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Trane 5TWX7024A1000A Installer's Manual
Trane 5TWX7024A1000A Installer's Manual

Trane 5TWX7024A1000A Installer's Manual

Multi-speed heat pumps and air conditioners

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Installer's Guide
TRANE Multi-Speed Heat Pumps and Air Conditioners
5TWX7024A1000A
5TWX7036A1000A
5TWX7048A1000A
5TWX7060A1000A
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.
March 2025
5TTX7024A1000A
5TTX7036A1000A
5TTX7048A1000A
5TTX7060A1000A
S S A A F F E E T T Y Y W W A A R R N N I I N N G G
O O D D R R - - S S V V N N 0 0 0 0 3 3 A A - - E E N N
N N o o t t e e : : "Graphics in this document are for representation
only. Actual model may differ in appearance."
N N o o t t e e : : R-454B refrigerant is an "A2L" refrigerant meaning:
A = nontoxic, 2 = flammable, L = low burning
velocity. The term "A2L" is used throughout this
document.

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Summary of Contents for Trane 5TWX7024A1000A

  • Page 1 Installer’s Guide TRANE Multi-Speed Heat Pumps and Air Conditioners 5TWX7024A1000A 5TTX7024A1000A 5TWX7036A1000A 5TTX7036A1000A 5TWX7048A1000A 5TTX7048A1000A 5TWX7060A1000A 5TTX7060A1000A N N o o t t e e : : “Graphics in this document are for representation only. Actual model may differ in appearance.”...
  • Page 2: Safety Section

    , , r r e e f f r r i i g g e e r r a a n n t t s s u u b b s s t t i i t t u u t t e e s s , , o o r r r r e e f f r r i i g g e e r r a a n n t t a a d d d d i i t t i i v v e e s s . . ODR-SVN003A-EN ©2025 Trane...
  • Page 3 N N o o t t e e : : See AHRI directory for approved indoor and outdoor model combinations. Only Trane coils R R i i s s k k o o f f F F i i r r e e — — F F l l a a m m m m a a b b l l e e R R e e f f r r i i g g e e r r a a n n t t ! !
  • Page 4 S S A A F F E E T T Y Y S S E E C C T T I I O O N N I I m m p p o o r r t t a a n n t t : : Use caution when cleaning outdoor coil to control panel.
  • Page 5: Table Of Contents

    Table of Contents Unit Location Considerations ....6 Electrical – Low Voltage Communicating ......24 Subcool Charging Correction Charts .
  • Page 6: Unit Location Considerations

    Unit Location Considerations P P i i p p i i n n g g G G u u i i d d e e l l i i n n e e s s accessible for inspection prior to being covered or enclosed.
  • Page 7 U U n n i i t t L L o o c c a a t t i i o o n n C C o o n n s s i i d d e e r r a a t t i i o o n n s s Table 4.
  • Page 8 U U n n i i t t L L o o c c a a t t i i o o n n C C o o n n s s i i d d e e r r a a t t i i o o n n s s 4 TON Vapor Line Liquid Line...
  • Page 9 U U n n i i t t L L o o c c a a t t i i o o n n C C o o n n s s i i d d e e r r a a t t i i o o n n s s Table 5.
  • Page 10: Charts

    U U n n i i t t L L o o c c a a t t i i o o n n C C o o n n s s i i d d e e r r a a t t i i o o n n s s Subcool Charging Correction Charts Figure 1.
  • Page 11: R-454B Refrigerant Charging Chart

    U U n n i i t t L L o o c c a a t t i i o o n n C C o o n n s s i i d d e e r r a a t t i i o o n n s s R-454B Refrigerant Charging Chart DESIGN SUBCOOLING (F) LIQUID TEMP...
  • Page 12 U U n n i i t t L L o o c c a a t t i i o o n n C C o o n n s s i i d d e e r r a a t t i i o o n n s s Table 6.
  • Page 13: Suggested Locations

    U U n n i i t t L L o o c c a a t t i i o o n n C C o o n n s s i i d d e e r r a a t t i i o o n n s s Suggested Locations Table 7.
  • Page 14: Unit Preparation

    Unit Preparation 1. Check for damage and report promptly to the carrier any damage found to the unit. 2. To remove the unit from the pallet, remove tabs by cutting with a sharp tool. Setting Up the Unit Table 9. Pad Installation When installing the unit on a support pad, such as a concrete slab, consider the following: •...
  • Page 15: Refrigerant Line Considerations

    Refrigerant Line Considerations Table 10. Factory Charge The outdoor condensing units are factory charged with the system charge required for the outdoor condensing unit, ten (10) feet of tested connecting line, and the smallest rated indoor evaporative coil match. Always verify proper system charge via subcooling (TXV/EEV). Table 11.
  • Page 16 R R e e f f r r i i g g e e r r a a n n t t L L i i n n e e C C o o n n s s i i d d e e r r a a t t i i o o n n s s Table 13.
  • Page 17 R R e e f f r r i i g g e e r r a a n n t t L L i i n n e e C C o o n n s s i i d d e e r r a a t t i i o o n n s s Table 16.
  • Page 18: Refrigerant Line Brazing

    Refrigerant Line Brazing Table 18. Braze the Refrigerant Lines Remove caps or plugs. Use a deburring tool to debur the pipe ends. Clean both internal and external surfaces of the tubing using an emery cloth. Remove the pressure tap cap, plastic tab and valve core from each service valves.
  • Page 19 R R e e f f r r i i g g e e r r a a n n t t L L i i n n e e B B r r a a z z i i n n g g Table 18.
  • Page 20: Refrigerant Line Leak Check

