Trane PKG-PRC002-EN Variable Water Flow, Water Flow Switch, Service Valves, Hot Water, Steam

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Mechanical Specifications Options

Waterside Economizer Flow Control Units equipped with a waterside economizer can be set from the human interface panel for variable or constant water flow.

• Constant Water Flow

Two-way modulating control shutoff valves are wired, controlled, and installed in the unit. One valve is located in the economizer’s water inlet, and the other is in the condenser bypass water inlet. When the waterside economizer enables, the two-way valve modulates to maintain the discharge air temperature setpoint. As the economizer valve opens, the condenser bypass valve closes, and vice versa. Full water flow is always maintained through the condensers. Both valves will close in the event of a power failure.

• Variable Water Flow

Two-way modulating control shutoff valves are wired, controlled, and installed in the unit. One valve is located in the economizer’s water inlet, and the other is in the condenser bypass water inlet. When the economizer valve is active, the condenser bypass valve closes. The economizer valve modulates, thus water flow through the unit modulates. If the water is cool enough for economizing, but mechanical cooling is also required, the economizer valve fully opens to establish full water flow through the condensers. Whenever the water is too warm for economizing and there is a call for cooling, the economizer valve fully closes and the bypass valve fully opens, establishing full water flow through the condensers. Full water flow is always maintained through the condensers when mechanical cooling is required. Both valves close whenever cooling is not required and in the event of a power failure.

Water Flow Switch

A water flow switch is factory installed in the condenser water pipe within the unit. Whenever the flow switch detects a water flow loss prior to or during mechanical cooling, compressor operation locks out and a diagnostic code displays. If water flow is restored, the compressor operation automatically restores.

Service Valves

Service valves are factory installed on each circuit before and after the compressor to allow compressor isolation for servicing.

Heating Coils

• Electric Heat

A single stage electric heating coil and controls are factory installed inside the unit casing at the fan discharge. An open construction type coil is provided. Power to the electric heater is factory wired to the unit’s single-point power connection.

• Hot Water

The hot water heating assembly includes the coil and filter section and is factory installed on the unit’s inlet. A three-way modulating valve, actuator, manifold piping, and automatic air vent are also factory installed.The coil is aTrane type WC, constructed of 5/8-inch (16 mm) OD copper tubes arranged in a parallel pattern. The copper tubes are expanded into aluminum fins positioned continuously across the entire coil width, not exceeding 12 fins per inch. The coil casing is 16-gauge steel. Coil performance is rated at a maximum working pressure of 200 psig in accordance with ARI Standard 410. Supply and return water header connections are female tapered NPT and are accessed from the unit’s left side.

• Steam

The steam heating assembly includes the coil and filter section, factory installed on the unit’s inlet. A two-way modulating valve, actuator, and manifold piping are also factory installed. Also, connections are provided for field installing a vacuum breaker.The coil is aTrane type NS, constructed of one inch (25 mm) OD copper tubes arranged in a parallel pattern. The copper tubes are expanded into aluminum fins positioned continuously across the entire coil width, not exceeding 42 fins per foot. The coil casing is 16-gauge steel. Coil performance is rated at a maximum working pressure of 100 psig in accordance with ARI Standard 410. Supply and return steam header connections are female tapered NPT and are accessed from the unit’s left side.

Factory provided controls limit the steam coil leaving air temperature to no more than 105 F (41 C) at all operating conditions.

Single Stage Electric Heat Interface

A heat control module will be factory installed and wired for customer supplied and powered electric heat. This module will allow the unit to stage the customer- provided electric heat. Single stage electric heat control will be accomplished with one dry binary output rated at one amp for 115 VAC.

Hydronic Heating Control Interface A heat control module will be factory installed and wired for customer supplied hydronic heating. This control will be accomplished with a dry binary output, 0- 10 VDC analog control signal.

Time Clock

A factory-installed programmable time clock is wired to the unoccupied mode binary input to provide on/off control. The timer is accessible without opening the control panel door, and is a seven-day type with a maximum of four operations per day. A permanent built-in rechargeable battery pack is provided.

Low Entering Air Temperature Protection Device

A thermostat limit switch is factory mounted on the unit’s entering air side with a capillary tube serpentine across the coil face. If the temperature falls below 35 F (2 C), the fan shuts down and the waterside economizer and/or hydronic heat valve option opens to allow full water flow.The heat output also energizes. A manual reset is required. Note: this option is standard on units with

awaterside economizer or hydronic heat.

