Trane Odyssey 6 to 25 Tons Installation and Maintenance Manual
Contents
1. 34 Test 1 Zone Temperature Thermistor 2 34 Test 2 Cooling Set Point CSP and Heating Set Point HSP 34 Test 3 System Mode and Fan 34 Test 4 LED Indicator Test SYS ON HEAT amp 1 35 Programmable amp Digital Zone Sensor cies sas etus 3b SS SVX12C EN Table of Contents Testing Serial Communication Maintenance 0 37 dob ed oe atra 3b m ossoP Communications s ceo 35 Wiring Diagram 38 Maintenance 36 MOnt oo eis ete eh 36 Annually Cooling Season 36 Coll ren dx 36 SS SVX12C EN 5 Model Number Description Cooling Condenser TTA 120 A 123 456 7 8 All products are identified by a multiple character model number that precisely identifies a particular type of unit An explanation of the alphanumeric identification code is provided Its use will enable the owner operator installing contractors and service engineers to define the operation specific components and other options for any specific unit When ordering replacement parts or requesting service be sure to refer to the specific model number serial number and DL number if applicable stamped on the unit nameplate DIGITS 12. Control Circuit Features Note Not all of these features may be required for your unit check electrical schematic Discharge Temperature Limit DTL The control s sensor is located on the discharge line This device will shut off the compressor and the outdoor fan s if the discharge temperature exceeds the DTL setting Once the discharge temperature has returned to normal the compressor will cycle back on Low Outdoor Ambient Cooling The Evaporator Defrost Control is standard equipment on Air Handlers and will permit low ambient cooling down to 50 F For cooling operation down O F use Accessory Head Pressure Control on the outdoor unit Evaporator Defrost Control EDC This control is located in the Air Handler The control s sensing tube is embedded vertically in the evaporator coil near the center This device will stop the compressor if the indoor coil temperature drops below its setting The indoor air will still circulate across the coil bringing the temperature of the coil back up to the cut in temperature of the evaporator defrost control Low Pressure Cut Out LPCO This control s sensor is located in the suction gas line near the compressor This control will stop the compressor and the outdoor fans if suction pressure 28 drops below the Low Pressure Cut Out setting Once the suction pressure has returned to normal the compressor and outdoor fans will cycle back on High Pressure Cut Out HP
3. Inspect the control panel wiring to ensure that all connections are tight and that the insulation is intact Note Condenser fan motors are permanently lubricated 1 Check refrigerant piping and fittings for leaks Inspect the condenser coils for dirt and debris If the coils appear dirty clean them Coil Cleaning Regular coil maintenance including annual cleaning enhances the unit s operating efficiency by minimizing e compressor head pressure and amperage draw e water carryover e fan brake horsepower e static pressure losses At least once each year or more often if the unit is located in a dirty environment clean the coil using the instructions outlined below Be sure to follow these instructions as closely as possible to avoid damaging the coils To clean refrigerant coils use a soft brush and a sprayer Contact your local Parts Center for appropriate detergents 1 Remove enough panels from the unit to gain safe access to coil Straighten any bent coil fins with a fin comb 3 Remove loose dirt and debris from both sides of the coil with a soft brush 4 Mixthe detergent with water according to the manufacturer s instructions If desired heat the solution to 150 F maximum to improve its cleansing capability Pour the cleaning solution into the sprayer Spray the leaving airflow side of the coil first then spray the opposite side of the coil Allow the cleaning solution to s
4. 3 Product Type TTA Split System Cooling DIGITS 4 6 Nominal Gross Cooling Capacity MBh 090 7 5 Tons 60Hz 120 10 Tons 60Hz 1 sequential alpha character 6 00 9 10 11 12 180 2 15 Tons 60Hz 240 20 Tons 60Hz DIGIT 7 Major Development Sequence A Single Compressor Single Circuit R 22 B Dual Compressor Dual Circuit R 22 DIGIT 8 Electrical Characteristics 3 208 230 60 3 4 460 60 3 DIGITS 9 10 Factory Installed Options 00 Packed Stock DIGITS 11 Minor Design Sequence Current Design Sequence DIGITS 12 Service Digit Current Design Sequence SS SVX12C EN General Information This manual describes proper installation operation and maintenance procedures for air cooled systems By carefully reviewing the information within this manual and following the instructions the risk of improper operation and or component damage will be minimized It is important that periodic maintenance be performed to help assure trouble free operation Should equipment failure occur contact a qualified service organization with qualified experienced HVAC technicians to properly diagnose and repair this equipment Important All phases of this installation must comply with the NATIONAL STATE amp LOCAL CODES In addition to local codes the installation must conform with National Electric Code ANSI NFPA NO 70 LATEST REVISION Any individual installing maintaining or
5. 85 7 uu RE 4 8 PANEL 1051 93 5 16 2370 1 7 16 11 1 DIA ISOLATOR MOUNTING HOLES OUTSIDE HOLES 4 PLACES SERVICE PANEL SIDE I 41 1 2 BOTTOM OF UNIT OTTOM OF U 26 ign 1054 936 6 23 16 6 13 16 225 55 6 173 93 a 2362 2 SS SVX12C EN NOTES 1 MINIMUM CLEARANCE FOR PROPER OPERATION IS 36 914 4 FROM WALLS SHRUBBERY PRIVACY FENCES ETC MINIMUM CLEARANCE BETWEEN ADJACENT UNITS IS 72 1828 8 RECOMMENDED SERVICE CLEARANCE 48 1219 2 2 TOP DISCHARGE AREA SHOULD BE UNRESTRICTED FOR 100 2540 MINIMUM UNIT SHOULD BE PLACED SO ROOF RUN OFF WATER DOES NOT POUR DIRECTLY ON UNIT 3 OUTDOOR AIR TEMPERATURE SENSOR OPENING DO NOT BLOCK OPENING 46 1168 4 WITH HAIL GUARD 44 1117 6 HAIL GUARD OPTIONAL 9 25 11 16 9 228 6 652 5 228 6 91 4 235 H 613 16 173 L 1 3 16 30 2 502 CONTROL LINE VOLTAGE nie SUCTION LINE REFRIGERANT ACCESS 41 5 8 BN 39 7 8 1057 3 1012 8 18 3 4 1 P 14 5 8 4762 3715 12 9 16 1 319 1 LIQUID LINES 5 9 16 PEE d 41 9 411 1 SUCTION LINE K 6 5 16 160 3 3 11 16 93 7 15 16 23 8 FRONT DETAIL A DIMENSIONAL DETAIL 13 Weights Cooling Condenser Table 1 TTA unit and corner weights Ibs 60 Hz ippi Corner Weights Tons
6. A WARNING Refrigerant under High Pressure Failure to follow instructions below could result in an explosion which could result in death or serious injury or equipment damage System contains oil and refrigerant under high pressure Recover refrigerant to relieve pressure before opening the system See unit nameplate for refrigerant type Do not use non approved refrigerants refrigerant substitutes or refrigerant additives Copyright This document and the information in it are the property of Trane and may not be used or reproduced SS SVX12C EN Introduction in whole or in part without the written permission of Trane Trane reserves the right to revise this publication at any time and to make changes to Its content without obligation to notify any person of such revision or change Trademarks All trademarks referenced in this document are the trademarks of their respective owners Revision History Removed warranty chapter updated with running edits Table of Contents Model Number Description Cooling General Information Unit Pre Installation Unit InspectlOll us edi ba xe Inspection Checklist Testing for Lifting Recommendations Clearances mos isa eX PA PRESS RSS CO
7. control voltage The transformer steps down the line voltage to 24V for the low voltage control circuit When the room thermostat system switch is positioned at COOL and the fan switch is at AUTO the compressor contactor energizes on a call for cooling When the contacts of the compressor contactor close operation of the compressor and condenser fan begins The SS SVX12C EN evaporator fan contactor also energizes on a call for cooling and initiates evaporator fan operation On units with dual circuits the second stage of cooling Is initiated as a result of the 2 stage thermostat calling for additional cooling ReliaTel Controls The ReliaTel Control is a microelectronic control feature which provides operating functions that are significantly different than conventional Electromechanical units The ReliaTel Refrigeration Module RTRM uses Proportional Integral control algorithms to perform specific unit functions that govern the unit operation in response to application conditions The RTRM provides compressor anti short cycle timing functions through minimum Off and On timing to increase reliability performance and to maximize unit efficiency Upon power initialization the RTRM performs self diagnostic checks to ensure that all internal controls are functioning It checks the configuration parameters against the components connected to the system The system LED located on the RTRM module is turned On within one s
