Trane Multi-Speed Heat Pumps and Air Conditioners Installer's Guide

Installer's Guide for TRANE models including: 5TWR7024A1000A, 5TWR7036A1000A, 5TWR7048A1000A, 5TWR7060A1000A, 5TTR7024A1000A, 5TTR7036A1000A, 5TTR7048A1000A, 5TTR7060A1000A, 5TWR7024A1000A Multi Speed Heat Pumps and Air Conditioners, 5TWR7024A1000A, Multi Speed Heat Pumps and Air Conditioners, Heat Pumps and Air Conditioners, and Air Conditioners, Air Conditioners, Conditioners

Search Results: PROD-SLB060-EN - Public

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18-BC123D1-1A-EN 09302024

Installer's Guide

TRANE Multi-Speed Heat Pumps and Air Conditioners

5TWR7024A1000A 5TWR7036A1000A 5TWR7048A1000A 5TWR7060A1000A

5TTR7024A1000A 5TTR7036A1000A 5TTR7048A1000A 5TTR7060A1000A

Note: "Graphics in this document are for representation only. Actual model may differ in appearance."
Note: R-454B refrigerant is an "A2L" refrigerant meaning: A = nontoxic, 2 = flammable, L = low burning velocity. The term "A2L" is used throughout this document.

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.

Sept 2024

18-BC123D1-1A-EN

SAFETY SECTION
Important This document contains a wiring diagram and service information. This is customer property and is to remain with this unit. Please return to service information pack upon completion of work.
Note: R454B refrigerant is a blend and should only be added to the system in liquid form.
WARNING
HAZARDOUS VOLTAGE!
Failure to follow this Warning could result in property damage, severe personal injury, or death. Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized.
WARNING
REFRIGERANT OIL!
Any attempt to repair a central air conditioning product may result in property damage, severe personal injury, or death. Use only R-454B approved service equipment. All R-454B systems with variable speed compressors use variable speed compressor oil that readily absorbs moisture from the atmosphere. To limit this "hygroscopic" action, the system should remain sealed whenever possible. If a system has been open to the atmosphere for more than 4 hours, the compressor oil must be replaced. Never break a vacuum with air and always change the driers when opening the system for component replacement.
CAUTION
HOT SURFACE!
May cause minor to severe burning. Failure to follow this Caution could result in property damage or personal injury. Do not touch top of compressor.
CAUTION
CONTAINS REFRIGERANT!
Failure to follow proper procedures can result in personal illness or injury or severe equipment damage. System contains oil and refrigerant under high pressure. Recover refrigerant to relieve pressure before opening system.

WARNING
P65 WARNING!
This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
CAUTION
GROUNDING REQUIRED!
Failure to inspect or use proper service tools may result in equipment damage or personal injury. Reconnect all grounding devices. All parts of this product that are capable of conducting electrical current are grounded. If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened.
WARNING
SERVICE VALVES!
Failure to follow this warning will result in abrupt release of system charge and may result in personal injury and/or property damage. Extreme caution should be exercised when opening the Suction and Liquid Line Service Valve. Turn valve stem counterclockwise only until the stem contacts the rolled edge. No torque is required.
WARNING
BRAZING REQUIRED!
IF BRAZING - Make certain that all joints are brazed, not soldered. IF USING MECHANICAL CONNECTIONS - Ensure leak test is negative. Failure to inspect lines or use proper service tools may result in equipment damage or personal injury.
WARNING
HIGH LEAKAGE CURRENT!
Failure to follow this Warning could result in property damage, severe personal injury, or death. Earth connection essential before connecting electrical supply.

18-BC123D1-1A-EN

WARNING
RISK OF FIRE!
Flammable refrigerant used. To be repaired only by trained service personnel. Do not puncture refrigerant tubing. Dispose of properly in accordance with federal or local regulations. Flammable refrigerant used.
CAUTION
WARNING!
Use ONLY R-454B rated indoor models, service equipment and components with these units.
WARNING
VENTILATION!
Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work.

SAFETY SECTION

Note: See AHRI directory for approved indoor and outdoor model combinations. Only Trane coils and air handlers are approved for use with multi-speed outdoor unit.
Table 1. Operating Range

Mode Cooling Heating

Model 2 5 Ton 2 5 Ton

Operating Range 55 °F 115°F 0° F 66°F

WARNING
400 VOLTS
ELECTRICAL HAZARD
Failure to follow this warning could result in personal injury or death.
WAIT TWO (2) MINUTES after disconnecting power prior to touching electrical components as they may hold a dangerous charge of 400VDC, then verify DC Voltage is less than 42 VDC at inverter test points labeled +DC and -DC before servicing board.
DC- DC+

18-BC123D1-1A-EN

SAFETY SECTION
Important: Use caution when cleaning outdoor coil to ensure no water enters the electrical control compartment. When cleaning coil from inside the compressor compartment, take special care not to spray water towards the top rows of the coil near the

control panel. Water may enter the control compartment and drive damaging the electronics. Disconnect all electric power, including remote disconnects before servicing.

