Trane Automobile Parts X39640516 01 User Manual

Installation

and

Maintenance

Manual

CLCH-IM-16A

Library

Service Literature

Air Handling

Product Section

Product

Central Station Air Handlers

T-Series Climate Changer

Installation/Maintenance

Model

Literature Type

Sequence

Date

March 1999

File No.

CLCH-IM-16A 3/99

T-Series Climate

Changer^®Central

Station Air Handlers

Draw-Thru and Blow-Thru Unit Sizes 3, 6, 8, 10, 12, 14, 17, 21, 25, 30,

35, 40, 50, 66, 80, and 100

Part No. X39640516-01

Since the Trane Company has a policy of continuous product improvement, it reserves the right to change

specifications and designs without notice. The installation and servicing equipment referred to into this book-

let should be done by qualified experienced technicians.

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Table of Contents

General Information ............................................. 1

Unit Description .................................................. 1

Operating Environment ....................................... 1

Unit Nameplates ................................................. 1

Controls .............................................................. 2

Receiving .............................................................. 3

Storage Considerations ...................................... 3

Rigging and Handling .......................................... 4

Determine Unit Weights ...................................... 4

Lifting Instructions ............................................. 12

Installation .......................................................... 15

Unit Assembly .................................................... 16

General ............................................................. 16

Unit Assembly - All Sizes .................................. 16

Component Installation Requirements ............. 22

Fan Section ...................................................... 22

Set-Up ................................................................. 25

Duct Connections ............................................. 28

Drain Pan .......................................................... 30

Coil Piping And Connections ............................ 32

Refrigerant Coil Piping ...................................... 46

General Refrigerant Piping Recommendations 47

Wiring ............................................................... 49

Installation Checklist ......................................... 51

Prestart-Up Checks .......................................... 51

Start-Up ............................................................... 53

Start-Up Procedures ......................................... 53

Periodic Maintenance ........................................ 59

Drain Pans ........................................................ 60

Air Filters .......................................................... 60

Fans .................................................................. 61

Fan Bearings and Motors ................................. 61

Coil Cleaning .................................................... 63

Coil Winterization .............................................. 65

Troubleshooting ................................................. 66

T-Series Climate Changer

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Trane T-Series Climate Changers ship as complete

assemblies or sectional subassemblies. Some

assembly is required when the units ship as

subassemblies.

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Unit Description

Operating Environment

Trane T-Series Climate Changers^®are Central

Station Air Handlers designed for a variety of air

handling applications. The basic unit consists of a

fan, heating and/or cooling coils, filters, and

dampers. See the sales catalog (CLCH-DS-9) for a

list of available options and components.

The T-Series Climate Changer (TSC) is an outdoor

air handler. When considering the placement of the

TSC it is important to consider the operating

environment. The acceptable ambient temperature

range for unit operation is -40° to +140°F (-40°C to

60°C).

The fan is internally isolated. Fans available are

double-width, double-inlet Centrifugal types with

forward curved, backward inclined, or airfoil blade

type design; single-width, single-inlet Plug Fans or

Vane-Axial Q Fans^®. Fans are available in low,

medium, and high pressure classes with or without

inlet guide vanes.

For heating applications a special motor may be

required to withstand the higher temperatures.

Motors with Class “B” insulation are acceptable for

ambient temperatures up to 104°F while motors with

class “F” insulation can withstand ambient

temperatures to +140° F (60°C).

NOTE: IT IS RECOMMENDED THAT THE CUSTOMER

PROVIDE ADEQUATE FREEZE PROTECTION FOR THE

COILS.

UNITS WITH UL APPROVAL HAVE A MAXIMUM

AMBIENT TEMPERATURE REQUIREMENT OF 104°F.

To insure fan stability, the unit ships with four (4) lock-

down devices that prevent the fan from shifting

during shipment and installation. These spacers

must be removed prior to fan operation to assure

proper vibration isolation.

Unit Nameplates

The units are available with factory-mounted controls

for stand-alone operation or operation with a

complete building automation system. This includes

factory-mounted starters, DDC controllers, and end

devices.

Each unit section is provided with a section

nameplate (label). See Figure 1 . This nameplate

includes type of section, section serial number,

customer tagging information, section position and

service model number.

Figure 1

Unit Nameplate

Type of Section

Section Serial Number

Customer Furnished

Tagging Information

Section Service

Model Number

Section Unit

Number

Sales Order

Number

Installation and Maintenance

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NOTE: THIS SECTION WILL PROVIDE A BRIEF

OVERVIEW OF THE OPTIONAL FACTORY MOUNTED

CONTROLS. FOR MORE IN-DEPTH UNDERSTANDING

OF THE PROGRAMMABLE CONTROL MODULE (PCM),

REFERENCE INSTALLATION GUIDE EMTX-IN-11A,

APPLICATION GUIDE EMTX-AG-1, OPERATORS’

GUIDE EMTX-OG-4, INSTALLATION OPERATION AND

PROGRAMMING GUIDE CLCH-IOP-1 AND

Each section of a T-Series Climate Changer is

identified with a multi-character model number and

serial number. The model number precisely identifies

a particular section. Refer to model number and

serial number when ordering parts or requesting

service.

If the unit ships as individual sections or section

subassemblies refer to the nameplate for customer

tagging information and section position to insure

proper placement of the sections during assembly.

INSTALLATION OPERATION AND MAINTENANCE

MISC-IOM-5.

Most control components are mounted inside the

units. Depending on system configuration, these

controls may include damper actuators, dirty filter

switches, averaging temperature sensors, low limit

switches, point temperature switches, and inlet guide

vane actuators. Variable frequency drives, starters,

PCMs, control transformers, static pressure

transducers, DC power supplies, customer interface

relays, etc. will be in enclosures mounted on the

inside of the unit.

Controls

Wiring Sizes and Connections

Entrances are provided for field installation of high

and low voltage wiring through a pipe/nipple

connection in the base of the unit. The low and high

voltage connections are on opposite sides of the unit

on sizes 3 - 50 and on the same side for sizes 66 -

100.

Small items that cannot be factory-mounted will ship

inside the control enclosures. These controls may

include space temperature sensors, outside air

temperature sensors, and humidity sensors.

CAUTION

The high and low voltage wire

raceways for the T-series units are

intended for factory wiring ONLY.

Do not use these raceways for

field uses. Failure to follow these

instructions can result in damage

to the unit.

All control valves will ship directly to the “ship to

address” from the vendor, unless another address

was given on the order.

All constant volume or variable air volume control

systems are provided with 120 to 24 VAC control

transformers. Unless ordered with a factory-

mounted/wired starter or variable frequency drive,

the customer must provide 120 VAC control power,

50/60 hz, typically 3 amps for unit sizes 3 - 50, and 5

amps for unit sizes 66 -100. A dedicated 15 amp

circuit is recommended.

Wiring to the unit must be provided by the installer

and must comply with all national and local electrical

codes. The motor nameplate includes a wiring

diagram. If there are any questions concerning the

wiring of the motor be sure to take the motor

manufacturer’s name, model number, and serial

number and contact your local Trane representative

for assistance.

A T-Series Climate Changer unit and/or field-installed

accessories that must be stored for a period of time

prior to being installed MUST be protected from the

elements. The PCM and all other electrical/electronic

components should be stored in conditions of -20 -

120°F and 5 - 95% relative humidity non-condensing.

Electrical components ARE NOT moisture-tolerant

Factory Mounted Controls

NOTE: FOR MORE IN-DEPTH UNDERSTANDING OF

THE PROGRAMMABLE CONTROL MODULE (PCM)

REFERENCE INSTALLATION GUIDE EMTX-IN-11A,

APPLICATION GUIDE EMTX-AG-1, OPERATORS

GUIDE EMTX-OG-4, INSTALLATION, OPERATION AND

PROGRAMMING GUIDE CLCH-IOP-1, AND

INSTALLATION, OPERATION AND MAINTENANCE

MISC-IOM-5.

The warranty will not cover damage to the unit or

controls due to negligence during storage. A

controlled indoor environment is recommended for

proper storage. For further storage considerations,

refer to “Storage Considerations” in the next section.

The T-Series Climate Changer is available with a

wide array of factory mounted controls. They include

the Programmable Control Module (PCM), motor

starters, and Variable Frequency Drives (VFD).

CLCH-IM-16A

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3 Keep damaged material in the same location as it

was received. It is the receiver’s responsibility to

provide reasonable evidence that the concealed

damage was not incurred after delivery.

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4 Notify the Trane sales representative of the

damage and arrange for repair. Do not attempt to

repair the unit without consulting the sales

representative. TRANE IS NOT RESPONSIBLE

FOR SHIPPING DAMAGE.

The T-Series Climate Changer can ship as individual

sections, section subassemblies, or a complete air

handler. Sizes 3 - 100 have an integral base rail.

Upon receipt of the unit(s) and prior to unloading,

inspect the unit for damage and verify that the

shipment is complete. Delivery cannot be refused.

Storage Considerations

General

Inspection

The Trane T-Series Climate Changer air handler is

an outdoor unit and requires no special protection for

storage before installation. Keep the equipment in

the original shipping container for protection and

ease of handling. The warranty will not cover

damages to the unit due to negligence during

storage.

1 Visually inspect components for any damage that

may have occurred during shipment.

NOTE: THE TRANE COMPANY IS NOT RESPONSIBLE

FOR SHIPPING DAMAGE.

2 Check all access doors to confirm that the latches

and hinges are not damaged.

For longer periods of storage, allow enough

clearance around the unit to perform periodic

inspection and maintenance of the equipment. In

addition, loosen belt tension on drive belts.

3 Check all coil connections to confirm they are

straight and undamaged.

4 Inspect the coils for damage to the fin surface or

coil connections.

Long Term Storage

5 Check all devices attached to the unit exterior and

confirm that they are not damaged.

Every two weeks, rotate the fan and motor shaft thirty

revolutions by hand. Check for free rotation.

6 Manually rotate the fan wheel to ensure free

movement of the shaft, bearings, and drive.

Inspect the fan housing for any foreign objects.

Every six months, check fan shaft bearings and

grease lines. Add grease using a manual grease gun

following the lubrication recommendations in the

Periodic Maintenance section.

7 Inspect the interior of each section for any internal

damage as soon as possible after delivery.

Concealed damage must be reported within 15

days of receipt.

Check the motor lubrication; remove and clean

grease plugs and check for the presence of moisture

in the grease. If moisture is present, remove the

motor and send it to an authorized repair shop for

bearing inspection/replacement. If no moisture is

present, refer to the motor manufacturer’s lubrication

recommendation for proper lubrication.

8 If the unit was ordered with Factory Mounted

Controls, locate all sensors. These components

will be shipped inside the control enclosure.

9 If the unit shipped in subassemblies, locate

assembly hardware. The necessary assembly

hardware will be packaged inside the fan section

or the mixing section.

Resolving Shipping Damage

The T-Series Climate Changer ships FOB. If damage

has occurred to the unit sections during shipment,

the following instructions should be completed:

1 Make specific notation describing the damage on

the freight bill.

2 Report all claims of shipping damage to the

delivering carrier immediately.

Installation and Maintenance

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CAUTION

Do NOT lift from the top of the unit.

Lift only from lift lugs located at

the bottom of the unit. Use all lift

lugs provided. Failure to do so can

damage the unit.

The unit will be shipped (as specified by sales order)

as 1) a complete assembly, 2) in sub-assemblies

(collection of sections), or 3) as individual sections.

Follow appropriate lift warnings as shown on the

label affixed to the unit.

Determine Unit Weights

WARNING

Weights in this manual are approximate. Always test-

lift the unit section to check for proper balance and

rigging before hoisting to the desired location.

Never bolt (assemble) sections or

sub-assemblies together before

rigging. Always rig subassem-

blies or sections as received from

the factory.

When preparing to lift sections, estimate the

equipment’s approximate weight and center of

gravity. Refer to the tables listed below and placed on

the following pages. Due to placement of internal

components, the weight of the unit may be unevenly

distributed, with more weight being present in the fan

and coil areas)

Table 1

T-Series Section Weights (lb) - Unit Sizes 3 - 50

Trane Unit Size

225

314

232

377

105

242

270

419

115

279

367

582

134

355

109

242

285

218

393

637

145

380

122

261

323

235

443

677

154

399

130

290

372

266

490

740

167

431

140

312

426

284

526

827

187

477

157

338

511

317

624

902

201

562

164

355

579

334

100

132

221

361

687

933

1025 1148

Filter / Mixing

1118 1291 1544 1785

Economizer

219

614

177

389

632

368

108

143

241

393

265

822

235

545

698

494

130

169

334

541

283

888

249

590

752

538

139

181

364

584

399

1080

365

684

852

621

221

269

429

662

Exhaust

191

Air Blender

Flat Filter

154

189

143

199

248

181

232

281

213

Angled Filter

Bag Filter

Cartridge Filter

Sm. Blank / Inspection

Med Blank / Access

M-L Blank / Access

Large Blank / Access

Small Coil

101

171

232

105

179

243

113

192

261

125

212

289

N/A

105

N/A

137

N/A

164

161

218

117

182

N/A

151

250

N/A

170

294

N/A

210

363

649

238

431

788

255

476

842

285

539

967

323

641

353

722

390

824

448

897

487

757

Weight includes 2 row UW

Med. Coil

1017 1444

Weight includes 8 row UW

M-L Coil

1142 1298 1483 1759 1982 2550

Weight includes 10 row W

Large Coil

323

439

568

720

147

185

864

167

200

923

182

230

1054 1234 1465 1664 1986 2222 2804

Weight includes 10 row W

Moisture Eliminator

Internal Face/Bypass

Face Damper

202

252

231

281

254

306

289

343

347

425

385

480

554

645

129

144

CLCH-IM-16A

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Table 1

T-Series Section Weights (lb) - Unit Sizes 3 - 50

Trane Unit Size

Front Horiz Disch Fan

Weight includes Type A fan

Bottom Vert Disch Fan

Weight includes Type A fan

Diffuser

300

444

500

508

599

652

762

905

1022 1277 2010 2168 2560

347

500

561

580

114

195

676

122

204

731

130

209

847

143

224

1000 1122 1385 2139 2307 2780

163

252

173

318

192

337

293

472

322

511

445

571

118

135

Discharge Plenum

Table 2

T-Series Section Weights (lb) - Unit Sizes 66 - 100

Table 2

Trane Unit Size

100

T-Series Section Weights (lb) - Unit Sizes 66 - 100

Med. Coil

Trane Unit Size

1511

2382

506

1386

477

839

1163

798

262

319

491

870

100

1850

3372

2143

3884

2608

4738

Weight includes 8 row UW

M-L Coil

1367

2147

464

1817

2984

572

Filter / Mixing

Economizer

Weight includes 10 row W

Large Coil

Exhaust

1257

432

1640

546

Air Blender

N/A

710

753

N/A

786

852

N/A

928

Weight includes 10 row W

Moisture Eliminator

Internal Face/Bypass

Face Damper

Flat Filter

797

964

Angled Filter

1002

1046

761

1414

911

Bag Filter

Cartridge Filter

Sm. Blank / Inspection

Med Blank / Access

M-L Blank / Access

Large Blank / Access

Small Coil

Front Horiz Disch Fan

Weight includes Type A fan

Bottom Vert Disch Fan

Weight includes Type A fan

Diffuser

252

288

3621

4391

5141

307

350

472

538

3621

913

4391

1029

769

5141

1257

928

775

1056

651

Discharge Plenum

933

1040

1237

Weight includes 2 row UW

Table 3

Inlet Guide Vane Weights (lb)