8. requiring only one set of refrigerant lines Dual compressor dual circuit models give true stand by protection if one compressor fails the second will automatically start up Also the first compressor can be serviced without shutting down the unit since the refrigerant circuits are independent During light load conditions only one compressor will operate to save energy Pre Installation Unit Inspection Inspect material carefully for any shipping damage If damaged it must be reported to and claims made against the transportation company Compare the information that appears on the unit nameplate with ordering and submittal data to ensure the proper unit was shipped Available power supply must be compatible with electrical characteristics specified on component nameplates Replace damaged parts with authorized parts only Inspection Checklist To protect against loss due to damage incurred in transit complete the following checklist upon receipt of the unit Inspect individual pieces of the shipment before accepting the unit Check for obvious damage to the unit or packing material Inspect the unit for concealed damage before it is stored and as soon as possible after delivery Concealed damage must be reported within 15 days If concealed damage is discovered stop unpacking the shipment Do not remove damaged material from the receiving location Take photos of the damage if possible The owner m
9. voltage alternates between 32 VDC amp 0 75 VDC To use LED s for quick status information at the unit purchase a BAYSENSO 10B ZSM and connect wires with alligator clamps to terminals 6 through 10 Connected each respective terminal wire 6 through 10 from the Zone Sensor to the unit J6 terminals 6 through 10 Note If the system is equipped with a programmable zone sensor BAYSENS119A 5 5023 the LED indicators will not function while the BAYSENSO 10A is connected Resetting Cooling and Heating Lockouts Cooling Failures and Heating Lockouts are reset in an identical manner Method 1 p 33 explains resetting the system from the space Method 2 p 33 explains resetting the system at the unit Note Before resetting Cooling Failures and Heating Lockouts check the Failure Status Diagnostics by the methods previously explained Diagnostics will be lost when the power to the unit is disconnected Method 1 To reset the system from the space turn the MODE selection switch at the zone sensor to the OFF position After approximately 30 seconds turn the MODE selection switch to the desired mode i e HEAT COOL or AUTO Method 2 To reset the system at the unit cycle the unit power by turning the disconnect switch OFF and then ON Lockouts can be cleared through the building management system Refer to the building management system instructions for more information Zone Temperature Sensor ZTS
10. Mounting WARNING Mounting Integrity Failure to follow instruction below could result in death or serious injury or possible equipment or property only damage Ensure the roof structure supports are strong enough to support the weight of the unit and any accessories Structural Preparation NOTICE Roof Damage System contains oil and refrigerant under high pressure Roofs should be protected from exposure to oils and refrigerant in the system If rooftop is not protected damage to the roof may occur Important Refer to local building codes for proper installation All installation must comply with local building codes Rooftop Mounting If the unit will be roof mounted determine for certain that the structure is strong enough to support the unit and any required accessories see Weights p 14 The unit should be elevated on a level field fabricated four inch steel or wood 4 x 4 mounting frame Complete the frame and secure it into position before lifting the unit to the roof The mounting frame must support a minimum of three of the unit s four sides and should span roof supports to distribute the load on the roof SS SVX12C EN Pre Installation Figure 1 Roof mounted unit Outdoor Unit Gas Suction Line Insulated Liquid Line Insulated Unit Mounting Channels Elevation Mounting Frame EE Roof Construction Roof Trussing PRI EET A Ceiling Ground L
11. Required Failure to follow code could result in death or serious injury field wiring MUST be performed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes WARNING Personal Protective Equipment Required Failure to wear proper PPE for the job being undertaken could result in death or serious injury Technicians in order to protect themselves from potential electrical mechanical and chemical hazards MUST follow precautions in this manual and on the tags stickers and labels as well as the instructions below e Before installing servicing this unit technicians MUST put on all Personal Protective Equipment PPE recommended for the work being undertaken ALWAYS refer to appropriate MSDS sheets and OSHA guidelines for proper PPE When working with or around hazardous chemicals ALWAYS refer to the appropriate MSDS sheets and OSHA guidelines for information on allowable personal exposure levels proper respiratory protection and handling recommendations If there is a risk of arc or flash technicians MUST put on all Personal Protective Equipment PPE in accordance with NFPA 7OE or other country specific requirements for arc flash protection PRIOR to servicing the unit SS SVX12C EN
12. Service Indicator The ZSM SERVICE LED is a generic indicator that will signal the closing of a Normally Open switch at any time providing the Indoor Motor IDM is operating 33 Troubleshooting This indicator is usually used to indicate an airside fan Table8 Typical indoor temperatures and values failure continued The RTRM will ignore the closing of this Normally Zone Temperature Nominal Resistance Open switch for 2 1 minutes This helps prevent nuisance SERVICE LED indications 65 F or 18 39 13 49 Kohms 70 F or 21 1 C 11 9 Kohms Temperature Tests Note These procedures are not for programmable or 80 F or 26 7 C 9 3 Kohms digital models and are conducted with the Zone 85 F or 29 4 C 8 25 Koh Sensor Module electrically removed from the gt system 90 F or 32 2 C 7 3 Kohms Test 1 Zone Temperature Thermistor Test 2 Cooling Set Point CSP and Heating Set Point HSP This component can be tested by measuring the Cool SP Terminals 2 and 3 resistance between terminals 1 and 2 on the Zone Temperature Sensor See Table 8 p 34 for typical Range 100 to 900 Ohms approximate indoor temperatures and corresponding resistive Heat SP Terminals 2 and 5 values Range 100 to 900 Ohms approximate Table8 Typical indoor temperatures and values The combined resistance of the MODE selection switch and the FAN selection switch be measured between ter
13. ShippingMax 1 Corner Weights oe oa 2 3 4 TTAOSOA Figure 6 TTAO90A 120A LIFTING HOLES BOTH SIDES LIFTING HOLES BOTH SIDES 14 SS SVX12C EN Installation Refrigerant Piping Guidelines Figure8 Allowable elevation difference Cooling only TTA above indoor unit 40 based total suction line length TTA above indoor unit Acceptable suction riser height elevation difference ft UJ ADRESSES 100 125 150 total line length horizontal vertical ft Figure9 Allowable elevation difference TTA below indoor unit 2200 22 ASR 20 Acceptable liquid riser height dd based on total liquid line length _ Arden ABS 9 25 50 75 100 125 150 total line length horizontal vertical ft elevation difference ft Note Route refrigerant piping for minimum linear length minimum number of bends and fittings no reducers and minimum amount of line exposed to outdoor ambients SS SVX12C EN 15 Installation Refrigerant Piping Procedures Outdoor Units WARNING R 410A Refrigerant under Higher Pressure than R 22 Failure to use proper equipment or components as described below could result in equipment failing and possibly exploding which could result in death serious injury or equipment damage The units described
