economizer InterfaceNon-fused Disconnect Switch Water Flow SwitchService Valves Low Entering Air Temperature Protection DeviceStainless Steel Drain Pan Protective Coating CabinetCoils Cupro-Nickel CondenserLiterature Order Number