Trane RT-PRC010-EN manual Electrical Data, Electrical Service Sizing, Dual Source Power units 200V

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Electrical Data

Electrical Service Sizing

To correctly size electrical service wiring for your unit, find the appropriate calculations listed below. Each type of unit has its own set of calculations for MCA (Minimum Circuit Ampacity), MOP (Maximum Overcurrent Protection), and RDE (Recommended Dual Element fuse size). Read the load definitions that follow and then find the appropriate set of calculations based on your unit type.

Set 1 is for cooling only and cooling with gas heat units, and set 2 is for cooling with electric heat units.

Load Definitions: (To determine load values, see the Electrical Service Sizing DataTables on the following page.)

LOAD1 = CURRENT OFTHE LARGEST MOTOR (COMPRESSOR OR FAN MOTOR)

LOAD2 = SUM OFTHE CURRENTS OF ALL REMAINING MOTORS

LOAD3 = CURRENT OF ELECTRIC HEATERS

LOAD4 = ANY OTHER LOAD RATED AT 1 AMP OR MORE

Set 1. Cooling Only Rooftop Units and Cooling with Gas Heat Rooftop Units

MCA = (1.25 x LOAD1) + LOAD2 + LOAD4

MOP = (2.25 x LOAD1) + LOAD2 + LOAD4

Select a fuse rating equal to the MOP value. If the MOP value does not equal a standard fuse size as listed in NEC 240-6, select the next lower standard fuse rating. NOTE: If selected MOP is less than the MCA, then reselect the lowest standard maximum fuse size which is equal to or larger than the MCA, provided the reselected fuse size does not exceed 800 amps.

RDE = (1.5 x LOAD1) + LOAD2 + LOAD4

Select a fuse rating equal to the RDE value. If the RDE value does not equal a standard fuse size as listed in NEC 240-6, select the next higher standard fuse rating. NOTE: If the selected RDE is greater than the selected MOP value,

then reselect the RDE value to equal the MOP value.

Set 2. Rooftop units with Electric Heat

a. Single Source Power (380V, 415V, 460V, and 575V)

To arrive at the correct MCA, MOP, and RDE values for these units, you must perform two sets of calculations. First calculate the MCA, MOP, and RDE values as if the unit was in cooling mode (use the equations given in Set 1).Then calculate the MCA, MOP, and RDE values as if the unit were in the heating mode as follows.

(Keep in mind when determining LOADS that the compressors don’t run while the unit is in the heating mode).

For units using heaters less than 50 kw.

MCA = 1.25 x (LOAD1 + LOAD2 + LOAD4) + (1.25 x LOAD3)

For units using heaters equal to or greater than 50 kw.

MCA = 1.25 x (LOAD1 + LOAD2 + LOAD4) + LOAD3

The nameplate MCA value will be the larger of the cooling mode MCA value or the heating mode MCA value calculated above.

MOP = (2.25 x LOAD1) + LOAD2 + LOAD3 + LOAD4

The selection MOP value will be the larger of the cooling mode MOP value or the heating mode MOP value calculated above.

Select a fuse rating equal to the MOP value. If the MOP value does not equal a standard fuse size as listed in NEC 240-6, select the next lower standard fuse rating. NOTE: If selected MOP is less than the MCA, then reselect the lowest standard maximum fuse size which is equal to or larger than the MCA, provided the reselected fuse size does not exceed 800 amps.

RDE = (1.5 x LOAD1) + LOAD2 + LOAD3 + LOAD4

The selection RDE value will be the larger of the cooling mode RDE value or the heating mode RDE value calculated above.

Select a fuse rating equal to the RDE value. If the RDE value does not equal a standard fuse size as listed in NEC 240-6, select the next higher standard fuse rating. NOTE: If the selected RDE is greater than the selected MOP value, then reselect the RDE value to equal the MOP value.

b. Dual Source Power units (200V and 230V)

These units will have two circuit values shown on the nameplate.The first circuit value will be the refrigeration (cooling mode) values calculated per Set 1.The second set of circuit values shown on the nameplate will be for the electric heating circuit as follows.