14. heat is factory disabled on all split system units with ReliaTel control jumper placed between J2 1 and J2 2 RTRM inputs To configure the unit for electric heat cut or remove the jumper wire between J2 1 and J2 2 on the All split system units with ReliaTel control are also configured from the factory for only 1 stage of electric heat jumper placed between J1 3 and J1 6 RTRM inputs To configure the unit for 2 stages of electric heat cut or remove the jumper placed between J1 3 and J1 6 RTRM inputs When the system switch is set to the HEAT position and heating is required the RTRM energizes the Heat 1 relay coil on the RTRM When the Heat 1 relay contacts close the first stage electric heat contactor is energized If the first stage of electric heat cannot satisfy the heating requirement the RTRM energizes the Heat 2 relay coil on the RTRM When the Heat 2 relay contacts close the second stage electric heat contactor is energized The first and second stages of heat are cycled On and Off as required to maintain the zone SS SVX12C EN Service Test Modes for ReliaTel Controls Test Modes Upon power initialization the RTRM performs self diagnostic checks to ensure that all internal controls are functional It also checks the configuration parameters against the components connected to the system The system LED located on the RTRM module is turned On within one second of power up if internal operation is oka
15. in this manual use R 410A refrigerant which operates at higher pressures than R 22 Use ONLY R 410A rated service equipment or components with these units For specific handling concerns with R 410A please contact your local Trane representative Each TTA unit ships with a holding charge of dry nitrogen The nitrogen should be removed and the entire system evacuated at the proper time to avoid possible contamination 1 Remove the compressor service access panel 2 Locate the liquid and suction line service valves Check that the piping connection stubs on the valves Figure 10 p 16 line up properly with the holes in the unit cabinet Figure 10 Outdoor units refrigerant piping with dry nitrogen GAS LINE GAUGE PORT GAS LINE SERVICE VALVE SIAR LIQUID LINE GAUGE PORT LIQUID LINE SERVICE VALVE MANIFOLD GAUGES FROM DWG A668541 3 Remove the refrigerant connection seal caps and open the service valve slowly to release the nitrogen from the unit NOTICE System Component Damage Do not remove the seal caps from refrigerant connections or open the service valves until prepared to braze refrigerant lines to the connections Excessive exposure to atmosphere gt 5 min may allow moisture or dirt to contaminate the system damaging valve seals and causing ice formation in system components WARNING Hazard of Explosion and Deadly Gases Failure to follow all
16. personnel with some unit diagnostics and system status information Before turning the main power disconnect switch Off follow the steps below to check the ReliaTel Refrigeration Module RTRM diagnostics amp system status information stored in the RTRM will be lost when the main power is turned Off To prevent injury or death from electrocution it is the responsibility of the technician to recognize this hazard and use extreme care when performing service procedures with the electrical power energized Note The J6 amp J7 screw terminals must be tightened in order to accurately measure voltage in the required steps 1 Verify that the system LED on the RTRM is burning continuously If the LED is lit go to Step 3 2 Ifthe LED is not lit verify that 24 VAC is present between J1 1 and J1 2 If 24 VAC is present proceed to Step 3 If 24 VAC is not present check the unit main power supply check transformer TNS1 Proceed to Step 3 if necessary 3 Utilizing Method 1 p 32 or Method 2 p 33 in the System Status Checkout Procedure section check the following e System status e Heating status e Cooling status Note If a System failure is indicated proceed to Step 4 If no failures are indicated proceed to Step 5 4 System failure is indicated recheck Step 1 and Step 2 If the LED is not lit in Step 1 and 24 VAC is present in Step 2 then the RTRM has failed Replace the RTRM 5 If nofa
17. servicing this equipment must be properly trained licensed and qualified Important Do not remove the VFD without first contacting technical support For performance related questions and diagnostic support in North America call 1 877 872 6363 Any return requires a claim number FIRST Removal of the VFD prior to this step will void the unit s warranties Installation procedures should be performed in the sequence that they appear in this manual Do not destroy or remove the manual from the unit The SS SVX12C EN manual should remain weather protected with the unit until all installation procedures are complete Note It is not the intention of this manual to cover all possible variations in systems that may occur or to provide comprehensive information concerning every possible contingency that may be encountered during an installation If additional information is required or if specific problems arise that are not fully discussed in this manual contact your local sales office Use the Installation Checklist p 27 provided In this manual to verify that all necessary installation procedures have been completed Do not use the checklist as a substitute for reading the information contained in the manual Read the entire manual before beginning installation procedures Unit Description These condensers come with single and dual compressor options Single compressor outdoor units feature a single refrigeration circuitry
18. the outdoor unit without the indoor fan energized can cause unit trip out on high pressure control and or liquid flood back to the compressor General Operation of the system cooling and optional heating cycles is controlled by the position of the system switch on the room thermostat Once the system switch is placed in either the HEAT or COOL position unit operation is automatic The optional automatic changeover thermostat when in the AUTO position automatically changes to heat or cool with sufficient room temperature change Evaporator Fan Indoor Supply Air The evaporator fan is controlled by an ON AUTO switch on the room thermostat With the switch positioned at AUTO and the system operating in the cooling mode fan operation coincides with the cooling run cycles If the system is equipped with heat and is operating in the heating mode while the fan switch is at AUTO fan operation coincides with the heating run cycles When the fan switch is positioned at ON fan operation is continuous Cooling Mode With the disconnect switch in the ON position current is supplied to the compressor sump heater s phase monitor and control transformer The sump heater s supplies heat to the compressor s during the Off cycle The phase monitor looks at the incoming power to verify that there is no reversed phase no phase imbalance and no loss of phase If the phase monitor detects any of these three conditions it will shut off
19. unit operation exit the test mode Turn the fan on continuously at the ZSM by pressing the button with the fan symbol If the fan comes on and runs continuously the ZSM is good If you are not able to turn the fan on the ZSM is defective RLCI Loss of Communications If the RLCI loses input from the building management system the RTRM will control in the default mode after approximately 15 minutes If the RTRM loses the Heating and Cooling setpoint input the RTRM will control in the default mode instantaneously The temperature sensing thermistor in the Zone Sensor Module is the only component required for the Default Mode to operate 35 Maintenance Hazardous Voltage w Capacitors Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged For additional information regarding the safe discharge of capacitors see PROD SVBO6A EN NOTICE Operating Under Vacuu
20. with the corresponding thermostat installation instructions Install color coded weather proof multi wire cable according to the field wiring schematics see Field Wiring p 21 Electromechanical Controls Wiring shown with dashed lines is to be furnished and installed by the customer All customer supplied wiring must be copper only and must conform to NEC and local electrical codes Codes may require line of sight between disconnect switch and unit Note When electric heater accessory is used single point power entry or dual point power entry is field optional Single point power entry option is through electric heater only 20 Figure 12 Electromechanical jobsite connections Disconnect Switch By Others bon o Air Handler Electric DA Heat Accessory lt SS By Others Note 2 a pisconnect Switch By Others 3 power wires line voltage for 3 phase 2 power wires for single phase 3 power wires line voltage for 3 phase 2 power wires for single phase Cooling only thermostat 3 to 7 wires depending on stages of electric heat 3 to 7 wires depending type of outdoor unit s 0 gt ReliaTel Controls Wiring shown with dashed lines is to be furnished and installed by the customer All customer supplied wiring must be copper only and must conform to NEC and local electrical codes Codes may require line of sight bet
