Page 2 - General information; Foreword
General information RT-SVX20A-E4 2 Foreword These instructions are given as aguide to good practice in theinstallation, start-up, operation, andmaintenance by the user, of TraneTSD/TSH, WSKD/WSH and YSD/YSHunits. They do not contain fullservice procedures necessary forthe continued successful operat...
Page 3 - Reception in France only:
General information 3 RT-SVX20A-E4 Reception On arrival, inspect the unit beforesigning the delivery note. In case ofvisible damage: The consignee (orthe site representative) must specifyany damage on the delivery note,legibly sign and date the deliverynote, and the truck driver mustcountersign it. ...
Page 4 - Contents
Contents RT-SVX20A-E4 4 General information 2 Foreword 2 Warnings and Cautions 2 Reception 3 Warranty 3 Refrigerant 3 Maintenance contract 3 Storage 3 Training 3 Installation 6 Reception of units 6 Roof curb installation 6 Dimensions/Weights/Clearances 7 Installing the unit 9 Connection of duct netw...
Page 5 - Unit Options
Contents 5 RT-SVX20A-E4 Unit Options 44 Hot water coil 44 Electric Heater 45 Soft Starter 45 0 - 25% fresh air hood 46 Barometric relief 47 Operation 48 Operation with a conventional thermostat 48 Setting the economizer 50 Test procedures 52 Test modes 53 Unit Start-up 54 Cooling without an Economiz...
Page 6 - Installation; Reception of units; Rooftop unit; Use a lifting beam correctly; Unit handling; = Remove 2 fork lift brackets
Installation RT-SVX20A-E4 6 General information: Theinstallation must conform to alllocal standards and regulations. Reception of units Rooftop unit There are two ways to handle theunit:1. Use the openings in the base to handle the machine using aforklift, in accordance withapplicable safety regulat...
Page 9 - Installing the unit; Discharge Conversion; Apply gasket to the return duct; Unit mounting on roof
Installation 9 RT-SVX20A-E4 Installing the unit Discharge Conversion If a unit is to be converted toVertical discharge, a panel must beacquired from Trane. If a unit is to be converted toHorizontal discharge, the followingconversion must be performed:1. Remove the return and supply duct covers. 2. A...
Page 10 - Installing the unit on the ground; . Installation of a section of
Installation RT-SVX20A-E4 10 Installing the unit on the ground To install the unit on the ground, itsbase must be level and supportedsecurely. For horizontal dischargeunits, a support is required such asa metal or concrete slab whoseheight must be determinedaccording to the amount of snowcover, to p...
Page 12 - Condensate drain piping
Installation RT-SVX20A-E4 12 Condensate drain piping A 3/4" condensate drain connectionwith P-trap is provided. Follow localcodes and standard piping practiceswhen running the drain line. Installa trap and be sure to fill with waterbefore starting the unit. Pitch theline downward, away from the ...
Page 13 - Gas pipework installation; close valve 4 and open valve 2
Installation 13 RT-SVX20A-E4 Gas pipework installation The installation must conform to allstandards and regulations. The gas supply pipework and gasstop valve to be installed near theunit must be sized so as to ensurethe gas pressure is sufficient at theunit inlet when operating at fullload. CAUTIO...
Page 14 - Filter installation; Supply fan adjustment; • Obtain the design airflow rate
Installation RT-SVX20A-E4 14 Filter installation To gain access to filters, remove thesupply fan access panel ondownflow units and the filter accesspanel on the end for horizontalunits. Number and size of filters isdetermined by size andconfiguration of the unit. Ifdisposable filters were chosen as ...
Page 15 - To adjust belt
Installation 15 RT-SVX20A-E4 To adjust belt The fan belts must be inspectedperiodically to assure proper unitoperation. Replacement isnecessary if the belts appear frayedor worn. Units with dual belts require amatched set of belts to ensure equalbelt length. When removing or installing thenew belts,...