Fan Type/

Unit Size

100

FC Fan

BI Fan

N/A

105

N/A

128

N/A

155

N/A

155

N/A

111

118

N/A

AF Fan

Plug Fan

N/A

100

122

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Table 4

Approximate Motor Weights (lb)

Motor Type/

Horsepower

1/6

1/4

1/3

1/2

3/4

1-1/2

General Purpose ODP

General Purpose TEFC

Energy Efficient ODP

Energy Efficient TEFC

VAV-ODP

N/A

Motor Type/

Horsepower

7-1/2

100

General Purpose

ODP

126

151

230

253

215

233

230

265

329

365

286

332

331

359

409

334

384

352

370

508

681

406

536

509

685

722

970

General Purpose

TEFC NA

111

163

107

140

132

193

119

160

147

300

260

289

220

610

372

471

450

872

591

764

796

968

765

820

825

1255

989

Energy Efficient

ODP

Energy Efficient

TEFC

1302

1000

VAV-ODP

Table 5

Approximate Dry Cooling Coil Weights Type UU, UF, and UW, Fin Series 168 (Weights in lb)

Unit Size

Rows

100

110

181

236

290

122

203

266

329

138

232

306

380

175

289

381

473

197

329

437

545

222

376

503

631

247

425

573

721

274

475

645

814

358

621

458

804

548

956

666

114

148

182

146

188

231

1175

1604

2032

121

147

831

1083

1362

1292

1628

1042

Table 6

Unit Size 3, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

CLCH-IM-16A

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Table 6

Unit Size 3, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

116

141)

166

191

127

176

231

274

324

107

148

189

231

272

157)

183

241

266

102

122

123

148

173

198

131

Table 7

Unit Size 6, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

119

157

194)

232

270

155

217

285

341

403

111

185

135

189

243

297

351

127

198

236

307

345

136

142

175

164

201

238

275

Table 8

Unit Size 8, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

108

164

217

271

326

380

124

210

296

382

469

555

109

130

187

131

194

244

146

253

183

259

334

409

484

175

273

327

425

480

227

280

334

387

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Table 9

Unit Size 10, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

114

127

197

266

336

405

475

144

245

346

447

548

650

128

164

237

166

244

308

181

318

218

308

398

489

579

209

322

392

505

575

275

344

412

481

Table 10

Unit Size 12, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

103

165

257

349

441

533

625

103

166

103

142

185

316

448

579

710

842

119

211

306

122

213

313

400

116

228

410

284

402

521

638

756

274

421

513

661

361

452

542

633

Table 11 Unit Size 14, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

107

173

271

369

467

565

663

107

173

107

149

192

330

467

605

742

880

126

225

326

129

226

333

426

123

241

435

297

287

441

539

693

381

477

574

547

671

796

CLCH-IM-16A

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Table 12

Unit Size 17, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

123

199

316

434

551

667

786

123

199

122

172

221

381

542

703

864

1025

N/A

145

N/A

345

491

637

782

928

333

513

630

810

928

445

561

677

792

Table 13

Unit Size 21, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

148

241

379

517

655

793

931

149

241

139

214

264

451

191

330

475

197

333

489

617

184

364

636

411

581

752

922

1092

396

600

738

943

1081

637

528

664

800

936

835

1009

1195

Table 14

Unit Size 25, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

170

277

440

604

767

930

171

278

161

247

305

524

743

969

1181

219

384

553

225

386

567

721

213

417

739

478

678

461

701

617

778

939

878

864

1078

1105

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Table 14

Unit Size 25, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

1093

1401

1278

1268

1100

Table 15

Unit Size 30, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

190

312

191

313

180

278

340

588

254

448

647

260

450

661

842

249

505

481

862

542

771

526

794

697

837

709

899

889

1091

1333

1582

1001

1230

1459

897

1082

1275

1257

1450

1088

1278

Table 16

Unit Size 35, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

275

379

N/A

212

340

224

333

413

717

298

616

660

943

642

974

853

1022

1333

1631

1936

879

1116

1353

1590

1091

1328

1565

1224

1505

1788

1211

1544

1781

Table 17

Unit Size 40, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

306

425

N/A

231

381

247

368

458

CLCH-IM-16A

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Table 17

Unit Size 40, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

699

973

800

743

724

1142

1489

1825

2166

1062

1381

1700

2018

1093

1368

1738

2011

998

1247

1521

1795

1273

1546

1820

Table 18

Unit Size 50, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

386

551

N/A

294

491

322

477

592

920

1044

1496

1949

2400

2853

975

953

1289

1658

2028

2397

1399

1823

2248

2672

1440

1810

2297

2666

1323

1692

2061

2431

Table 19

Unit Size 66, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

521

738

N/A

387

441

660

648

789

1242

1740

2241

2742

3243

1383

1980

2577

3171

3768

1302

1866

2430

2994

3555

1275

1908

2409

3042

3543

660

1776

2277

2778

3279

Table 20

Unit Size 80, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

611

N/A

453

494

753

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Table 20

Unit Size 80, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

873

932

778

1471

2068

2664

3262

3859

1643

2355

3066

3777

4490

1547

2219

2893

3565

4268

1516

2275

2872

3632

4228

2114

2710

3307

3904

Table 21

Unit Size 100, Approximate Dry Coil Weights, Fin Series 168 (Weights in lb)

Coil Type

Rows

729

N/A

546

945

603

909

1065

1815

2565

3315

4062

4812

1131

2010

2889

3771

4653

5529

1900

2733

3570

4404

5238

1866

2802

3552

4488

5238

2613

3363

4113

4863

Lifting Instructions

and test lifting the unit to check

balance and stability.

The Trane Company recommends that the contractor

use spreader bars and slings to rig units and

subassemblies (sections) as shown.

Do NOT use fork lifts for handling

units.

q Always assemble the unit at the installation site.

Never lift units in windy conditions

or raise units above personnel.

q Always rig subassemblies or sections as they ship

from the factory.

q Make the loop of the sling parallel to the direction

Failure to follow all instructions

may result in personal injury or

equipment damage.

of airflow, whenever possible.

The following instructions cover lifting the unit as well

as inlet and exhaust hoods and external pipe chases.

Follow specific instructions.

1 Before lifting the unit, estimate the approximate

center of gravity and test lift the unit to determine

balance and stability.

WARNING

Follow good lifting practices

before lifting the unit to include

following instructions in this man-

ual, estimating center of gravity,

NOTE: PREPARATION OF THE ROOF CURB OR PIER

MOUNT AND ROOF OPENINGS SHOULD BE

COMPLETED BEFORE LIFTING UNIT TO THE ROOF.

SEE THE ASSEMBLY SECTION OF THIS MANUAL.

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USE ALL OF THE LIFT LUGS PROVIDED.

Lifting the External Pipe Cabinet (Chase)

NEVER STACK THE PIPE CABINET AND INLET

HOODS ON THE UNIT AS THE UNIT IS BEING LIFTED.

CAUTION

Do not attach the pipe chase to the

unit prior to lifting the unit. Doing

so could damage the equipment.

2 Lift all sections individually using all lifting lugs

provided and shown in Figure 4 . See specific

instructions for handling the inlet and exhaust

hoods and pipe chase in paragraphs following.

Follow all warnings lifting instructions in the general

Lifting section of this manual to include test lifting.

3 Remove all wooden blocks before installing the

unit to the roof curb (see Figure 5 ).

Lift the pipe chase section individually as shown in

Figure 3 . Attach the cables, chains or straps to lifting

lugs as shown.

4 After the sections are in place, assemble them

(see Unit Assembly).

Lifting Inlet and Exhaust Hoods

Attach the pipe chase to the unit only after all

sections are in place.

Figure 3

Pipe Cabinet Lifting

CAUTION

Do not attach the hood to the unit

prior to lifting the unit. Doing so

could damage the equipment.

Rigging and spreader bar

not furnished by Trane

Follow all warnings lifting instructions in the general

Lifting section of this manual to include test lifting.

Lift the hood sections individually as shown in Figure

2 . Attach the cables, chains or straps to lifting lugs

as shown.

Recommended

attachment to

lifting lugs

Attach the hood to the unit only after all sections are

in place.

Figure 2

Inlet and Exhaust Hood Lifting

Recommended

attachment

to lift lugs

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Figure 4

Field Unit Lifting

Rigging and spreader

bars not furnished by Trane

Recommended attachment

to lifting lugs

Figure 5

Shipping Block Removal

Remove ALL wooden blocks

before installing unit to roof curb

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2 Allow sufficient space for the recommended

service access. Refer to Figure 6 for FC, BI and

AF fan wheels and for plug fans.

,QVWDOODWLRQꢀ

3 Confirm that the foundation of the mounting

platform is large enough to include the unit

dimensions. Refer to unit submittals for specific

dimensions.

When preparing the unit site, consider the following:

1 Ensure that the site can support the total weight of

the unit. Table 1 and Table 2 list approximate

section weights.

Figure 6

Service Clearances

Filter

Coil

Drive

Fan

Table 22

Service Clearances (in inches)

Table 22

Service Clearances (in inches)

Unit

Size

Coil

Removal B

Filter A

Fan C

Starter D

Unit

Size

Coil

Removal B

150

165

Filter A

Fan C

Starter D

101

100

The floor or foundation must be level for proper coil

drainage and condensate flow.

4 Allow the proper height for condensate drain

requirements. Insufficient height may inhibit

condensate drainage and result in flooding the

unit.

5 Provide adequate lighting for maintenance

personnel to perform maintenance duties.

106

110

123

134

6 Provide permanent power outlets in close

proximity of the unit for installation and

maintenance.

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piping, ductwork, electrical connections, and coil

removal.

8QLWꢀ$VVHPEO\

The building roof must be able to support the entire

weight of the unit, roof curb and accessories. See

Table 1 thru Table 4 for unit and accessory weights.

The T-Series Climate Changer is extremely versatile

and can be assembled in many configurations. Prior

to unit assembly, refer to the correct submittals

and unit tagging for correct placement of

q Prepare the roof curb or pier mount and roof

openings before hoisting the unit to the roof.

accessory sections. Failure to review the submittal

could result in performance or assembly problems. If

there are any discrepancies, contact your local Trane

representative before proceeding.

q Check that the gasketing is intact and provides an

airtight seal with the unit base. Refer to the

applicable roof curb installation manual.

q Complete all ductwork, piping and electrical

connections only after mounting the unit. Refer to

unit submittals.

IMPORTANT: All shipping support screws on the

face of the sections and sectional subassemblies

must be removed and discarded to permit proper fit-

up and sealing of the surfaces.

All T-Series Climate Changer units are identified by a

multiple-character model number that identifies each

section. It is located on the panel on the inside of the

supply fan section access door. Be sure to refer to

the information on the nameplate when ordering

replacement parts or requesting service

General

WARNING

To avoid personal injury or death

keep open flame away from unit

exterior or interior. Do not weld or

use cutting torch on the exterior or

interior of the unit. The unit con-

tains polyurethane insulation. Fail-

ure to keep open flame away from

unit exterior or interior may result

in the production of toxic gas that

could result in death or serious

injury.

Assembly Hardware

T-Series Climate Changers ship with all necessary

assembly hardware and gasket material. This

hardware is packaged in either a clear plastic

envelope or cardboard box and can be found inside

the Fan section, Access section, or Mixing section.

The number of sections to be assembled often

makes it necessary to use more than one section to

ship the material. Please check all sections

thoroughly before contacting your Trane Company

Representative to report missing hardware.

Unit Assembly - All Sizes

Mounting

CAUTION

The internal sections of this unit

containing electrical components

If a unit arrives in sections, then each section must

be individually hoisted, set on a roof curb or pier

mount and assembled.

must not exceed 104 F tempera-

ture. Internal sections of the unit

not containing electrical compo-

The pipe cabinet must also be mounted as an

individual section. Refer to the pipe cabinet assembly

section following for specific instructions.

nents must not exceed 180 F tem-

perature. Failure to comply with

temperature requirements may

cause equipment damage.

When mounting the unit on its roof curb or pier mount

make sure that the gasketing between the roof curb

or pier mount and unit base provides an airtight seal.

See Figure 7 and Figure 8 for suggested pier/rail

mounting.

Units may be mounted on the roof with a roof curb or

pier mount. Refer to submittals for dimensions and

roof openings. Provide clearance around the unit to

allow adequate free air and necessary service

access. Also, allow room for supply and return

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Figure 7

Pier Locations (Typical)

Locate one pier at each corner, as a minimum,

directly underneath any shipping split (ensure full

support under each side), and then every four feet at

equally spaced intervals around the perimeter of the

unit. Both the unit and the pipe cabinet should be

supported by their base channel around the entire

perimeter.

CHECK THAT THE UNIT IS LEVEL TO ENSURE

PROPER OPERATION.

IMPORTANT: FOR PROPER OPERATION, THE UNIT

MUST BE INSTALLED LEVEL (ZERO TOLERANCE) IN

BOTH HORIZONTAL AXES. FAILURE TO LEVEL THE

UNIT PROPERLY CAN RESULT IN CONDENSATE

MANAGEMENT PROBLEMS SUCH AS STANDING

WATER INSIDE THE UNIT. STANDING WATER AND

WET SURFACES INSIDE AIR HANDLING UNITS CAN

RESULT IN MICROBIAL GROWTH (MOLD) IN THE

DRAIN PAN THAT MAY CAUSE UNPLEASANT ODORS

AND SERIOUS HEALTH-RELATED INDOOR AIR

QUALITY PROBLEMS.

Piers

Figure 8

Side View of Unit with Two Shipping Splits

For vertical discharge units, allow space under the

unit for supply air ductwork connections.

Assembling the Unit

Before sections are joined for final assembly, a butyl

tape seal must be made at the roof connection and

then hardware and sealing metal strips are installed

at the base assembly, the roof joint or joints and both

side panel seams.

4’ Typ

Unit Supports for Pier Mounts

NOTE: PIERS BENEATH SHIPPING SPLITS MUST BE

STRUCTURALLY SOUND TO SUPPORT THE WEIGHT

OF THE UNIT

Roof Assembly (for Unit Sizes 50-100 only)

Figure 9

Roof Assembly

Cross

Joint Strip

Roof Panels

Butyl Tape

(2 Rows)

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NOTE: THE BUTYL TAPE APPLIED THE ROOF

PANELS WILL COVER THE DRILLED HOLES.

IMPORTANT: FOR PROPER UNIT OPERATION, THE

FOAM BLOCKS MUST BE INSTALLED IN THE

RACEWAY. FAILURE TO INSTALL THE FOAM BLOCKS

CAN RESULT IN CONDENSATE MANAGEMENT

PROBLEMS.

1 Apply butyl tape along four roof panel seams

where they come together.

2 Join the panels together at the seams and secure

6 Remove backing from inner access cover tape

them in place with 5/16 X 3/4” screws and nuts.

and replace inner access cover.

3 Apply a strip of butyl tape along the center of the

joint and place the cross cover directly over it as

shown in Figure 10 .

7 Remove backing from outer access cover tape

and replace outer access cover.

4 Slide the three roof joint strips (one long and two

short) along the flat flange formed by the joined

roof panels in the three directions shown, allowing

4” overhang at the ends.

5 Crimp down the three overhanging ends and

secure with #10-16 x 3/4” self-drilling screws.