21. 5 T T T T T T 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 Liquid Temperature Leaving OD Coil F Liquid Temperature Leaving OD Coil F Figure 20 TTA120A charging curve Figure 22 TTA240B charging curve TTA120A Charging Curve TTA240B Charging Curve 425 400 375 Remove 399 Remove D 2 2 325 charge 5 5 2 300 o d 9 amp 275 o E S 250 c X 9 225 200 175 150 125 T T T T T T T T T T T T T T T T 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 Liquid Temperature Leaving OD Coil F Liquid Temperature Leaving OD Coil F Table 6 superheat with matched TWE air handler mom xs mem wmm 5s _ Notes 1 Anadjustable TXV is provided for each circuit in the TWE and TWA models If the application causes the superheat to deviate from the values shown above by more than 1 degree after the system has achieved steady state the TXV should be adjusted to provide the values shown as measured at the compressor 2 The values given above have been tested and are approved for the matched sets shown If an alternate combination is used an expansion device should
22. CO This control s sensor is located in the discharge line This device will shut off the compressor and the outdoor fan s if the discharge pressure exceeds the High Pressure Cut Out s setting Once the discharge pressure has returned to normal the compressor will cycle back on A WARNING Prevent Injury Due to agency safety requirements no schrader core is to be installed beneath the HPCO Removal of the HPCO without evacuating the system charge could cause injury and release of refrigerant Internal Overload Protector IOL This device is embedded in the compressor It will shut off the compressor if the discharge temperature of the compressor exceeds its design trip temperature Note The IOL will put the compressor back operation once the compressor motor heat has dropped below the trip setting however a check of the refrigerant and electrical systems should be made to determine the cause and be corrected SS SVX12C EN Start Up Electromechanical Controls The 24 volt electromechanical controls feature a control transformer and contactor pressure lugs for power wiring Once the unit is properly installed and pre start procedures are complete start the unit by turning the System Switch on the indoor thermostat to either HEAT COOL or AUTO The system should operate normally Equipment Damage Ensure the disconnect for the indoor air handler is closed before operating the system Operating
23. D 912 8 REFRIGERANT ACCESS OPTIONAL LINE VOLTAGE WITH HAIL GUARD 33 7 8 860 4 CONTROL WIRING 39 3 16 SERVICE PANEL 995 3 34 1 8 866 8 29 13 16 684 2 757 2 16 7 16 bs 417 5 365 1 y 1 16 1 59 6 152 4 2 7 8 73 SUCTION LINE 47 6 4015 16 LIQUID LINE 1039 8 41 15 16 1065 2 WITH HAIL GUARD SERVICE PANEL SIDE 3 76 2 a 7 16 11 11 DIA ISOLATOR MOUNTING HOLES OUTSIDE HOLES 4 PLACES 1 O 0060 0 40 3 4 BOTTOM 1 ee 882 6 OF UNIT A e o E 4 3 16 106 36 1 13 16 2 27 11 16 2 5 16 46 703 3 58 7 SS SVX12C EN 11 Dimensional Data Figure 4 10 ton condensing unit single compressor SEE NOTE 3 NOTES 1 ACCESS OPENING IS FOR FIELD INSTALLED BAYLOAM ACCESSORY 2 MINIMUM CLEARANCE FOR PROPER OPERATION IS 36 914 4 FROM WALLS SHRUBBERY PRIVACY FENCES ETC MINIMUM CLEARANCE BETWEEN ADJACENT UNITS IS 72 1828 8 RECOMMENDED SERVICE CLEARANCE 48 1219 2 3 TOP DISCHARGE AREA SHOULD BE UNRESTRICTED FOR 100 2540 MINIMUM UNIT SHOULD BE PLACED SO ROOF RUN OFF WATER DOES NOT POUR DIRECTLY ON UNIT 4 OUTDOOR AIR TEMPERATURE SENSOR OPENING DO NOT BLOCK OPENING SERVICE PANEL HAIL GUARD SEE NOTE 4 OPTIONAL SERVICE CLEARANCE 48 1219 2 SEE NOTE 2 FOR CLEARA
24. E IVIOU PEUT 6522445 ERE Structural Rooftop Mounting Ground Level Mounting Dimensional Data Weights Cooling Installation oed d pace Refrigerant Piping Guidelines Refrigerant Piping Procedures Outdoor IES oeste arr uo deeem ese Refrigerant Piping Procedures Indoor Leak Check RP ERES System Insulating and Isolating Refrigerant LANG S itera ates Refrigerant Charging Procedure Liquid Electrical Unit Power Low Voltage Wiring Electromechanical Controls ReliaTel Field Wiring Refrigerant Electrical Charging Charts Superheat Installation Refrigerant Electrical wit Control Circuit Features 28 Discharge Temperature Limit A
25. ERANT FLOW AND EXIT CIRCUITS NOTE B DUAL CIRCUIT MODELS HAVE 2 REFRIGERATION CIRCUITS 24 SS SVX12C EN Electrical Data Table 4 Electrical characteristics compressor and condenser fan motors 60 Hz Compressor Motor Motor Condenser Fan Motor Number Volts Volts LRA at mi t 9 208 230 22 4 164 1 208 230 1 3 1 8 1 TTA120A3 1 208 230 3 30 1 225 1 08 230 1 5 0 14 4 ee 180 3 208 230 22 4 164 2 208 230 2 5 0 14 4 os miae rus ss TTA240B3 208 230 30 1 225 208 230 2 5 0 14 4 TTA240B4 2 460 3 15 5 114 2 460 2 5 5 8 Note Electrical characteristics reflect nameplate values and are calculated in accordance with cULus and ARI specifications Table b Unit wiring condensing units 60 Hz Unit Model Unit Operating Minimum Circuit Maximum Fuse or HACR Number Voltage Range Ampacity Circuit Breaker Size TTA090A3 187 253 TTA0O90A4 414 506 TTA120A3 187 253 TTA120A4 414 506 TTA180B3 187 253 TTA240B3 187 253 Note HACR type circuit breaker per NEC SS SVX12C EN Charging Charts and Superheat Figure 19 TTAO090A charging curve Figure 21 TTA180B charging curve TTA090A Charging Curve TTA180B Charging Curve 425 400 375 Remove 230 Remove 2 charge 2 325 charge 5 300 3 amp amp 275 o 5 S 250 2 2 a 225 200 175 150 12
26. IDE NOM 28 Low Outdoor Ambient Cooling 28 Evaporator Defrost Control EDC us bead peres 28 Low Pressure Cut Out LPCO 28 High Pressure Cut Out HPCO 28 Internal Overload Protector Ile aera ee ete mee ge an ees E 28 Stan Up NEP Ra dua 29 Electromechanical Controls 29 29 Evaporator Fan Indoor Supply PAN ee 29 Cooling Mode 29 ReliaTel Controls 29 Control Cooling Mode 29 Control Evaporator Fan RARUS 30 Control Heating Operation 30 Service Test Modes for ReliaTel CONOS i 31 Test Modes 31 Step lest 31 Resistance Test Mode 31 Auto Test Mode 31 32 Troubleshooting ReliaTel Controls 32 System Status Checkout Procedure 32 Method T i AREA 32 Method 2 4 cma aatia boe 33 Resetting Cooling and Heating LOCKOULIS 225 I HIS ES A EA 33 Method T uu uer oe 33 Method 2 33 Zone Temperature Sensor ZTS Service sano CR arn 33 Temperature
27. Installation Operation and Maintenance Split System Air Conditioners Odyssey R 22 Dry Charge Cooling Condenser 75 10 15 and 20 Tons 60 Hz TTAO90A G 120 5 TTA180B TTA240B SAFETY WARNING Only qualified personnel should install and service the equipment The installation starting up and servicing of heating ventilating and air conditioning equipment can be hazardous and requires specific knowledge and training Improperly installed adjusted or altered equipment by an unqualified person could result in death or serious injury When working on the equipment observe all precautions in the literature and on the tags stickers and labels that are attached to the equipment January 2014 SS SVX12C EN FD ingersoit Introduction Read this manual thoroughly before operating or servicing this unit Warnings Cautions and Notices Safety advisories appear throughout this manual as required Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions The three types of advisories are defined as follows Indicates a potentially hazardous situation which if not avoided could result death or serious injury Indicates a potentially hazardous situation which if not avoided could result in minor or moderate injury It could also be used to alert against unsafe practices Indic
28. NCE SEE NOTE 1 39 15 16 1014 4 REFRIGERANT ACCESS HAIL GUARD 4 1 4 WITH HAIL GUARD OPTIONAL 108 31 7 LINE VOLTAGE 37 15 16 963 6 CONTROL WIRING 39 1 8 SERVICE PANEL 993 8 34 1 16 865 2 T 29 3 4 755 6 682 6 1 14 5 16 71 2 81 4 363 5 209 5 190 5 116 SUCTION LINE 1 6 1 718 ee 1 15 16 49 2 6 25 11 16 6 47 6 LIQUID LINE 152 4 652 5 152 4 L2 7 8 73 E Sn aeq dese 50 15 16 125 4 37 11 16 1294 957 3 51 15 16 1319 2 WITH HAIL GUARD SERVICE PANEL SIDE AM 7 16 11 1 DIA ISOLATOR MOUNTING HOLES OUTSIDE HOLES 4 PLACES 1 50 3 4 1289 3 4 BOTTOM OF UNIT 1136 6 3 13 16 96 8 23 16 5 31 11 46 1 11 16 55 6 804 9 42 9 12 SS SVX12C EN Dimensional Data 5 15 20 ton condensing unit dual compressor Kc SEE NOTE 2 ae LR m o9 SAS 2 SS SEE NOTE 3 SERVICE CLEARANCE 48 1219 2 SEE NOTE 1 FOR CLEARANCE SERVICE PANEL DETAIL A 95 7 16 2424 WITH HAIL GUARD 41 7 16 1052 5 HAIL GUARD OPTIONAL HAIL GUARD OPTIONAL 1 8 1146 2 C y 3 3 8 Bae SERVICE