18-BC123D1-1A-EN

Table of Contents
Unit Location Considerations . . . . . . . . . . . . . . . 6 Subcool Charging Correction Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 R-454B Refrigerant Charging Chart . . . . . . . . 11 Refrigerant Properties. . . . . . . . . . . . . . . . . . . . 11 Suggested Locations. . . . . . . . . . . . . . . . . . . . . 13 Coastal Considerations. . . . . . . . . . . . . . . . . . . 13
Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Setting Up the Unit . . . . . . . . . . . . . . . . . . . . . . 14
Refrigerant Line Considerations . . . . . . . . . . . 15
Refrigerant Line Brazing . . . . . . . . . . . . . . . . . . . 18
Refrigerant Line Leak Check . . . . . . . . . . . . . . . 20 Refrigerant Line and Indoor Coil Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Service Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Electrical Low Voltage Communicating . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Refrigerant Detection System Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Electrical High Voltage . . . . . . . . . . . . . . . . . . . 26
Integrated Variable Speed Control Board LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
System Charge Adjustment . . . . . . . . . . . . . . . 29
Charging the Unit. . . . . . . . . . . . . . . . . . . . . . . . . . 30
Charging Below 55º F Outdoor Temperature in Heating Mode . . . . . . . . . . . . . 31
Defrost Control (Heat Pump only). . . . . . . . . . 32
Checkout Procedures . . . . . . . . . . . . . . . . . . . . . . 33
Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

18-BC123D1-1A-EN

Unit Location Considerations

Piping Guidelines
Piping material, pipe routing, and installation shall include protection from physical damage in operation and service, and be in compliance with national and local codes and standards. All field joints shall be

accessible for inspection prior to being covered or enclosed. Install of pipe work shall be kept to a minimum. Provisions shall be made for expansion and contraction of long runs of piping.

Table 2. Unit Dimensions and Weight

Models

H x D x W (in)

5TWR7024A

41 x 30 x 33

5TWR7036A

41 x 30 x 33

5TWR7048A

41 x 34 x 37

5TWR7060A

41 x 34 x 37

5TTR7024A

41 x 30 x 33

5TTR7036A

41 x 30 x 33

5TTR7048A

41 x 34 x 37

5TTR7060A

41 x 34 x 37

* Weight values are estimated (uncrated).

Weight * (lb) 181 194 231 241 176 189 226 236

W H

· When mounting the outdoor unit on a roof, be sure the roof will support

the unit's weight.

· Properly selected isolation is recommended to alleviate sound or

vibration transmission to the building structure.

Table 3. Refrigerant Line and Service Valve Connection Sizes

Model
5TWR7024A 5TWR7036A 5TWR7048A 5TWR7060A 5TTR7024A 5TTR7036A 5TTR7048A 5TTR7060A

Rated Line Sizes

Vapor Line 3/4 (a), (b)
3/4 (a), (b) 7/8 (a), (b)
7/8 (a), (b)

Liquid Line 5/16 5/16
5/16
5/16

3/4 (a), (b)

5/16

3/4 (a), (b)

5/16

7/8 (a), (b)

5/16

7/8 (a), (b)

5/16

Service Valve Connection Sizes

Vapor Line Connection

Liquid Line Connection

3/4

5/16

3/4

5/16

7/8

5/16

7/8

5/16

3/4

5/16

3/4

5/16

7/8

5/16

7/8

5/16

Line Length
Line Lift

Refer to (a), (b), and (c) footnotes for specific model details

Line Length
Line Lift

(a) For max length of refrigerant lines from outdoor to indoor unit refer Table 4. (b) Select correct line set size in set up app. Default is set to alternate line sizes.
6

18-BC123D1-1A-EN

Unit Location Considerations

Table 4. Lineset sizes and length

2 TON AND 3 TON

Vapor Line

Liquid Line

Length

Lift

1/2

5/16

100

5/8

5/16

150

3/4

5/16

100

1/2

3/8

100

5/8

3/8

150

3/4

3/8

100

Note:

Ratings/Primary

Legacy Lineset

Smallest Allowed

Diameter

2 TON AC (HP) Subcooling Adders

Liquid

30 5/16
20

Note: 3/8 line sizes do not require any additional subcool adders.

100 0 0 0 0 0 0

125 0 0 0 0 0 0

150 1 0 0 0 0 0

Diameter

3 TON AC (HP) Subcooling Adders

Liquid

30 5/16
20

Note: 3/8 line sizes do not require any additional subcool adders.

100 0 0 0 0 0 0

125 0 0 0 0 0 0

150 0 0 0 0 0 0

18-BC123D1-1A-EN

Unit Location Considerations

Vapor Line 5/8 3/4 7/8 5/8 3/4 7/8

Note:

Ratings/Primary Legacy Lineset Smallest Allowed

Liquid Line 5/16 5/16 5/16 3/8 3/8 3/8

4 TON

Length 100 100 100 100 150 150

Diameter

4 TON AC (HP) Subcooling Adders

Liquid

30 5/16
20

Note: 3/8 line sizes do not require any additional subcool adders.

Vapor Line 5/8 3/4 7/8 5/8 3/4 7/8

Note:

Ratings/Primary Legacy Lineset Smallest Allowed

Liquid Line 5/16 5/16 5/16 3/8 3/8 3/8

5 TON

Length 100 100 100 100 150 150

Diameter

Liquid

30 5/16
20

5 TON AC (HP) Subcooling Adders

100 0*3/8 0*3/8
0 0 0 0
100 2*3/8 2*3/8
0 0 0 0

Lift 25 25 25 50 25 25

125

150

0*3/8 0 0 0

Lift 25 25 25 50 25 25

125

150

2*3/8 0 0 0

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Unit Location Considerations

Table 5. Alternate Refrigerant Line and Service Valve Connection Sizes

Model
5TWR7024A 5TWR7036A 5TWR7048A 5TWR7060A

Alternate Line Sizes

Vapor Line
3/4"
3/4" 7/8" 7/8"

Liquid Line
3/8" 3/8" 3/8" 3/8"

Service Valve Connection Sizes

Vapor Line Connection

Liquid Line Connection

3/4" 3/4" 7/8" 7/8"

5/16" 5/16" 5/16" 5/16"

Model 5TTR7024A

Alternate Line Sizes

Vapor Line
3/4"

Liquid Line 3/8"

5TTR7036A 5TTR7048A 5TTR7060A

3/4" 7/8" 7/8"

3/8" 3/8" 3/8"

For max length of refrigerant lines from outdoor to indoor unit refer Table 4.

