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Trane TSD - page 1
V o y ag er™ I Roof t op Units Cooling-only TSD/TSH 060 072 1 02 120 Rev ersible WSD/WSH 060 072 090 Gas-fir ed Y SD/Y SH 060 072 090 1 02 120 Installation Oper ation Maint enance R T -S VX20A -E4 ...
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Trane TSD - page 2
Gener al inf or mation RT -SVX20A-E4 2 Fore word These instructions are given as a guide to good practice in the installation, start-up, operation, and maintenance by the user , of T rane TSD/TSH, WSKD/WSH and YSD/YSH units. They do not contain full service procedures necessary for the continued successful operation of this equipment. The services ...
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Trane TSD - page 3
Gener al inf or mation 3 RT -SVX20A-E4 Reception On arrival, inspect the unit before signing the delivery note. In case of visible damage: The consignee (or the site representative) must specify any damage on the delivery note, legibly sign and date the delivery note, and the truc k driver must countersign it. The consignee (or the site representat ...
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Trane TSD - page 4
Cont ents RT -SVX20A-E4 4 Gener al inf or mation 2 Foreword 2 W arnings and Cautions 2 Reception 3 W arranty 3 Refrigerant 3 Maintenance contract 3 Storage 3 T raining 3 Installation 6 Reception of units 6 Roof curb installation 6 Dimensions/W eights/Clearances 7 Installing the unit 9 Connection of duct network 1 0 Condensate drain piping 12 Gas pi ...
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Trane TSD - page 5
Cont ents 5 RT -SVX20A-E4 Unit Options 44 Hot water coil 44 Electric Heater 45 Sof t Starter 45 0 - 25% fresh air hood 46 Barometric relief 47 Oper ation 48 Operation with a conventional thermostat 48 Set ting the economizer 50 T est procedures 52 T est modes 53 Unit Star t-up 54 Cooling without an Economizer 56 Low Ambient Operation 57 Cooling wit ...
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Trane TSD - page 6
Installation RT -SVX20A-E4 6 General inf or mation: The installation must confor m to all local standards and r egulations. Reception of units Rooft op unit There are two ways to handle the unit: 1 . Use the openings in the base to handle the mac hine using a forklift, in accordance with applicable safety regulations. 2. Use a lifting beam correctl ...
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Trane TSD - page 7
Installation 7 RT -SVX20A-E4 Dimensions/W eights/ Clearances The structure accommodating the unit(s) must be designed to support the equipment in operation, as a minimum. Refer to T able 2 and the space requirement plan. Figure 3 - Minimum clear ances T able 1 - Minimum recommended clearances T able 2 - Unit weights and center of gr avity Notes: (1 ...
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Trane TSD - page 8
Installation RT -SVX20A-E4 8 Figure 4 A B C D Cente r of gravity width Cente r of gravity length Cente r of gravity T able 3 - Fact ory-installed options and accessor ies net weights (k g) Notes: (1) Weights for options not listed are < 3 kg. (2) Net weight should be added to unit weight when ordering factory-installed accessories. (3) Some acce ...
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Trane TSD - page 9
Installation 9 RT -SVX20A-E4 Installing the unit Dischar ge Con version If a unit is to be conver ted to V ertical disc harge, a panel must be acquired from T rane. If a unit is to be conver ted to Hor izontal disc harge, the following conversion must be performed: 1 . Remo ve the return and supply duct covers. 2. Apply gasket to the return duct co ...
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Trane TSD - page 10
Installation RT -SVX20A-E4 10 Installing the unit on the ground T o install the unit on the ground, its base must be level and supported securely . For horizontal disc harge units, a support is required suc h as a metal or concrete slab whose height must be determined according to the amount of snow cover , to prevent problems with condensation dra ...
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Trane TSD - page 11
Installation 11 RT -SVX20A-E4 T able 4 - Duct dimensions for downflo w units (mm) T able 5 - Duct dimensions for downflo w units (mm) U n i t s i z e ABCD TSH/WSH 060 591 337 375 438 YSH 060 591 337 375 438 TSH/WSH/YSH 072/090 832 425 606 489 TSH/YSH 1 02/120 832 425 606 489 U n i t s i z e ABCDE F l a n g e s TSD 060 61 9 357 41 1 459 356 32 Y SD ...
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Trane TSD - page 12
Installation RT -SVX20A-E4 12 Condensate dr ain piping A 3/4" condensate drain connection with P -trap is provided. F ollow local codes and standard piping practices when running the drain line. Install a trap and be sure to fill with water before starting the unit. Pitc h the line downw ard, away from the unit to avoid long, level, horiz onta ...