Page 16 - Component air pressure drops
Component air pressure drops Table 9 - Pressure drop through accessories Unit size Airflow (m 3 /h) Filter EU2/G2 Filter EU4/G4 Economizer 100% outside air Electric heater Hot water coil 060 3060 31 50 38 17 49 3400 38 55 46 21 55 3740 46 61 55 25 62 4080 55 66 64 30 68 072 3670 13 37 27 7 46 4080 1...
Page 17 - Supply fan performances
Installation 17 RT-SVX20A-E4 Standard drive Oversize drive Note : Data includes pressure drops for standard filters and wet coils Table 10 - TSD 060 Available static pressure External Static Pressure (Pa) 25 50 75 100 125 150 175 200 225 250 275 300 m 3 /h RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW R...
Page 30 - Electrical connection; Over current protection; The machines are designed for a; Compressor electrical phasing
Installation RT-SVX20A-E4 30 Electrical connection The electric panel is located in theunit compressor section. Removethe compressor access panel. Theunit is designed to run with 400 V+/- 5%/50 Hz/ 3 ph. Factory supplied disconnect switch(option) The disconnect switch is factorymounted. It is locate...
Page 33 - Controls; Control wiring; Unit controlled by thermostat
Controls 33 RT-SVX20A-E4 Control wiring The control circuit is 24 V AC. Unitincludes a 400/24 V transformer. WARNING! The unit disconnectswitch must be opened and lockedopen. Risk of injury andelectrocution. Figure 14 - Thermostat wiring J7 J6 CAUTION! The unit 24 V transformermust not be used to po...
Page 34 - Unit controlled by BAS; communication
Controls RT-SVX20A-E4 34 Trane THS01,THS02, THP01 andTHP02 Thermostats are directlyconnected to RTRM board(J7 connector). Trane THS03 and THP03 thermostatsare directly connected to RTRMboard (J6 connector). Install the electrical link between thethermostat (thermostat terminalstrip) and the unit (J6...
Page 35 - The CO; CO; sensors
Controls 35 RT-SVX20A-E4 The CO 2 sensor is designed to operate with a nominal 24 Vacsupply. The power supply shouldmaintain the voltage between 20 to26 Vac. Table 41 - CO 2 sensor wire size Wire size (mm²) Maximum wire lengh (m) 0,25 50 0,5 100 1 200 Table 40 - Specifications Wall-mounted Duct-moun...
Page 36 - Wiring the wall-mounted CO; signal wire to terminal V.
Controls RT-SVX20A-E4 36 Wiring the wall-mounted CO 2 sensor DVC setpoint potentiometer oneconomizer module can be adjustedas follows: 0% - 500ppm, 50% - 1000 ppm, 100% - 1500ppm The outside air damper willmodulate from minimum positionsetting to up to 100% whileattempting to maintain the CO 2 setpo...
Page 37 - room to mount the CO
Controls 37 RT-SVX20A-E4 Mounting the wall-mounted sensor1. Select a proper location in the room to mount the CO 2 sensor. Look for an interior wall withgood air circulation,approximately 1.4 m from thefloor. 2. Remove the back plate from the sensor and thread the powerwires and output signal wireth...
Page 38 - Mounting the duct-mounted CO
Controls RT-SVX20A-E4 38 Mounting the duct-mounted CO 2 sensor1. Select a proper location on the duct to mount the CO 2 sensor. 2. Drill a 22-25 mm hole in the mounting surface for sensorinsertion (Figure 19). 3. Attach the mounting plate to the duct wall with four screws. 4. Insert the sensor throu...
Page 39 - Remote potentiometer
Controls 39 RT-SVX20A-E4 Remote potentiometer To install the remote potentiometer,cut the jumper WL on theeconomizer ECA board, and connectthe wires to J11 and J12. Note: This potentiometer allows toadjust the permanent fresh airintake from 0 to 50%. 0 W corresponds to closed fresh airdamper. 270 W ...