Service Valve Connection Sizes

Vapor Line Connection

Liquid Line Connection

3/4" 3/4" 7/8" 7/8"

5/16" 5/16" 5/16" 5/16"

18-BC123D1-1A-EN

Unit Location Considerations
Subcool Charging Correction Charts

REFRIGERANT LINE LIFT (FEET)

Figure 1. Subcool Charging Corrections 2.0 Ton

2.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) - 5/16" LINE SET DIAMETER

+2SC

Use Design Subcooling

100 125 150

TOTAL REFRIGERANT LINE LENGTH (FEET)

Note: For systems with 3/8" line set diameters, use
design subcooling for all length and lift combinations.

REFRIGERANT LINE LIFT (FEET)

Figure 2. Subcool Charging Corrections 3.0 Ton

3.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) - 5/16" LINE SET DIAMETER

Use Design Subcooling

with 5/8 vapor line

0 10 20 30 40 50 60 75 100 125 150

TOTAL REFRIGERANT LINE LENGTH (FEET)

REFRIGERANT LINE LIFT (FEET)

Figure 3. Subcool Charging Corrections 4.0 Ton

4.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) - 5/16" LINE SET DIAMETER

Use Design Subcooling

with 5/8 vapor line

and 3/8 liquid line

20
10 Use Design Subcooling
0

Use Design Subcooling with 3/4 vapor line and 3/8 liquid line

100 125 150

TOTAL REFRIGERANT LINE LENGTH (FEET)

Figure 4. Subcool Charging Corrections 5.0 Ton

5.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) - 3/8" LINE SET DIAMETER

+2SC

Use Design Subcooling

with 5/8 vapor line

+2SC

10 Use Design Subcooling
0

Use Design Subcooling with 3/8 liquid line

100 125 150

TOTAL REFRIGERANT LINE LENGTH (FEET)

18-BC123D1-1A-EN

Unit Location Considerations

R-454B Refrigerant Charging Chart

LIQUID TEMP (F)

DESIGN SUBCOOLING (F)

LIQUID GAGE PRESSURE (PSIG)

170

172

175

178

181

184

187

184

187

190

194

197

200

203

200

203

206

210

213

217

220

217

220

223

227

230

234

238

234

238

241

245

249

252

256

252

256

260

264

268

272

276

272

276

280

284

288

292

297

292

297

301

305

309

314

318

314

318

323

327

332

336

341

100

336

341

346

351

355

360

365

105

360

365

370

375

380

385

390

110

385

390

396

401

406

412

417

115

412

417

422

428

433

439

445

120

439

445

450

456

462

468

474

125

468

474

480

486

492

498

504

Note: When charging to Subcooling values, use Bubble Temp chart. If referencing Superheat, use Dew Point chart.

Refrigerant Properties

Table 6. Refrigerant Properties (continued)

Table 6. Refrigerant Properties

Pgauge (psig)
30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140

Superheat Dew Table (°F)
-12 -7 -2 2 6 10 13 17 20 23 26 29 31 34 37 39 41 44 46 48 50 52 54

Subcooling Bubble Table (°F)
-14 -9 -4 0 4 7 11 14 18 21 24 26 29 32 34 37 39 41 44 46 48 50 52

Pgauge (psig)
145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 240 245 250 255 260

Superheat Dew Table (°F)
56 58 60 62 64 66 67 69 71 72 74 75 77 78 80 81 83 84 86 87 88 90 91 92

Subcooling Bubble Table (°F)
54 56 58 60 61 63 65 67 68 70 71 73 75 76 78 79 80 82 83 85 86 87 89 90

18-BC123D1-1A-EN

Unit Location Considerations

Table 6. Refrigerant Properties (continued)

Pgauge (psig)
265 270 275 280 285 290 295 300 305 310 315 320 325 330 335 340 345 350 355 360 365 370 375 380 385 390 395 400 405

Superheat Dew Table (°F)
94 95 96 97 99 100 101 102 103 104 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124

Subcooling Bubble Table (°F)
91 93 94 95 96 97 99 100 101 102 103 104 105 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122

Table 6. Refrigerant Properties (continued)

Pgauge (psig)
410 415 420 425 430 435 440 445 450 455 460 465 470 475 480 485 490 495 500 505 510 515 520 525 530 535 540 545 550

Superheat Dew Table (°F)
125 126 127 128 128 129 130 131 132 133 134 134 135 136 137 138 139 139 140 141 142 143 143 144 145 146 146 147 148

Subcooling Bubble Table (°F)
123 124 125 125 126 127 128 129 130 131 132 132 133 134 135 136 137 137 138 139 140 141 141 142 143 144 145 145 146

18-BC123D1-1A-EN

Suggested Locations
Table 7. Suggested Locations for Best Reliability
· Ensure the top discharge area is unrestricted for at least 5 feet above the unit.
· Provide at least 3 feet clearance in front of the control box (access panels) and any other side requiring service.
· Do not locate close to bedrooms as operational sounds may be objectionable.
· Avoid locations near windows and similar areas where condensation and freezing defrost vapor can annoy a customer.
· Position the outdoor unit a minimum of 12" from any wall or surrounding shrubbery to ensure adequate airflow.
· Outdoor unit location must be far enough away from any structure to prevent excess roof runoff water or icicles from falling directly on the unit.
· Position the outdoor unit a minimum of 12" from any wall or surrounding shrubbery to ensure adequate airflow.
· Outdoor unit location must be far enough away from any structure to prevent excess roof runoff water or icicles from falling directly on the unit.