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Trane TSD - page 13
Installation 13 RT -SVX20A-E4 Gas pipewor k installation The installation must conform to all standards and regulations. The gas supply pipework and g as stop valve to be installed near the unit must be sized so as to ensure the gas pressure is suf ficient at the unit inlet when operating at full load. CA UTION! Should the pressure at the unit valv ...
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Trane TSD - page 14
Installation RT -SVX20A-E4 14 Filter installation T o gain access to filters, remove the supply fan access panel on downflow units and the filter access panel on the end for horizontal units. Number and size of filters is determined by size and configuration of the unit. If disposable filters were c hosen as an option, they are shipped in the suppl ...
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Trane TSD - page 15
Installation 15 RT -SVX20A-E4 T o adjust belt The fan belts must be inspected periodically to assure proper unit operation. Replacement is necessary if the belts appear frayed or worn. Units with dual belts require a matc hed set of belts to ensure equal belt length. When removing or installing the new belts, do not stretc h them over the sheaves. ...
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Trane TSD - page 16
Component air pr essur e dr ops T able 9 - Pressur e drop thr ough accessor ies Unit size Airflow (m 3 /h) Filter EU2/G2 Filter EU4/G4 Economizer 10 0 % outside air Electr ic heater Hot wat er coil 060 3060 31 50 38 1 7 49 3 4 0 0 3 85 54 62 15 5 37 40 46 61 55 25 62 4080 55 66 64 30 68 072 3670 1 3 37 27 7 46 4080 1 6 42 29 9 52 4490 1 9 46 31 1 1 ...
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Trane TSD - page 17
Installation 17 RT -SVX20A-E4 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 1 0 - TSD 060 A vailable static pr essur e Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 250 275 300 m 3 /h RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW kW kW 2720 - ...
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Trane TSD - page 18
Installation RT -SVX20A-E4 18 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 12 - TSD 072 A v ailable static pressur e Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 250 275 300 m 3 /h RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW kW kW 3260 - - ...
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Trane TSD - page 19
Installation 19 RT -SVX20A-E4 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 14 - TSD 090 A v ailable static pressur e Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 250 275 300 m 3 /h RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW kW kW 4080 - - ...
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Trane TSD - page 20
Installation RT -SVX20A-E4 20 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 16 - TSD 1 02 A vailable static pr essure Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 250 275 300 m 3 /h RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW kW kW 4620 - - ...
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Trane TSD - page 21
Installation 21 RT -SVX20A-E4 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 18 - TSD 120 Av ailable static pressur e Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 250 275 300 m 3 /h RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW kW kW 5440 - - ...
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Trane TSD - page 22
Installation RT -SVX20A-E4 22 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 20 - Y SD 060 A v ailable static pr essure Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 ...
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Trane TSD - page 23
Installation 23 RT -SVX20A-E4 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 22 - Y SD 072 A v ailable static pr essure Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 ...
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Trane TSD - page 24
Installation RT -SVX20A-E4 24 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 24 - Y SD 090 A v ailable static pr essure Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 ...
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Trane TSD - page 25
Installation 25 RT -SVX20A-E4 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 26 - Y SD 1 02 Av ailable static pressur e Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 ...
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Trane TSD - page 26
Installation RT -SVX20A-E4 26 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 28 - Y SD 120 A v ailable static pr essure Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 250 275 300 m 3 /h RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW kW kW 5440 - ...
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Trane TSD - page 27
Installation 27 RT -SVX20A-E4 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 30 - WSD 060 A vailable static pr essur e Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 250 275 300 m 3 /h RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW RPM kW kW kW 2720 - - ...
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Trane TSD - page 28
Installation RT -SVX20A-E4 28 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 32 - WSD 072 A vailable static pr essur e Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 2 ...
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Trane TSD - page 29
Installation 29 RT -SVX20A-E4 Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils Standard drive Oversiz e drive Note : Data includes pressure drops for standard filters and wet coils T able 34 - WSD 090 A vailable static pr essur e Exter nal Static Pressur e (Pa) 25 50 75 1 00 125 150 175 200 225 2 ...
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Trane TSD - page 30
Installation RT -SVX20A-E4 30 Electr ical connection The electric panel is located in the unit compressor section. Remo ve the compressor access panel. The unit is designed to run with 40 0 V +/- 5%/50 Hz/ 3 ph. F actory supplied disconnect switc h (option) The disconnect switc h is factory mounted. It is located in the compressor section. Mount th ...
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Trane TSD - page 31
Installation 31 RT -SVX20A-E4 The "ABC" indicator on the face of the phase indicator will glow if phase is ABC for terminals L1, L2, L3. IMPORT ANT! After completion of wiring, c hec k all electrical connections, and ensure all connections are tight. Replace and secure all electrical box co ver s and access doors before leaving unit or co ...