Figure 10

Roof Assembly Joints

Roof Joint Strip

Cross Cover

Butyl

Outer Roof Panel

Tape

Unit Sizes 50-100

Control Wiring Assembly at Section Splits (All Unit

Sizes) (Reference Figure 11 )

1 Sections Must be together

2 Remove outer and inner raceway access covers

on both sections adjacent to shipping split.

3 Remove top foam blocks in raceway.

4 Route wire harness(es) under inner roof through

raceway and make connection to corresponding

wire harness.

5 Replace foam blocks.

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Figure 11

Control Wiring Assembly

Outer Access Cover

Tape

Wire Harness

Inner Access Cover

Foam Block

Roof Assembly at Section Splits (All Unit Sizes)

Base Assembly

1 Apply two rows of butyl tape at the roof seams,

1 Slide the 1/2” threaded rod through the hole in

covering the hole pattern.

each of the two joined base sections as shown.

2 Align the roof panels together at the seams and

bring the two sections together. Secure the roof

panels in place with 5/16 X 3/4” screws and 5/16”

nuts.

2 Install two flat washers, lockwasher, and 1/2” nut

at each rod end. Tighten both nuts.

3 Install the flashing piece on the base assembly.

Secure in place with two #10-16 x 3/4” sheet

metal screws.

3 Slide the roof joint strip along the flat flange

formed by the joined roof panels, allowing 4”hang

on the ends.

4 Repeat steps 1 - 3 for the base assembly on the

other side of the unit.

4 (For Unit Sizes 3 - 40 when the roof joint strip is in

two pieces): Apply a piece of butyl tape where the

strips come together and place a cover directly

over the tape. Then slide the two strips on the roof

panels as shown in Figure 12 .

Figure 13

Joining Base Assembly

Flashing

5 Crimp down the two overhanging ends and

secure with #10-16 x 3/4” sheet metal screws.

Figure 12

Roof Assembly at Section Splits

Roof Joint Strip (in 2 Pieces)

Cover

Threaded Rod

Flat Washers,

Lockwasher

Base Sections

and 1/2” Nut

Panel Assembly

Outer Roof Panel

1 Leaving the paper backing on the tape, apply

butyl tape (tape side down) along the length of the

panel seam.

Unit Sizes 3-40

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NOTE: THE SEAM CAP SHOULD BE CUT TO SIZE TO

COVER THE SEAM AND TAPE.

Hood (Back and Side) Installation

Inlet hoods should be installed after the unit has

been set in place. They should not be stacked on the

unit as it is being hoisted. Mounting hardware and

caulking tape for the inlet hoods are located inside

the unit. For installation complete the following:

2 Install the seam cap directly over the seam and

tape. Attach using #10-16 x 3/4” screws through

all predrilled holes in the cap.

3 Caulk the gap between the top of the seam cap

and the bottom of the raceway.

NOTE: THE HOOD ASSEMBLY SHOULD BE

SUPPORTED BY CHAINS, SPREADER BAR, OR

OTHER MEANS (SEE LIFTING INSTRUCTIONS

SECTION) WHEN INSTALLED TO THE UNIT.

MOUNTING TAPE AND HARDWARE ARE LOCATED

INSIDE THE UNIT.

Figure 14

Panel Assembly

1 Apply the 1” butyl tape in a strip around the

Raceway

perimeter of the hood.

2 Using the lifting lugs, hoist the hood and center it

Seam Cap

over the panel opening as shown in.

3 Attach the hood to the unit with the 1/4-20 self-

drilling screws provided. Use ALL holes drilled in

the attachment flanges.

Outer Panel

#10 Screw

Base

4 Attach the two hood angle supports (when

provided) to the hood at one end and the bracket

on the unit as shown. Secure with 5/16” lock bolts

and lock nuts and #10-3/4 self-drilling screws.

Butyl Tape

Figure 15

Hood and Pipe Cabinet Installation

Angle Support

Butyl Tape

Hood

#10 Screw

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Pipe Cabinet (Chase) Installation

to the unit panel with #10 screws.

6 If piping is already run through the roof, follow

steps 6 through 13. First remove the Z bar from

the pipe cabinet.

Installation of the cabinet will be different depending

on the extent of the piping installation. Follow the

appropriate instructions below.

7 Remove the paper backing from the butyl tape on

INSTALLATION OF THE PIPE CHASE CABINET

REQUIRES ASSEMBLY OF THE CURB AND

INSTALLING THE CABINET TO BOTH THE CURB AND

THE UNIT AS DESCRIBED BELOW.

the Z bar and set the Z bar on top of the gutter

8 Attach the Z bar to the unit side panel with #10

screws.

THE PIPE CABINET SHOULD BE SUPPORTED BY

CHAINS, SPREADER BAR, OR OTHER MEANS (SEE

LIFTING INSTRUCTIONS SECTION) WHEN

INSTALLING.

MOUNTING TAPE AND HARDWARE ARE LOCATED

INSIDE THE UNIT.

9 Attach the Z bar to the gutter with #10 screws.

10 Remove the paper backing from the butyl tape on

the pipe chase side panels. Set the cabinet on top

of the curb (Figure 17) .

Figure 17

Pipe Cabinet Attachment

1 Assemble the pipe cabinet curb and attach to the

roof or mounting surface.

2 If piping is not already run through the roof, follow

steps 2 through 5 only. First remove the paper

backing from the butyl tape on the Z bar and pipe

chase side panels. (A gasket should already be in

place from the curb installation.) Set the cabinet

on top of the curb.

Attachment

Flange

Panel Removed

to Show Z Bar

Figure 16

Pipe Cabinet Installation

Unit Side Panel

Z Bar Attachment

Angle

Z Bar

NOTE: USE ALL HOLES DRILLED IN THE

ATTACHMENT FLANGES.

Pipe Cabinet

Base Rail

11 Attach the pipe cabinet side flanges to the unit

Gutter

panel with #10 screws.

12 Attach the pipe cabinet base rail to the Z bar with

bolts provided.

13 Apply caulk between the Z bar, the cabinet side

flanges, the base and around the drain connection

hole.

3 Attach the Z bar to the unit side panel with #10

self-drilling screws (Figure 16) .

4 Attach the Z bar to the gutter with #10 screws.

NOTE: USE ALL HOLES DRILLED IN THE

ATTACHMENT FLANGES.

5 Attach the pipe cabinet side (attachment) flanges

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6 Close the access door and confirm that there is a

good seal of the filter track block-off against the

access door.

Component Installation Requirements

The T-Series Climate Changer is extremely versatile

and the assembled unit is a complete air handling

system. Each section may have installation

requirements that will affect the performance of the

unit.

Fan Section

The Fan section can be configured as either draw-

thru or blow-thru. Review the submittals and unit

tagging prior to assembly.

High Efficiency Bag and Cartridge Filter Section

The fan and motor assembly are internally isolated.

The fan and motor bases are bolted to four spring

isolators (see Figure 19 ). The isolators are secured

to the fan section support base. Four (4) shipping tie-

downs are bolted adjacent to the isolators between

the fan isolation base and the support frame.

The Bag and Cartridge Filter sections can be used as

either a pre-filter section, a Final Filter section or

both. This is determined by placement in relation to

the fan.

Filter Installation

The shipping tie-downs secure the isolation base to

the support assembly to prevent any damage to the

fan section during shipment of the air handler. The

shipping spacers must be removed prior to unit

operation unless the unit is to be externally isolated.

NOTE: CARTRIDGE AND BAG FILTERS PROVIDED BY

TRANE ARE FITTED WITH A 7/8” HEADER THAT FITS

IN THE FILTER TRACK. IF USING FILTERS SUPPLIED

BY ANOTHER MANUFACTURER, FILTERS SHOULD

BE PURCHASED WITH A 7/8” HEADER. IN SOME

CASES IT MAY BE NECESSARY TO GASKET THE

LOCALLY PURCHASED FILTERS TO INSURE A GOOD

AIR SEAL.

FILTERS SHOULD BE INSTALLED WHEN THE UNIT IS

SET. THIS WILL PROTECT INTERNAL COMPONENTS

SUCH AS THE UNIT’S HEATING AND COOLING COILS.

Trane recommends the use of disposable pre-filters

with high efficiency filters. Disposable pre-filters slide

into the mounting tracks just ahead of the bag/

cartridge filters.

WARNING

Pressurized Cabinet!

Disconnect all electric power

before opening door. Failure to

disconnect power before servicing

can cause severe personal injury.

1 Disconnect the power to the unit.

2 Open the filter section access door.

3 Remove the adjustable block-off from the filter

track.

4 Slide the filters into the tracks. Note that bag filters

must be installed with the pleats in the vertical

plane.

5 Slide the adjustable block-offs into the filter track.

The block-off is intended to make a seal when the

access door is closed. It is adjustable and may

require a few changes to insure a proper seal.

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Figure 18

Shipping Spacer

Bolt

Spacer

Tie-Down

Spring

Bolt

Flat Washer

Flat Washers

Spring

Tie-Down Removal, Sizes 3-8

Tie-Down Removal, Sizes 10-50

Unit Isolation

Review the mechanical specifications and determine

the type of isolation to be used prior to removing the

shipping tie-downs. Remove the tie-downs only if the

factory provided isolation is to be used. If external

isolation is intended, review the portion of this

manual titled “External Isolation.”

Internal Isolation

The T-Series Climate Changer Fan section is

internally isolated. The unit ships with the internal

isolation base secured to prevent damage to the fan

and motor assembly during shipment. To activate the

isolation, remove the shipping tie-downs.

Shipping Tie-down Removal

There are four types of shipping tie-downs used to

secure the isolation base:

q Sizes 3 - 8 use a 3/8”x1” pipe. (See Figure 18 .)

q Sizes 10 - 30, except plug fans, use washers with

a bolt. (See Figure 18 .)

q Sizes 35 - 50, except plug fans, use a tie-down

bolt and shim. (See Figure 18 .)

q Size 66 -100 and plug fans use a tie-down angle

and bolt. (See Figure 19 .)

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Figure 19

Shipping Angle and Isolator Tie-down Removal for Unit Sizes 66, 80 and 100 (Includes Plug Fans)

Screw, Lockwasher and Hex Nut

(Four per Angle)

Angle, Isolator Tie-Down

(Four Required)

Table 23

Remove the shipping tie-downs per the following

instructions:

Isolator Minimum Clearance Adjustments (in)

Req’d

Clearance

1 Shipping tie-downs are located at each corner of

the isolation base. Access for removal of shipping

spacer is available through the fan module access

doors.

Unit Size

Fan Type

Isolator Type

Rubber

Spring

1.0

0.5

1.0

3-8

Rubber

Spring

10-30

21-50

35-50

66-100

2 Remove the bolt. This will release the isolator and

make it possible to remove the pipe or spacer.

FC and BI

Plug

Spring

FC & AF

FC, AF & Plug

Spring

Isolator Adjustment

Spring

Once the shipping tie-downs are removed and the

internal isolation is released, it may be necessary to

adjust the isolators to achieve the proper operation

height of the fan and motor isolation base.

The isolators are bolted between the fan and motor

isolation base. There are five designs based on unit

size and fan type. Specific isolator clearances are

listed in Table 23 . The measurement is taken

between the top of the floor panel (or support

channel on sizes 66-100) and the bottom of the

isolation base channel for all sizes.

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Figure 21

Typical Internal Face and Bypass Configuration

6HWꢁ8S

Once the T-Series Climate Changer is assembled

and installed, attention must be directed to individual

components for proper operation.

Dampers

Open

(Including filter mixing sections, mixing sections, face

and bypass dampers and Traq dampers)

Before installing the Mixing sections fitted with filter

racks, be sure adequate clearance is provided to

open the access doors and install the filters. Filter

installation is explained in the section titled “Filter

Installation.”

Figure 20

Typical Mixing Box Configuration (sizes 3-100)s

actuators. The actuators should be sized according

to the torques given in Table 24 .

NOTE: MIXING SECTIONS, AND FACE AND BYPASS

DAMPERS ARE DESIGNED, FOR THE DAMPER

ACTUATORS TO BE DIRECT COUPLED AND

INSTALLED IN THE AIR STREAM. IF OTHER

PROVISIONS ARE REQUIRED, MODIFICATIONS TO

THE SECTION WILL BE THE RESPONSIBILITY OF THE

INSTALLING CONTRACTOR.

Rods, Operators and Settings

The T-Series Climate Changer is available with

factory mounted controls or end devices. If the unit is

not ordered with controls or end devices, it is the

responsibility of the installer to provide and install the

Dampers are factory installed and adjusted. There

are three damper blade configurations available:

parallel blade, opposed blade, and Traq dampers.

Opposed and Parallel Dampers

Opposed and parallel dampers in units size 3

through 100 have an internal jack-shaft. See Figure

21 . A 90° jack shaft rotation gives a 95° blade travel.

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Table 25

Torque and Force Required to Operate Inlet Vanes (FC, BI,

and AF Fans) in lb-in

Table 24

Damper Torque at 1 in wg, Air Pressure Drop in lb-in

Fan Outlet Velocity

Mixing

Box

(Backand

Bottom)

Economizer

2000 FPM

3000 FPM

Internal

Face and

Bypass

Exhaust

Side Mixing

Box

Unit

Size

Face

Damper

Unit

Size

Fan

Size

Open

(Torque) (Torque) (Torque) (Torque)

13BI

15 FC

16 FC

15 BI

38.0

14.1

18.0

38.0

18.0

23.1

44.0

23.1

24.0

54.0

24.0

25.0

66.0

25.0

26.5

90.0

115

N/A

5.0

6.4

N/A

6.4

8.3

N/A

8.3

9.0

N/A

9.5

N/A

9.5

10.0

N/A

40.0

31.9

40.5

40.0

40.5

52.2

50.0

52.2

54.0

60.0

54.0

56.0

74.0

56.0

59.7

100.0

200

N/A

11.4

14.4

N/A

14.4

18.6

N/A

18.6

19.5

N/A

19.5

21.0

N/A

21.0

22.5

N/A

104

103

122

151

16 FC

18 FC

16 BI

100

18 FC

20 FC

18 BI

20 FC

22 FC

20 BI

22 FC

25 FC

22 BI

101

138

148

162

218

245

307

112

25, 30

27 fc

100

136

201

230

291

106

144

181

224

284

25 FC

24 FC

30 FC

27 FC

27 AF

33 FC

30 FC

30 AF

33 FC

36 AF

33 AF

40 AF

36 AF

33 AF

44 AF

40 AF

36 AF

150

115

220

200

103

310

220

142

310

256

189

216

256

189

278

216

256

120

104

215

150

100

180

120

Table 25

Torque and Force Required to Operate Inlet Vanes (FC, BI,

and AF Fans) in lb-in

215

113

100

180

Fan Outlet Velocity

2000 FPM

3000 FPM

100

113

140

Unit

Size

Fan

Size

Open

(Torque) (Torque) (Torque) (Torque)

9 FC

12 FC

10 FC

13 FC

12 FC

13 FC

15 FC

N/A

10.0

5.7

N/A

3.5

2.9

3.9

3.5

3.9

5.0

N/A

22.5

19.6

24.5

22.5

24.5

31.9

N/A

7.8

6.5

8.7

7.8

8.7

11.4

124

100

113

181

140

100

10.9

10.0

10.9

14.1

CLCH-IM-16A

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Figure 22

Traq Damper Terminal Connections.

Traq Dampers

Traq dampers are fitted in mixing sections in several

possible configurations. These low leak dampers

modulate and measure air flow.

VCM

Each Traq damper section is supplied with a factory-

mounted ventilation control module (VCM) on the

interior of the mixing box. The VCM has an input

terminal for power and an output terminal for air

velocity. (See Figure 22 .)