Unit Location Considerations

Avoid Install Near Bedrooms
Min. 12" to Shrubbery

Min 5' Unrestricted
Min 3' Unrestricted
Access Panel

Min. 12" to Shrubbery

Min. 12" to Wall

Table 8. Cold Climate Considerations (Heat Pump Only)

Note: It is recommended that these precautions be taken for units being installed in areas where snow accumulation and prolonged below-freezing temperatures occur.
· Units should be elevated 312 inches above the pad or rooftop, depending on local weather. This additional height will allow drainage of snow and ice melted during defrost cycle prior to its refreezing. Ensure that drain holes in unit base pan are not obstructed, preventing drainage of defrost water.
· If possible, avoid locations that are likely to accumulate snow drifts. If not possible, a snow drift barrier should be installed around the unit to prevent a build-up of snow on the sides of the unit.

Min. 12"
Snow Barrier

Snow Legs
3-12" Elevation Pad

Coastal Considerations

If installed within one mile of salt water, including seacoasts and inland waterways, models without factory supplied Seacoast Salt Shields require the addition of BAYSEAC001 (Seacoast Kit) at installation time.

18-BC123D1-1A-EN

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: · The pad should be at least 1" larger than the unit on all sides. · The pad must be separate from any structure. · The pad must be level. · The pad should be high enough above grade to allow for drainage. · The pad location must comply with National, State, and Local
codes.

18-BC123D1-1A-EN

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. Required Refrigerant Line Length
Determine required line length and lift. You will need this to determine the subcooling charging corrections later in the installation process. Total Line Length = ___________________________Ft. Total Vertical Change (lift) = ____________________Ft.
Line Length

Table 12. Refrigerant Line Insulation

Important: The Vapor Line must always be insulated. DO NOT allow the Liquid Line and Vapor Line to come in direct (metal to metal) contact.

Liquid Line

Note: The Vapor Line must always be insulated. Insulating the liquid line through attic spaces may benefit system performance by minimizing heat gain in the liquid line.

Vapor Line

Insulation

18-BC123D1-1A-EN

Refrigerant Line Considerations
Table 13. Reuse Existing Refrigerant Lines
CAUTION
REFRIGERANT!
Failure to inspect or use proper service tools may result in equipment damage or personal injury. If using existing refrigerant lines make certain that all joints are brazed, not soldered.
For retrofit applications, where the existing indoor evaporator coil and/or refrigerant lines will be used, the following precautions should be taken. · Ensure that the indoor evaporator coil and refrigerant lines are
the correct size. · Ensure that the refrigerant lines are free of leaks, acid, and oil. Important: For more information, see publication number SS-
APG006EN

Table 14. Refrigerant Line Routing Precautions
Important: Comply with National, State, and Local Codes when isolating line sets from joists, rafters, walls, or other structural elements. Important: For buried linesets, see publication number SS-APG006EN. Important: Take precautions to prevent noise within the building structure due to vibration transmission from the refrigerant lines.
For Example: · When the refrigerant lines must be fastened to floor joists or other framing in a structure, use isolation type hangers. · Isolation hangers should also be used when refrigerant lines are run in stud spaces or enclosed ceilings. · Where the refrigerant lines run though a wall, sill or enclosed ceiling- they should be insulated, isolated and serviceable if any braze
connections are present. · Isolate the lines from all duct work. · Minimize the number of 90° turns.

Table 15. Isolation From Joist/Rafter

8 Feet Maximum

Joist/Rafter

Isolator

Side View

8 Feet Maximum

Line Set

Secure Vapor Line from joists using isolators every 8 ft. Secure Liquid Line directly to insulated Vapor Line using tape, wire, or other appropriate method every 8 ft.

18-BC123D1-1A-EN

Table 16. Isolation In Wall Spaces

Refrigerant Line Considerations

8 Feet Maximum

Wall Isolator

Side View

8 Feet Maximum

Line Set

Secure Vapor Line from joists using isolators every 8 ft. Secure Liquid Line directly to insulated Vapor Line using tape, wire, or other appropriate method every 8 ft.

Table 17. Isolation Through Wall
Wall

Sealant Insulation Vapor Line

Duct Work Isolator

Line Set DO NOT hang line sets from duct work

18-BC123D1-1A-EN

Refrigerant Line Brazing
Table 18. Braze the Refrigerant Lines
1. 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.
2. Remove the pressure tap cap, plastic tab and valve core from each service valve.
3. Purge the refrigerant lines and indoor coil with dry nitrogen. Note: A2L equipment shall have red marked service ports and pipes through which refrigerant is serviced.