29. ates a situation that could result in NOTICE equipment or property damage only accidents Important Environmental Concerns Scientific research has shown that certain man made chemicals can affect the earth s naturally occurring stratospheric ozone layer when released to the atmosphere In particular several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine Fluorine and Carbon CFCs and those containing Hydrogen Chlorine Fluorine and Carbon HCFCs Not all refrigerants containing these compounds have the same potential impact to the environment Trane advocates the responsible handling of all refrigerants including industry replacements for CFCs such as HCFCs and HFCs Important Responsible Refrigerant Practices Trane believes that responsible refrigerant practices are important to the environment our customers and the air conditioning industry All technicians who handle refrigerants must be certified The Federal Clean Air Act Section 608 sets forth the requirements for handling reclaiming recovering and recycling of certain refrigerants and the equipment that is used in these service procedures In addition some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants Know the applicable laws and follow them 02014 Trane All rights reserved WARNING Proper Field Wiring Grounding
30. be used that provides 16 20 F degrees of superheat measured at the compressor 3 Check and adjust superheat using this table then compare with charging chart to determine if charge corrections are necessary 26 SS SVX12C EN Installation Checklist Complete this checklist once the unit is installed to verify that all recommended procedures have been accomplished before starting the system Do not operate the system until all items covered by this checklist are complete Inspect unit location for proper required service clearances Inspect unit location for proper free air clearances Inspect unit location for secure level mounting position Refrigerant Piping Properly sized constructed liquid and suction lines connected to stubs at both the indoor and outdoor units Insulated the entire suction line SS SVX12C EN Insulated portions of liquid line exposed to extremes in temperature Performed initial leak test Evacuated each refrigerant circuit to 500 microns Charged each circuit with proper amount of R 22 Electrical Wiring Provided unit power wiring with disconnect to proper terminals in the unit control section Installed system indoor thermostat Installed system low voltage interconnecting wiring to proper terminals of outdoor unit indoor unit and system thermostat 27 Pre Start
31. e and or the unit Service Facts Field Installation wiring diagrams for accessories are shipped with the accessory Unit Power Supply The installer must provide line voltage circuit s to the unit main power terminals as shown by the unit wiring diagrams available through e Library or by contacting a local sales office or field wiring Power supply must include a disconnect switch in a location convenient to the unit Ground the unit according to local codes and provide flexible conduit if codes require and or if vibration transmission may cause noise problems Important All wiring must comply with applicable local and national NEC codes Type and location of disconnect switches must comply with all applicable codes WARNING Proper Field Wiring and Grounding Required Failure to follow code could result in death or serious injury field wiring MUST be performed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Use Copper Conductors Only Failure to use copper conductors could result in equipment damage as unit terminals are not designed to accept other types of conductors Low Voltage Wiring Mount the indoor thermostat zone sensor or Night Setback Panel NSB in accordance
32. econd after power up if all internal operations are okay Once the unit is properly installed and pre start procedures are complete start the unit by turning the System Switch on the indoor thermostat to either HEAT COOL or AUTO The system should operate normally NOTICE Equipment Damage Ensure the disconnect for the indoor air handler is closed before operating the system Operating the outdoor unit without the indoor fan energized can cause unit trip out on high pressure control and or liquid flood back to the compressor Control Cooling Mode For Zone Sensor Control When the system switch is set to the COOL position and the zone temperature rises above the cooling setpoint the RTRM energizes the compressor contactor provided the high and low pressure and the discharge temperature limit controls are closed When the compressor contacts close the compressor and the outdoor fan motor start to maintain the zone temperature to within 2 F of the sensor setpoint at the sensed location On units with dual circuits the second stage of cooling is initiated as a result of the Proportional Integral control algorithms calling for additional cooling 29 Start Up For Thermostat Control When the room thermostat system switch is positioned at COOL and the fan switch is at AUTO the RTRM energizes the compressor contactor provided the high and low pressure and the discharge temperature limit controls are closed When the co
33. ene oxygen or compressed air or mixtures containing them for pressure testing Do not use mixtures of a hydrogen containing refrigerant and air above atmospheric pressure for pressure testing as they may become flammable and could result in an explosion Refrigerant when used as a trace gas should only be mixed with dry nitrogen for pressurizing units SS SVX12C EN Installation WARNING Hazard of Explosion Failure to follow recommended safe leak test procedures could result in death or serious injury or equipment or property only damage Never use an open flame to detect gas leaks Use a leak test solution for leak testing After the brazing operation of refrigerant lines to both the outdoor and indoor unit is completed the field brazed connections must be checked for leaks Pressurize the system through the service valve with dry nitrogen to 200 psi Use soap bubbles or other leak checking methods to ensure that all field joints are leak free If not release pressure repair and repeat leak test System Evacuation 1 After completion of leak check evacuate the system 2 Attach appropriate hoses from manifold gauge to gas and liquid line pressure taps Note Unnecessary switching of hoses can be avoided and complete evacuation of all lines leading to sealed system can be accomplished with manifold center hose and connecting branch hose to a cylinder of R 22 and vacuum pump 3 Attach center hose
34. es e 22 should only be charged in the liquid state When possible always charge the refrigerant into the liquid line of the unit e Ifthe entire charge can t be charged into the liquid line the balance of the unit charge can be metered through a charging manifold set as liquid preferably through a schrader valve into the suction line to the compressor only while the compressor is running e Check and adjust superheat using Table 6 p 26 then re check charging charts to determine if charge corrections are necessary NOTICE Equipment Damage Never charge liquid refrigerant into the suction line of the unit with the compressor off Figure 11 Outdoor units refrigerant piping GAS LINE GAUGE PORT GAS LINE SERVICE VALVE LIQUID LINE GAUGE PORT LIQUID LINE SERVICE VALVE MANIFOLD GAUGES SS SVX12C EN Installation Table3 Estimated charge levels at ARI rated line lengths 25 feet Matched Set w TWEO90A 17 6 TTA180B w TWE180B 19 5 TTA240B w TWE240B 21 9 TTA120A w TWE120A 22 5 Liquid Charging This procedure is accomplished with the unit operating Electrical connections must be complete Do not proceed until the system is ready to operate Note The compressor access panel must be installed when the unit is running and being charged Manifold hoses must be routed through refrigerant gauge access hole s See Dimensional Data p 10 for specif
35. et or damaging the finish Before preparing the unit for lifting estimate the approximate center of gravity for lifting safety Because of placement of internal components the unit weight may be unevenly distributed See Weights p 14 for approximate unit weights The crated unit can be moved using a forklift of suitable capacity For lifting the unit attach lifting straps or slings securely to the lifting holes at each corner see unit drawings in Weights p 14 Use spreader bars to protect the unit casing from damage Test lift the unit to determine proper balance and stability Clearances Provide enough space around the unit to allow unrestricted access to all service points Refer to the Dimensional Data p 10 for unit dimensions and minimum required service and free air clearances Observe the following points to ensure proper unit operation 1 Do not install the unit under a low overhang Condenser discharge must not be restricted refer to notes in Dimensional Data drawings p 10 Important Do not obstruct condenser discharge air This can result in warm air recirculation through the coil 2 Do not locate the unit in a position where runoff water can fall into the fan discharge openings 3 Condenser intake air is supplied from three or four sides of the unit Adhere to the minimum required clearances given in unit dimensional drawings see Dimensional Data 10 SS SVX12C EN Unit
