Trane RT-PRC010-EN manual High Capacity Evaporator Coil, Corrosive Atmospheres

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Application Considerations

High Capacity Evaporator Coil

Rooftops are popular because of their “packaged” nature. Everything needed is contained in one box; mix-matching is neither necessary nor available. With this convenience comes some disadvantages; one is the rooftop’s cooling capacity may not exactly match the building load. It is conceivable that a 50 ton rooftop would need to be used on an application that is 41 tons, simply because the 40 ton rooftop does not meet capacity.

In order to avoid such occurrences, and to more closely match the rooftop’s capacity to the building load, a high capacity evaporator coil option is available on all IntelliPak® Rooftops 20 to 105 tons.These high capacity coils have an increased number of evaporator coil rows as compared to standard and enhanced evaporator tube surfaces, resulting in a higher capacity. Capacity tables for both standard and high capacity coils are available in the cooling data section of this catalog. SeeTable PD-43 for the pressure drops associated with the high capacity coil option.This pressure drop should be added to the total static pressure used to size the supply fan motor.

Low Ambient Operation — Human Interface Recommendations

Who wants to be on a roof at sub-zero temperatures? We can understand a service technician’s reluctance to do this; that’s why we recommend using a remote mounted Human Interface Panel. The service technician can troubleshoot and diagnose in the comfort of a mechanical room.

Corrosive Atmospheres

Trane’s IntelliPak® Rooftops are designed and built to industrial standards and will perform to those standards for an extended period

depending on the hours of use, the quality of maintenance performed, and the regularity of that maintenance. One factor that can have an adverse effect on unit life is its operation in a corrosive environment.

When rooftops are operated in corrosive environments,Trane recommends that copper fins be utilized on the condenser and/or evaporator coil. Because copper is more resistant to corrosion than aluminum, coil life expectancy is greatly increased. Some industry applications expose equipment to corrosive agents that even copper cannot fully resist. For those special applications, a baked phenolic resin coating (i.e. Heresite) is highly desirable. Baked phenolic coatings or copper fins on the condenser and/or evaporator coils are available on Trane’s IntelliPak Rooftops.

Ventilation Override Sequences

One of the benefits of using an exhaust fan rather than a return fan, in addition to the benefits of lower energy usage and improved building pressurization control, is that the rooftop can be used as part of a ventilation override system. Several types of sequences can be easily done when exhaust fans are a part of the rooftop system.

What would initiate the ventilation override control sequence?Typically, a manual switch is used and located near the fire protection control panel.This enables the fire department access to the control for use during or after a fire. It is also possible to initiate the sequence from a field-installed automatic smoke detector. In either case, a contact closure begins the ventilation override control sequence. CAUTION!: The ventilation override system should not be used to signal the presence of smoke caused by a fire.

Trane can provide five (5) different ventilation override sequences on both

CV and VAV IntelliPak® Rooftops. For your convenience the sequences can be factory preset or fully field editable from the Human Interface Panel orTracer®. Any or all five sequences may be “locked” in by the user at the Human Interface Panel.

The user can customize up to five (5) different override sequences for purposes such as smoke control.The following parameters within the unit can be defined for each of the five sequences:

•Supply Fan — on/off

•Inlet GuideVanes — open/closed/ controlling

•Variable Frequency Drives — on (60 Hz)/off (0 Hz)/controlling

•Exhaust Fan — on/off

•Exhaust Dampers — open/closed

•Economizer dampers — open/closed

•Heat — off/controlling (output for)VAV Boxes — open/controlling

Compressors and condenser fans are shut down for anyVentilation Override sequence. Factory preset sequences include unit Off, Exhaust, Purge, Purge with duct pressure control, and Pressurization. Any of the user-defined Ventilation Override sequences can be initiated by closing a field supplied switch or contacts connected to an input on the Ventilation Override Module. If more than one ventilation override sequence is being requested, the sequence with the highest priority is initiated. Refer to the Sequence of Operation provided in the Control section of this catalog for more details on each override sequence.