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Trane TSD - page 32
Installation RT -SVX20A-E4 32 T able 37 - Compressor and condenser motors T able 38 - Supply fan mot or Standard supply f an motor Oversiz ed supply fan mot or Unit Model and size Number of motors Main pow er supply (V) Number of phases Motor HP (kW) Rated amps (A) Lock ed roto r amps (A) Number of motors Main pow er supply (V) Number of phases Mot ...
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Trane TSD - page 33
Contr ols 33 RT -SVX20A-E4 Contr ol wir ing The control circuit is 24 V AC. Unit includes a 40 0/24 V transformer . W ARNING! The unit disconnect switc h must be opened and loc k ed open. Risk of injury and electrocution. Figure 14 - Thermostat wir ing J7 J6 CA UTION! The unit 24 V transformer must not be used to power accessories mounted on site, ...
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Trane TSD - page 34
Contr ols RT -SVX20A-E4 34 T rane THS0 1,THS02, THP0 1 and THP02 Thermostats are directly connected to R TRM board (J7 connector). T rane THS03 and THP03 thermostats are directly connected to R TRM board (J6 connector). Install the electrical link between the thermostat (thermostat terminal strip) and the unit (J6 or J7 connector) in compliance wit ...
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Trane TSD - page 35
Contr ols 35 RT -SVX20A-E4 The CO 2 sensor is designed to operate with a nominal 24 V ac supply . The power supply should maintain the voltage between 20 to 26 V ac. T able 41 - CO 2 sensor wire siz e Wire siz e (mm²) Maximum wire lengh (m) 0,25 50 0,5 1 0 0 12 0 0 T able 40 - Specifications W all-mounted Duct-mount ed Measuring range CO 2 0-200 0 ...
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Trane TSD - page 36
Contr ols RT -SVX20A-E4 36 Wir ing the wall-mount ed CO 2 sensor DV C setpoint potentiometer on economizer module can be adjusted as follows: 0% - 50 0ppm, 50% - 1 0 0 0 ppm, 1 0 0% - 150 0ppm The outside air damper will modulate from minimum position setting to up to 1 0 0% while attempting to maintain the CO 2 setpoint. Wir ing the duct-mounted C ...
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Trane TSD - page 37
Contr ols 37 RT -SVX20A-E4 Mounting the wall-mount ed sensor 1 . Select a proper location in the room to mount the CO 2 sensor . Look for an interior w all with good air circulation, approximately 1 .4 m from the floor . 2. Remove the bac k plate from the sensor and thread the power wires and output signal wire through the hole in the bac k plate ( ...
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Trane TSD - page 38
Contr ols RT -SVX20A-E4 38 Mounting the duct-mounted CO 2 sensor 1 . 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 sensor insertion (Figure 1 9). 3. Attac h the mounting plate to the duct wall with four screws. 4. Insert the sensor through the mounting plate, adjusting the depth ...
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Trane TSD - page 39
Contr ols 39 RT -SVX20A-E4 Remote pot entiometer T o install the remote potentiometer , cut the jumper WL on the economizer ECA board, and connect the wires to J1 1 and J12. Note: This potentiometer allows to adjust the permanent fresh air intake from 0 to 50%. 0 W corresponds to closed fresh air damper . 270 W corresponds to 50% open fresh air dam ...
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Trane TSD - page 40
Contr ols RT -SVX20A-E4 40 Fir e ther mostat There are two sensors in the fire thermostat Kit: Sensor X1 31 0 0 040- 0 1 is factory-set to open at 57°C, Sensor X1 31 0 0 040-02 is set to open at 1 15°C. Sensors are mounted directly in the ductwork. They should be installed where elements can respond quic kly to air temperature c hanges. If not po ...
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Trane TSD - page 41
Contr ols 41 RT -SVX20A-E4 Clogged filt er detector This device is mounted in the indoor fan section. The sensor measures the difference in pressure before and after the filter section. The information is sent to the THP03 thermostat, to a T rac k er™ or to a BMS. The setting range is 40 to 30 0 P a. Figure 25- Clogg ed filter sensor 1 = Secure w ...
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Trane TSD - page 42
Contr ols RT -SVX20A-E4 42 Ther mostats 6 thermostats are available: THS0 1/THP0 1, THS02/THP02 and THS03/THP03. "THS" are non programmable thermostats, "THP" are programmable. 0 1 and 02 series are conventional thermostat, 03 series are dedicated to the controller . T able 42 - Ther mostat f eatur es Note: thermostats are power ...
