Trane RT-PRC010-EN manual Selection Procedure

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Selection Procedure

In order to better illustrate this procedure, the following example is used:

Consider a 60 ton rooftop unit that is to deliver 18,000 actual cfm at 3-inches total static pressure (tsp), 55 F leaving air temperature, at an elevation of 5,000 ft.

1

From Figure PAF-1, the air density ratio is 0.86.

2

Tsp = 3.0-inches / 0.86 = 3.49 inches tsp.

3

From the performance tables: a 60 ton rooftop (without inlet vanes) will deliver 18,000 cfm at 3.49-inches tsp at 906 rpm and 21.25 bhp.

4

The rpm is correct as selected - 906 rpm.

5

Bhp = 21.25 x 0.86 = 18.3 bhp actual.

Compressor MBh, SHR, and kw should be calculated at standard and then converted to actual using the correction factors inTable PAF-2. Apply these factors to the capacities selected at standard cfm so as to correct for the reduced mass flow rate across the condenser.

Heat selections other than gas heat will not be affected by altitude. Nominal gas capacity (output) should be multiplied by the factors given inTable PAF-3 before calculating the heating supply air temperature.

HEATING CAPACITY SELECTION

Step 1 — Determine AirTemperature Entering Heating Module

Mixed air temperature = RADB + % OA (OADB - RADB) = 70 + (0.10) (0 - 70) = 63

F

Supply air fan motor heat temperature rise = 46,000 Btu ÷ (1.085 x 17,500 cfm) = 2.42 F