36. evel Mounting For ground level installation the unit base should be adequately supported and hold the unit near level The installation must meet the guidelines set forth in local codes The support should extend two inches beyond the unit base channels at all points The unit and support must be isolated from any adjacent structure to prevent possible noise or vibration problems Any ground level location must comply with required clearances given in the unit dimensional drawings see Dimensional Data p 10 Dimensional Data Figure 2 Height width and depth measurements Note Full dimensional data available on next pages 10 SS SVX12C EN Dimensional Data Figure3 75ton condensing unit single compressor SEE NOTE 3 NOTES 1 ACCESS OPENING IS FOR FIELD INSTALLED BAYLOAM ACCESSORY 2 MINIMUM CLEARANCE FOR PROPER OPERATION IS 36 914 4 FROM WALLS SHRUBBERY PRIVACY FENCES ETC MINIMUM CLEARANCE BETWEEN ADJACENT UNITS IS 72 1828 8 RECOMMENDED SERVICE CLEARANCE 48 1219 2 3 TOP DISCHARGE AREA SHOULD BE UNRESTRICTED FOR 100 2540 MINIMUM UNIT SHOULD BE PLACED SO ROOF RUN OFF WATER DOES NOT POUR DIRECTLY ON UNIT 4 OUTDOOR AIR TEMPERATURE SENSOR OPENING DO NOT BLOCK OPENING SERVICE PANEL SEE NOTE 4 HAIL GUARD OPTIONAL SERVICE CLEARANCE 48 1219 2 SEE NOTE 2 FOR CLEARANCE SEE NOTE 1 35 15 16 HAIL GUAR
37. he manifold valve for the line that is connected to the suction line service valve Disconnect the line from the gauge port on the valve SS SVX12C EN Refrigerant Piping Procedures Indoor Unit Once liquid and suction lines are complete to the refrigerant connections on the indoor unit remove the gauge port core s on the indoor unit connection stubs to release the dry nitrogen charge NOTICE Unit Damage Do not apply heat to remove seal caps until the gauge port cores have been removed If seal caps are intact application of heat may generate excessive pressure in the unit and result in damage to the coil or expansion valve 1 Remove both seal caps from the indoor unit connection stubs NOTICE Unit Damage Do not remove the seal caps from refrigerant connections or open the service valves until prepared to braze refrigerant lines to the connections 2 Turn on nitrogen supply Nitrogen enters through the liquid line gauge port 3 Brazethe liquid line connections Open the gauge port on the suction line and then braze the suction line to the connection stub Nitrogen will bleed out the open gauge port on the suction line 5 Shut off nitrogen supply Leak Check WARNING Hazard of Explosion Failure to follow these recommendations could result in death or serious injury or equipment or property only damage Use only dry nitrogen with a pressure regulator for pressurizing unit Do not use acetyl
38. ic locations WARNING Live Electrical Components Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury When it is necessary to work with live electrical components have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks 1 Turn on power to the unit Allow the system to run for 15 minutes to stabilize operating conditions 2 Measure airflow across the indoor coil Compare the measurements with the fan performance data in the Data Submittal or Service Facts Once proper airflow is established compare discharge pressure and liquid temperature to the Charging Charts p 26 Add or remove refrigerant liquid only as required to obtain correct discharge pressure and liquid temperature 3 Check suction line superheat and condenser sub cooling to ensure the unit is operating properly 4 Disconnect all power to the unit Important If the unit is charged and left without power until a later date the crankcase heater should be energized for a minimum of 8 hours prior to powering the compressor s SS SVX12C EN Liquid Line Vapor Line Diameter Diameter 1 375 1 3 8 1 375 1 3 8 WARNING Hazardous Voltage w Capacitors Failure to disconnect power and discharge capacitors before servicing could result in death or serious in
39. ilures are indicated use one of the TEST mode procedures described in the Service Test Modes chapter p 31 to start the unit This procedure will allow you to check all of the RTRM 32 outputs and all of the external controls relays contactors etc that the RTRM outputs energize for each respective mode Proceed to Step 6 6 Step the system through all of the available modes and verify operation of all outputs controls and modes problem in operation is noted any mode you may leave the system in that mode for up to one hour while troubleshooting Refer to the sequence of operations for each mode to assist in verifying proper operation Make the necessary repairs and proceed to Step 7 and Step 8 7 If abnormal operating conditions appear in the test mode exit the test mode by turning the power Off atthe main power disconnect switch 8 Referto the individual component test procedures if other microelectronic components are suspect System Status Checkout Procedure System Status is checked by using one of the following two methods Method 1 If the Zone Sensor Module ZSM is equipped with a remote panel with LED status indication you can check the unit within the space If the ZSM does not have LED s use Method 2 33 BAYSENSO10B BAYSENS011B BAYSENS119A BAYSENSO20A BAYSENSO21A BAYSENS023A BAYSENS109 BAYSENS110 all have the remote panel indication feature The LED descrip
40. jury Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged For additional information regarding the safe discharge of capacitors see PROD SVBO6A EN 5 Remove the charging system from the unit 6 Replace all panels Electrical Wiring WARNING Proper Field Wiring and Grounding Required Failure to follow code could result in death or serious injury field wiring MUST be performed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Field wiring consists of providing power supply to the unit installing the system indoor thermostat and providing low voltage system interconnecting wiring Access to electrical connection locations is shown in Dimensional Data p 10 Determine proper wire sizes and unit protective fusing requirements by referring to the unit nameplat
41. m Do not operate or apply power to the compressor while under a vacuum Failure to follow these instructions will result in compressor failure Perform all of the indicated maintenance procedures at the intervals scheduled This will prolong the life of the unit and reduce the possibility of costly equipment failure Monthly Conduct the following maintenance inspections once per month Check unit wiring to ensure all connections are tight and that the wiring insulation is intact Inspect the condenser coils for dirt and debris If the coils appear dirty clean them With the unit operating in the cooling mode check the suction and discharge pressures and compare them with Pressure Curve values in unit Service Facts Record these readings on the Maintenance Log 37 Annually Cooling Season The following maintenance procedures must be performed at the beginning of each cooling season to ensure efficient unit operation Perform all of the monthly maintenance inspections With the unit operating check unit superheat and record the reading in the Maintenance Log p 37 36 Remove any accumulation of dust and or dirt from the unit casing Remove corrosion from any surface and repaint Check the gasket around the control panel door to ensure it fits correctly and is in good condition to prevent water leakage
42. minals 2 and 4 on the Zone Sensor The possible switch combinations are listed in Table 9 p 34 with their corresponding resistance values Table 9 Test 3 system mode and fan selection Zone Sensor Unit Fan Resistance Valves Ohms Mode Local Unit Mode Local Fan Mode oam 09mm em 009 Test 3 System Mode and Fan Selection 34 SS SVX12C EN Test 4 LED Indicator Test SYS ON HEAT amp COOL WARNING Live Electrical Components Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury When it is necessary to work with live electrical components have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks Method 1 Testing the LED using a meter with diode test function Test both forward and reverse bias Forward bias should measure a voltage drop of 1 5 to 2 5 volts depending on your meter Reverse bias will show an Over Load or open circuit indication if LED is functional Method 2 Testing the LED with an analog Ohmmeter Connect Ohmmeter across LED in one direction then reverse the leads for the opposite direction The LED should have at least 100 times more resistance in reverse direction as compared with the forward direction If high resistance in both directions LED i
