Trane RT-PRC031-EN manual Mechanical Specifications, General, Electrical System

Page 100

Mechanical Specifications

General

Units shall be specifically designed for outdoor air handler installation on a roof curb and be completely factory assembled and tested, piped, internally wired and shipped in one piece.

Air handlers shall be available as either no cooling or chilled water cooling units. Heat options include natural gas, electric, hot water, steam or no heat. Filters, outside air system, exhaust air system, optional non-fused disconnect switches and all operating and safety controls shall be furnished factory installed.

positive latching at three points. Access doors shall provide a door stop mechanism to latch the door in the open position to prevent unsafe door closure by wind.

Doors of laminated double wall construction with a polyurethane foam core between the exterior sheet metal pane and the interior liner, with an insulating value of R8 shall be provided on the air handler's serviceable compartments such as return/exhaust fan, filters, coil and blank sections. Two single wall doors shall be provided for access to the control panel.

Electrical System

Convenience Outlet

A 15A, 115V Ground Fault Interrupter convenience outlet shall be wired and powered from a factory mounted transformer. A unit mounted, non-fused disconnect with external handle is furnished with the convenience outlet.

Non-Fused Disconnect Switch

An external handle mounted on the control box door shall be provided to disconnect unit power.

All units shall be UL/CSA approved and factory run tested. All units shall also be compliant with IBC Seismic requirements. All units shall have decals and tags to aid in service and indicate caution areas. Electrical diagrams shall be printed on long life water resistant material and shall ship attached to control panel doors.

Casing

Exterior panels shall be zinc coated galvanized steel, phosphatized and painted with a slate grey air-dry finish durable enough to withstand a minimum of 500 hours consecutive salt spray application in accordance with standard ASTM B117. Screws shall be coated with zinc-plus-zinc chromate.

The Air Handler shall be laminated double-wall construction with polyurethane foam core between sheet metal panels and liners. Insulation value shall be R8. All interior surfaces shall be suitable for cleaning per ASHRAE 62. All access doors and panels shall have neoprene gaskets. Unit base shall be watertight with heavy gauge formed load bearing members and curb overhang. Unit lifting lugs shall accept chains or cables for rigging. Lifting lugs shall also serve as unit tie down points.

Access Doors

Access doors shall be hinged with a single, exterior mounted, height and tension adjustable, handle to provide

Blank Sections

A four or eight foot blank section of laminated double wall construction with a polyurethane foam core between the exterior sheet metal panel and the interior liner, with an insulating value of R8 shall be provided with similarly built, hinged, access doors on either side

Airflow Path

Unit shall have downflow discharge conditioned air path or horizontal discharge. Return airflow path shall be either upflow or horizontal.

Burglar Bar

A grate system shall be installed in supply and return air duct connection areas on non-horizontal airflow path units to minimize unwanted intrusion into duct systems.

Belt Guard

Supply and exhaust fans shall have a universal size belt guard to accommodate any applicable drive configuration. The guard totally encloses the drive system and is provided with a two-piece removable front panel for servicing. Return fan guards shall be individually sized with a single piece removable panel for servicing.

Unit Interrupt Rating

A 65000 Amp rating (480V) and 25000 Amp rating (600V) shall be applied to the unit enclosure using a non-fused circuit breaker for disconnect switch purposes. Fan motors and electric heat circuits shall be provided with series rated circuit breakers that will provide the unit rated level of protection. The unit shall be marked with approved UL markings and will adhere to UL 508A regulations.

Marine Lights (Customer Powered)

A 120V master light switch shall be factory installed in the main unit control box for lighting control. The master switch shall be wired into an isolated terminal block with access for customer provided service. Marine light fixtures shall be supplied with 150W incandescent bulbs. Marine light fixtures shall be placed in the Supply Section (2), Fresh Air Section (1), Return Section (1), and Extended Casing Section (1) for units without Heat.

Supply/Exhaust/Return Motors

Supply, exhaust/return motors are either standard efficiency open drip- proof, high efficiency open drip- proof, or high efficiency totally enclosed fan cooled. All supply, exhaust/return motors meet the U.S. Energy Policy Act of 1992 (EPACT).

