Trane PKG-PRC002-EN manual Isolation Recommendations, Condenser Water Piping

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Application

Considerations Self-Contained

Equipment Room Construction Options The preferred equipment room wall construction is concrete block. If this is not feasible then a double stud offset wall is suggested (See figure). This removes physical contact that would transmit sound through the equipment room wall to the occupied space. Interweave fiberglass insulation between the wall studs. Use two layers of sheetrock on each side of the wall.

Workmanship details are critical to acoustical performance. Seal all wall and floor penetrations by the ductwork, water piping, and equipment room access doors with a flexible material such as caulk and/or gasketing to stop noise and air leaks.

Double Stud Offset Wall with Interwoven Insulation

Locate the equipment room door away from acoustically sensitive areas like conference rooms. The door should swing out of the equipment room, if possible, so that the low pressure in the equipment room pulls the door in to help maintain a tight seal.

Equipment Options

The flexible horizontal discharge plenum allows multiple tested outlet options. This minimizes the risk of acoustic and/or pressure drop problems by avoiding complex transitions close to the fan discharge.

Static Pressure Versus Acoustics

Design the system to minimize the total static pressure required from the self- contained unit fan.Typically a change in static pressure of only 0.5 inches can reduce NC level by approximately 2 or 3 in the occupied space.

Isolation Recommendations

Unit

The Signature Series unit fan and compressors are internally isolated. Therefore, external isolation is not required. Consult a vibration specialist before considering external or double vibration isolation.

Ductwork

Design duct connections to the unit using a flexible material. Consult local codes for approved flexible duct material to prevent fire hazard potential.

Piping Connections

Rubber isolator connectors are recommended for condenser piping to prevent vibration transmission to or from the building plumbing. The Signature Series self-contained unit is internally isolated and does not require additional isolation. However, ensure proper system vibration isolation design prevents vibration transmission from the building plumbing to the unit. Also be sure to properly isolate the drain line.

Condenser Water Piping

Piping Location and Arrangement Provide at least 24 inches of clearance between the piping and the unit for service. Place the risers away from the side of the unit if possible. Be sure to allow sufficient space for valves and unions between the piping and the self- contained unit. Lay out condenser piping in reverse returns to help balance the system. This is accomplished by equalizing the supply and return pipe length. Multi-story buildings may use a direct return system with balancing valves at each floor. Install all heat exchangers and most cooling tower piping below the sump operating water level to prevent overflow during unit and/ or system shut down.

Free Cooling Opportunities and Alternatives

Free cooling is available with either the airside or waterside economizer options.

Waterside Economizer

The waterside economizer substantially reduces the compressor energy requirements because it uses the cooling water before it enters the condensers. Additional equipment room space is not required since the coils are contained within the overall unit dimensions.

Disadvantages include higher airside pressure drop and a higher head on condenser water pumps.

The coils may be mechanically cleanable (optional) for ease in maintenance versus expensive and difficult chemical cleaning methods.

Airside Economizer

The airside economizer substantially reduces compressor, cooling tower, and condenser water pump energy requirements using outside air for free cooling. It also reduces tower make up water needs and related water treatment.

Disadvantages include building requirements that locate the mechanical room and self-contained unit toward an exterior wall to minimize ductwork , building barometric control, or additional air shafts. Also, airside economizers require additional mechanical room space.

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 Return Air Ductwork Application Considerations Self-ContainedSupply Air Ductwork Equipment Room Location and OrientationCondenser Water Piping Isolation RecommendationsUnit Operating Limits Air Cooled ApplicationConsiderations CondenserSelection Procedure Self-ContainedUnit Capacities Waterside Economizer CapacityUnit Selection Selection Example Design ConditionsModel Number ProcedureDescription Self-Contained Model 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 Performance Chart PD-5. Airside Pressure DropData DropsHeating 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 Data20 Ton Water-CooledTable PD-2. SCWF/SIWF 20 Economizer Full Capacity 8,000 cfm Table PD-3. SCWF/SIWF 20 Economizer Low 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 Heating Coils Self-ContainedTable PD-52. HotWater Heating Capacity Table PD-53. Steam Heating CapacityAvailable Input and Output Points ControlsIntelliPak Unit Features Standard IntelliPak Unit Control FeaturesHuman Interface Panel HI Main menus of the human interface panels areSequence Controls OperationControl Sequences Operation Gbas Analog Inputs Generic Building Automation System Module Gbas OptionGbas Binary Outputs Demand Limiting Binary InputAir-Cooled Condensers Airside OptionsWater Purge Inlet GuideVane ControlUnoccupied ZoneTemperature Control Cooling and Heating Occupied ZoneTemperature ControlHeating Electric Heating Hot Water or SteamSupply Air Temperature Control Unit Sequence Operation Supply Air Setpoint ResetSupply Air Tempering Hot Water and Steam Units Only Controls Options Zone SensorStandard On All Units Model Number Digit 6 = A, BAYSENS017Thermometer 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 Discharge Dimensions English inches Detail B Discharge DimensionsDischarge Dimensions Metric mm Detail a Electrical ConnectionsCcrc Unit Dimensions Dimensions Air-Cooled Weights CondenserWeights DimensionsRefrigerant and Electrical Connections Front View Looking at Control PanelSteam Coil Hot Water CoilPlenum Dimensions English inches DimensionsPlenum Dimensions Metric mm Flexible Horizontal Discharge PlenumAirside EconomizerAirside Economizer Airside Economizer Dimensions Metric mm Airside Economizer Dimensions English inchesAdjustment Field-InstalledZone Sensors Dual Setpoint, Manual/AutomaticZone Temperature Sensor Only Function LightsProgrammable Night-Setback Sensor Service/Code Clearance Requirements ServiceClearances Self-Contained ModelsTop View CCRC/CIRC 20 Top View CCRC/CIRC 35Top View CCRC/CIRC 50 Table W-1. Unit Weights SCWF/SCRF/SIWF/SIRF Dimensions WeightsTable W-2. Unit Weights CCRC/CIRC Table W-3. Variable Frequency Drive WeightsSignature Series Self Contained Units Mechanical Specifications Self-ContainedMechanical Air-CooledSpecifications Condenser Air Volume/Temperature Control Zone Temperature Control Mechanical Specifications OptionsSupply Air Temperature Control with Inlet GuideVanes Self-Contained OptionsStandard Two-Position Damper Interface Comparative Enthalpy ControlAirside Economizer Interface Airside Economizer Interface with Comparative EnthalpyService Valves Water Flow SwitchLow Entering Air Temperature Protection Device Non-fused Disconnect SwitchCoils Protective Coating CabinetCupro-Nickel Condenser Stainless Steel Drain PanLiterature 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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