Trane RT-SVX10C-EN Installation Sensor & Tubing Installation, Units with StatitracTM

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Installation (Continued)

O/A Sensor & Tubing Installation

Figure 3-9

An Outside Air Pressure Sensor is shipped with all units de- signed to operate on variable air volume applications or constant volume units with 100% modulating exhaust w/ Stratitrac.

On VAV systems, a duct pressure transducer (3U60) and the outside air sensor is used to control the discharge duct static pressure to within a customer-specified parameter.

On CV & VAV units equipped with 100% modulating ex- haust w/Stratitrac, a space pressure transducer (3U62) and the outside air sensor is used to control the exhaust fan and dampers to relieve static pressure, to within a customer- specified parameter, within the controlled space. Refer to Figure 3-9 and the following steps to install the sensor and the pneumatic tubing.

1.Remove the O/A pressure sensor kit located inside the filter section. The kit contains the following items;

O/A static pressure sensor with sensor mounting bracket

2' of 3/16" O.D. pneumatic tubing Mounting hardware

2. Using two #10-32 x 1-3/4" screws provided, install the sensor's mounting bracket to the factory installed bracket (near the filter section).

3. Using the #10-32 x 1/2" screws provided, install the O/A static pressure sensor vertically to the sensor bracket.

4. Remove the dust cap from the tubing connector located below the sensor in the vertical support.

5. Attach one end of the 2' x 3/16" O.D. factory provided pneumatic tubing to the sensor's top port, and the other end of the tubing to the connector in the vertical support. Discard any excess tubing.

Units with StatitracTM:

6. Open the filter access door, and locate the DSP control devices illustrated in Figure 3-9. There are three tube connectors mounted on the left of the solenoid and transducers. Connect one end of the field provided 3/16" O.D. pneumatic tubing for the space pressurization con- trol to the bottom fitting. Route the opposite end of the tubing to a suitable location inside the building. This lo- cation should be the largest open area that will not be af- fected by sudden static pressure changes.