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Table 18. Braze the Refrigerant Lines (continued)
4. Wrap a wet rag around the valve body to avoid heat damage and continue the dry nitrogen purge.
5. Braze the refrigerant lines to the service valves. a. For Units shipped with a field-installed external drier, check liquid line filter drier's directional flow arrow to confirm correct direction of refrigeration flow (away from outdoor unit and toward evaporator coil) as illustrated. Braze the filter drier to the Liquid Line.
6. Continue the dry nitrogen purge. Do not remove the wet rag until all brazing is completed.
Important: Remove the wet rag before stopping the dry nitrogen purge.
Note: Precautions should be taken to avoid heat damage to base pan during brazing. It is recommended to keep the flame directly off of the base pan.
7. Replace the pressure tap valve cores and plastic tabs after the service valves have cooled.

Refrigerant Line Brazing
3-4" from valve

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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.
1. Final Pressure Check - Isolate the outdoor unit from the indoor unit and linesets using the service valves. Pressurize the indoor unit and linesets to the max pressure specified on the outdoor or indoor unit nameplate for a minimum of 60 minutes. Do not add additional refrigerant or test gas after reaching the indoor unit specified pressure. The system should show no loss of pressure once pressurized. Once the pressure test is complete follow the steps for evacuation.
*OPTIONAL (Preliminary Pressure Check) Pressurize the indoor unit and linesets to 150 PSIG using dry nitrogen.

2. Check for leaks by using a soapy solution at each brazed location.
Note: Remove nitrogen pressure and repair any leaks before continuing.

Flow Rate CuFt/Hr
15 30 60

< 50 feet 2 Minutes 1 Minute 1 Minute

Nitrogen Purge Times

Lineset Length

< 100 feet

< 150 feet

4 Minutes 2 Minutes 1 Minute

6 Minutes 3 Minutes 2 Minutes

< 200 feet 8 Minutes 4 Minutes 2 Minutes

18-BC123D1-1A-EN

Refrigerant Line and Indoor Coil Evacuation
Important: Do not open the service valves until the refrigerant lines and indoor coil leak check and evacuation are complete.
1. Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the vacuum pump.
2. Observe the micron gauge. Evacuation is complete if the micron gauge does not rise above 1500 microns in ten (10) minute.
3. When evacuation is complete, blank off the vacuum pump and micron gauge, and close the valves on the manifold gauge set.

Refrigerant Line Leak Check
0350
Microns ON OFF
10 MIN.

Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. The following leak detection methods are deemed acceptable for all refrigerant systems: · Electronic leak detectors calibrated for R454B · Bubble method
If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut off valves) in a part of the system remote from the leak.

18-BC123D1-1A-EN

Refrigerant Line Leak Check

Servicing

When Servicing:
· The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially toxic or flammable atmospheres.
· Ensure that the leak detection equipment being used is suitable for use with all applicable refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe.
· Work shall be undertaken under a controlled procedure so as to minimize the risk of a flammable gas or vapor being present while the work is being performed.
· If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire extinguishing equipment shall be available on hand.
· Have a dry powder or CO2 fire extinguisher adjacent to the servicing area.
· Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work.
· A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
Important: The following leak detection methods are deemed acceptable for all refrigerant systems:
1. Electronic leak detectors calibrated for R454B
2. Bubble method
Important: Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks.
· If a leak is suspected, all naked flames shall be removed/extinguished.
· If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut off valves) in a part of the system remote from the leak.
· If repairs must be made after the system is charged, properly and safely remove or isolate refrigerant and purge the section of the system needing repair with inert gas or oxygen free nitrogen prior to opening the circuit.
· The refrigerant charge shall be recovered into the correctly marked recovery cylinders. Ensure that the outlet for the vacuum pump is not close to any potential ignition sources and that ventilation is available.
· Nitrogen purge chart:

Flow Rate CuFT/Hr 15 30 60

< 50 feet 2 Minutes 1 Minute 1 Minute

Nitrogen Purge Times

Lineset Length

< 100 feet

< 150 feet

4 Minutes

6 Minutes

2 Minutes

3 Minutes

1 Minute

2 Minutes

< 200 feet 8 Minutes 4 Minutes 2 Minutes

· Ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge is available. Only use cylinders designated for the recovered refrigerant and labelled for that refrigerant. Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working order.
· A calibrated weighing scale shall be available and in good working order. Hoses shall be complete with leak-free disconnect couplings and in good condition. Ensure any associated electrical components are sealed.
· The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder. Do not mix refrigerants.
· If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that FLAMMABLE REFRIGERANT does not remain within the lubricant.

18-BC123D1-1A-EN

Service Valves

Table 20. Open the Gas / Vapor Service Valve First

Important: Leak check and evacuation must be completed before opening the service valves.
Note: Do not vent refrigerant gases into the atmosphere.

Cap

1. Remove valve stem cap.
2. Using a wrench, turn valve stem 1/4 turn counterclockwise to the fully open position.
3. Replace the valve stem cap to prevent leaks. Tighten finger tight plus an additional 1/4 turn.
Note: Valve caps need to be brass or locking style.
Note: Opening the Vapor service valve first ensures the compressor oil stays in the compressor at start up.

Unit Side of Valve

1/4 Turn Only Counterclockwise for Full Open Position
Valve Stem

Pressure Tap Port Gas Line Connection

Table 21. Open the Liquid Service Valve

Cap
WARNING

SERVICE VALVES!