Non-fused Disconnect Switch

The unit has a factory mounted non-fused disconnect switch accessible without opening the control panel door.

Dual Point Power Terminal Blocks

Two separate power terminal blocks are available to bring power to the unit; one terminal block provides power to the compressors and the other provides power to the fan motor and controls. Note: a single point power terminal block is standard.

PKG-PRC002-EN

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Contents December Commercial Self-ContainedSignature Series Self-Contained Units IntroductionContents Features and Benefits Optional Features Standard FeaturesIntegrated Comfort System ICS Integrated Self-Contained SystemsProven DesignThroughTesting and Research Trane 3-DScroll CompressorLow Torque Variation 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 Chart PD-21. Waterside Pressure Drop SCWF/SIWF 35 WatersidePressure Drop 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 22 Ton Table PD-5. SCWF/SIWF 22 Economizer Full Capacity 8,800 cfmTable PD-6. SCWF/SIWF 22 Economizer Low 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 Air-Cooled Table PD-45. SCRF/SIRF 25 Gross Cooling Capacity 11,600 cfm Table PD-46. SCRF/SIRF 29 Gross Cooling Capacity 12,800 cfm Table PD-47. SCRF/SIRF 30 Gross Cooling Capacity 14,000 cfm 30 TonTable PD-48. SCRF/SIRF 35 Gross Cooling Capacity 15,200 cfm Table 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 TonPerformance Air-Cooled Data60-TonTable PD-51. SCRF/SIRF 60 Gross Cooling Capacity 29,800 cfm 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 HISequence Controls OperationControl Sequences 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 Temperature Control Unit Sequence Operation Supply Air Setpoint ResetSupply Air Tempering Hot Water and Steam Units Only 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 ProceduresElectrical Data SCWF/SCRF Table ED-6. Single Stage Electric Heat Electrical DataTable ED-7. CCRC/CIRC Condenser 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 EconomizerAirside Economizer Airside Economizer Dimensions Metric mm Airside Economizer Dimensions English inchesDual Setpoint, Manual/Automatic Field-InstalledAdjustment Zone SensorsZone Temperature Sensor Only Function LightsProgrammable Night-Setback Sensor Self-Contained Models ServiceService/Code Clearance Requirements ClearancesTop View CCRC/CIRC 20 Top View CCRC/CIRC 35Top View CCRC/CIRC 50 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

PKG-PRC002-EN specifications

The Trane PKG-PRC002-EN is a groundbreaking packaged rooftop unit designed to meet the diverse needs of commercial and industrial spaces. This model showcases Trane’s commitment to innovation, energy efficiency, and reliability, making it a preferred choice for HVAC professionals and building owners alike.

One of the main features of the PKG-PRC002-EN is its high-efficiency design. This unit leverages advanced technologies to minimize energy consumption while ensuring optimal cooling and heating performance. Its efficient compressor, coupled with enhanced heat exchangers, significantly reduces operating costs and energy bills, aligning with today’s sustainability goals.

The PKG-PRC002-EN features a robust and durable construction, which translates to enhanced longevity and reduced maintenance requirements. Designed for ease of installation, the unit is compact and lightweight, facilitating seamless retrofitting and integration into existing systems. Furthermore, its accessible service panels allow for straightforward maintenance and repairs, thus minimizing downtime and service disruptions.

Equipped with Trane's advanced control technology, the PKG-PRC002-EN offers precise temperature management, ensuring consistent comfort across different zones within a building. The intuitive controls enable users to program schedules and adjust settings based on their specific needs, enhancing comfort while maximizing efficiency.

The model also incorporates advanced filtration options, improving indoor air quality by effectively reducing pollutants and allergens. This focus on health and safety is essential, especially in commercial settings where air quality can significantly impact occupant well-being and productivity.

Another notable characteristic of the PKG-PRC002-EN is its low noise levels during operation, which is essential for maintaining a conducive indoor environment in workplaces, retail spaces, or educational institutions. The unit's design minimizes sound transmission, creating a more pleasant atmosphere for occupants.

In summary, the Trane PKG-PRC002-EN is a highly efficient, reliable, and user-friendly rooftop unit that combines advanced technology with robust construction. Its energy-saving features, superior air quality options, and focus on quiet performance make it an excellent choice for modern commercial HVAC applications, ultimately contributing to sustainable building practices and enhanced occupant comfort.
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