Velocity (2-10 VDC)

GND

1TB1-3

1TB1-4

1TB1-5

1TB1-6

24 VAC

GND

The actuators, factory-mounted or field-supplied, are

separately wired and controlled by a PCM or other

building logic. Figure 23 illustrates the typical quick

connect scheme.

Figure 23

Typical Quick Connects with Wiring Identification

VCM (Transducer) Calibration

The VCM has an auto-zero function that recalibrates

the transducer once every minute.

TSC Size

cfm @ 10V

2304

L/s @ 10V

1087

Input Power Signal

4609

2175

The only input signal the VCM needs is the 24 VAC

power connected to terminals TB5 and TB6.

4609

2175

6913

3263

100

Output Velocity Signal

10900

16650

10900

24970

34630

46200

57820

69270

5145

The 2 - 10 VDC linear output signal from the VCM

represents air velocity. This voltage can be converted

to represent cfm or L/s using the formula and Table

26 following. For example, if the VCM on a Size 21

T-Series Climate Changer has a 10-volt signal, it

would represent 16650 cfm (7859 L/s) through the

Traq damper. If this voltage is 6 volts, air flow through

the Traq damper would be 8325 cfm (3930 L/s).

5145

7859

5145

11786

16345

21806

27291

32695

Using the formulas

cfm = k (cfm @ 10V) [volts-2/8]

L/s = k (L/s @ 10V) [volts-2/8], and tables following

Installation and Maintenance

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For Traq Dampers, use the following table.

Table 26

VCM Voltage Versus Airflow - Traq Dampers (at Sea Level)

Side Installation

Back Installation

TSC Size

cfm @ 10V

L/s @ 10V

2175

cfm @ 10V

2304

L/s @ 10V

1088

4609

2175

4609

2175

4609

2175

4609

2175

7400

3493

6913

3263

100

7400

3493

11100

11563

16965

17344

24970

25447

34636

46181

57727

69272

5239

7400

3493

5239

9218

4351

5239

9218

4351

5458

14800

23126

23091

23126

33929

46181

50894

6986

8007

6986

8186

10915

10899

10915

16014

21797

24022

11786

12011

16348

21797

27247

32696

NOTE: TO PROVIDE EVEN TORQUE DISTRIBUTION

Altitude can be adjusted for using the following

factors:

AND RELIABLE VANE TRACKING, IT IS

RECOMMENDED THAT TWO EQUALLY SIZED

ACTUATORS BE MOUNTED ON EACH SIDE OF THE

FAN HOUSING FOR UNIT SIZES 35, 50, 66, 80, AND

100.

Elevation (ft)

“k”

Elevation (ft)

“k”

1.000

0.982

0.964

0.949

0.930

0.914

0.897

0.876

0.860

0.846

0.825

Sea Level

1000

6000

7000

8000

9000

10000

BEFORE OPERATION, INSPECT THE VANE

ASSEMBLY FOR FREEDOM OF MOVEMENT. IF

RESISTANCE IS ABOVE THE TORQUES GIVEN IN

TABLE 25 CHECK THE ASSEMBLY FOR ANY BINDING

OR MISALIGNMENT. DO NOT FORCE THE VANES.

2000

3000

4000

5000

Duct Connections

All duct connections to the T-Series Climate Changer

should be installed in accordance with the standards

of the National Fire Protection Association(NFPA) for

installing of air conditioning and ventilating systems

other than residence type (NFPA 90A), and

residence type warm air heating and air conditioning

systems (NFPA 90B).

Inlet Guide Vanes

Inlet guide vanes can be provided with factory

mounted actuator motors when ordered with factory

mounted controls or end devices. If actuators are not

ordered factory mounted, it is the responsibility of the

contractor to provided the actuator and all mounting

hardware.

See unit submittal documentation for additional duct

mounting information.

The Inlet guide vanes are designed for the actuators

to be internally mounted in the fan section. Size the

actuators based on operating torque requirements.

To ensure the highest fan efficiency, duct turns and

transitions must be made carefully minimizing air

friction losses and turbulence. Proper duct work

CLCH-IM-16A

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Figure 24

installation, as outlined by such organizations as

SMACNA (Sheet Metal and Air Conditioning

Contractors National Association, Inc.) should be

adhered to.

Typical Section with Duct Flat/Flange Connections

Uninsulated Cut

Fan Discharge Connections

Section

Airflow

When using lined duct, the insulation should not

obstruct the discharge opening. (See Figure 24 .)

Connections made directly to the discharge opening

of the fan should have a minimum of 3 fan diameters

of straight duct before any turns or transitions. The

first turn of the connection should be in the same

direction as the fan rotation. The air that the fan

discharges into the duct is extremely turbulent and

requires some length of duct to stabilize. Abrupt

changes in duct work directly off the fan discharge

will affect fan performance.

Flat Connection

Insulated Duct

Damper Sections

Section

Standard damper sections include mixing sections,

filter mixing sections, face damper sections, internal

face and bypass sections, and economizer sections.

Airflow

Duct work attached to the standard damper sections

should be sized to fit the opening of the damper. This

information is provided in the submittals. When using

lined duct, ensure that the insulation does not

obstruct the damper opening. (See Figure 24 .)

Flat Connection

Traq Dampers

Traq dampers are installed in mixing sections. Size

the duct connection to attach to the specified portion

on the face of the section. (See Figure 25 .)

Figure 25

Traq Damper Duct Connections

Mitered Corner

Radius Elbow

(Sweep)

Traq Damper

Mixing Box

Inlet Duct

Traq Damper

Mixing Box

d = 1 hydraulic duct diameter = 2 x W x H

________

W + H

Installation and Maintenance

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NOTES: THE DRAIN CONNECTION SIZE IS 1” NPT

EXTERNAL FOR UNIT SIZES 3 THROUGH 30; 1-1/2

NPT EXTERNAL FOR UNIT SIZES 35, 40, 50; 1-1/4”

INTERNAL THREADS ON SIZES 66, 80, 100.

Discharge Plenum

Discharge plenum sections are available with or

without openings. Sections with openings have a

framed opening that can be used to secure the duct

to the frames. If the duct is lined, it is important that

the insulation does not obstruct the opening of the

section.

DRAIN PANS MUST BE PRIMED AT START-UP TO

OPERATE PROPERLY.

Miscellaneous Sections

Miscellaneous sections include access sections, coil

sections, fan sections and intake sections.

If the duct is lined, it is important that the insulation

does not obstruct the opening of the section.

Internal Face and Bypass

Duct connections for internal face and bypass

damper sections are similar to the miscellaneous

sections. Duct work can be attached directly to this

frame.

Drain Pan

Piping

Condensate Drain Pan Connections

CAUTION

Failure to provide adequate con-

densate piping may result in water

damage to the equipment and or

building.

Threaded condensate drain connections are

provided on only one side of the coil section. Pitch

the connection lines horizontal or downward toward

an open drain. Trane recommends installing a plug to

facilitate cleaning of the trap.

IMPORTANT: PROPER TRAPPING OF THE COOLING

COIL CONDENSATE DRAIN LINES IS NECESSARY

FOR PROPER CONDENSATE MANAGEMENT.

IMPROPER TRAPPING CAN RESULT IN STANDING

WATER INSIDE THE UNIT OR WET INTERIOR

SURFACES THAT CAN CAUSE UNPLEASANT ODORS

AND SERIOUS HEALTH-RELATED INDOOR AIR

QUALITY PROBLEMS.

It is essential that the drain pan condensate trap be

deep enough and of the correct design to ensure a

water seal in the trap while allowing the condensate

pan to drain. Insufficient depth or incorrect design

can cause the drain pan to overflow.

CLCH-IM-16A

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Figure 26

Drain Pan Trapping for Section under Negative Pressure

Normal Operation

3C - Normal Operation

H = (1” for each 1” of maximum negative

pressure) + 1”

H= (1" for each 1" of

maximum negative

static pressure) + 1"

J = 1/2 H

J= half of H

L = H + J + Pipe Diameter + Insulation

L= H + J + Pipe Diameter + Insulation

Figure 27

Drain Pan Trapping for Section under Positive Pressure

2C - Normal Operation

K = min. 1/2”

K= min. 1/2"

H = 1/2” plus maximum total static

pressure

H= 1/2" plus maximum

total static pressure

Negative Pressure Section

Positive Pressure Section

Trap the drain pan as illustrated in Figure 26 , which

also illustrates the proper piping as well as the

operation of the trap. Use the formula given in Figure

26 to determine the correct minimum depth for the

condensate trap.

The positive pressure section requires a different

design than the negative pressure trap. Refer to

Figure 27 and the formula provided to determine the

minimum trap depth.

Installation and Maintenance

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Units With More Than One Drain Pan

the unit. The contractor should supply the pipe

nipples, couplings, etc.for installation.

With the T-Series Climate Changer, each section can

be ordered with or without a drain pan. When more

than one section has a drain pan, you must trap each

section individually. Connecting all drains to a

common line with only one trap will result in

condensate retention, and possible water damage to

the air handler or adjoining space.

NOTE: WHEN USING ELECTRONIC VALVE

ACTUATORS ON CHILLED WATER VALVES, THE

VALVE SHOULD BE MOUNTED ABOVE THE

HORIZONTAL POSITION TO PREVENT COLLECTION

OF CONDENSATE IN THE ACTUATOR ELECTRONIC

CIRCUITS AND SUBSEQUENT ACTUATOR FAILURE.

WHEN USING ELECTRONIC VALVE ACTUATORS ON

HOT WATER OR STEAM COILS, THE ACTUATOR

SHOULD BE INSTALLED APPROXIMATELY 45

DEGREES FROM VERTICAL. VERTICAL

INSTALLATION OF A VALVE ACTUATOR ON A HOT

WATER OR STEAM COIL WILL EXPOSE THE

ACTUATOR TO HIGH TEMPERATURES, RESULTING

IN ACTUATOR FAILURE.

If a section has a drain pan for cleaning purposes

only, it does not need a trap; however a cap or shut

off valve should be installed on the drain connection.

Only sections handling condensate, such as a

cooling coil section or eliminator section, require a

trap. Figure 28 through Figure 37 are examples of

typical installations.

THE EXTERNAL CABINET IS ONLY SUFFICIENTLY

SIZED FOR HOUSING COIL PIPING. ALL VALVES AND

VALVE ACTUATORS MUST BE LOCATED

ELSEWHERE.

Coil Piping And Connections

See Table 27 through Table 29 for connection sizes.

For supply, vent and drain connections, refer to

Figure 28 through Figure 37 .

For best results, The Trane Company recommends

that a short pipe nipple be used on the coil headers

prior to making any welded flange or welded elbow

type connections.

NOTE: DRAIN AND VENT CONNECTIONS ARE

PROVIDED AS STANDARD ON UW, UU, DD, AND D

COILS ONLY. ALL OTHERS, IF REQUIRED, MUST BE

FIELD INSTALLED.

IMPORTANT: TEFLON TAPE OR PIPING COMPOUND

SHOULD NOT BE USED FOR ANY FIELD

CONNECTIONS BECAUSE ITS HIGH LUBRICITY MAY

ALLOW CONNECTIONS TO BE OVER-TIGHTENED,

RESULTING IN DAMAGE TO THE COIL HEADER.

NOTE: DRAIN AND VENT CONNECTIONS ON THE UU

AND UW COILS ARE RECESSED. IF EXTENDED

DRAINS AND VENTS ARE REQUIRED, THEY MUST BE

FIELD PROVIDED.

NOTE: USE A BACK-UP WRENCH WHEN ATTACHING

PIPING TO COILS WITH TUBE HEADER

CONSTRUCTION TO PREVENT DAMAGE TO THE COIL

HEADER. DO NOT USE BRASS CONNECTORS. BRASS

DISTORTS EASILY AND COULD CAUSE CONNECTION

LEAKS.

General Coil Piping Recommendations

Proper installation, piping and trapping is necessary

to ensure satisfactory coil operation and to prevent

operational damage.

q Support all piping independently of the coils.

When attaching the piping to the coil header, make

the connection only tight enough to prevent leaks.

Maximum recommended torque is 200 pound-feet.

q Provide swing joints or flexible fittings on all

connections that are adjacent to heating coils in

order to absorb thermal expansion and

contraction strains.

Use pipe sealer on all thread connections.

q If ordered with factory mounted controls, install

After completing the piping connections, use mastic

to seal between the pipe and casing before insulating

the pipe.

the control valves. The valves ship separately in

Table 27

Shipping Coil Water and Steam Connection Sizes

Coil Type

W, WA

Header Height

18, 24, 30, 33

42, 48, 54

Supply

2-1/2

3/4

Return

2-1/2

3/4

Drain/Vent

1/2

D, DD, WD, K

18, 24, 30, 33

18, 24, 30

1/2

CLCH-IM-16A

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Table 27

Shipping Coil Water and Steam Connection Sizes

Coil Type

Header Height

Supply

Return

Drain/Vent

1/2

18, 24, 30

1-1/4

1/2

1-1/4

2-1/2

1-1/4

1-1/2

1/2

30, 33

1/2

2-1/2

1-1/4

30, 33

Table 28

UF Refrigerant Coil Connections (Inches)

Unit

Size

Header

Height

Rows

4, 6, 8

4, 6

Dist.

Tube

No.

Circuits

Circuiting

Full

1 Distributor

2 Distributors

Liquid

4 Distributors

Liquid

Suction

1-5/8

1-3/8

1-5/8

1-3/8

1-5/8

1-3/8

1-5/8

1-3/8

1-5/8

1-3/8

Liquid

Suction

1/4

3/16

1/4

1-1/8

7/8

Half

Qtr.

1-1/8

7/8

1-5/8

1-3/8

3/16

1/4

5/8

7/8

3/16

1/4

5/8

4, 6, 8

4, 6

Full

1-1/8

7/8

3/16

1/4

Half

Qtr.

1-1/8

7/8

1-5/8

1-3/8

3/16

1/4

Note 1

7/8

3/16

1/4

5/8

8,10

4, 6, 8

4, 6

Full

Note 2

1 1/8

7/8

3/16

1/4

Half

Qtr.

1-1/8

7/8

1-5/8

1-3/8

3/16

1/4

7/8

3/16

1/4

7/8

5/8

4, 6, 8

4, 6

Full

1-3/8

1-1/8

7/8

3/16

1/4

Half

Qtr.

1-3/8

1-1/8

7/8

1-5/8

1-3/8

3/16

1/4

7/8

3/16

1/4

5/8

4, 6, 8

4, 6

Full

1-3/8

1 1/8

7/8

3/16

1/4

Half

Full

1-3/8

1-1/8

1-5/8

3/16

1/4

4, 6, 8

4, 6

1-1/8

Note 3

3/16

1/4

Note 4

Half

1-1/8

7/8

1-3/8

3/16

Installation and Maintenance

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Table 28

UF Refrigerant Coil Connections (Inches)

Unit

Size

Header

Height

Rows

4, 6, 8

4, 6

Dist.

Tube

No.