43. nd If 24 VAC is present the LPCs have not tripped If no voltage is present LPCs have tripped Simultaneous Heat and Cool Failure WARNING Live Electrical Components Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury When it is necessary to work with live electrical components have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks e Emergency Stop is activated Method 2 The second method for determining system status is done by checking voltage readings at the RTRM J6 The system indication descriptions and the approximate voltages are listed below System Failure Measure the voltage between terminals J6 9 amp J6 6 Normal Operation approximately 32 VDC System Failure less than 1 VDC approximately 0 75 VDC Test Mode voltage alternates between 32 VDC 0 75 VDC Heat Failure Measure the voltage between terminals J6 7 amp J6 6 SS SVX12C EN Troubleshooting Heat Operating approximately 32 VDC e Heat less than 1 VDC approximately 0 75 VDC Heating Failure voltage alternates between 32 VDC amp 0 75 VDC Cool Failure Measure the voltage between terminals J6 8 amp J6 6 Cool Operating approximately 32 VDC e Cool Off less than 1 VDC approximately 0 75 VDC Cooling Failure
44. ntacts of the compressor contactor close operation of the compressor and condenser fan begins The evaporator fan contactor also energizes on a call for cooling and initiates evaporator fan operation On units with dual circuits the second stage of cooling is initiated as a result of the 2 stage thermostat calling for additional cooling Note Irregular unit operation may occur when the unit is controlled with a triac switching thermostat Please review the approved thermostat vendor list for all recommended relay switching thermostats Control Evaporator Fan Operation When the fan selection switch is set to the AUTO position the RTRM energizes the evaporator fan relay coil approximately 1 second after energizing the compressor contactor coil in the cooling mode In the heating mode the RTRM energizes the evaporator fan relay coil approximately 1 second before energizing the electric heat contactors The RTRM de energizes the evaporator fan relay coil approximately 60 seconds on dual compressor units and 80 seconds on single compressor units after the 30 cooling requirement has been satisfied to enhance unit efficiency When the heating cycle is terminated the evaporator fan relay coil is de energized at the same time as the heater contactors When the fan selection switch is set to the ON position the RTRM keeps the evaporator fan relay coil energized for continuous fan motor operation Control Heating Operation Electric
45. o prevent possible noise or vibration problems be certain to isolate refrigerant lines from the building 2 All suction and hot gas bypass piping if installed should be insulated from the termination in the air handler to the condensing unit cabinet entry Failure to do so can cause condensate drip off and performance degradation 3 Prior starting a unit it is advisable to have the approved oils available in the event oil needs to be added to the system NOTICE Equipment Damage This is POE oil which readily absorbs moisture Always use new oil and never leave containers open to atmosphere while not in use Table 2 TTA approved oils Unit Model Number Approved Oils Trane Oil Part Number 00027 1 quart container 090 TTA120 TTA180 TTA240 For units equipped with compressors containing site glasses the oil level must be visible through the sight glass when the compressor is running under stabilized conditions and a few minutes after the compressor has stopped Refrigerant Charging Procedure If charging by weight refer to Table 3 p 18 for starting change If refrigerant adjustments are needed because of length of line refer to Charging Charts and Superheat 26 Charge by weight through the gauge port on the liquid line Once the charge enters the system backseat open the liquid line service valve and disconnect the charging line and replace the cap on the gauge port Not
46. of manifold gauges to vacuum pump NOTICE Operating Under Vacuum Do not operate or apply power to the compressor while under a vacuum Failure to follow these instructions will result in compressor failure 4 Evacuate the system to hold a 500 micron vacuum 5 Close off valve to vacuum pump and observe the micron gauge If gauge pressure rises above 500 microns in one minute then evacuation is incomplete or the system has a leak 6 If vacuum gauge does not rise above 500 microns in 10 minutes the evacuation should be complete NOTICE Equipment Damage Charge with access port on the liquid line service valve only 7 With vacuum pump and micron gauge blanked off open valve on R 22 cylinder and allow refrigerant pressure to build up to about 80 psig 8 Close valve on the R 22 supply cylinder Close valves on manifold gauge set and remove refrigerant charging hoses from liquid and gas 17 Installation gauge ports 9 Leaktestthe entire system Using proper procedures and caution as described in the previous section repair any leaks found and repeat the leak test Insulating and Isolating Refrigerant Lines Insulate the entire suction line with refrigerant piping insulation Also insulate any portion of the liquid line exposed to temperature extremes Insulate and isolate liquid and suction lines from each other Isolate refrigerant lines from the structure and any duct work Important 1 T
47. portfolio of advanced controls and HVAC systems comprehensive building services and parts For more information visit www IRCO com The manufacturer has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice 02014 Trane All rights reserved SS SVX12C EN 14 Jan 2014 We are committed to using environmentally ngersoll Rand Supersedes SS SVX12B EN July 2012 conscious print practices that reduce waste
48. proper safe refrigerant handling practices could result in death or serious injury Never solder braze or weld on refrigerant lines or any unit components that are above atmospheric pressure or where refrigerant may be present Always remove refrigerant by following the guidelines established by the EPA Federal Clean Air Act or other state or local codes as appropriate After refrigerant removal use dry nitrogen to bring system back to atmospheric pressure before opening system for repairs Mixtures of refrigerants and air under pressure may become combustible in the presence of an ignition source leading to an explosion Excessive heat from soldering brazing or welding with refrigerant vapors present can form highly toxic gases and extremely corrosive acids 4 Cut fit and braze tubing starting at the outdoor unit and work toward the indoor unit See recommended tube sizes Table 3 p 18 Note Use long radius ells for all 90 bends All brazing should be done using a 2 to 3 psig dry nitrogen purge flowing through the pipe being brazed see Figure 10 p 16 NOTICE System Component Damage Install a regulating valve between the nitrogen source and the gauge manifold Unregulated pressure can damage system components NOTICE System Component Damage Wet wrap all valves and protect painted surfaces from excessive heat Heat can damage system components and the unit finish 5 Shut off nitrogen supply Shut off t
49. r field wiring OUTDOOR SECTION TTA CONDENSER LTB RELIATEL RTRM J6 OUTDOOR INDOOR ZONE SENSOR CBAY 5 5010 gt ELECTRIC HEAT 25205 ACCESSORY INDOOR SECTION Figure 16 Thermostat field wiring OUTDOOR SECTION TTA CONDENSER LTB RELIATEL RTRM J7 OUTDOOR INDOOR THERMOSTAT TYPICAL MANUAL CHANGEOVER ELECTRIC B RH RC Y1 Ye G Wi We HEAT ACCESSORY INDOOR SECTION 22 SS SVX12C EN Installation Figure 17 Thermostat wiring for electromechanical units THERMOSTAT 1 O U Z Q Z O O B 9 UD lt N N EDC ELECTRIC SWITCH HEAT INDOOR SECTION ACCESSORY SS SVX12C EN 23 Installation Refrigerant Circuit Figure 18 Typical split system cooling refrigerant circuit COOLING ONLY CIRCUIT DIAGRAM DISCHARGE TEMPERATURE GAUGE MIT HIGH PRESSURE CONNECTION SWITCH HPCO NOTEA N A 40 lt 16 FIELD SUPPLIED INTER CONNECTING TUBING COMPRESSOR 1 EQUALIZER EXPANSION TUBE VALVEBULB 2 8 B GAUGE CONNECTION SERVICE VALVE _ 1 i V d J b ux LOW PRESSURE SWITCH LPCO SERVICE 8 VALVE a _ V FILTER DRIER NOTEA SUB COOLING CIRCUIT NOTE A ONLY ONE OUTDOOR AND INDOOR COIL REFRIGERANT ENTRY AND gt EXIT CIRCUIT IS SHOWN ALL INDICATES DIRECTION OF MODELS HAVE MULTIPLE ENTRY REFRIG