Air temperature entering heating module = 63.0 + 2.42 = 65.4 F

RT-PRC010-EN

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Contents 20 75Tons 90 130Tons American Standard Inc IntroductionContents Field Installed Accessories Features and BenefitsStandard Features Optional FeaturesReliability Features SummaryInstallation Ease Easy to ServiceSimplifyingThe Comfort System Integrated Comfort System ICSTracer control points for IntelliPak Rooftops FansWith Inlet GuideVanes Features and Benefits Optimum Building Comfort ControlVariable Frequency Drives VFD LowTorqueVariation Proven DesignThroughTesting and ResearchTrane 3-DScroll Compressor Simple Design with 70% Fewer PartsApplication Considerations Barometric Relief Dampers Percent Exhaust SystemSXHF, SFHF, SLHF, Sshf Units Panel C DimensionsHorizontal Discharge 20 75 tons SXHF, SFHF, SLHF, SSHF,Table AC-5 SXHG, SLHG, Sshg Z Dimensions Table AC-4 SXHG, SLHG, Sshg Panel a and B Dimensions2508 17.4 Natural Gas Heating Considerations High Capacity Evaporator CoilCorrosive Atmospheres Ventilation Override SequencesClearance Requirements Acoustical ConsiderationsDuct Design Figure AC-4 Unit PlacementSelection Procedure HotWater Heating DetermineTotalWinter Heating LoadElectric Heating System Gas Heating System Natural GasExhaust Fan Motor Sizing Supply Fan Motor SizingAltitude Corrections Selection Procedure H F C Model Number Description1 1 567 RPM General DataTable GD-1- General Data 20-40Tons 20Ton 25Ton 30Ton 40TonFilters Table GD-2 General Data 50-75Tons Low Ambient Option Min. Outside AirTemp 50Ton 55Ton 60Ton 70Ton 75Ton90Ton 105Ton 115Ton 130Ton Table GD-3 General Data 90-130Tons50% 100% Number/Size/Type 22/FC Table GD-5 ARI Correction Multipliers Table GD-4 ARI Performance DataEER Iplv Table PAF-1 Enthalpy of Saturated AIR Performance Adjustment FactorsPerformance 20Ton Data Performance 25Ton Data Performance 30Ton Data 431 551 Performance 40Ton Data345 452 265 496 183 561 207 451 399 493 302 537 199 429 389 468 292Performance 50Ton Data Performance 55Ton Data Performance 60Ton Data Performance 70Ton Data AmbientTemperature FFlow Performance 75Ton Data Performance 90Ton Data Performance 105Ton Data 115, 130Tons PerformanceTable PD-26 Steam Heating Capacities Q/ITD1 Performance DataTable PD-24 Natural Gas Heating Capacities Table PD-25- Natural Gas Heating CapacitiesTable PD-29- 90To 130-Ton Electric Heat AirTemperature Rise Table PD-28 20 to 75-Tons Electric Heat AirTemperature RiseTable PD-30- Electric Heat KW Ranges Table PD-31- HotWater Heating Capacities Q/ITD1 RPM BHP 20, 25TonsPressure 1409 4000 10371225 1271 136410 HP 1200 RPM 80% 1100 RPM 22.22 6000 883 927 968 1007 1043 10781400 RPM Wocfm 40% 1300 RPM 25 HP Inches 1200 RPM 50% 20 HP 6000 890 933 974 1012 1049 Table PD-35 Supply Fan PerformanceWITH Inletvanes 30Ton1357 20.45 1000 RPM 10 HP Dual 18 X 18 Fans Wocfm Entrance LossesIthout Exhaust 15 HP 1200 RPM Fan Curve Limits30.47 40, 50, 55Tons32.36 40, 50, 55Tons 1161 32.63 Cfm Total Static Pressure Std 250 500 750 000 800 14.86 820Inches w.c 43.85 60, 70, 75Tons60, 70, 75Tons 14000 729 800 RPM 20 HP 70% 15 HP 897 12.88 928 14.40 957 15.80 985 27000 646 690 732 773 808 840 10.71 872904 13.34 28000 667 710 750 791 826 10.15 857 30000 708 749 787 826 10.13 8611515 53.66 30000 1382 43.16 1406 45.18 1428 27000 1363 39.85 1388 41.68 1414 43.54 1437 45.26 146129000 1375 42.04 1398 43.93 1423 45.91 1445 1469 49.80 1491897 13.19 928 14.59 958 16.05 987 27000 695 734 770 805 840904 13.44 935 14.77 28000 718 756 791 825 10.28 858 891 12.90 922 14.26 952 15.65 29000 741 778 812 84537000 1494 157932000 1442 49.55 1464 1496 55.23 1518 57.33 1541 59.53 1565Performance 105,115,130Tons 100 900 RP 1623 76.74 1640 78.9500 R 1500 110030.40 1216 32.05 1240 33.79 1086 23.37 25.3526.95 32.56 1233 34.40 1255 36.26 1277 38.17 46000 1138 26.671641 79.40 1625 76.92 1643 79.30 46000 1624Table PD-44 Component Static Pressure Drops in.W.G Performance 20 -75Tons DataSFHF/G SEHF/G SLHF/G SSHF/G SLHF/G SSHF/G Performance 90-130Tons DataTable PD-45 Component Static Pressure Drops in.W.G SFHF/GTable PD-47 90-130 -Tons Supply Air Fan Drive Selections Table PD-46 20-75 -Tons Supply Air Fan Drive Selections835 39.71 859 BHP RPM885 44.08 910 46.33 934 48.32 Table PD-51 90-130Tons -100% Exhaust Fan Drive Selections Table PD-50 20-75Tons 100% Exhaust Fan Drive SelectionsTable PD-53 90-130 Tons 50% Exhaust Fan Performance Table PD-52 20-75Tons 50% Exhaust Fan Performance18.97 835 19.86 859 20.87 885 22.05 910 23.18 934 24.17 Table PD-54- 50% Exhaust Fan Drive Selections VAV Units ControlsVAV Units Only ZoneTemperature Control Unoccupied Zone Heating and Cooling Supply Air Setpoint ResetReset based on outdoor air temperature Reset based on zone temperatureCV Units Only CV UnitsHeating Gas Heating -Two-Stage HotWater or Steam Heating Unoccupied ZoneTemperature Control Cooling and HeatingGas Heating Modulating Gas Electric HeatingVAV/CV Units Human Interface Panel H.I Exhaust sequence CPurge sequence D Purge with duct pressure control EGeneric Building Automation System odule Gbas Human Interface Panel Main MenuEvaporator Coil Frost Protection Occupied/Unoccupied input on the RTM Occupied/Unoccupied SwitchingDry BulbTemperature Control of Economizer Night Setback SensorsSet 2. Rooftop units with Electric Heat Electrical Service SizingDual Source Power units 200V Electrical Data178 21.8 143 RLA1 LRAFLA Table ED-6 -Voltage Utilization Range48.5 39.0 Motor Hp 48.5 39.0Dimensional 20 75Tons Detail B Covers 40, 60, 70 and 75 TON Units Figure DD-1 20-75Ton Cooling Only Unit Dimensions Sahf20 & 25 5-8 15/ 16 24-1 3 5/ 8 1-7 9 10’-1 7 ’-10 15/ 16 2’-0 ’-6 SahfFigure DD-5 90 130Tons Service Clearance Dimensional 90 130TonsSection B-B RT-PRC010-EN Figure DD-6 90 130Ton Roof Curb DimensionsField Installed Sensors DimensionalConstant Integrated Comfort System Sensors CV and VAV14740 15380 15930 16080 WeightsTableW-1 -Approximate OperatingWeights Lbs./Kg SL/SSOptions OptionsAgency Approval Ambient ControlMiscellaneous Options Roof Curb Electronic Zone SensorsGeneral Mechanical SpecificationsUnit Controller Supply Fan 20 75Ton Units90 130Ton Units ControlsPercent cartridge filter option Permanent cleanable wire mesh optionHigh efficiency throwaway option Percent bag filter optionUltra low-leak economizer dampers option Outside Air GeneralManual outside air option Percent modulating economizer optionHeating System AccessoriesFile Number PL-RT-S*HF/S*HG-20-130TONS-PRC0010-EN-10-2001 Literature Order NumberSupersedes RT-DS-8 05/98 Stocking Location Inland-LaCrosse