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RT-PRC031-EN

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Contents IntelliPak II Air Handlers Introduction Table of Contents Standard Features Features and BenefitsControls Cabinet Mechanical Features and Benefits Optional Features Features and Benefits Field Installed Accessories Features SummaryInstallation and Service ReliabilityIntegrated Comfort with Trane Tracer LCI Features and Benefits Application FlexibilitySimplifying the Comfort System Interoperability Features and BenefitsOptimum Building Comfort Control Statitrac Direct Space Building Pressurization Control StatitracSupply Fans with Inlet Guide Vanes Variable Frequency Drives VFDControls Variable Air Volume VAV Only Supply Air Temperature Controls Supply Air Pressure ControlSupply Air Setpoint Reset Controls Variable Air Volume VAV OnlyHeating Zone Temperature Control Controls Constant Volume CV Only Occupied Zone Temperature ControlHeating Gas Heating Two-StageControls Constant Volume CV Only Auto Changeover Unoccupied Zone Temperature ControlCooling and Heating Hot Water or Steam HeatingControls VAV and CV Space Pressure Control StatitracMorning Warm-up Options Emergency OverrideControls VAV and CV Ventilation Override Module VOMGeneric Building Automation System Module Gbas 0-5 vdc Human Interface Panel HIHuman Interface Panel Main Menu Generic Building Automation System Module Gbas 0-10 vdc Chilled Water Coil Freeze StatSteam and Hot Water Coil Freeze Avoidance Night Setback SensorsDry Bulb Temperature Control of Economizer Occupied/Unoccupied input on the RTMTrane Tracer or BAS System Timed Override ActivationHumidification Control LonTalk Building Automation SystemReturn Fan Control TwinningApplications Considerations Exhaust/Return Fan OptionsApplication Recommendations AdvantagesSupply and Return Airflow Configurations Applications ConsiderationsSupply Airflow Configuration Return Airflow ConfigurationWith Bag CartridgeCorrosive Atmospheres Ventilation Override SequencesNatural Gas Heating Considerations Acoustical ConsiderationsUnit Placement Clearance RequirementsProtecting Hydronic Coils From Freezing Duct DesignExternal Piping Enclosure Selection Procedure Selection Procedure Exhaust Fan Motor Sizing Return Fan Motor SizingUnit Electrical Requirements Altitude CorrectionsModel Number Description Digit 7 Chilled Water Coil FIN SeriesModel Number Description Digit 20 System Control SelectionDigit 38 Belt Guards Burglar BARS/MARINE Lights General Data All dimensions in inches General DataGeneral Data Gas Heat Inputs/Input Ranges Economizer Outdoor Air Damper Leakage at rated airflowiInputs MBH Input MBH Range MBH Standard Damper Optional Low Leak DamperPerformance Adjustment Factors Wet Bulb Temperature Btu per PoundEnthalpy of Saturated Air Gas Heating Capacity Altitude Correction FactorsChilled Water Coil Capacities-2 Row 5W Performance Data-Chilled Water Coil CapacitiesDB F WB F Performance Data-Chilled Water Coil Capacities Chilled Water Coil Capacities-4 Row WChilled Water Coil Capacities-6 Row WD Chilled Water Coil Capacities-8 Row WD Supply Fan Performance Standard CFM Casing a Total Static Pressure Std Air1644 Supply Fan w/o IGV Supply Fan Performance Standard CFM -Casing B 9311117 Supply Fan Performance Standard CFM-Casing B Supply Fan Performance Standard CFM Casing C 7491019 Total Static Pressure Std AirPerformance Data Supply Fan with Inlet Guide Vanes Performance Data Supply Fan with Inlet Guide Vanes Supply Fan Performance Standard CFM-Casing a Supply Fan Performance Standard CFM Casing B 1093 1600 RPM 1500 RPM 779 1021 1283 Performance Data-Exhaust Fan Negative Static Pressure Std AirPerformance Data-Exhaust Fan Static PresureInWC237i Wocfm Exhaust Fan Performance Standard CFM-Case C 32 Fan 4150 R P M Performance Data-Return Fan Return Fan Performance Standard CFM-Case a 36.5 FanPerformance Data-Return Fan Return Fan PerformanceReturn Fan Performance Standard CFM-Case B and Case C 40 Fan Return Fan Performance Electric Heat Air Temperature Rise Performance Data-HeatNatural Gas Heating Capacities1 Electric Heat kw RangesPerformance Data-Heat Hot Water Coil Heating Capacities Q/ITDSteam Coil Heating Capacities Q/ITD Properties of SteamChilled Water Coil Airside Pressure Drop in H20 Component Static Pressure Drops in. H2OCartridge Filters Throw Temp Hi Temp Away Prefilter Casing High Low PD Cartridge Bag FiltersFilters Prefilter Supply Air Fan Drive Selections Drive NoHorse Power HP Low Casing Std Exhaust Air Fan Drive SelectionsReturn Air Fan Drive Selections 15 HP 20 HP 25 HP 30 HP 40 HP Drive NoElectrical Service Sizing Electrical DataSet 1. Cooling with Gas Heat Air Handling Units Set 2. Cooling with Electric HeatElectrical Service Sizing Data-Motors Electrical Data Voltage Utilization RangeUnit Voltage Nominal Tons Voltage 460 575 FLA Add 90-150Dimensional Data Unit Top/Front ViewUnit Dimensions In.-One-Piece Unit Dimensional DataReturn Exhaust Unit Height Fan Casing Opening Downflow/Horizontal Airflow Configuration DimensionsSupply Opening Blank Casing Gas Heat Section Electrical Entry Details Piping Chilled Water Piping Locations Minimum Required Clearance Unit Option Selection Door Swing Ft. StandardMinimum Required Clearance Ft Control Exh BoxBlank Casing Section Dimensions Blank Casing SectionCross Member Location Blank Casing Section Field Installed Sensors Variable Air Volume VAV Field Installed Sensors Constant Volume CV Field Installed Sensors VAV and CV Wireless Zone Sensor Wall or Duct Mount CO2 Zone Sensors Approximate Operating Weights Lbs WeightsComponent Weights Lbs Weights Installed Shipping Casing Blank Weight Roof Curb WeightsSize Wt lbs Control Box Main 454 Convenience Outlet Options Options FiltersFresh Air System ControlAgency Approval Miscellaneous OptionsField Installed Accessories Electronic Zone SensorsRoof Curb General Mechanical SpecificationsElectrical System Mechanical Specifications Cooling System Chilled Water Coil Water ValveExternal Piping Enclosure Air Handling SystemMechanical Specifications Filters Mechanical Specifications Exhaust AirNo Relief Standard Percent Modulating Exhaust Fan OptionMechanical Specifications Return Air Fresh AirHeating System CO2 Sensing Page RT-PRC031-EN
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