Trane RT-SVX19A-E4 manual Low Ambient Operation, Cooling with an Economizer

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Operation

Low Ambient Operation

During low ambient operation, outside air temperature below 13ºC, the RTRM will cycle the compressor and outdoor fan motor "Off" for approximately three minutes after every 10 minutes of accumulated compressor run time. The supply fan motor (IDM) will continue to operate during this evaporator defrost cycle (EDC) and the compressor and outdoor fan will return to normal operation once the defrost cycle has terminated and the compressor "Off" time delay has been satisfied.

Cooling with an

Economizer

The economizer is utilized to control the zone temperature providing the outside air conditions are suitable.

Outside air is drawn into the unit through modulating dampers. When cooling is required and economizing is possible, the RTRM sends the cooling request to the unit economizer actuator (ECA) to open the economizer damper. The RTRM tries to cool the zone utilizing the economizer to slightly below the zone temperature setpoint. If the mixed air sensor (MAS) senses that the mixed air temperature is below 53ºF, the damper modulates toward the closed position. If the zone temperature continues to rise above the zone temperature setpoint controlband and the economizer damper is full open, the RTRM energizes the compressor contactor (CC1). If the zone temperature continues to rise above the zone temperature setpoint controlband and the economizer damper is fully open, the RTRM energizes the compressor contactor (CC2).

The ECA continues to modulate the economizer damper open/closed to keep the mixed air temperature that is calculated by the RTRM.

If economizing is not possible, the ECA drives the damper to the minimum position setpoint when the supply fan relay (F) is energized and allows mechanical cooling operation. When the unit is equipped with the optional fan failure switch, wired between terminals J7-5 and J7-6 on the RTOM, the RTRM will stop all cooling functions and produce an analog output if the fan failure switch (FFS) does not open within 40 seconds after a request for fan operation. When the system is connected to a remote panel, the "SERVICE" LED will flash when this failure occurs.

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Contents Installation Operation Maintenance Reception in France only Safety recommendationsForeword ReceptionStorage WarrantyMaintenance contract RefrigerantContents Unit Options Rooftop unit Reception of unitsUnit handling Sling lengths and maximum unit weight Roof curb Installation TKD-WKD-YKD accessoriesUnit size Minimum clearances Minimum clearances mm Dimensions/Weights/ClearancesWeigths & center of gravity Figure Weights of Options & accessoriesInstalling the unit on the ground Installing the unitUnit mounting on roof Connection of duct network Downflow discharge units TKD,WKD,YKD Using the rooftop curbHorizontal discharge units TKH,WKH,YKH Condensate drain line connection Condensate drain pipingUnit Gas pipework installationGas leak check procedure Gas burner modelsFilter arrangement Filter installationMotor sheave / Fan speed Supply fan adjustmentFan Speed RPM Standard Drive Belt tensioning To increase airflowTo decrease airflow To increase belt tensionComponent air pressure drops YKD/YKH Pressure drop through accessoriesTKH TKD/TKH Pressure drop through accessoriesAirflow EU2/G2 EU4/G4 100% TKDWKH WKD/WKH Pressure drop through accessoriesFilter 100% WKDYK 155 External static pressure Supply fan performancesYK 175 External static pressure YK 250 External static pressure TK 200 External static pressure TK 175 External static pressureExternal Static Pressure Pa 275 300 TK 250 External static pressure275 300 WK 155 External static pressure TKD/TKH, WKD/WKH units YKD/YKH units Factory supplied Disconnect switch OptionPower wiring Electrical connectionWith Electric heat Electrical data YKD/YKH Unit WiringElectrical Characteristics Unit amps Scroll compressors Compressor electrical phasingOutdoor Fan 155 175 200 250 CompressorElectrical data TKD/TKH Supply fan motor 155 200 Compressor155 175 200 250 Indoor Fan Electrical data WKD/WKH Supply fan motor Electrical data YKD/YKH Supply fan motorElectrical data Combustion Blower Motorr Unit controlled by thermostat Control wiringZone sensor wire size and maximum length Maximum length Zone sensor wire sizeUnit controlled by Tracker supervisor Unit controlled by BASCO2 sensors SpecificationsWall-mounted and duct-mounted CO2 sensors CO2 sensor wire size Power supply requirementsWiring the wall-mounted CO2 sensor Wiring the duct-mounted CO2 sensorMounting the duct-mounted CO2 sensor CO2 sensor maintenanceRemote potentiometer Remote potentiometer dimensionsDuct mounting of fire thermostat Fire thermostatSmoke detector High temperature safety thermostatRemote fault relay Clogged filter detectorCommunication Interfaces Water connection inlet/outlet 1 ¼ ISO R7 Hot water coil Installation and connectionHot water coil Down flow units onlySoft Starter Electric Heater25% manual fresh air hood 25% fresh air hoodDownflow version Barometric reliefOperation with a conventional thermostat OperationConventional thermostat Gas/ Electric, Electric Heat Thermostat signals are as followsConventional thermostat Heat Pump OK to Unoccupied modeCooling/Economizer Operation Cooling/Economizer Operation with Thermostat1,2ECA board LED Setting the economizer or 0-50% motorized hood optionMinimum fresh air adjustment Power-up initialization Test proceduresTest mode procedure at the ReliaTel control board Step Step Test ModeAuto Test Mode Test modesGas valve Unit start-upGas burner data Marking category of the gas section in different countriesOperating pressures Starting the unit in cooling modeFinal installation checklist Check torque of power cables contactEvaporator Fan Operation Cooling without an EconomizerCooling with an Economizer Low Ambient OperationIgnition Module Potentiometer SettingEconomizer Set-Up ReliaTel Control Heating OperationDiagnostics Final installation checklistLED status Air filters End user routine maintenanceRefrigerant charge Condenser coil Service technician maintenanceHot water coil option System Status Checkout Procedure TroubleshootingCooling Failure Service FailureSystem failure Heating FailureFan Failure Switch Resetting Cooling and Ignition LockoutsZone Temperature Sensor ZTS Service Indicator Clogged Filter SwitchThermistor Resistance / Temperature Chart Temperature/resistance coefficient is negativeLiterature order number