Page 40 - Fire thermostat
Controls RT-SVX20A-E4 40 Fire thermostat There are two sensors in the firethermostat Kit: Sensor X13100040-01 is factory-set to open at 57°C,Sensor X13100040-02 is set to openat 115°C. Sensors are mounted directly in theductwork. They should be installedwhere elements can respondquickly to air tempe...
Page 41 - Clogged filter detector; Smoke detector
Controls 41 RT-SVX20A-E4 Clogged filter detector This device is mounted in theindoor fan section. The sensormeasures the difference in pressurebefore and after the filter section.The information is sent to the THP03thermostat, to a Tracker™ or to aBMS. The setting range is 40 to300 Pa. Figure 25- Cl...
Page 42 - Thermostats; thermostats are available:
Controls RT-SVX20A-E4 42 Thermostats 6 thermostats are available: THS01/THP01, THS02/THP02 andTHS03/THP03. "THS" are non programmablethermostats, "THP" areprogrammable. 01 and 02 series are conventionalthermostat, 03 series are dedicatedto the controller. Table 42 - Thermostat featur...
Page 43 - Other accessories available; Communication Interfaces; Network at the unit level.; LonTalk; . Space Comfort Controller
Controls 43 RT-SVX20A-E4 Other accessories available Remote temperature sensor to beused with THS/THP 01-02. TZS01: Remote room temperaturesensor to be used with THS/THP 03,Tracker or Varitrac systems. DTS: Duct temperature sensor to beused with THS/THP 03. TZS02: Remote room temperaturesensor with ...
Page 44 - Hot water coil; Installation and connection
Unit Options RT-SVX20A-E4 44 Hot water coil (Down flow units only) In order to prevent water to freezeup in the coil during unoccupiedperiod or shutdown limited period,a thermostat opens when there is arisk of freeze-up. The services of awater treatment specialist arerecommended if water used cancau...
Page 45 - Electric Heater
Unit Options 45 RT-SVX20A-E4 Electric Heater Electric heaters are fitted on the fandischarge. Heaters have two heating stagesand provided with two types ofoverheat thermostats:• Automatic reset thermostatswhich stop the electric heaterwhen the air temperature rises to76°C. Automatic reset at 60°C. N...
Page 47 - Barometric relief
Unit Options 47 RT-SVX20A-E4 Barometric relief The barometric relief allows tominimize overpressure in thebuilding caused by the introductionof fresh air. This option is typicallyinstalled when fresh air intake isbelow 25% of the nominal air flowand when the return air pressuredrop is below 25Pa. Th...
Page 48 - Operation; COM
Operation RT-SVX20A-E4 48 Operation with aconventional thermostat The ReliaTel module hasconventional thermostatconnections as well as Zone SensorModule connections. When aconventional thermostat iscontrolling the unit, operationdiffers as follows:• Supply Air Tempering feature isnot available. If o...
Page 49 - Thermostat signals are as follows:; R 24VAC power to thermostat
Operation 49 RT-SVX20A-E4 Logic is also provided to causeappropriate unit functions wheninappropriate thermostat signals areprovided. Simultaneous calls forheating and cooling will be ignored,and the fan will be turned on with acall for heating or cooling even ifthe fan request is not detected. If t...
Page 50 - Unoccupied mode
Operation RT-SVX20A-E4 50 Unoccupied mode If the thermostat being used isprogrammable, it will have its ownstrategy for unoccupied mode andwill control the unit directly. If amechanical thermostat is beingused, a field applied time clock withrelay contacts connected to J6-11and J6-12 can initiate an...
Page 52 - Test procedures; Supply fan rotation speed is set; Power-up initialization
Operation RT-SVX20A-E4 52 Test procedures Operating checklist before start-up• Unit is level, with sufficientclearance all round • Duct network is correctly sizedaccording to the unitconfiguration, insulated, andwater-tight • Condensate drainage line iscorrectly sized, equipped with atrap, and slope...