Failure to follow this warning will result in abrupt release of system charge and may result in personal injury and/or property damage.
Extreme caution should be exercised when opening the Suction and Liquid Line Service Valve. Turn valve stem counterclockwise only until the stem contacts the rolled edge. No torque is required.

Unit Side of Service Valve

Important: Leak check and evacuation must be completed before opening the service valves.
4. Remove service valve cap.
5. Fully insert 3/16" hex wrench into the stem and back out counterclockwise until valve stem just touches the rolled edge (approximately five (5) turns).
6. Replace the valve cap to prevent leaks. Tighten finger tight plus an additional 1/4 turn.

Service Port

3/16" Hex Wrench
Rolled Edge to Captivate Stem
Hex Headed Valve System

18-BC123D1-1A-EN

Electrical Low Voltage Communicating

Table 22. Low Voltage Maximum Wire Length
This table defines the size and combined total maximum length of low voltage wiring from the outdoor unit, to the indoor unit, and to the thermostat.
Note: The use of color coded low voltage wire is recommended to simplify connections between the outdoor unit, the control, and the indoor unit.

WIRE SIZE

CONTROL WIRING MAX. WIRE LENGTH

18 AWG

500 Ft. Combined

Table 23. Low Voltage Hook-up Diagrams

With Furnace

Thermostat

R 24 VAC HOT

FAN

24 VAC Common

B/C O

COOL

HEATING

W1
3)
W2

Evaporator Coil MCB

BKi

Furnace
R G B O Y1
3)
Y2
W1 W2
3)
BK

Outdoor Unit
R

1) Units with pigtails require wirenuts for

connections. Cap all unused wires.

2) For 24V control, connect factory supplied

harness to circuit board at evaporator.

Complete all other wiring connections at the furnace

3) AC systems will not utilize O and X2

3)
Y2

With 5TEM6

Thermostat

Air Handler

Outdoor Unit

R 24 VAC HOT

FAN

24 VAC Common

B/C

B
Blue

Y COOL/HEAT
1st STAGE

With 5TEM4

Thermostat

Air Handler

Outdoor Unit

R 24 VAC HOT

FAN

24 VAC Common

B/C

B
Blue

Y COOL/HEAT
1st STAGE

HEATING 1st STAGE
HEATING 2nd STAGE

W1
5)
W2

Yo W1
White
W2
Pink

Y1 X2

BK
WH/BLK

1) Units with pigtails require wirenuts for connections. 2) Cap all unused wires. 3) When BK is used, do not connect Y2 at the air handler. 4) When BK is used, cut the jumper between R and BK on the control board. See indoor wiring schematic for details. 5) In AC systems, for multiple stages of electric heat, jumper W1 and W2 together if comfort control has only one stage of heat. 6) AC systems will not utilize O and X2

HEATING 1st STAGE
HEATING 2nd STAGE

W1
3)
W2

Y2 Yo W1
White
W2
Pink

Y2 Y1 X2

1) Units with pigtails require wirenuts for connections. 2) Cap all unused wires. 3) In AC systems, for multiple stages of electric heat, jumper W1 and W2 together if comfort control has only one stage of heat. 4) AC systems will not utilize O and X2

With 5TAM5

Thermostat

Air Handler

Outdoor Unit

R 24 VAC HOT

FAN

24 VAC Common

B/C

B
Blue

Y COOL/HEAT
1st STAGE

Y COOL/HEAT
2nd STAGE

HEATING 1st STAGE
HEATING
2nd STAGE.

W1
3)
W2

W3 HEATING
3rd STAGE Brown

Yo W1
White
W2
Pink
W3
Brown

Y1 X2

1) Units with pigtails require wire nuts for connections. 2) Cap all unused wires. 3) In AC systems, for multiple stages of electric heat, jumper W and W2 together if comfort control has only one stage of heat. 4) AC systems will not utilize O and X2

18-BC123D1-1A-EN

Electrical Low Voltage Communicating
Refrigerant Detection System Guidelines
· The approved ID/OD combination will provide sufficient safe ventilation in case of a leak. · Refer Indoor Unit Installer's Guide for correct specifications on indoor unit install. · All systems require Refrigerant Detection Systems. · RDS (Refrigerant Detection System) included in an A2L System.

18-BC123D1-1A-EN

Electrical High Voltage
Table 25. High Voltage Power Supply
WARNING
LIVE ELECTRICAL COMPONENTS!
Failure to follow this Warning could result in property damage, severe personal injury, or death. Follow all electrical safety precautions when exposed to live electrical components. It may be necessary to work with live electrical components during installation, testing, servicing, and troubleshooting of this product.
The high voltage power supply must agree with the equipment nameplate. Power wiring must comply with national, state, and local codes. Follow instructions on unit wiring diagram located on the inside of the control box cover and in the Service Facts document included with the unit.
Table 26. High Voltage Disconnect Switch
WARNING
HIGH LEAKAGE CURRENT!
Failure to follow this Warning could result in property damage, severe personal injury, or death. Earth connection essential before connecting electrical supply.
WARNING
REMOVE POWER!
Remove power when servicing.
Install a separate disconnect switch at the outdoor unit. For high voltage connections, flexible electrical conduit is recommended whenever vibration transmission may create a noise problem within the structure.
Table 27. High Voltage Disconnect Switch
Ground the outdoor unit per national, state, and local code requirements.

Table 28. Cabling
WARNING
CABLING SAFETY!
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects.