RT-PRC010-EN specifications

The Trane RT-PRC010-EN is a prominent model in the line of Trane's packaged rooftop units, designed to offer efficient heating, cooling, and ventilation for commercial applications. Renowned for its robust performance, this unit integrates advanced technologies and superior engineering to meet diverse environmental needs while ensuring energy efficiency and reliability.

One of the key features of the RT-PRC010-EN is its energy-efficient operation. The unit is equipped with variable-speed fans and scroll compressors, which allow for precise control over temperature and airflow. This adaptability not only enhances comfort but also contributes to significant energy savings. The inclusion of high-efficiency cooling coils further optimizes performance, making it an excellent choice for businesses looking to lower their operational costs.

The RT-PRC010-EN model integrates smart controls that allow for seamless integration into building management systems. These controls facilitate real-time monitoring and diagnostics, enabling facility managers to maintain optimum operational efficiency and promptly address any maintenance needs. This technology minimizes downtime and extends the lifecycle of the unit.

Moreover, the unit’s construction is targeted toward resilience and durability. Built with a corrosion-resistant cabinet and extensive insulation, the RT-PRC010-EN can withstand the rigors of various climates, making it suitable for installation across different geographical locations. Its compact design allows for easy installation on rooftops, maximizing space utilization in commercial buildings.

Another standout characteristic is the unit's versatility in application. The RT-PRC010-EN can be tailored to suit a wide range of commercial settings, including retail establishments, educational institutions, and healthcare facilities. Options for various indoor and outdoor configurations enhance its adaptability to specific operational requirements.

In conclusion, the Trane RT-PRC010-EN stands out as an energy-efficient, reliable, and versatile solution for commercial heating and cooling needs. Its advanced features, smart controls, and robust design make it an ideal choice for businesses looking to enhance comfort while minimizing energy expenditures and ensuring operational reliability. Whether dealing with extreme weather conditions or managing indoor air quality concerns, this rooftop unit provides a comprehensive solution tailored to modern commercial requirements.
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