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Trane TSD - page 43
Contr ols 43 RT -SVX20A-E4 Other accessor ies av ailable Remote temperature sensor to be used with THS/THP 0 1 -02. TZS0 1: Remote room temperature sensor to be used with THS/THP 03, T racker or V aritrac systems. DTS: Duct temperature sensor to be used with THS/THP 03. TZS02: Remote room temperature sensor with adjustable thumwheel setpoint to be ...
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Trane TSD - page 44
Unit Options RT -SVX20A-E4 44 Hot wat er coil (Down flo w units only) In order to prevent water to freez e up in the coil during unoccupied period or shutdown limited period, a thermostat opens when there is a risk of freeze-up. The services of a water treatment specialist are recommended if water used can cause scaling deposits or erosion. Insulat ...
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Trane TSD - page 45
Unit Options 45 RT -SVX20A-E4 Electr ic Heater Electric heaters are fitted on the fan disc harge. Heaters have two heating stages and provided with two types of overheat thermostats: • Automatic reset thermostats whic h stop the electric heater when the air temperature rises to 7 6°C. Automatic reset at 60°C. No alarm output available. • The ...
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Trane TSD - page 46
Unit Options RT -SVX20A-E4 46 0 - 25% fr esh air hood The 0-25% fresh air hood allows to introduce fresh air into the unit. This is a manual device fitted on the bac k of the unit, siz ed for a maximum of 25% of the nominal rooftop air flow . This option includes for the hood itself, a wire mesh and a slidable damper . The slidable damper has to be ...
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Trane TSD - page 47
Unit Options 47 RT -SVX20A-E4 Bar ometr ic r elief The barometric relief allows to minimize o verpressure in the building caused by the introduction of fresh air . This option is typically installed when fresh air intake is below 25% of the nominal air flow and when the return air pressure drop is below 25P a. This option includes exhaust hoods and ...
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Trane TSD - page 48
Oper ation RT -SVX20A-E4 48 Operation with a conv entional thermostat The ReliaT el module has conventional thermostat connections as well as Zone Sensor Module connections. When a conventional thermostat is controlling the unit, operation differs as follows: • Supply Air T empering feature is not available. If outdoor air is being introduced thr ...
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Trane TSD - page 49
Oper ation 49 RT -SVX20A-E4 Logic is also provided to cause appropriate unit functions when inappropriate thermostat signals are provided. Simultaneous calls for heating and cooling will be ignored, and the fan will be turned on with a call for heating or cooling even if the fan request is not detected. If the thermostat is immediately c hanged fro ...
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Trane TSD - page 50
Oper ation RT -SVX20A-E4 50 Unoccupied mode If the thermostat being used is programmable, it will have its own strategy for unoccupied mode and will control the unit directly . If a mec hanical thermostat is being used, a field applied time cloc k with relay contacts connected to J6-1 1 and J6-12 can initiate an unoccupied mode as follows: • Cont ...
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Trane TSD - page 51
Oper ation 51 RT -SVX20A-E4 T o c hec k the damper is functioning correctly , the ECA is equipped with an indicator light in the middle of the board. This light operates as in T able 42. T able 47 - ECA board LED While setting the minimum position the damper may move tow ards the new setting in several small steps. Once the damper has remained in t ...
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Trane TSD - page 52
Oper ation RT -SVX20A-E4 52 T est pr ocedur es Operating c hecklist bef or e start-up • Unit is level, with sufficient clearance all round • Duct network is correctly siz ed according to the unit configuration, insulated, and water -tight • Condensate drainage line is correctly siz ed, equipped with a trap, and sloped • Filters are in posit ...
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Trane TSD - page 53
Oper ation 53 RT -SVX20A-E4 T est modes There are 2 methods in whic h the "T est" mode can be cycled with the test button: 1 . Step T est Mode This method initiates the different components of the unit, one at a time, by temporarily shorting across the two test terminals for two to three seconds. For the initial star tup of the unit, this ...
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Trane TSD - page 54
Oper ation RT -SVX20A-E4 54 Unit start-up V erification of gas valve set tings - (Reserved for the qualified g as tec hnician) W ARNING! Improper gas valve setting may lead to burner destruction and people injury . Note: Unit factory -set for G20. Figure 32 - Gas v alve 1 = Screw to set g as valve 1 3/32" G 20 - 7. 5 mb a r G20 - 7.5mbar G 2 5 ...
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Trane TSD - page 55
Oper ation 55 RT -SVX20A-E4 Starting the unit in cooling mode Before start-up, ensure that all power cables are tightened. V erify that the unit airflow rate is adjusted according to the information provided in the "Supply fan adjustment" section of this manual. T o start the unit in cooling mode: • Place the zone sensor system switc h ...