18-BC123D1-1A-EN

Integrated Multi-Speed Control Board LED Indicators

J4 24 VAC Thermostat Control

J16

J11

Personality Program

Module

Port

JP1 S6 Defrost Force Term Defrost Temp

J17 LSOV
J5 EEV
SEG1 status LED SEG2 fault LED

J2 - J3 FB
J19 Data Port

J21 AMB

J22 Dis_T

J23 Coil_T

J40 - J41 TEST

J8 AOC - MOC
Interface

· Multi-speed units display the status and faults via two 7-segment LED displays on the drive AOC. · If multiple faults are present, the 7-segment LED displays will cycle through the faults.
· The digital display also offers a diagnostics mode to cycle through historical faults.

Trane Multi-Speed Status/Fault List

Value 0 1 2 3 4 5 6 7 8 9 A b C d E F H P

1st Digit - Status Standby Starting Low Speed High Speed Boost Speed Limp Mode Preheating Defrosting De-rate Oil-Return Software Error Fault Hard lock -

2nd Digit - Faults No Fault MOC Fault MOC Communication Fault Compressor Internal Protection (IOL/OLP) Compressor Overcurrent Protection Outdoor Fan Overcurrent Protection High Preheat IPM Temperature Protection High Coil Temperature Protection High Discharge Temperature Protection High MOC Compressor IPM Temperature Outdoor Ambient Temperature Sensor Fault AOC Jumper Pin Engaged Coil Temperature Sensor Fault Discharge Temperature Sensor Fault High MOC PFC Temperature Protection High MOC Fan IPM Temperature Protection Pressure Protection (High or Low)

18-BC123D1-1A-EN

Start Up
1. Ensure you have completed the following sections. "Refrigerant Line Brazing," p. 18 through "Electrical High Voltage," p. 26 2. Set System Thermostat to OFF.

3. Turn ON disconnect(s) to apply power to the indoor and outdoor units.
4. Wait 20 min before starting the unit if the outdoor ambient temperature is below 85° F.

ON OFF
20 min

18-BC123D1-1A-EN

System Charge Adjustment
Table 30. Temperature Measurements
Check the outdoor temperatures. Subcooling in Cooling Mode is the only recommended method of charging between 55 ° F and 115° F ambient outdoor temperature. Confirm charge afterward by verifying subcooling.
For best results the indoor temperature should be kept between 70° F to 80° F.

115° F 55° F
66° F 0° F

Table 31. Subcooling Charging Corrections
Determine the final subcooling value using total Line Length and Lift measured in "Required Refrigerant Line Length" and the "Subcooling Charging Corrections Charts".

Subcooling Charging Correction Worksheet

Total Line Length (ft)

________________________

Total Vertical Charge (lift) ________________________ (Values from -- Required Refrigerant Line Length)

Design Subcooling Value ________________________ (from nameplate or Service Facts)

Final Subcooling Value ________________________

Note: Outdoor Temperature must be between 55°F and 115°F with Indoor Temperature kept between 70°F and 80°F. If starting up incolder conditions, will need to return when the conditions are correct to validate refrigerant charge.

18-BC123D1-1A-EN

Charging the Unit

Table 32. Proper Gage Pressure
Using the Standard R-454B Subcool Charging Chart, adjust refrigerant level to attain proper gage 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. 1. Connect gauges to refrigerant bottle and unit as illustrated. 2. Purge all hoses. 3. Place refrigerant bottle on a scale and then open bottle. 4. Stop adding refrigerant when liquid line temperature and Liquid
Gauge Pressure match the charging chart. Note: Recover refrigerant if the Liquid Gauge Pressure is higher than the chart value.
Note: Ensure that contamination of different refrigerants does not occur when using charging equipment. Cylinders shall be kept in an appropriate position according to the instructions. Ensure that the REFRIGERATING SYSTEM is earthed prior to charging the system with refrigerant.

Table 33. Stabilize the system
5. Wait 20 minutes for the system condition to stabilize between adjustments.
Note: When the Liquid Line Temperature and Gauge Pressure approximately match the chart, the system is properly charged.
6. Remove gauges. 7. Replace service port caps to prevent leaks. Tighten finger tight
plus an additional 1/6 turn.

20 MIN.

Table 34. System Information

8. Record system pressures and temperatures after charging is complete.

Outdoor model number =

________________________

Measured Outdoor Ambient = ________________________°F

Measured Indoor Ambient = ________________________°F

Measured Liquid Line Temp = ________________________°F

Measured Suction Line Temp = ________________________°F

Table 35. Total System Charge

Indoor Wet Bulb =

________________________°F

Liquid Gauge Pressure = ________________________ PSIG

Suction Gauge Pressure = ________________________ PSIG

9. Complete the "Total System Charge" chart rating label below and label located on the outside of the unit with a permanent marker.

a. Charge added at Factory =

___________________lb/oz

b. Charge added at install =

___________________lb/oz

c. Total System Charge (a + b) = ___________________lb/oz

18-BC123D1-1A-EN

Charging Below 55º F Outdoor Temperature in Heating Mode

Table 36. 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.
Note: The nameplate charge value represents the amount of refrigerant shipped in the outdoor unit and is compatible with 10 feet of AHRI rated refrigerant lines and the smallest AHRI rated coil.
Using the method below, find the charge associated with the additional length of tubing above 10 ft. and record it below.
Calculating Charge Using the Weigh-In Method
1. Measure in feet the distance between the outdoor unit and the indoor unit. (Include the entire length of the line from the service valve to the IDU.) Subtract 10 ft from this entire length and record on line 1.
2. Enter the charge multiplier (0.47 oz./ft for 3/8" & 0.30 oz./ft for 5/16").
3. Multiply the total length of refrigerant tubing (Line 1) times the value on Step 2. Record the result on Line 3 of the Worksheet.
4. This is the amount of refrigerant to weigh-in prior to opening the service valves.