MCA = (1.25 x LOAD3) MOP = (1.25 x LOAD3)

Select a fuse rating for the electric heating circuit that’s equal to the MOP value obtained in the equation above. If the MOP value does not equal a standard fuse size as listed in NEC 240-6, select the next lower standard fuse rating (see note below for exception).

NOTE: If selected MOP is less than the MCA obtained in the equation above, then reselect the lowest standard maximum fuse size which is equal to or larger than the MCA, provided the reselected fuse size does not exceed 800 amps.

RDE = LOAD3

Select a fuse rating for the electric heating circuit that’s equal to the RDE value. If the RDE value does not equal a standard fuse size as listed in NEC 240-6, select the next higher standard fuse rating. NOTE: If the selected RDE is greater than the selected MOP value, then reselect the RDE value to equal the MOP value.

GENERAL NOTES:

On 20 to 130 ton rooftops, the selected MOP value is stamped in the MOP field on the nameplate.

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 ServiceTracer control points for IntelliPak Rooftops Integrated Comfort System ICSSimplifyingThe Comfort System Variable Frequency Drives VFD Features and Benefits Optimum Building Comfort ControlFansWith Inlet GuideVanes 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,2508 17.4 Table AC-4 SXHG, SLHG, Sshg Panel a and B DimensionsTable AC-5 SXHG, SLHG, Sshg Z Dimensions 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 GasAltitude Corrections Supply Fan Motor SizingExhaust Fan Motor Sizing 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 75Ton50% 100% Number/Size/Type 22/FC Table GD-3 General Data 90-130Tons90Ton 105Ton 115Ton 130Ton EER Iplv Table GD-4 ARI Performance DataTable GD-5 ARI Correction Multipliers 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 Flow AmbientTemperature FPerformance 70Ton Data 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-30- Electric Heat KW Ranges Table PD-28 20 to 75-Tons Electric Heat AirTemperature RiseTable PD-29- 90To 130-Ton Electric Heat AirTemperature Rise 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 1357 20.45 Table PD-35 Supply Fan PerformanceWITH Inletvanes 30Ton6000 890 933 974 1012 1049 1000 RPM 10 HP Dual 18 X 18 Fans Wocfm Entrance LossesIthout Exhaust 15 HP 1200 RPM Fan Curve Limits32.36 40, 50, 55Tons30.47 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 1624SFHF/G SEHF/G SLHF/G SSHF/G Performance 20 -75Tons DataTable PD-44 Component Static Pressure Drops in.W.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 Selections885 44.08 910 46.33 934 48.32 BHP RPM835 39.71 859 Table PD-51 90-130Tons -100% Exhaust Fan Drive Selections Table PD-50 20-75Tons 100% Exhaust Fan Drive Selections18.97 835 19.86 859 20.87 885 22.05 910 23.18 934 24.17 Table PD-52 20-75Tons 50% Exhaust Fan PerformanceTable PD-53 90-130 Tons 50% Exhaust Fan Performance Table PD-54- 50% Exhaust Fan Drive Selections VAV Units Only ControlsVAV Units ZoneTemperature Control Unoccupied Zone Heating and Cooling Supply Air Setpoint ResetReset based on outdoor air temperature Reset based on zone temperatureHeating Gas Heating -Two-Stage CV UnitsCV Units Only 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 EEvaporator Coil Frost Protection Human Interface Panel Main MenuGeneric Building Automation System odule Gbas 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 OptionsMiscellaneous Options Ambient ControlAgency Approval 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 AccessoriesSupersedes RT-DS-8 05/98 Stocking Location Inland-LaCrosse Literature Order NumberFile Number PL-RT-S*HF/S*HG-20-130TONS-PRC0010-EN-10-2001

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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