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Contents With 3-DTMScroll Compressors ModelsLater Design Sequence Literature Change History Overview of ManualTable of Contents General Information Model Number DescriptionDigit 3 Unit Airflow Fiberglass Wool Hazard IdentificationGeneral Information Commonly Used Acronyms Unit DescriptionGeneral Information Supply AIRVentilation Control Module VCM Design special option only CFMLead-Lag Constant Volume CV Units Variable Air Volume VAV Units Unit Component Layout and Shipwith LocationsGeneral Information Space Temperature Averaging Control Module Locations for SHF 40, 60, 70 & 75 Ton Units Table of Contents Unit Dimensions & Weight Information No Step SurfaceUnit Inspection As soon as the unit arrives at the job site StoragePage Sahf Cooling-Only Units 20 thru 75 Ton Installation Unit Dimensional Data Dimensions SizeUnit Base Dimensional Data Dimensions Electrical Entrance Data Unit DimensionsSEHF, SFHF, SLHF, SSHF, Sxhf Units 20 thru 75 Ton Unit Base Dimensional Data Dimensions Size Unit Dimensions SizeElectrical Entrance Data Unit Dimensions Size Unit Size Furnace Dimensions Note Size/MBH Length HeightSHG Cooling & Heating Units 90 through 130 Ton Sahf SehfSlhf SshfSahf Sshf Sfhf Sxhf Sehg Sfhg Sxhg HF/G Roof Curb and DuctworkSE,SL Installation Unit Rigging & Placement If a Trane Curb Accessory Kit is not usedHeavy Objects Pitch Pocket LocationTypical Unit Rigging Unit Base & Roof Curb Section Main Electrical Power Requirements Installation Field Installed Control WiringGeneral Unit Requirements Requirements for Electric Heat UnitsInstallation Condensate Drain Connections Page Removing Supply and Exhaust Fan Shipping Channels Motors 5Hp Page Installation Sensor & Tubing Installation Units with StatitracTMGas Heat Units SFH Connecting the Gas Supply Line to the Furnace Gas TrainHazardous Gases and Flammable Vapors 350 MBH 850 MBH Flue Assembly Installation Flue Assembly1000 MBH Modulating 500 MBH 1000 MBH Hot Water Heat Units SLHSteam Heat Units SSH SSHG-90Through 130 Ton units Page Use Copper Conductors Only Hazardous VoltageLive Electrical Components Typical Field Power Wiring 20 thru 75 Ton Page Supply Fan Motor FLA ea Horsepower Condenser Fans Total FLAExhaust Fan Motor FLAUnit Tonnage No. of Compressors Tonnage Type Designation CombustionBlower Motor Sfhf Only Single Source Power 380V, 415V, 460V, Load Definitions Load= Current of the Largest Motor Compressor or FAN Motor On the NextPower Wire Sizing and Protection Device Equations Disconnect Switch Sizing DSSDual Source Power units 200V MCA = 1.25 x Load MOP = 1.25 x LoadConstant Volume System Controls Controls using 24 VACInstallation Controls using DC Analog Input/Outputs Variable Air Volume System Controls Constant Volume or Variable Air Volume System ControlsPressurize DepressurizePurge FireRefer to Wiring Notes on 16A16B Page 17A 17B VAV Setpoint Input VoltageTable of Contents Cooling Sequence of Operation Sequence of OperationGas Heating Sequence of Operation Fenwal Ignition SystemUnit Start-Up Propane GasFull and Limited Modulating Gas Furnace Modulating Gas Sequence of OperationFlame Failure Freeze Protection Electric Heat Sequence of OperationUnit Start-Up Wet Heat Sequence of Operation Electrical Phasing Unit PowerCompressor Damage Voltage Imbalance Voltage Supply and Voltage ImbalanceVoltage Supply Service Test Guide for Component Operation IGVSupply FAN System Airflow Measurements Constant Volume Systems Rotating ComponentsVerifying Proper Fan Rotation If all of the fans are rotating backwardsCondenser Fan Location with Human Interface Designator Variable Air Volume Systems Exhaust Airflow Measurement TraqTM Sensor Airflow MeasurementOptional with all Units Optional with all units equipped with an economizer20 & 25 Ton Supply Fan Performance without Inlet Guide Vanes Ton Supply Fan Performance without Inlet Guide VanesWocfm 1200 RPM 40 HP 40% 300 RP Standard Evaporator Coil 20000 30000 40000 50000 60000 Drop 20 & 25 Ton Supply Fan Performance with Inlet Guide Vanes Ton Supply Fan Performance with Inlet Guide Vanes15 HP 900 RPM 80% 10 HP RPM Through 75 Ton Component Static Pressure Drops Inches W.C AIRCFM RPM BHP STDAIR HF-C20 000 HF-C25 00010,000 HF-C30 000RPM BHP BHP RPM BHP RPM BHP AIR RPM BHPEconomizer Damper Adjustment To Adjust the Fresh Air Damper TravelExhaust Air Dampers Fresh Air & Return Air Damper OperationDamper Travel Adjustment Position Connecting Rod Crank Arm HoleConfiguration Ton UnitsFresh Air & Return Air Linkage Adjustment Compressor Start-UpAll Systems 70 & 105 TonCompressor Operational Sounds Refrigerant ChargingAt Shutdown At Low Ambient Start-UpCompressor Locations Cooling Cycle Pressure Curve 340 320 Full Load 380 360 340 OD Ambient Full Load 380 360 340 OD Ambient 320 240 220 380 360 OD Ambient Low Ambient Dampers Thermostatic Expansion ValvesCharging by Subcooling Electric, Steam and Hot Water Start-Up Gas Furnace Start-UpHigh-Fire Adjustment Combustion Air Adjustment O2Low-Fire Adjustment 500 MBH, 850 & 1,000 MBH only Two Stage Gas FurnaceCO2 Pressure MBHFiring Manifold Unit control Full Modulating Gas FurnaceHeat Exchanger Modulating Gas Regulator Legend Limited Modulating Gas Furnace Unit Start-UpModulating Gas Regulator Unit Start-Up Final Unit Checkout Typical Gas FurnaceService & Maintenance Service & Maintenance Unit Internal Fuse Replacement Data & VFD Factory SettingsUnit Model Box-type Note Qty Qty Size of eachWet Heat Coil Fin Data Total Coil Fins Model TypeService & Maintenance Fan Belt Adjustment Gripbelts Gripnotch Cross Small P.D Section Range Min Max Scroll Compressor ReplacementSuction Line Filter/Drier Installation Supply and Exhaust Fan VFD Programming Parameters Hazardous Voltage! w/CapacitorsVFD Programming Parameters Cooling Season Service & Maintenance Monthly MaintenanceFilters Coil Cleaning Heating SeasonSteam or Hot Water Coils Coil CleanersContains Refrigerant Final Process Index See Figure Gate type valve 36-37 See -12 Figure See VOM Contacts -16 Figure Warranty and Liability Clause Equipment Damage From Ultraviolet UV Lights115 116