Natural Gas Heating Considerations

The IntelliPak standard, or limited modulation, gas heat exchangers are not recommended for applications with mixed air conditions entering the heat exchanger below 50°F. Mixed air temperatures below 50°F can cause condensation to form on the heat

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Contents 20 75Tons 90 130Tons American Standard Inc IntroductionContents Standard Features Features and BenefitsOptional Features Field Installed AccessoriesInstallation Ease Features SummaryEasy to Service ReliabilitySimplifyingThe Comfort System Integrated Comfort System ICSTracer control points for IntelliPak Rooftops FansWith Inlet GuideVanes Features and Benefits Optimum Building Comfort ControlVariable Frequency Drives VFD Trane 3-DScroll Compressor Proven DesignThroughTesting and ResearchSimple Design with 70% Fewer Parts LowTorqueVariationApplication Considerations Barometric Relief Dampers Percent Exhaust SystemHorizontal Discharge Panel C Dimensions20 75 tons SXHF, SFHF, SLHF, SSHF, SXHF, SFHF, SLHF, Sshf UnitsTable AC-5 SXHG, SLHG, Sshg Z Dimensions Table AC-4 SXHG, SLHG, Sshg Panel a and B Dimensions2508 17.4 Corrosive Atmospheres High Capacity Evaporator CoilVentilation Override Sequences Natural Gas Heating ConsiderationsClearance Requirements Acoustical ConsiderationsDuct Design Figure AC-4 Unit PlacementSelection Procedure Electric Heating System DetermineTotalWinter Heating LoadGas Heating System Natural Gas HotWater HeatingExhaust Fan Motor Sizing Supply Fan Motor SizingAltitude Corrections Selection Procedure H F C Model Number Description1 1 567 Table GD-1- General Data 20-40Tons General Data20Ton 25Ton 30Ton 40Ton RPMFilters 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 345 452 265 496 183 Performance 40Ton Data561 207 451 399 493 302 537 199 429 389 468 292 431 551Performance 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-24 Natural Gas Heating Capacities Performance DataTable PD-25- Natural Gas Heating Capacities Table PD-26 Steam Heating Capacities Q/ITD1Table 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 1225 1271 4000 10371364 140910 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 Ithout Exhaust Dual 18 X 18 Fans Wocfm Entrance Losses15 HP 1200 RPM Fan Curve Limits 1000 RPM 10 HP30.47 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 904 13.34 28000 667 710 750 791 826 10.15 857 27000 646 690 732 773 808 840 10.71 87230000 708 749 787 826 10.13 861 897 12.88 928 14.40 957 15.80 98529000 1375 42.04 1398 43.93 1423 45.91 1445 27000 1363 39.85 1388 41.68 1414 43.54 1437 45.26 14611469 49.80 1491 1515 53.66 30000 1382 43.16 1406 45.18 1428904 13.44 935 14.77 28000 718 756 791 825 10.28 858 27000 695 734 770 805 840891 12.90 922 14.26 952 15.65 29000 741 778 812 845 897 13.19 928 14.59 958 16.05 98732000 1442 49.55 1464 15791496 55.23 1518 57.33 1541 59.53 1565 37000 1494Performance 105,115,130Tons 00 R 1500 1623 76.74 1640 78.951100 100 900 RP26.95 25.3532.56 1233 34.40 1255 36.26 1277 38.17 46000 1138 26.67 30.40 1216 32.05 1240 33.79 1086 23.371641 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 Table PD-45 Component Static Pressure Drops in.W.G Performance 90-130Tons DataSFHF/G SLHF/G SSHF/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 Reset based on outdoor air temperature Supply Air Setpoint ResetReset based on zone temperature ZoneTemperature Control Unoccupied Zone Heating and CoolingCV Units Only CV UnitsHeating Gas Heating -Two-Stage Gas Heating Modulating Gas Unoccupied ZoneTemperature Control Cooling and HeatingElectric Heating HotWater or Steam HeatingVAV/CV Units Purge sequence D Exhaust sequence CPurge with duct pressure control E Human Interface Panel H.IGeneric Building Automation System odule Gbas Human Interface Panel Main MenuEvaporator Coil Frost Protection Dry BulbTemperature Control of Economizer Occupied/Unoccupied SwitchingNight Setback Sensors Occupied/Unoccupied input on the RTMDual Source Power units 200V Electrical Service SizingElectrical Data Set 2. Rooftop units with Electric Heat178 21.8 143 RLA1 LRA48.5 39.0 Motor Hp Table ED-6 -Voltage Utilization Range48.5 39.0 FLADimensional 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 VAVTableW-1 -Approximate OperatingWeights Lbs./Kg WeightsSL/SS 14740 15380 15930 16080Options OptionsAgency Approval Ambient ControlMiscellaneous Options Roof Curb Electronic Zone SensorsGeneral Mechanical Specifications90 130Ton Units Supply Fan 20 75Ton UnitsControls Unit ControllerHigh efficiency throwaway option Permanent cleanable wire mesh optionPercent bag filter option Percent cartridge filter optionManual outside air option Outside Air GeneralPercent modulating economizer option Ultra low-leak economizer dampers 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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