50. s open If low in both directions LED is shorted Method 3 To test LED s with ZSM connected to unit test voltages at LED terminals on ZSM A measurement of 32 VDC across an unlit LED means the LED has failed Important Measurements should be made from LED common ZSM terminal 6 to respective LED terminal Programmable amp Digital Zone Sensor Test Testing Serial Communication Voltage 1 Verify 24 VAC is present between terminals J6 14 amp SS SVX12C EN Troubleshooting J6 11 A WARNING Live Electrical Components Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury When it is necessary to work with live electrical components have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks 2 Disconnect wires from J6 11 and J6 12 Measure the voltage between J6 11 and J6 12 should be about 32 VDC 3 Reconnect wires to terminals J6 11 and J6 12 Measure voltage again between J6 11 and J6 12 voltage should flash high and low every 0 5 seconds The voltage on the low end will measure about 19 VDC while the voltage on the high end will measure from approximately 24 to 38 VDC 4 Verify all modes of operation by running the unit through all of the steps in Service Test Modes for ReliaTel Controls p 31 5 After verifying proper
51. ss the two test terminals The unit will remain in the specific test mode for approximately one hour even though the resistance is left on the test terminals o9 ow ew w The condenser fans will operate any time a compressor is ON D Steps for optional accessories and non applicable modes in unit will be skipped Auto Test Mode This method is not recommended for start up due to the short timing between individual component steps This method initiates the different components of the unit one at a time when a fixed jumper is installed across the test terminals SS SVX12C EN Off The unit will start the first test step and change to the next step every 30 seconds At the end of the test mode control of the unit will automatically revert to the applied System control method For unit test steps test modes and step resistance values to cycle the various components refer to Table 7 p 31 31 Troubleshooting Troubleshooting ReliaTel Controls WARNING Live Electrical Components Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury When it is necessary to work with live electrical components have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks The RTRM has the ability to provide the service
52. tand on the coil for five minutes Rinse both sides of the coil with cool clean water Inspect both sides of the coil if it still appears to be dirty repeat Step 7 and 8 9 Reinstall all of the components and panels removed in Step 1 then restore power to the unit 10 Using a fin comb straighten any coil fins that were inadvertently bent during the cleaning process SS SVX12C EN Maintenance Maintenance Log mT o 2 V 6 Oo m U F Qo gt 4 VY Superheat at compressor Discharge Pressure C1 mu VENE MEN NENNEN RENE NENNEN gt gt gt SS RENE 2 gt p p Compressor C2 Note Perform each inspection once per month during cooling season while unit is operating Suction Pressure lt o dd c dd gt Ambient SS SVX12C EN 37 Wiring Diagram Matrix Table 10 Wiring schematics R 22 cooling Note Wiring diagrams are available through e Library or by contacting your local sales office 38 SS SVX12C EN Notes SS SVX12C EN 39 The manufacturer optimizes the performance of homes and buildings around the world A business of Ingersoll Rand the leader in creating and sustaining safe comfortable and energy efficient environments the manufacturer offers a broad
53. tions are listed below e LED 1 System On during normal operation Off if a system failure occurs or the LED fails Flashing indicates test mode LED 2 Heat On when the heat cycle is operating Off when the heat cycle terminates or the LED fails Flashing indicates a heating failure ED3 Cool On when the cooling cycle is operating Off when the cooling cycle terminates or the LED fails Flashing indicates a cooling failure The following information describes the complete listing of failure indication causes SS SVX12C EN System Failure Check 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 Refer to Step 4 in the previous section for the recommended troubleshooting procedure Cooling Failure 1 Cooling and heating set point slide pot on the zone sensor has failed Refer to the Programmable amp Digital Zone Sensor Test p 35 2 Zone temperature thermistor ZTEMP on ZTS failed Refer to the Programmable amp Digital Zone Sensor Test p 35 3 CC1 or CC2 24 VAC control circuit has opened check CC1 amp CC2 coils and any of the controls below that apply to the unit HPC1 HPC2 DTL1 DTL2 4 LPC1 has opened during the minute minimum on time during 4 consecutive compressor starts check LPC1 or LPC2 by testing voltage between the J1 8 amp J3 2 terminals on the RTRM and grou
54. ust provide reasonable evidence that the damage did not occur after delivery Notify the carrier s terminal of damage immediately by phone and by mail Request an immediate joint inspection of the damage by the carrier and the consignee Notify the sales representative and arrange for repair Do not repair the unit until the damage is inspected by the carrier s representative Testing for Leaks units are shipped with a holding charge of nitrogen in each circuit and should be leak tested before installation 1 Remove the access panel 2 Locate the liquid line or suction line access valve for each circuit 3 Install gauges to determine if the circuits are still pressurized If not the charge has escaped and should be repaired as required to obtain a leak free circuit Lifting Recommendations WARNING Improper Unit Lift Failure to properly lift unit could result in unit dropping and possibly crushing operator technician which could result in death or serious injury and equipment or property only damage Test lift unit approximately 24 inches to verify proper center of gravity lift point To avoid dropping of unit reposition lifting point if unit is not level NOTICE Equipment Damage Use spreader bars to prevent straps from damaging the unit Install the bars between lifting straps both underneath the unit and above the unit to prevent the straps from crushing the unit cabin
55. ween disconnect switch and unit Notes 1 When electric heater accessory is used single point power entry or dual point power entry is field optional Single point power entry option 15 through electric heater only 2 Choose only one ofthe following Thermostat Zone Sensor or NSB Panel SS SVX12C EN Installation Figure 13 ReliaTel jobsite connections Disconnect Switch By Others Note 2 N Electric nd Heat Accessory ji T stat Zone NSB Panel Sensor Field Wiring Figure 14 Night setback panel field wiring TTA CONDENSER LTB INDOOR SECTION SS SVX12C EN Disconnect Switch By Others 3 power wires line voltage for 3 phase 2 power wires for single phase 3 power wires line voltage for 3 phase 2 power wires for single phase Cooling only thermostat 3 to 7 wires depending on stages of electric heat 3 to 7 wires depending on type of outdoor unit s Zone Sensor 4 to 10 wires depending on zone sensor model mons gt Night Setback Panel 7 wires For SZVAV air handlers 4 additional wires are required 2 of which require twisted pair or shielded wire in order to make connections between ReliaTel boards in the condenser and air handler By Others Note 2 OUTDOOR SECTION RELIATEL RTRM J6 OUTDOOR INDOOR NIGHT SETBACK PANEL 5 5019 ELECTRIC HEAT ACCESSORY 6 7 8 9 10 11 12 14 21 Installation Figure 15 Zone senso
56. y Use one of the following Test procedures to bypass some time delays and to start the unit at the control panel Each step of unit operation can be activated individually by temporarily shorting across the Test terminals for 2 to 3 seconds The system LED located on the RTRM module will blink when the test mode has been initiated The unit can be left in any Test step for up to one hour before it will automatically terminate or it can be terminated by opening the main power disconnect switch Once the test mode has been terminated the system LED will glow continuously and the unit will revert to the System control There are three methods in which the Service Test can be cycled at LTB Test 1 T1 and LTB Test 2 T2 Table7 Service test guide for component operation TEST STEP 1 Step Test Mode This method initiates the different components of the unit one at a time by temporarily shorting across the two test terminals for 2 to 3 seconds For the initial start up of the unit this method allows the technician to cycle a component On and have up to one hour to complete the check Service Test Mode will be ignored if a short is present across Test 1 and Test 2 at start up Resistance Test Mode This method can be used for start up when a decade box for variable resistance outputs is available This method initiates the different components of the unit one at a time when a specific resistance value is placed acro
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