Circuits

Circuiting

Full

1 Distributor

Liquid Suction

2 Distributors

4 Distributors

Liquid

Suction

1-5/8

1-3/8

1-5/8

1-3/8

1/4

3/16

1/4

1-1/8

7/8

Half

1-1/8

1-5/8

3/16

1/4

Note 5

1-1/8

1 1/8

7/8

25,30

4, 6, 8

4, 6

Full

3/16

1/4

Half

1-1/8

1-5/8

3/16

7/8

Notes:

3. 3-1 3/8 and 1-1 5/8

4. 3-7/8 and 1-1 1/8

5. 3-5/8 and 1-7/8

Number of connections - Size (Inches)

1. 1- 5/8, 1- 7/8

2. 1-1 1/8 and 1-1 3/8

Table 29

UF Refrigerant Coil Connections (Inches)

Unit

Size

Header

Height

Rows

4, 6, 8

4, 6

Dist.

Tube

No.

Circuits

Circuiting

2 Distributors

4 Distributors

Liquid

8 Distributors

Liquid

Suction

1-5/8

1-3/8

1-5/8

1-3/8

Liquid

Suction

35,40

1/4

3/16

1/4

Full

Half

Full

Half

Qtr.

Full

Half

Full

Half

Full

Half

1-3/8

1-1/8

Note 1

7/8

1-3/8

1-1/8

1-5/8

3/16

1/4

2-32

4, 6, 8

4, 6

1-3/8

1-1/8

7/8

3/16

1/4

1-3/8

1-1/8

1-5/8

1-3/8

3/16

1/4

7/8

3/16

1/4

5/8

2-37

2-45

2-51

4, 6, 8

1-1/8

Note 2

3/16

1/4

Note 3

1-1/8

7/8

1-3/8

3/16

1/4

4, 6, 8

1-1/8

7/8

1-5/8

1-3/8

1-5/8

1-3/8

3/16

1/4

1-1/8

1-5/8

3/16

1/4

Note 4

1-1/8

7/8

100

4, 6, 8

4, 6

3/16

1/4

1-1/8

1-5/8

3/16

7/8

Notes:

4. 6-5/8 and 2-7/8

Number of connections - Size (Inches):

1. 2-7/8, 2-1-1/8

2. 6-1 3/8 and 2-1-5/8

3. 6-7/8 and 2-1-1/8

CLCH-IM-16A

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Figure 28

Coil Type UW 2-Row RH and LH Small Coil Section

Connections with Drain and Vent Locations

R NPT (EXT) Supply R.H.

R NPT (EXT) Return L.H.

R NPT (EXT) Return R.H.

R NPT (EXT) Supply L.H.

3/8” NPT Ext Vent

Left Hand

Right Hand

AIR

FLOW

AIR

FLOW

3/8” NPT Ext Drain

Base

Line

Note: External connections fit through casing side

Table 30

2-Row UW Coil Dimensions

Unit Size

10-9/16

13-11/16

4-1/2

6-1/2

21-5/8

2-5/8

1-1/2

12-1/16

13-15/16

16-7/16

13-15/16

18-15/16

20-5/8

14-3/16

17-1/16

19-9/16

20-13/16

22-1/16

25-3/4

4-1/2

4-1/4

3-3/4

4-3/8

6-1/2

6-3/4

24-5/8

26-3/8

33-3/8

25-7/8

38-3/8

42-1/8

45-1/4

58-3/4

2-5/8

3-5/32

1-1/2

2-1/2

25-3/4

26-7/8

25-3/4

26-7/8

11-1/2

29-7/16

30-9/16

7-1/8

Installation and Maintenance

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Figure 29

Coil Type UW 2-Row RH and LH Medium Coil Section Connections with Drain and Vent Location

R NPT (EXT) Supply R.H.

R NPT (EXT) Return L.H.

3/8” NPT Ext Vent

R NPT (EXT) Return R.H.

R NPT (EXT) Supply L.H.

3/8” NPT Ext Drain

AIR

FLOW

AIR

FLOW

Right Hand

Left Hand

1’7”

Table 31

2-Row UW Coil Dimensions

Unit Size

18-7/

19-3

5-1/2

7-25/32

8-1/16

5-1/8

35-1/2

39-1/8

52-7/8

55-3/4

69-1/2

27-3/4

31-1/2

34-5/8

30-7/8

34-5/8

37-3/4

11-1/2

47-1/8

54-5/8

60-7/8

50-1/2

66-3/4

69-7/8

81-1/8

90-1/2

96-1/8

101-1/8

113-5/8

2-1/2

64-1/4

87-3/8

100

CLCH-IM-16A

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Figure 30

Coil Type UU 4 and 8-Row and UW 4, 6, and 8-Row, RH and LH Medium Coil Connections with Drain and Vent Locations (Unit Sizes

3 - 40).

R NPT (EXT) Supply R.H.

R NPT (EXT) Return L.H.

R NPT (EXT) Return R.H.

R NPT (EXT) Supply L.H.

3/8” NPT Ext Vent

Left Hand

Right Hand

AIR

FLOW

AIR

FLOW

3/8” NPT Ext Drain

Base

Line

Table 32

2-Row UW Coil Dimensions

Unit Size

10-9/16

12-1/16

13-15/16

16-7/16

13-15/16

18-15/16

20-5/8

13-11/16

14-3/16

17-1/16

19-9/16

20-13/16

22-1/16

25-3/4

4-1/2

4-1/4

3-3/4

4-3/8

6-1/2

21-5/8

2-5/8

1-1/2

6-1/2

6-3/4

24-5/8

26-3/8

33-3/8

25-7/8

38-3/8

42-1/8

45-1/4

58-3/4

2-5/8

3-5/32

1-1/2

2-1/2

25-3/4

26-7/8

25-3/4

26-7/8

11-1/2

29-7/16

30-9/16

7-1/8

Installation and Maintenance

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Table 33

UW 4, 6, and 8-Row, RH and LH Medium Coil Dimensions in inches

UW Coil Section

Unit

Size

4 ROW

7-3/16

7-7/16

6 ROW

9-5/16

9-5/8

8 ROW

11-9/16

11-13/16

15-1/2

10-9/16

12-1/6

13-11/16

15-3/16

17-1/16

19-9/16

20-13/16

22-1/6

3-15/16

4-3/16

1-1/2

13-15/16

16-7/16

17-11/16

18-15/16

22-5/8

25-3/4

2-1/2

25-3/4

28-7/8

25-3/4

28-7/8

32-9/16

29-7/16

4-3/16

9-5/8

Table 34

UU 4 and 8-Row RH and LH Medium Coil Connection Dimensions in inches

UU Coil Section

Unit

Size

4 ROW

N/A

8 ROW

N/A

2-5/8

3-3/16

21-5/8

24-5/8

28-3/8

31-3/8

35-7/8

38-3/8

42-1/4

45-1/4

58-13/16

N/A

4-1/2

4-3/4

6-5/8

6-15/16

2-1/2

11-1/4

CLCH-IM-16A

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Figure 31

Coil Type UU 4 and 8-Row & UW 4, 6, and 8-Row RH and LH Medium Coil Section Connections (Unit Sizes 50 - 100) with Drain and

Vent Location

R NPT (EXT) Supply R.H.

R NPT (EXT) Return L.H.

3/8” NPT Ext Vent

R NPT (EXT) Return R.H.

R NPT (EXT) Supply L.H.

3/8” NPT Ext Drain

AIR

FLOW

AIR

FLOW

Right Hand

Left Hand

1’7”

Table 35

Coil Type UU 4 and 8-Row & UW 4, 6, and 8-Row RH and LH Medium Coil Section Connections Dimensions in inches

Unit Size

18-3/4

21-7/8

35-5/8

52-3/4

55-7/8

69-5/8

27-3/4

31-1/2

30-7/8

34-5/8

37-3/4

11-1/2

47-1/8

54-5/8

50-1/2

66-3/4

69-7/8

81-1/8

90-7/16

74-1/8

101-1/8

113-5/8

2-1/2

34-11/16

60-11/16

64-1/4

87-3/8

100

Table 36

Coil Type UU 4 and 8-Row & UW 4, 6, and 8-Row RH and LH Medium Coil Drain and Vent Location Dimensions in inches

UW COIL SECTION

UU COIL SECTION

Unit Size

5-1/8

4 ROW

6 ROW

10-1/2

8 ROW

12-11/16

4 ROW

8 ROW

12-1/8

8-3/8

5-5/8

7-13/16

5-1/8

7-13/16

5-1/ (130.2)

5-1/8

7-13/16

100

7-13/16

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Figure 32

Coil Type WC-24” Headers with Drain and Vent Locations

1-1/4” NPT (INT)

Return

AIR

FLOW

1-1/4” NPT (INT)

Supply

25-1/2”

24-1/8”

10-1/2”

12”

Sq Hd Pipe Plug

1/2” NPT Drain

2”

4”

Figure 33

Coil Type P2, 18, 24” Headers with Drain and Vent Locations

2, 4 Row

6 Row

1/2” NPT Vent

6”

Water Outlet

AIR

FLOW

Water Outlet

Water Inlet

6”

Water Inlet

1/2” NPT Drain

Table 37

Coil Type P2, 18, 24” Headers Dimensions (in)

Header

16.5

22.5

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Figure 34

Coil Type P4, 18, 24” Headers with Drain and Vent Location

2 Row

4 Row

1/2” NPT Vent

Water Outlet

1/2” NPT Vent

AIR

1.68”

3”

Water Outlet

FLOW

Water Inlet

3”

0.18”

1/2” NPT Drain

Table 38

Table 39

Coil Type P4, 18, 24” Headers Dimensions (4-Row) in inches

Coil Type P4, 18, 24” Headers Dimensions (2-Row) in inches

Header

10.5

13.5

7.5

10.5

Figure 35

Coil Type P4, 18, 24” Headers with Drain and Vent Location (6 and 8 Row)

6 Row

8 Row

Water Outlet

1/2” NPT Vent

AIR

FLOW

1/2” NPT Drain

Water Inlet

1/2” NPT Drain

7-1/2”

4-1/2”

Water Outlet

3”

Table 40

Coil Type P4, 18, 24” Headers with Drain and Vent Location (8

Row) Dimensions in inches

Header

16.5

22.5

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Figure 36

Coil Type P8, 18, 24” Headers with Drain and Vent Locations

4 Row

8 Row

1/2” NPT Vent

AIR

FLOW

Water Inlet

Water Outlet

Water Inlet

3”

1/2” NPT Drain

Water Outlet

Table 41

Coil Type P8, 18, 24” Headers (4-Row) Dimensions in inches

Table 42

Coil Type P8, 18, 24” Headers (8-Row) Dimensions in inches

Header

7.5

1.2

4.5

1.2

16.5

22.5

28.5

10.5

13.5

1.2

Figure 37

Coil Type W with 18, 24, 30 and 33” Headers and with Drain and Vent Locations

1/2” NPT (INT) Vent

2-1-2” NPT (INT) Return

2-1-2” NPT (INT) Supply

1/2” NPT (INT) Vent

AIR

B FLOW

AIR

FLOW

1/2” NPT (INT) Drain

2-1-2” NPT (INT) Supply

2-1-2” NPT (INT) Return

Left Hand Coil

Right Hand Coil

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Table 43

Coil Type W with 18, 24, 30 and 33” Headers and with Drain and Vent Locations Dimensions in inches

2-Row

4-Row

6-Row

8-Row

Coil Size

6-3/4

9-3/4

19-1/2

8-1/4

11-1/4

6-1/2

9-1/2

12-1/2

15-1/2

9-3/4

12-3/4

14-1/4

12-3/4

15-3/4

17-1/4

25-1/2

31-1/2

34-1/2

11-1/4

14-1/4

15-3/4

14-1/4

17-1/4

18-3/4

Steam Coil Piping

Note: Coil Connections available right or left hand (determined by

facing into air flow)

Figure 38

Typical Piping for Type NS Steam Coils and Horizontal Tubes

for Horizontal Airflow

Table 44

Coil Type W Coil Connections (Left and Right Hand) in inches

Header

4.5

7.5

10.5

NOTE: THE PIPING PENETRATION INTO THE UNIT

CASING MUST BE SEALED BEFORE INSULATING.

FAILURE TO SEAL THE PENETRATION WILL PERMIT

INFILTRATION OF UNCONDITIONED AIR INTO THE

SECTION.

When subjected to freezing temperatures, provisions

must be made to protect coils that are not in use. See

section titled “Coil Winterization.”

NOTE: IF GLYCOL IS USED IN THE CHILLED WATER

OR HOT WATER SYSTEMS, BE SURE TO USE A

GLYCOL APPROVED FOR USE WITH COMMERCIAL

COOLING SYSTEMS AND COPPER TUBE COILS.

FOLLOW THE MANUFACTURER’S

RECOMMENDATIONS FOR WATER TREATMENT AND

MIX. FAILURE TO DO SO COULD AFFECT COIL

PERFORMANCE OR DAMAGE THE TUBES OR BRAZE

JOINTS.

Coils should be installed with field fitted drains and

vents to permit winterization of coils not in use, and

to assist in evacuating air from the chilled water

system during start-up.

Code of System Components (Piping Diagrams

Float and thermostatic steam trap

Bucket steam trap

Gate valve

CAUTION

Automatic two-position (on-off) control valve

Automatic three-way control valve

Vacuum breaker

Failure to properly protect coils

not in use during freezing temper-

atures may result in coil freeze-up

damage. Refer to the section titled

“Coil Winterization” for specific

instructions.

Check valve

Strainer

Automatic or manual air vent

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T-Series Climate Changers fitted with steam coils

have labeled holes for piping penetrations. Check

that the coil is installed correctly and that the unit

installation agrees with the submittals.

Proper steam trap selection and installation is

necessary for satisfactory coil performance and

service life. For installation, use the following steps:

1 Install the steam trap discharge 12 inches below

the condensate return connection. 12 inches

provides sufficient hydrostatic head pressure to

overcome trap losses and ensures complete

condensate removal.

Refer to Figure 38 for typical steam coil piping.

CAUTION

Condensate must flow freely from

the coil to prevent coil damage

from water hammer, unequal ther-

mal stresses, freeze-up damage

and corrosion. Complete the fol-

lowing recommendations to pre-

vent damage:

Use float and thermostatic traps with

atmospheric pressure gravity condensate

return, with automatic controls or where the

possibility of low pressure supply steam exists.

Float and thermostatic traps are recommended

because of gravity drain and continuous

discharge operation.

Use bucket traps ONLY when the supply

steam is not modulated and 25 psig or higher.

1 Install a 1/2” 15 swing-check vacuum breaker in

the unused condensate return connection at the

top of the coil. This vacuum breaker should be

installed as close to the coil as possible.

2 Trap each coil separately to prevent holding up

condensate in one or more of the coils.

2 Vent the vacuum breaker to the atmosphere or

pipe it to the return main at the discharge side of

the steam trap.

3 Install strainers as close as possible to the inlet

side of the trap.

4 If installing coils in series airflow, control each coil

bank independently with a automatic steam

control valve. Size the traps for each coil using the

capacity of the first coil in direction of airflow.

NOTE: VACUUM BREAKER RELIEF IS MANDATORY

WHEN THE COIL IS CONTROLLED BY A MODULATING

STEAM SUPPLY OR TWO-POSITION (ON-OFF)

AUTOMATIC STEAM SUPPLY VALVE. VACUUM

BREAKER RELIEF IS ALSO RECOMMENDED WHEN

FACE AND BYPASS CONTROL IS USED.

5 Use a V-Port modulating valve to obtain gradual

modulation of the coil steam supply.

6 Do not modulate systems with overhead or

pressurized returns unless the condensate is

drained by gravity into a receiver, vented to

atmosphere and returned to the condensate

pump.