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Trane TSD - page 56
Oper ation RT -SVX20A-E4 56 ReliaT el™ is a microelectronic control feature, whic h provides operating functions that are significantly different from conventional electro-mec hanical units. The master module is the ReliaT el™ Refrigeration Module (R TRM). The R TRM provides compressor antishort cycle timing functions through minimum "Off& ...
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Trane TSD - page 57
Oper ation 57 RT -SVX20A-E4 Low Ambient Operation During low ambient operation, outside air temperature below 13ºC, the R TRM will cycle the compressor and outdoor fan motor "Off" for approximately three minutes af ter every 1 0 minutes of accumulated compressor run time. The supply fan motor (IDM) will continue to operate during this ev ...
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Trane TSD - page 58
Oper ation RT -SVX20A-E4 58 Economizer Set-Up Adjusting the minimum position potentiometer located on the unit economizer Actuator (ECA) sets the required amount of ventilation air . T wo of the three methods for determining the suitability of the outside air can be selected utilizing the enthalpy potentiometer on the ECA, as described below: 1 . A ...
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Trane TSD - page 59
Oper ation 59 RT -SVX20A-E4 Refer to the ignition control module diagnostics section for the LED diagnostic definitions. When the fan selection switc h is set to the "Auto" position, the R TRM energizes the supply fan relay (F) coil approximately 30 second af ter initiating the heating cycle to start the supply fan motor (IDM). The automa ...
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Trane TSD - page 60
Maint enance RT -SVX20A-E4 60 T o keep the unit operating safely and efficiently , the manufacturer recommends that a qualified service tec hnician c hec k the entire system at least once eac h year , or more frequently if conditions war rant it. End user r outine maintenance Some of the periodic maintenance functions for the unit can be undertaken ...
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Trane TSD - page 61
Maint enance 61 RT -SVX20A-E4 Note: Do not at tempt to clean disposable filters. Permanent filters can be cleaned by washing with a mild detergent and water . Ensure that the filters are thoroughly dry before reinstalling them in the unit (or duct system). Note: R eplace permanent filters annually if washing fails to clean them, or they show signs ...
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Trane TSD - page 62
Maint enance RT -SVX20A-E4 62 T r oubleshooting The R TRM has the ability to provide the service personnel with some unit diagnostics and system status information. Before turning the main power disconnect switc h "Of f", follow the steps below to c hec k the ReliaT el™ Refrigeration Module (R TRM). All diagnostics & system status i ...
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Trane TSD - page 63
Maint enance 63 RT -SVX20A-E4 Below is the complete listing of failure indication causes: Syst em f ailur e Chec k the voltage between terminals 6 and 9 on J6, it should read approximately 32 VDC. If no voltage is present, a system failure has occurred. R efer to Step 4 in the previous section for the recommended troubleshooting procedure. Heating ...
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Trane TSD - page 64
Maint enance RT -SVX20A-E4 64 Service F ailur e Measure the voltage between terminals J6-1 0 & J6-6. Clogged Filter = Approximately 32 VDC. Normal = Less than 1 VDC, approximately 0.75 VDC Fan F ailure = voltage alternates between 32 VDC & 0.75 VDC. T o use LED's for quic k status information at the unit, purc hase a ZSM and connect wi ...
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Trane TSD - page 65
Maint enance 65 RT -SVX20A-E4 Zone T emperatur e Sensor (ZTS) T est Note:These pr ocedur es are not f or progr ammable or digital models and ar e conducted with the Zone Sensor Module electr ically r emov ed from the system. T est 1 Zone T emperat ure Ther mistor (ZTEMP) This component is tested by measuring the resistance between terminals 1 and 2 ...
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Trane TSD - page 66
Maint enance RT -SVX20A-E4 66 T o T est Humidity Sensors Retur n Air Humidity Sensor ECA RAH/RAE Outdoor Humidity Sensor ECA O AH/O AE T o test this circuit, place a DC milliamp meter in series with either of the leads to the humidity sensor . If the reading is 0ma, polarity may be reversed. Reverse + & - and retest. If the reading does not cor ...
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Trane TSD - page 67
Not es 67 RT -SVX20A-E4 ...
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Trane TSD - page 68
Literature Order Number RT -SVX20A-E4 Date 0606 Supersedes RT -SVX20A-E4_1 1 05 Literature Stoc king Location Europe T rane has a policy of continuous product and product data improvement and reserves the right to c hange design and specifications without notice. Only qualified tec hnicians should perform the installation and servicing of equipment ...
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