RT-SVX19A-E4 specifications

The Trane RT-SVX19A-E4 is a groundbreaking rooftop unit designed for versatile commercial heating and cooling applications. This model stands out for its innovative technology and robust features, making it a preferred choice for many businesses seeking efficient climate control solutions.

One of the primary characteristics of the RT-SVX19A-E4 is its exceptional energy efficiency. It utilizes advanced variable-speed technology, allowing it to adjust the compressor's output based on real-time demand. This not only reduces energy consumption significantly but also provides more accurate temperature control, enhancing overall comfort within the space. The unit is designed with high-efficiency fan motors and optimized heat exchangers, which contribute to its impressive Seasonal Energy Efficiency Ratio (SEER) and Energy Efficiency Ratio (EER) ratings.

The Trane RT-SVX19A-E4 also features a robust and durable design, built to withstand a variety of weather conditions. Its all-weather cabinet protects the internal components from environmental stresses, ensuring longevity and reliable performance. The unit is equipped with corrosion-resistant materials that enhance its durability, making it suitable for both coastal and urban environments.

Another notable feature is its advanced control system. The RT-SVX19A-E4 comes with Trane's IntelliPak controls, which provide users with precise monitoring and management capabilities. This smart control system enables remote access via internet connectivity, allowing facility managers to monitor performance, adjust settings, and diagnose issues in real-time, improving operational efficiency and reducing maintenance costs.

Additionally, the RT-SVX19A-E4 offers a range of customization options. It can be tailored to meet specific operational needs, with various configurations available for air flow, heating, and cooling needs. This flexibility ensures organizations can find a solution that best fits their requirements, whether it be for an office building, retail space, or industrial facility.

In conclusion, the Trane RT-SVX19A-E4 represents a significant advancement in rooftop HVAC technology, combining energy efficiency, durability, and intelligent controls. Its ability to adapt to varying demands, coupled with customizable options, makes it an excellent investment for businesses looking to enhance their indoor climate while minimizing energy expenses.
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