CAUTION

The 1/2” 15 swing-check vacuum

breaker is recommended because

of the low cracking pressure of 3-

to 5-inches of water. Some other

vacuum breakers, such as spring

loaded ball-check vacuum break-

ers, have cracking pressures as

high as 17-inches of water. Substi-

tution of the 1/2” 15 swing-check

vacuum breaker could result in

damage to the coil by preventing

proper evacuation of condensate

from the coil.

7 Slowly turn the steam on full for at least 10

minutes before opening the fresh air intake on

units with fresh air dampers.

8 Pitch all supply and return steam piping down 1-

inch per 10 feet in the direction of the steam or

condensate flow.

9 Do not drain the steam mains or take-offs through

the coils. Drain the mains ahead of the coils

through a steam trap to the return line.

10 Assure continuous condensate removal.

Overhead returns require 1 psig of pressure at the

steam trap discharge for each 2-foot elevation.

The coil condensate return line must be piped full

size of the condensate trap connection, except for a

short nipple screwed directly into the coil headers

condensate return tapping. Do not bush or reduce

the coil return tapping size.

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Hot Water Coil Piping

Figure 39

Typical Piping for Type WC Water Coil

Figure 40

Typical Piping for Type W Two-Row Water Coil

Refer to Figure 39 through Figure 42 for typical hot

water coil piping.

Code of System Components (Piping Diagrams

q Check the coil for fin damage and straighten if

Float and thermostatic steam trap

Bucket steam trap

necessary.

q Check that the coil is installed correctly with the

air flow in the same direction as indicated on the

nameplate or coil casing.

Gate valve

Automatic two-position (on-off) control valve

Automatic three-way control valve

Vacuum breaker

Check valve

Strainer

Automatic or manual air vent

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Figure 41

3 Install a drain line and shutoff valve in the supply

Typical Piping for Type DD Water Coil

line near the coil.

Type W, D, K, UW and UU water coils are self-

venting only if the water velocity exceeds 1.2 fps.

Type DD coils are self venting only if the water

velocity exceeds 2.5 fps. If water velocity is below

these minimums vent by following one of the

followings methods:

q Install an air vent in the top pipe plug tapping of

the return header

q Vent from the top return header horizontally to the

return piping when the return line rises and is

above the top of the coil.

Refrigerant Coil Piping

Figure 42

Typical Piping for Type W Water Coil

Units that are UL listed shall not have refrigerant

temperatures and pressures exceeding that listed on

the coil nameplate.

For unit-installed refrigerant coils, packed elbows are

provided. Pipe connections can be made as shown in

Figure 43 .

Figure 43

Type F Refrigerant Coil with Packed Elbow

Perforated Plate

Panel

(Packed Elbow)

Cut Here For Piping

Type W, WC, UA, UW, and UU hot water coils are

self-venting only if the water velocity exceeds 1.5 feet

per second (fps). If it is below 1.5 fps, vent by one of

the following methods:

Distributor

Coil

1 Install an air vent in the top pipe plug tapping of

NOTE: TYPE UF COILS ARE FITTED WITH 5/8”

TUBE AND CAP ASSEMBLY TO SEAL

VACUUM AND NITROGEN CHARGE. DO NOT

USE CAP AND TUBE TO MAKE

the return header.

2 Vent from the top return header horizontally to the

return piping when the return line rises and is

above the top of the coil. (See Figure 41 through

Figure 42 .)

REFRIGERATION CONNECTIONS.

NOTE: TYPE F AND UF COILS HAVE BEEN

CAUTION

DEHYDRATED AND CHARGED WITH A HOLDING

CHARGE OF DRY NITROGEN. TO PREVENT LEAKS

AND SYSTEM CONTAMINATION, DO NOT BREAK THE

SEALS UNTIL THE COIL IS INSTALLED.

Do not throttle or modulate the

water flow for coils that are

exposed to freezing temperatures.

Coil damage may result from coil

freeze-up.

1 Check that the coil is installed correctly with

airflow in the same direction as indicated on the

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coil nameplate or casing. The suction connection

must be at the bottom of the suction header.

General Refrigerant Piping

Recommendations

2 Follow accepted refrigeration piping practices and

safely precautions for typical refrigerant coil piping

and components. See Figure 43 . Specific

recommendations are provided with the highside

components, including instructions for pressure-

testing, evacuation, and system charging.

General recommendations for component

selection and line sizing follow.

IMPORTANT: REFER TO THE NOTE ON THE INSIDE

FRONT COVER OF THIS MANUAL REGARDING

HANDLING OF REFRIGERANTS

Liquid Line Components

Trane recommends the use of a properly sized liquid

line filter-drier installed upstream from the expansion

valve and as close to the evaporator coil as possible.

Base filter-drier selection on a maximum pressure

drop of 2 psi at the design condition.

3 Leak-test the entire refrigeration system after all

piping is complete.

4 Charge the unit according to approximate weight

requirements, operating pressures and

1 Install moisture indicator/sight glass between the

expansion valve and filter-drier. The moisture

indicator/sight glass must be sized to match the

size of the liquid line at the thermal expansion

valve.

superheat/subcooling measurements.

5 Adjust the thermal expansion valve setting if

necessary.

2 Size liquid line shutoff valve with an access port

using the selected liquid line OD, and install it

close to the condenser.

3 Minimize use of other valves, tube bends and

reducers since these items tend to increase

pressure drop and to reduce subcooling at the

expansion valve. Liquid line receivers, other than

those factory-installed, are not recommended.

4 The Thermal Expansion Valve (TEV) must be

selected for proper size and capacity. The size of

the TEV should cover the full range of loadings.

Check that the valve will successfully operate at

the lightest load condition. Also consider the use

of a hot gas bypass valve when sizing the TEV.

Select expansion valves with external equalizer

connections, and those designed to operate

against a back pressure of 20 pounds per square

inch higher than actual evaporator pressure.

5 Install the TEV directly on the coil liquid

connection (distributor) provided. The liquid

distributor must be in a true vertical position.

CAUTION

Disassemble the thermal expan-

sion valve before completing the

brazing connections. If necessary,

wrap the valve in a cool, wet cloth

while brazing. Failure to protect

the valve from high temperatures

may result in damage to the inter-

nal components.

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Suction Line Components

Install suction line pressure tap on the leaving side of

the evaporator coil near the TEV sensing bulb

location. Accurate superheat measurement and

thermal expansion valve adjustment demands that

suction pressure be measured near the evaporator

coil.

Usually, suction line filter-driers are only necessary

on systems that have experienced a severe

compressor motor burnout or other failure which

results in extremely high refrigerant temperature. Do

not leave this filter-drier in the suction line

permanently.

Liquid Line Sizing

All compressors have a Refrigerant Charge Limit

(RCL) that must not be exceeded. Since the RCL

and pressure drop are in direct conflict with each

other, Trane recommends that the liquid line be sized

as small as possible, while maintaining a low enough

pressure drop to ensure 5°F of subcooling at the

expansion valve.

Suction Line Sizing

Suction line tubes must be sized to maintain

refrigerant vapor velocities that are high enough to

ensure oil entertainment under all operating

conditions.

It is not necessary to pitch horizontal suction lines

toward the compressor when the refrigerant coil is

used with Trane condensing units that are designed

with a gas trap in the suction line just prior to the

compressor.

CLCH-IM-16A

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23 . See unit control drawings for specific connection

information.

Wiring

For typical field wiring to units with DDC:

WARNING

Disconnect electrical power

source before servicing the unit or

connecting electrical wires.

q Provide 120 VAC power for control. A dedicated

circuit is recommended. Units with a factory-

mounted starter or VFD do not require this circuit

as they are powered by the oversized control

transformer in the starter or VFD.

Failure to do so may result in per-

sonal injury or death from electrical

shock or entanglement in moving

parts. If the unit includes a factory-

mounted starter, use of the lockout/

tagout on the disconnect is required

while servicing the unit.

q If unit ships in multiple sections, fasten quick

connects (Figure 23 ) before sections bolt

together.

q Field mount and wire outside air sensor and

space sensor, if ordered.

If the unit does not include a factory-mounted starter,

wiring to the unit fan motor must be provided by the

installer and must comply with all national and local

electrical codes. The installer must also furnish a

fused disconnect switch in compliance with national

and local electrical codes. Fan motors require

overload protective devices rated or selected in

compliance with the National Electric Code or

Canadian Electric Code. Specific unit and motor

connection diagrams are attached to the unit.

CAUTION

Use copper conductors only for

terminal connections. Use of alu-

minum or other type of wiring may

result in galvanic corrosion or

overheating and resultant equip-

ment damage.

Fan motors require motor overload protective

devices that are rated or selected in compliance with

the National Electric Code or Canadian Electric

Code. Specific unit and motor connection diagrams

are provided on the unit. If wiring directly to the

motor, a flexible connection at the motor to permit fan

belt adjustment should be provided. Fractional

horsepower motors may be factory connected to a

terminal box on the unit. If this construction is

provided, the installer should complete field wiring to

this connection box.

For a typical high voltage wiring schematic, see

Figure 44 following.

Connection of junction sections to unit end devices is

accomplished using the connections shown in Figure

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Figure 44

Typical High Voltage Wiring Schematic

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14 Leave the unit installation and maintenance

manual with the unit.

,QVWDOODWLRQꢀ&KHFNOLVW

Prestart-Up Checks

Before operating the unit, complete the following

checks for safe and efficient operation.

The following is an abbreviated list of the detailed

installation information given in this manual and

should be used as an aid to ensure proper

installation. For complete instructions, refer to the

appropriate sections of the manual.

WARNING

Disconnect electrical power

source when connecting or dis-

connecting electrical wires for test

procedures. Do not open service

access doors while the unit is

operating. Failure to exercise cau-

tion when completing test proce-

dures or while inspecting unit

operation may result in injury or

death from electrical shock, air

movement or rotating parts.

WARNING

Disconnect electrical power

source when servicing the unit.

Failure to do so may result in

injury or death from electrical

shock.

Secure drive sheaves before ser-

vicing the unit to ensure that rotor

cannot free-wheel. Failure to

secure drive sheaves can cause

severe personal injury.

q Rotate all fan wheels manually. Fans should turn

freely in the proper direction.

1 Examine the unit and components for material

q Check fan drive belt tension.

shortage or shipping damage.

NOTE: IF T-SERIES CLIMATE CHANGER FAN IS

GOING TO OPERATE AT OTHER THAN DESIGN RPM

OR WITH A VARIABLE SPEED DRIVE NOT SUPPLIED

BY TRANE, THE UNIT VIBRATION LEVELS SHOULD

BE CHECKED AT THE NEW RPM AND THROUGHOUT

THE SPEED RANGE. RE-BALANCE OR CORRECT

VIBRATIONS AS NECESSARY.

2 Check unit location for unit dimensions, weights

and clearances.

3 Rig each section properly and hoist it to its final

position.

4 For split ship units with factory mounted controls,

connect color coded and numbered quick connect

plugs (reference Figure 44 ).

q Check fan hub set screws, sheave set screws and

bearing set screws for proper torque (Table 45 ).

Fan sheaves should be tight and aligned. Bearing

set screws should be aligned. See section titled

“Periodic Maintenance” for alignment instructions.

5 Check that unit is installed level.

6 Remove fan isolator tie-down bolt, if unit is not

externally isolated. See Figure 18 and Figure 19 .

7 Inspect Inlet Guide Vanes and adjust if necessary.

Table 45

8 Install damper operator motors and connecting

linkage. Check damper operation and linkage

alignment.

Fan Bearing Setscrew Torque Settings (lb-ft)

Screw Size

Hex Size

1/8

Torque

5.5-7.5

10.5-13.7

19-25

1/4

9 Install filters, if supplied.

5/32

3/16

7/32

1/4

5/16

3/8

10 Connect supply and return air ductwork.

11 Complete coil and condensate drain piping

29-37.5

42-54.2

7/16

1/2

connections.

12 Reference CLCH-IOP-1 for more details on the

installation of units with factory mounted controls.

q Inspect fan motor and bearings for proper

lubrication. Refer to Table 49 for fan grease

recommendations. Contact the motor

13 Complete electrical connections to the unit and

PCM.

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representative for motor lubrication

recommendations.

q Inspect electrical connections. They should be

clean and secure. Compare actual wiring with

specific diagrams on the unit.

q Check piping and valve for leaks. Open or close

the valves to check operation. Drain lines should

be open.

q If unit has a refrigerant coil, it must be charged,

leak-tested, and ready for operation according to

instructions provided with the condenser

equipment. Adjust superheat setting.

q Check that air filters are in place and positioned

properly.

q Remove all foreign material from the drain pan

and check pan opening and condensate line for

obstructions.

q Check unit for debris.

q Close and secure all unit access doors.

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7 Check unit for debris.

6WDUWꢁ8S

8 Reference CLCH-IOP-1 for more details on the

start-up of units with factory mounted controls.

Start-Up Procedures

After completing all prestart-up checks and

procedures, the unit may be started. The following

checks and adjustments should be made during

initial start-up:

CAUTION

Inadequate lubrication of fan

motor or bearings may result in

premature bearing or motor fail-

ure.

WARNING

Disconnect electrical power prior

to access into a fan or ductwork.

Even when locked out electrically,

fans may cause injury or damage if

the impeller is subject to “wind-

milling.” The impeller should be

secured to physically restrict rota-

tional movement. Failure to secure

impeller can cause severe per-

sonal injury or death.

1 Inspect electrical connections. They should be

clean and secure. Compare actual wiring with

specific diagrams provided on the unit.

2 Check piping and valves for leaks. Open or close

the valves to check for proper operation. Drain

lines should be open.

CAUTION

The use of untreated or improperly

treated water in unit coils may

cause scaling, erosion, corrosion,

algae, slime or other equipment

damage. Consult a qualified water

treatment specialist to determine if

water treatment is required. The

Trane Company assumes no

responsibility for equipment dam-

age caused by untreated or

Disconnect electrical power

source when connecting or dis-

connecting electrical wires for test

procedures. Do not open service

access doors while the unit is

operating. Failure to exercise cau-

tion when completing test proce-

dures or while inspecting unit

operation may result in injury or

death from electrical shock, air

movement or rotating parts.

improperly treated water.

3 If equipped with a refrigerant coil, charge and

leak-test the unit to and ready it for operation

according to instructions provided with the

condenser equipment. Adjust superheat setting.

If the unit was stored for an extended period of time,

the following items should be checked before starting

the unit.

4 Check that all air filters are in place and

positioned properly. Under Periodic Maintenance,

see section titled “Air Filters.”

1 Inspect motor bearings for moisture and rust.

Replace bearings if necessary and repack with

new grease.

NOTE: UL-LISTED UNITS REQUIRE A “TOOL-ONLY”

REMOVABLE LATCH ON ACCESS DOORS. THE

HANDLE TIE-DOWN SCREW SHIPPED WITH THE UNIT

MEETS THIS REQUIREMENT, AND SHOULD REMAIN

IN PLACE WHEN THE ACCESS DOOR IS CLOSED.

2 Check motor winding. An acceptable winding

resistance reading is from 6 meg-ohms to infinity.

If reading is less than 5 meg-ohms, winding

should be dried out in an oven or by a blower.

5 Close and secure all unit access doors. Check

that the latch set screws are tight.

3 Inspect the entire motor for rust and corrosion.

6 Remove all foreign material from the drain pan

and check drain pan opening and condensate line

for obstructions.

4 Lubricate the motor as instructed in the section

titled “Periodic Maintenance,” or as indicated by

the maintenance tag on the motor.