Weigh-In Method can be used for the initial installation, or anytime a system charge is being replaced. Weigh-In Method can also be used when power is not available to the equipment site or operating conditions (indoor/outdoor temperatures) are not in range to verify with the subcooling charging method.
1. Total Line length (ft) 10 ft _______________ 2. Charge multiplier = for 3/8", use .47 oz. per foot and for 5/16",
use .30 oz. per foot 3. Step 1 x Step 2 = ______________ 4. Refrigerant (oz) = ______________

STEP 2 - Stabilize the system by operating for a minimum of 20 minutes.
At startup, or whenever charge is removed or added, the system must be operated for a minimum of 20 minutes to stabilize before accurate measurements can be made.

20 MIN.

STEP 3 - Complete the "Total System Charge" chart rating label below and label located on the outside of the unit with a permanent marker.

Note: Complete the "Total System Charge" chart when final charging is complete.

a. Charge added at Factory =

___________________lb/oz

b. Charge added at install =

___________________lb/oz

c. Total System Charge (a + b) = ___________________lb/oz

STEP 4 - Return to site for adjustment. Important: Return in the spring or summer to accurately charge the system in cooling mode with outdoor ambient above 55º F.

18-BC123D1-1A-EN

Defrost Control (Heat Pump only)

Demand Defrost
The demand defrost control measures heat pump outdoor ambient temperature with a sensor located outside the outdoor coil. A second sensor located on the outdoor coil is used to measure the coil temperature. The difference between the ambient and the colder coil temperature is the difference or delta-T measurement. This delta-T measurement is representative of the operating state and relative capacity of the heat pump system. By measuring the change in delta-T, we can determine the need for defrost. The coil sensor also serves to sense outdoor coil temperature for termination of the defrost cycle.
Fault Identification A fault condition is indicated by the LED display on the control board
Defrost Enabled
Demand Defrost is enabled with the following inputs to the Integrated Control:
· Outdoor ambient temperature sensor (ODS-B) reporting an outdoor temperature at or below 50° F.
· Heating demand from the thermostat for a specific time period

NOTES: Forced Defrost 1. System must be running with demand from the
thermostat. 2. Forced defrost can be initiated in heat mode only. 3. Press and hold the forced defrost button on the control . board for over 5 seconds. 4. When forced defrost begins the LED display will show . a 7 as the first digit.
Note: The defrost termination temperature can be increased by clipping the defrost termination jumper pin.

Defrost Initiation
The calculated temperature difference between the outdoor temperature sensor and the coil temperature sensor is called Delta T. Defrost can occur once the current Delta T exceeds the Delta T initiate value. This adaptive logic assures a complete defrost for a range of outdoor temperatures.
DEFROST TERMINATION PROFILES

WARNING
DEFROST CONTROL!
· Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. · The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance or an operating electric heater). · Do not pierce or burn. · Be aware that refrigerants may not contain an odor.

18-BC123D1-1A-EN

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.
Voltage and running current are within limits.
All refrigerant lines (internal and external to equipment) are isolated, secure, and not in direct contact with each other or structure.
All braze connections have been checked for leaks. A vacuum of 350 microns provides confirmation that the refrigeration system is leak free and dry. Additional refrigerant weight is recorded on a label by the unit nameplate.

Supply registers and return grilles are open, unobstructed, and air filter is installed.
Indoor blower and outdoor fan are operating smoothly and without obstruction.
Indoor airflow should be configured per indoor installer's guide.
Verify blower and fan set screws are tight.

Final unit inspection to confirm factory tubing has not shifted during shipment. Adjust tubing if necessary so tubes do not rub against each other or any component when unit runs.

Cover panels are in place and properly tightened. System functions safely and properly in all modes.

Ductwork is sealed and insulated.
All drain lines are clear with joints properly sealed. Pour water into drain pan to confirm proper drainage. Provide enough water to ensure drain trap is primed.

Owner has been instructed on use of system and given manual. ENSURE Refrigerant Leak Detection system is operational.
ENSURE refrigerant quantity is marked on OD unit.

18-BC123D1-1A-EN

Symbols

18-BC123D1-1A-EN

Notices
FCC Notice
Contains FCC ID: WAP3025
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be collocated or operating in conjunction with any other antenna or transmitter. This equipment has been tested and found to comply with the limits for Class B Digital Device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures.
· Reorient or relocate the receiving antenna
· Increase the separation between the equipment and receiver
· Connect the equipment into an outlet on a circuit different from that to which the receiver is connected
· Consult the dealer or an experienced radio/TV technician for help
Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

IC Notice
Contains IC ID: 7922A-3025
This device complies with Industry Canada license exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
Le present appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de license. L'exploitation est autorisée aux deux conditions suivantes: (1) l'appareil de doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

18-BC123D1-1A-EN

Trane - by Trane Technologies (NYSE: TT), a global innovator - creates comfortable, energy efficient indoor environments for commercial and residential applications. For more information, please visit trane. com or tranetechnologies.com.

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.

18-BC123D1-1A-EN 30 Sept 2024 Supersedes NEW

References

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