Page 53 - Test modes
Operation 53 RT-SVX20A-E4 Test modes There are 2 methods in which the"Test" mode can be cycled with thetest button: 1. Step Test Mode This method initiates the differentcomponents of the unit, one at atime, by temporarily shorting acrossthe two test terminals for two tothree seconds. For the...
Page 55 - Starting the unit in cooling mode
Operation 55 RT-SVX20A-E4 Starting the unit in cooling mode Before start-up, ensure that allpower cables are tightened. Verify that the unit airflow rate isadjusted according to theinformation provided in the "Supplyfan adjustment" section of thismanual. To start the unit in cooling mode:• P...
Page 56 - Evaporator Fan Operation
Operation RT-SVX20A-E4 56 ReliaTel™ is a microelectroniccontrol feature, which providesoperating functions that aresignificantly different fromconventional electro-mechanicalunits. The master module is theReliaTel™ Refrigeration Module(RTRM). The RTRM provides compressorantishort cycle timing functi...
Page 57 - Low Ambient Operation
Operation 57 RT-SVX20A-E4 Low Ambient Operation During low ambient operation,outside air temperature below 13ºC,the RTRM will cycle the compressorand outdoor fan motor "Off" forapproximately three minutes afterevery 10 minutes of accumulatedcompressor run time. The supplyfan motor (IDM) will...
Page 58 - Ignition Module; Allowing the ignition control
Operation RT-SVX20A-E4 58 Economizer Set-Up Adjusting the minimum positionpotentiometer located on the uniteconomizer Actuator (ECA) sets therequired amount of ventilation air. Two of the three methods fordetermining the suitability of theoutside air can be selected utilizingthe enthalpy potentiomet...
Page 59 - Final installation checklist
Operation 59 RT-SVX20A-E4 Refer to the ignition control modulediagnostics section for the LEDdiagnostic definitions. When the fan selection switch is setto the "Auto" position, the RTRMenergizes the supply fan relay (F)coil approximately 30 second afterinitiating the heating cycle to startth...
Page 60 - Maintenance; Air filters
Maintenance RT-SVX20A-E4 60 To keep the unit operating safelyand efficiently, the manufacturerrecommends that a qualified servicetechnician check the entire systemat least once each year, or morefrequently if conditions warrant it. End user routinemaintenance Some of the periodic maintenancefunction...
Page 61 - Condenser coil
Maintenance 61 RT-SVX20A-E4 Note: Do not attempt to cleandisposable filters. Permanent filterscan be cleaned by washing with amild detergent and water. Ensurethat the filters are thoroughly drybefore reinstalling them in the unit(or duct system). Note: Replace permanent filtersannually if washing fa...
Page 62 - Troubleshooting; Step the system through all of; System Status Checkout Procedure
Maintenance RT-SVX20A-E4 62 Troubleshooting The RTRM has the ability to providethe service personnel with someunit diagnostics and system statusinformation. Before turning themain power disconnect switch "Off",follow the steps below to check theReliaTel™ Refrigeration Module (RTRM). Alldiagn...
Page 64 - Service Failure; Cooling Failures and Ignition; Method 1
Maintenance RT-SVX20A-E4 64 Service Failure Measure the voltage betweenterminals J6-10 & J6-6. Clogged Filter = Approximately32 VDC. Normal = Less than 1 VDC,approximately 0.75 VDC Fan Failure = voltage alternatesbetween 32 VDC & 0.75 VDC. To use LED's for quick statusinformation at the unit...
Page 66 - To Test Humidity Sensors
Maintenance RT-SVX20A-E4 66 To Test Humidity Sensors Return Air Humidity Sensor ECA RAH/RAE Outdoor Humidity Sensor ECA OAH/OAE To test this circuit, place a DC milliamp meter in series with either of the leads to the humidity sensor. If the readingis 0ma, polarity may be reversed. Reverse + & -...
Page 67 - Notes