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5 Bump-start unit and observe the fan wheel for

proper rotation, as indicated by rotation arrow

located on fan housing.

sheaves and tighten the sheave set screws to the

proper torque given in Table 47 .

Figure 45

Proper Drive Alignment

6 Measure the motor voltage and amperage on all

phases to ensure proper operation. The readings

should fall within the range given on the motor

nameplate.

Lines Must

Center Lines

Be Parallel

Must Coincide

Maximum allowable voltage imbalance is two

percent. Voltage imbalance is defined as 100 times

the sum of the deviation of the three voltages from

the average, divided by twice the average voltage.

For example, if the three measured voltages are 221,

230 and 227, the average voltage would be 226

volts.

Fixed

Sheave

Fixed

Sheave

Straight

Edge

Straight

Edge

The percent of voltage imbalance is then calculated:

100 X {[226-221] + [230-226] + [227-226]}

2 X 226

= 2.2% (Unacceptable)

In this example, 2.2 percent imbalance is not

acceptable and the power company should be

notified to correct it.

Adjustable

Sheave

q Check unit vibration if the fan speed is changed

more than 5% from the original designed rpm, or if

parts such as shafts, fan wheels, bearings, or

other drive components are replaced. Do not

exceed max. fan rpm.

WARNING

Disconnect electrical power prior

to access into a fan or ductwork.

Even when locked out electrically,

fans may cause injury or damage if

the impeller is subject to “wind-

milling.” The impeller should be

secured to physically restrict rota-

tional movement. Failure to secure

impeller can cause severe per-

sonal injury or death.

q Pay particular attention to any vibration, noise or

overheating of the motor and fan bearings.

(Bearings may run warm during break in.)

Excessive Vibration

EXCESSIVE VIBRATION MUST BE CORRECTED TO

PREVENT BEARING AND SHAFT DAMAGE. SEE THE

SECTION TITLED “TROUBLESHOOTING” FOR

DETAILS ON THE COMMON CAUSES FOR VIBRATION.

Determine Fan RPM

Fan Belt Alignment

Fan rpm can be determined by using a strobe-type

tachometer, or revolution counter.

Tighten the belts slightly and rotate the drive several

times.

On multiple belt drives, determine that the force of

deflection is approximately the same on each belt by

pushing each belt in an equal distance at a point

halfway from each sheave. If this force is not the

same for each belt, the motor and fan shaft are not

parallel. Realign as required.

Sheave Alignment

Align the fan and motor sheaves by using a

straightedge. The straightedge must be long enough

to span the distance between the outside edges of

the sheaves. When the sheaves are aligned, the

straightedge will touch both sheaves at points A

through D to confirm that the shaft is parallel. For

uneven width sheaves, place a string in the center

groove of both sheaves and pull tight. Adjust

After realignment, tighten the belts again to the

standard belt tensioning specifications. See the

following section.

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Figure 47

Fan Sheave Pitch Diameter

Over-tensioning of belts can cause damage to

bearings, shafts, and drive components. Belts should

not squeal at start-up. Belt tension should be

rechecked after 8 hours, 24 hours, and 100 hours of

operation and monthly thereafter. When the belt is in

operation, the tight side of the belt should form a

straight line from sheave with only a slight bow on the

slack side.

Fan Belt Tension

NOTE: FAN BELT TENSION SHOULD BE CHECKED AT

LEAST THREE TIMES DURING THE FIRST DAYS OF

OPERATION, SINCE THERE IS A RAPID DECREASE IN

TENSION UNTIL BELTS SETTLE IN. REFER TO THE

DRIVE STICKER FOR PROPER TENSION.

Figure 46

Typical Drive Belt Label

Table 46

Values for K-Factor (Belt Cross Section Types)

Belt Type

K Factor

3V 5V 8V AX BX CX DX

12 25 11 18 54 101

Belt Type

K Factor

WARNING

Disconnect electrical power

source and allow all rotating

equipment to stop completely

before inspecting or servicing the

unit. Failure to do so may result in

personal injury or death from elec-

trical shock or moving parts.

Figure 48

Belt Tension Measurement

Disconnect electrical power prior

to access into a fan or ductwork.

Even when locked out electrically,

fans may cause injury or damage if

the impeller is subject to “wind-

milling.” The impeller should be

secured to physically restrict rota-

tional movement. Failure to secure

impeller can cause severe per-

sonal injury or death.

Installation and Maintenance

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Figure 49

Belt Tensioner

Proper belt tension is required to ensure maximum

bearing and drive component life and is based on fan

brake horsepower requirement. Use Table 47 to find

the proper belt tension and refer to the inset for an

example. To use the table, you must know:

q Fan design brake horsepower (bhp) per belt (not

motor hp)

q Fan rpm

q Fan sheave pitch diameter, found by measuring

where the middle of the belt rides in the sheave

(See Figure 47 )

q Type of belt cross-section (stamped on the belt)

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Table 47

Belt Tension

Installation and Maintenance

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NOTE: THERE IS A LABEL LOCATED ON THE

BEARING SUPPORT ON THE DRIVE SIDE OF THE

UNIT THAT LISTS ALL DRIVE PARTS AND THE

PROPER BELT TENSION FOR THE SPECIFIC DRIVE.

As shown in the example of Table 47 , the correct

tension (pounds force) is 9.6 pounds, at 1/2-inch

deflection. Deflection is determined by dividing the

belt span distance by 64, as shown in Figure 48 .

To measure belt tension, use a belt tensiometer as

shown in Figure 49 . Determine actual deflection by

depressing one belt with the belt tensiometer and

measuring the deflection relative to the other belts or

to belt line. Adjust the belt tension to the correct

pounds force and tighten all set screws to the proper

torque. (See Table 47 .)

CAUTION

Do not over-tension the belts.

Excessive tension will reduce fan

and motor bearing life, accelerate

belt wear and possibly cause shaft

failure.

For belt cross-section types not given in Table 47 ,

use the following equations to calculate correct belt

tension.

F = (T + K)/16

where

F = force measured in pounds at specific deflection.

K = constant determined by belt cross-section type.

T =24,750 (fan hp per belt)/ belt speed

Belt speed = ((fan pitch diameter)/12) X 3.1416 X

fan rpm

For example, given the following:

Motor sheave pitch diameter: 5.7 inches, eight groove

Fan sheave pitch diameter: 10.0 inches, eight groove

Fan horsepower: 2.4 bhp

Fan rpm: 1000 rpm

Belt type: C

Sheave span: 32 inches

Belt speed = (10/12) X 3.14 X 1000 = 2618

T = (24,750 X (24 bhp/2 belts)/2618 = 113.4 lb

F = (13.4 + 40)/16 = 9.6 lb.

Also, D =(Belt span (inches))/64 = 32/64 =.50 in.

Therefore, the belt tensiometer should read 11.5

pounds force at 15/16-inch deflection. This will yield

159.4 pounds force belt tension.

Belt tensions determined by using Table 46 are

minimum values. The correct operating tension for a

V-belt drive is the lowest tension at which the belts

will not slip under the peak load conditions. It may be

necessary, however, to increase the tension of some

drives to reduce excessive belt flopping or to reduce

excessive start-up squealing.

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operating conditions include high speeds, moist or

dirty air, or high temperatures.

3HULRGLFꢀ0DLQWHQDQFH

q Check and adjust fan belt tension.

The following checklist is provided as an abbreviated

guide to periodic maintenance. Detailed procedural

information is given after this checklist.

Every Three to Six Months

q Check fan bearing grease line connections. Lines

should be tight to the bearings.

q Relubricate fan bearings.

WARNING

Disconnect electrical power and

allow rotating parts to stop before

servicing the unit. Exercise cau-

tion if unit must be on for test or

maintenance procedures. Failure

to do so may result in injury or

death from electrical shock or

moving parts.

q Check motor lubrication. Recommendations are

provided on the motor tag or on a unit sticker.

q Check bearing and motor bracket bolt torque.

q Align fan and motor sheaves. Tighten sheave set

screws to the proper torque.

q Check and adjust fan belt tension.

q Tighten electrical connections.

q Inspect coils for dirt build-up or coil freeze-up.

Disconnect electrical power prior

to access into a fan or ductwork.

Even when locked out electrically,

fans may cause injury or damage if

the impeller is subject to “wind-

milling.” The impeller should be

secured to physically restrict rota-

tional movement. Failure to secure

impeller can cause severe per-

sonal injury or death.

Every Year

q Inspection the unit casing for corrosion. If damage

is found, clean and repaint the surface with a rust-

resistant primer and vinyl chlorinated lacquer.

q Clean the fan wheels and fan shaft. Remove rust

with an emery cloth and apply a coat of LPS #3 or

an equivalent.

q Inspect the condensate drain pan and drain line,

remove sludge or foreign materials that might

obstruct proper drainage. Remove obstacles.

After 48 Hours Operation

Belts have acquired their permanent stretch.

Readjust but do not over-tighten. See section titled

“Fan Belt Tension” for instructions.

Table 48

Minimum Hex Head Bolt Torque in lb-ft

Grade 5 Bolts

Thread

Weekly

Observe unit weekly for any change in running

condition and unusual noise.

Size (inches*)

Designation

Min. Torque

UNC

1/4, 20

1/4, 28

5/16, 18

5/16, 24

3/8, 16

3/8, 24

7/16, 14

7/16, 20

1/2, 13

1/2, 20

9/16, 12

UNF

Every Month

UNC

q Check air filters. Clean or replace if clogged or

dirty. Coat permanent filters with oil after cleaning.

Change bag filters when pressure drop is 1-inch

W.G.

UNF

UNC

UNF

q Relubricate fan bearings if operating conditions

include high speeds, moist or dirty air, or high

temperatures.

UNC

UNF

UNC

q Relubricate motor bearings in accordance with

UNF

motor manufacturer’s recommendations if

UNC

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Table 48

10 Use a scraper or other tools to remove any solid

matter. Remove solid matter with a vacuum

device that uses high efficiency particulate

arrestance (HEPA) filters with a minimum

efficiency of 99.97% at 0.3 micron particle size.

Minimum Hex Head Bolt Torque in lb-ft

Grade 5 Bolts

Thread

Size (inches*)

Designation

Min. Torque

118

11 Thoroughly clean the contaminated area with a

mild bleach and water solution or an EPA-

UNF

9/16, 18

5/8, 11

5/8, 18

3/4, 10

3/4, 16

7/8, 9

UNC

150

approved sanitizer specifically designed for HVAC

use. Carefully follow the sanitizer manufacturer’s

instructions regarding the use of the product.

UNF

176

UNC

254

12 Immediately rinse the drain pan thoroughly with

fresh water to prevent potential corrosion from the

cleaning solution of the drain pan and drain line

components.

UNF

301

UNC

358

UNF

422

7/8, 14

1, 8

UNC

500

13 Allow the unit to dry thoroughly before putting the

UNF

602

1, 14

system back into service.

14 Determine and correct the cause of the microbial

*NOTE: Soft metric conversions not acceptable for screw and hex

sizes

contamination.

15 Be careful that the contaminated material does

not contact other areas of the unit or building.

Properly dispose of all contaminated materials

and cleaning solution.

q Check damper linkages, set screws and blade

adjustment. Clean, but do not lubricate, the nylon

damper rod bushings.

q Clean damper operators.

IMPORTANT: STANDING WATER IN DRAIN PANS CAN

PROMOTE MICROBIAL GROWTH (MOLD) THAT MAY

CAUSE UNPLEASANT ODORS AND SERIOUS

HEALTH-RELATED INDOOR AIR QUALITY

q Inspect the control and power box wiring for

secure connections and insulation.

PROBLEMS. IF MOLD IS FOUND, IT MUST BE

REMOVED IMMEDIATELY AND THAT PORTION OF

THE UNIT PROPERLY CLEANED AND SANITIZED.

q Rotate the fan wheel and check for obstructions in

the fan housing. The wheel should not rub on the

fan housing. Adjust the center if necessary and

tighten wheel set screws to the proper torque.

Air Filters

q Check condition of gasketing and insulation

Catalog data tables provide filter size, type and

quantity.

around unit, door and dampers.

q Examine flex connections for cracks or leaks.

Repair or replace damaged material.

Throwaway Filters

To replace throwaway filters, install new filters with

the directional arrows pointing in direction of airflow.

Drain Pans

Inspecting and Cleaning Drain Pans

NOTE: FILTERS MUST HAVE AN AIRTIGHT SEAL TO

PREVENT AIR BYPASS. IF USING OTHER THAN

TRANE-SUPPLIED FILTERS, APPLY FOAM

GASKETING TO THE VERTICAL EDGES OF THE

FILTER.

For units with sloped drain pans, if evidence of

standing water or condensate overflow exists,

identify and remedy the cause immediately. (Refer to

the troubleshooting section for possible causes and

solutions.) If microbial growth (mold) in the drain pan

is observed, clean the pan immediately using the

following procedure:

Permanent Filters

To clean permanent filters, wash under a stream of

water to remove dirt and lint. Remove oil filter with a

wash of mild alkali solution. Rinse in clean, hot water

and allow to dry. Coat both sides of the filter by

immersing or spraying it with Air Maze Filter Lote W

or an equivalent. Allow to drain and dry for about 12

hours.

7 Disconnect all electrical power to the unit.

8 Don the appropriate personal protective

equipment (PPE).

9 Remove all standing water.

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Cartridge or Bag Filters

industrial cleaning solution. Carefully follow the

cleaning solution manufacturers instructions

regarding use of their product.

To install cartridge or bag filters, complete the

following:

5 If microbial growth (mold) is present, remove the

contamination (Step 2) and thoroughly clean the

affected area with an EPA-approved sanitizer

specifically designed for HVAC use. Carefully

follow the sanitizer manufacturers instructions

regarding the use of the product.

WARNING

Disconnect electrical power

source, and allow all rotating

equipment to stop before inspect-

ing or servicing the unit. Failure to

do so may result in personal injury

or death from electrical shock or

rotating parts.

6 Rinse the affected surfaces thoroughly with fresh

water and a fresh sponge to prevent potential

corrosion of metal surfaces.

7 Allow the unit to dry completely before putting it

back into service.

1 Open the filter section access door and remove

the filters and block-offs from their installed

position.

8 Use caution to assure that any contaminated

material does not contact other areas of the unit

or building. Properly dispose of all

2 Keeping the bag filters folded, slide each filter into

the filter rack, pushing them tightly against the

unit. Pleats should be in the vertical position.

contaminated materials and cleaning solution.

IMPORTANT: IF MICROBIAL GROWTH (MOLD) WAS

FOUND, THE CAUSE OF THE CONTAMINATION MUST

BE DETERMINED AND ACTION TAKEN TO ASSURE IT

DOES NOT RECUR.

3 If using the optional pre-filters, slide them into the

appropriate filter rack.

4 If fixed and adjustable block-offs are provided with

the unit, slide the fixed block-offs into the filter

track before the adjustable block-off. The

adjustable block-off should always be installed

last, next to the access door.

Fan Bearings and Motors

Bearing Set screw Alignment

Align bearing set screws as illustrated in Figure 50 .

Reference Table 45 for bearing set screw torque.

5 Close and secure the access door. If the door can

be closed without compressing the filter, adjust

the block-off by loosening its screws and position

it to provide an airtight seal.

Fans

Inspecting and Cleaning Fans

Fan sections of air handlers should be inspected

every six months at a minimum or more frequently if

operating experience dictates. Accumulated dirt and

organic matter on the interior surfaces of fans should

be cleaned immediately. The suggested procedure

for cleaning these surfaces is:

1 Disconnect all electrical power to the unit.

2 Don the appropriate personal protective

equipment (PPE).