    Refrigerant Line Leak Check Table 19. Check for Leaks Important: The outdoor unit should not be tested higher than 450 PSIG for servicing or component replacement. The indoor unit and linesets should be tested to the max pressure specified on the outdoor or indoor unit nameplate. The service valves should be closed when pressure testing the indoor unit and linesets to separate the outdoor unit from the indoor unit.
  • Page 21: Refrigerant Line And Indoor Coil Evacuation

    R R e e f f r r i i g g e e r r a a n n t t L L i i n n e e L L e e a a k k C C h h e e c c k k Refrigerant Line and Indoor Coil Evacuation Important: Do not open the service valves until the refrigerant lines...
  • Page 22: Servicing

    R R e e f f r r i i g g e e r r a a n n t t L L i i n n e e L L e e a a k k C C h h e e c c k k Servicing When Servicing: •...
  • Page 23: Service Valves

    Service Valves Table 20. Open the Gas / Vapor Service Valve First 1/4 Turn Only Important: Leak check and evacuation must be completed before opening the service valves. Counterclockwise Note: Do not vent refrigerant gases into the atmosphere. for Full Open Position Remove valve stem cap.
  • Page 24: Communicating

    W connections together to get multiple stages of electric heat. 4. X2 is necessary if not using select Trane or American Standard thermostats. stages of electric heat. 4) For AC systems, O should be connected from the 4) For AC systems, O should be connected from the 5.
  • Page 25: Guidelines

    E E l l e e c c t t r r i i c c a a l l – – L L o o w w V V o o l l t t a a g g e e C C o o m m m m u u n n i i c c a a t t i i n n g g Refrigerant Detection System Guidelines •...
  • Page 26: Electrical - High Voltage

    Electrical – High Voltage Table 24. High Voltage Power Supply W W A A R R N N I I N N G G L L i i v v e e E E l l e e c c t t r r i i c c a a l l C C o o m m p p o o n n e e n n t t s s ! ! F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w a a l l l l e e l l e e c c t t r r i i c c a a l l s s a a f f e e t t y y p p r r e e c c a a u u t t i i o o n n s s w w h h e e n n e e x x p p o o s s e e d d t t o o l l i i v v e e e e l l e e c c t t r r i i c c a a l l c c o o m m p p o o n n e e n n t t s s c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y .
  • Page 27 E E l l e e c c t t r r i i c c a a l l – – H H i i g g h h V V o o l l t t a a g g e e Table 27.
  • Page 28: Led Indicators

    Integrated Variable Speed Control Board LED Indicators 24 VAC Program Defrost Force Personality Thermostat Port term Defrost Module Control Temp LSOV J2- J3 *Audit specific SEG1 status LED SEG2 Data fault LED Port J40 -J41 AOC-MOC Dis_T Coil_T TEST Interface *Audit specific.
  • Page 29: Start Up

    Start Up Ensure you have completed the following sections. “Refrigerant Line Brazing,” p. 18 through “Electrical – High Voltage,” p. 26 Set System Thermostat to OFF. Turn ON disconnect(s) to apply power to the indoor and outdoor units. Wait 20 minutes before starting the unit if the outdoor ambient temperature is below 85°...
  • Page 30: System Charge Adjustment

    System Charge Adjustment Table 28. Temperature measurements Check the outdoor temperatures. 120° F Subcooling in Cooling Mode is the only recommended method of charging between 55 ° F and 115° F ambient outdoor temperature. 55° F Confirm charge afterward by verifying subcooling. For best results the indoor temperature should be kept between 70°...
  • Page 31: Charging The Unit

    Charging the Unit Table 30. Proper Gauge Pressure Using the Standard R-454B Subcool Charging Chart, adjust refrigerant level to attain proper gauge pressure. Note: Use bubble point, per the included chart, for calculating subcooling. Add refrigerant if the Liquid Gauge Pressure is lower than the chart value.
  • Page 32: Charging Below 55º F Outdoor Temperature In Heating Mode

    Charging Below 55º F Outdoor Temperature in Heating Mode Table 34. Charging below 55º F outdoor temperature in heating mode The Subcooling Charging method in cooling is not recommended below 55º F outdoor temperature. The only recommended method of charging at outdoor temperatures below 55º F is weighing in the charge in heating mode. STEP 1 - Determine additional charge.
  • Page 33: Defrost Control (Heat Pump Only)

    Defrost Control (Heat Pump only) D D e e m m a a n n d d D D e e f f r r o o s s t t N N O O T T E E S S : : F F o o r r c c e e d d D D e e f f r r o o s s t t The demand defrost control measures heat pump 1.
  • Page 34: Checkout Procedures

    Checkout Procedures The final phase of the installation is the system Checkout Procedures. The following list represents the most common items covered in a Checkout Procedure. Confirm all requirements in this document have been met. ☐ All wiring connections are tight and properly secured. ☐...
  • Page 35: Symbols

    Symbols ODR-SVN003A-EN...
  • Page 36: Notices

    Notices F F C C C C N N o o t t i i c c e e I I C C N N o o t t i i c c e e Contains IC ID: 7922A-3025 Contains FCC ID: WAP3025 This device complies with part 15 of the FCC Rules.
  • Page 37 N N o o t t e e s s ODR-SVN003A-EN...
  • Page 38 N N o o t t e e s s ODR-SVN003A-EN...
  • Page 39 N N o o t t e e s s ODR-SVN003A-EN...
  • Page 40 The AHRI Certified mark indicates Trane U.S. Inc. participation in the AHRI Certification program. For verification of individual certified products, go to ahridirectory. org. Trane has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.
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