3 Use a portable vacuum with HEPA filtration to

remove the loose dirt and organic matter. The

filter should be 99.97% efficient at 0.3 micron

particle size.

4 If no microbial growth (mold) exists, thoroughly

clean the fan and associated components with an

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Figure 50

Bearing Setscrew Alignment

Set Screws (2)

Fan Bearing Lubrication

recommended lubricants and bearing grease

capacities.

Table 49

Recommendations for Grease-Lubricated Fan Bearings

CAUTION

Greasing Intervals

Improper lubrication can result in

premature bearing failure.

Operating Conditions

-20°F to +140°F

3-6 months

1-3 months

1-4 weeks

140°F to 200°F

1-3 months

1-4 weeks

Clean, Dry

Dirty, Dry

Do not mix greases with different

bases within the bearing. This can

cause an audible squealing noise

that may be transmitted through

the system ductwork. Premature

bearing failure may result.

1-14 days

Dirty, Wet, High

Humid.

Recommended

Greases

Recommended Operating Range

-20°F to +250°F

Texaco-Multi Fak #2

Shell Alvania #2

Mobil Mobilux #2

Exxon Unirex #2

Texaco Prem. RB

Mobil 532

-20°F to +250°F

To lubricate the fan bearings, complete the following:

-20°F to +250°F

WARNING

-20°F to +250°F

Disconnect electrical power

source before servicing the unit. If

unit must be on for maintenance

procedures, exercise extreme cau-

tion. Failure to do so may result in

personal injury or death from elec-

trical shock or entanglement in

moving parts.

-20°F to +250°F

-65°F to +250°

Exxon Beacon

Keystone 84H

Shaft Size (In)

1/2 to 3/4

-40°F to +225°F

Max. Grease Cap. of Bearing (Oz.)

1/8

3/8

5/8

7/8

1-1/4

7/8 to 1-3/16

1-1/4 to 1-1/2

1-11/16 to 1-15/16

2 to 2-7/16

Disconnect electrical power prior

to access into a fan or ductwork.

Even when locked out electrically,

fans may cause injury or damage if

the impeller is subject to “wind-

milling.” The impeller should be

2-1/2 to 2-15/16

Note: Greases used should conform to NLGI No. 2 penetration.

Fan bearings should be lubricated with a lithium base

grease which conforms to NLGI Number 2 for

consistency. See Table 49 and Table 50 for

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secured to physically restrict rota-

tional movement. Failure to secure

impeller can cause severe per-

sonal injury or death.

WARNING

Disconnect power source for

motor lubrication. Failure to do so

may result in injury or death.

1 Disconnect main power switch.

Disconnect electrical power prior

to access into a fan or ductwork.

Even when locked out electrically,

fans may cause injury or damage if

the impeller is subject to “wind-

milling.” The impeller should be

secured to physically restrict rota-

tional movement. Failure to secure

impeller can cause severe per-

sonal injury or death.

2 Check grease lines for tight connections at the

grease fitting.

3 Using a manual low pressure grease gun, add

grease until a light bead of grease appears at the

bearing grease seal. Turn the fan wheel manually

while adding grease.

Fan Motors

Inspect fan motors periodically for excessive

vibration or temperature. Operating conditions will

vary the frequency of inspection and lubrication.

Table 51 lists recommended motor greasing

intervals. Motor lubrication instructions are found on

the motor tag or nameplate. For a list of compatible

greases, see Table 49 .

Coil Cleaning

The frequency of required cleaning is dependent on

the operating hours of the system, filter maintenance

and efficiency and dirt load.

Table 50

IMPORTANT: COILS BECOME EXTERNALLY FOULED

AS A RESULT OF NORMAL OPERATION. DIRT ON THE

SURFACE OF THE COIL REDUCES IT’S ABILITY TO

TRANSFER HEAT THAT CAN RESULT IN COMFORT

PROBLEMS, INCREASED RESISTANCE TO AIR FLOW

AND THUS INCREASED OPERATING ENERGY COSTS.

IF THE DIRT ON THE SURFACE OF THE COIL

BECOMES WET, SUCH AS COMMONLY OCCURS

WITH COOLING COILS, MICROBIAL GROWTH (MOLD)

CAN RESULT THAT MAY CAUSE UNPLEASANT

ODORS AND SERIOUS HEALTH-RELATED INDOOR

AIR QUALITY PROBLEMS.

Fan Bearing Maximum Grease Capacity

Shaft Size in inches

Capacity in fl. oz.

1/7

3/8

5/8

7/8

1-1/4

1/2 - 3/4

7/8 - 1-3/16

1-1/4 - 1-1/2

1-11/16 - 1-15/16

2 - 2-7/16

2-1/2 - 2-15/16

Steam, hot water and chilled water coils

Table 51

Recommended Motor Greasing Schedule

Steam, hot water and chilled water coils should be

kept clean to maintain maximum performance. If fins

become dirty, clean with steam and detergent, hot

water spray and detergent, or one of the

Avg. Daily

Operating

Hours

Avg.

Environment

.3 to 7.5 HP

Motors

10 to 30 HP

Motors

commercially available chemical coil cleaners. Rinse

coils thoroughly after cleaning.

Clean and

Dry

Every 5 years Every 3 years

8-16

Moderate Dirt Every 2 years

or Moisture

Every year

12-24

Any

WARNING

Severe (very

dirty or high

Every 6

months

Every 3

months

Follow all directions provided with

chemical cleaners to avoid per-

sonal injury and/or coil damage.

Commercially available chemical

cleaners may contain caustic or

hazardous agents.

temperatures)

To relubricate the motor, consult the maintenance tag

provided by the vendor.

Refer to Table 48 for minimum torque of motor

mounting and bearings bolts.

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1 Disconnect all electrical power to the unit.

CAUTION

Follow directions provided with

the cleaner to avoid coil damage.

2 Don the appropriate personal protective

equipment (PPE).

3 Gain access to the coil section of the unit (both

sides).

4 Use a soft brush to remove loose debris from both

WARNING

sides of the coil.

Never use steam or hot water to

clean a refrigerant coil. Dangerous

pressures may be built up by the

improper application of heat

resulting in equipment damage or

personal injury.

5 Use a steam cleaning machine, starting from the

top of the coil and working downward. Clean the

leaving air side of the coil first, then the entering

air side. Use a block-off to prevent steam from

blowing through the coil and into a dry section of

the unit.

6 Repeat step 5 as necessary.

1 Follow steps 1-4 from Steam and Water Coil

7 Confirm that the drain line is open following the

Cleaning procedure preceding.

cleaning.

2 Mix a high quality coil cleaning detergent with

water according to the manufacturers instructions.

If the detergent is strongly alkaline after mixing

(PH 8.5 or higher), it must contain an inhibitor.

Carefully follow the detergent manufacturers

instructions on the use of the product.

8 Allow the unit to dry thoroughly before putting the

system back in service.

9 Straighten any coil fins that may have been

damaged during the cleaning process with a fin

rake.

3 Place the mixed solution in a garden pump-up

sprayer or high pressure sprayer. If a high

pressure sprayer is used, note the following:

10 Replace all panels and parts and restore electrical

power to the unit.

11 Use caution to assure that any contaminated

material does not contact other areas of the unit

or building. Properly dispose of all

q Maintain a minimum nozzle spray angle of 15

degrees.

contaminated materials and cleaning solution.

q Spray perpendicular to the coil face.

q Protect other areas of the air handler and internal

controls from contact with moisture or the

cleaning solution.

Type K cooling coils

Type K cooling coils have removable headers for

cleaning. A small nylon or fiber brush may be used to

clean the tubes. After cleaning, flush with water.

When removing any header, replace the rubber

sealing gasket and be sure that it seats properly

when header is installed. If necessary, pull out

turbulators, clean the tubes and replace turbulators.

When header covers are replaced, apply washers

under the bolt heads. Bolts should be evenly

tightened to 50 pound-feet of torque.

q Keep the nozzle at least 6 inches from the coil.

q Do not exceed 600 psi.

4 Spray the leaving air side of the coil first, then the

entering air side. Use a block-off to prevent spray

from going through the coil and into a dry section

of the unit and/or system ductwork. Carefully

follow the cleaning solution manufactures usage

instructions.

Refrigerant coils

5 Thoroughly rinse both sides of the coil and the

Refrigerant coils should be kept clean to maintain

maximum performance. If fins become dirty, clean

with cold water and detergent, or one of the

commercially available chemical coil cleaners. Rinse

coils thoroughly after cleaning.

drain pan with cool, clean water.

6 Repeat steps 4 and 5 as necessary.

7 Straighten any coil fins that may have been

damaged during the cleaning process with a fin

rake.

8 Confirm that the drain line remains open following

the cleaning process.

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9 Replace all panels and parts and restore electrical

tightened beginning in the center and working toward

the outside.

power to the unit.

10 Allow the unit to dry thoroughly before putting the

system back into service.

11 Use caution to assure that any contaminated

material does not contact other areas of the unit

or building. Properly dispose of all

contaminated materials and cleaning solution.

Coil Winterization

Provisions must be made to drain coils that are not in

use when subjected to freezing temperatures. Coil

type NS may be adequately drained in its pitched

position within the unit and the installer must provide

appropriate piping for adequate drainage.

Coil types UU, D, DD, (provided with drain and vent)

K, W, WC, and P can be adequately drained as

installed in their level position.

CAUTION

Failure to properly drain and vent

coils when not in use during freez-

ing temperatures may result in coil

freeze-up damage.

CAUTION

Use caution in removing header

plugs from P2, P4 and P8 coils.

Over torquing may result in

twisted tubes.

Type UW Coil - (Leveled/pitched— not fully

drainable)

Remove the vent and drain plugs and blow the coils

out as completely as possible with compressed air.

The coils should then be filled and drained several

times with full strength inhibited ethylene glycol, so

that it will mix thoroughly with the water retained in

the coil. Drain the coil out as completely as possible.

Type K Coils

To winterize Type K coils, remove the header covers.

If tubes are fouled, clean with nylon or fiber brush. To

ensure that no water will remain in the coil, do not

replace the header covers until the coils are put back

into service. When the coils are put back into service,

new gaskets must be used. When header covers are

replaced, apply washers under the bolt heads and

tighten bolts evenly to 50 pound-feet. Bolts should be

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before inspecting or servicing the

unit. Failure to do so may result in

personal injury or death from elec-

trical shock or moving parts.

7URXEOHVKRRWLQJ

Use the table in this section to assist in identifying the

cause or causes of a malfunction in T-Series Climate

Changer operation. The column header

“RECOMMENDED ACTION” suggests repair

procedures.

Disconnect electrical power prior

to access into a fan or ductwork.

Even when locked out electrically,

fans may cause injury or damage if

the impeller is subject to “wind-

milling.” The impeller should be

secured to physically restrict rota-

tional movement. Failure to secure

impeller can cause severe per-

sonal injury or death.

NOTE: THIS TABLE IS INTENDED AS A DIAGNOSTIC

AID ONLY. FOR DETAILED REPAIR PROCEDURES,

CONTACT YOUR LOCAL TRANE SERVICE COMPANY.

WARNING

Disconnect electrical power

source and allow all rotating

equipment to stop completely

Table 52

T-Series Climate Changer Trouble Analysis

SYMPTOM

PROBABLE CAUSE

RECOMMENDED ACTION

First start after relubrication (Grease

distribution)

Allow machine to cool down and

restart.

Bearing is excessively hot

Over-lubrication

Over tensioned belts

No lubricant

Clean surface of grease and purge.

Adjust belt tension.

Apply lubricant. Check bearings for

damage.

Misaligned bearing

Correct alignment. Check shaft level.

Replace fuse or reset circuit breaker.

Check and reset overload.

Blown fuse or open circuit breaker

Overload trip

Motor fails to start

Improper wiring or connections

Check wiring with diagram supplied on

unit.

Improper current supply

Mechanical failure

Compare actual supply power with

motor nameplate recommendations.

Contact power company for

adjustments.

Check that motor and drive rotate

freely. Check bearing lubricant.

Open phase

Check line for an open phase.

Motor stalls

Overloaded motor

Reduce load or replace with larger

motor.

Low line voltage

Poor alignment

Check voltage across AC line. Correct

voltage if possible.

Align bearing set screws (Figure 50 ).

Loosen and retighten bearing set

screws.

Excessive vibration

Shipping spacers not removed

Remove shipping spacers and/or

bolts. See Figure 18 and Figure 19 .

Over tensioned belts

Misaligned drive

Adjust belt tension.

Align drive.

CLCH-IM-16A

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Table 52

T-Series Climate Changer Trouble Analysis

SYMPTOM

PROBABLE CAUSE

RECOMMENDED ACTION

Partial loss of line voltage

Check for loose connections.

Determine adequacy of main power

supply.

Motor runs and then dies down

Stator shorts when motor warms up

Low voltage at motor terminals

Replace stator.

Check voltage across AC line and

correct voltage loss if possible.

Motor does not come up to

speed

Line wiring to motor too small

Overloaded motor

Replace with larger sized wiring.

Reduce load or replace with a larger

motor.

Motor overheats

Motor fan is clogged with dirt

preventing proper ventilation

Remove fan cover, clean fan and

replace cover.

Motor mounting bolts loose

Rigid coupling connections

Worn motor bearings

Tighten motor mounting bolts.

Replace with flexible connections.

Replace bearings and seals.

Excessive motor noise

Fan rubbing on fan cover

Remove interference in motor fan

housing.

Excessive overhung load due to

overtensioned drive

Check belt tension and overhung load.

Replace sheave with larger one.

Adjust belt tension.

Rapid motor bearing wear

Loose fan belt

Excessive overhung load due to a

small diameter motor sheave

Motor is poorly positioned

Worn or damaged belt

Replace belt or belt set. Check sheave

alignment.

Worn sheaves

Misaligned belt

Replace sheaves.

Shorter belt life

Realign drive with MVP sheave set at

mean pitch diameter.

Grease or oil on belts

Check for leaky bearings. Clean belts

and sheaves.

Belt slipping

Belts rubbing

Adjust tension.

Remove obstruction or realign drive

for clearance.

Poor alignment

Loosen bearing set screws and realign

(See Figure 50 .)

Bearing noise

Inadequate lubrication

Air is bypassing coil

Grease bearing(s).

Prevent bypass with block-offs.

Low coil capacity

(Chilled water)

Coil tubes are blocked

Incorrect airflow

Incorrect gpm

Clean and unblock tubes.

Check fan operating conditions.

Check water pumps, valves and lines

for obstructions.

Incorrect water temperature

Air is bypassing coil

Provide proper water temperature.

Prevent bypass with block-offs.

Clean and unblock tubes.

Low coil capacity (Refrigerant)

Coil tubes are blocked

Incorrect airflow

Check fan operating conditions.

Expansion valve not operating

Check sensing bulb location and TXV

operation.

Installation and Maintenance

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Table 52

T-Series Climate Changer Trouble Analysis

SYMPTOM

PROBABLE CAUSE

RECOMMENDED ACTION

Poor refrigerant distribution

Check for blockage in distributor and

tubes.

Plugged drain line

Unit not level

Clean drain line.

Drain pan is overflowing

Level unit.

Improper trap design

Missing filters

Design trap for unit.

Replace filters.

Standing water in drain pan

Excess dirt in unit

Filter bypass

Reduce filter bypass.

See “Standing water” symptom.

Standing water in drain pan

Mold inside air handler

CLCH-IM-16A

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