background image

18 

Table 7-9 Refrigerant charge for A/C system 

Table 7-11 Refrigerant charge for H/P system 

Table 7-10 Refrigerant charge for H/P system 

55 60 65 70 75 80 85 90 95 100 105 110 115 

165 
161 
157 
153 
149 
145 
141 
137 
133 
129 
125 
121 
117 
113 
109 
105 

Mode 

De Refroidissement 

High Pressure Detected Valve(psig)/Vanne Détecté de Pression Haute(en psig) 

Low Pressure Detected Valve(psig) 

Vanne Détectée de Pression Basse(en psig) 

MRB-48CWN1-M13L 

Cooling Charge Chart/Tableau De Charge de Refroidissement 

Cooling Mode 

Outdoor Ambient Temperature(

o

F)/Temperature Amdiante Exterieure(en 

o

F) 

55 60 65 70 75 80 85 90 95 100 105 110 115 

165 
161 
157 
153 
149 
145 
141 
137 
133 
129 
125 
121 
117 
113 
109 
105 

Mode 

De Refroidissement 

High Pressure Detected Valve(psig)/Vanne Détecté de Pression Haute(en psig) 

Low Pressure Detected Valve(psig) 

Vanne Détectée de Pression Basse(en psig) 

MRB-48HWN1-M13L 

Cooling Charge Chart/Tableau De Charge de Refroidissement 

Cooling Mode 

Outdoor Ambient Temperature(

o

F)/Temperature Amdiante Exterieure(en 

o

F) 

60 62 64 66 68 70 72 74 76 78 80 82 

135 
128 
121 
114 
107 
100 

93 
86 
79 
72 
65 
58 
51 
44 
37 
30 

Mode 

De Chauffage 

High Pressure Detected Valve(psig)/Vanne Détecté de Pression Haute(en psig) 

Low Pressure Detected Valve(psig) 

Vanne Détectée de Pression Basse(en psig) 

MRB-48HWN1-M13L 

Heating Charge Chart/Tableau De Charge de Chauffage 

Heating Mode 

Indoor Dry Bulb Temperature(

o

F)/Temperature Interieur au Themometre sec(en 

o

F) 

284

307

329

352

372

392

412

439

467

494

521

282

305

327

350

370

390

410

437

464

491

518

280

303

325

348

368

388

408

435

462

489

516

255

278

301

323

346

366

386

406

433

460

487

514

253

276

299

321

344

364

384

404

431

458

485

512

251

274

297

319

342

362

382

402

429

456

483

510

227

249

272

295

317

340

358

376

394

423

451

480

508

225

247

270

293

315

338

358

378

398

425

452

479

506

223

245

268

291

313

336

356

376

396

423

450

477

504

221

243

266

289

311

334

354

374

394

421

448

475

502

219

241

264

287

309

332

352

372

392

419

446

473

500

217

239

262

285

307

330

350

370

390

417

444

471

498

215

237

260

283

305

328

348

368

388

415

442

469

496

211

234

257

280

303

326

346

366

386

413

440

467

494

209

232

255

278

301

324

344

364

384

411

438

465

492

207

230

253

276

299

322

342

362

382

409

436

463

490

282

305

329

352

372

392

412

437

461

486

510

280

303

327

350

370

390

410

435

459

484

508

278

301

325

348

368

388

408

433

457

482

506

253

276

299

323

346

366

386

406

431

455

480

504

251

274

297

321

344

364

384

404

429

453

478

502

249

272

295

319

342

362

382

402

427

451

476

500

223

247

270

293

317

340

358

376

394

420

446

472

498

221

245

268

291

315

338

357

377

396

421

446

471

496

219

243

266

289

313

336

355

375

394

419

444

469

494

219

241

264

287

309

332

352

372

392

417

442

467

492

217

239

262

285

307

330

350

370

390

415

440

465

490

215

237

260

283

305

328

348

368

388

413

438

463

488

213

235

258

281

303

326

346

366

386

411

436

461

486

211

233

256

279

301

324

344

364

384

409

434

459

484

209

231

254

277

299

322

342

362

382

407

432

457

482

207

229

252

275

297

320

340

360

380

405

430

455

480

333

340

348

353

361

368

375

381

388

394

400

408

324

332

339

347

353

360

367

372

379

385

393

401

313

323

329

336

348

353

359

366

371

378

384

395

306

314

322

330

338

347

352

359

363

370

377

386

295

305

313

321

331

339

345

353

358

364

371

378

286

294

304

312

323

332

338

345

351

357

363

370

277

285

293

302

315

325

329

337

344

350

358

362

267

276

285

291

304

312

319

328

338

342

349

356

258

265

271

281

295

303

308

316

323

333

341

347

243

253

260

270

283

294

301

309

317

325

332

340

231

241

247

255

269

281

288

295

310

317

326

333

254

268

275

282

297

308

317

325

255

263

273

283

299

308

316

255

264

274

289

297

307

254

265

276

288

298

Summary of Contents for MRC-24CWN1-M13L

Page 1: ...e attempting installation or operation Failure to follow these instructions may result in improper installation adjustment service or maintenance possibly resulting in fire electrical shock property d...

Page 2: ...TABLE OF CONTENTS LIST OF TABLES LIST OF FIGURES...

Page 3: ...e use of unauthorized components accessories or devices may adversely affect the operation of the heat pump and may also endanger life and property The manufacturer disclaimer any responsibility for s...

Page 4: ...ransportation damage 1 1 INSPECTION Refer to Fig 2 2 2 3 for unit physical data and to Table 6 1 6 2 for electrical data If components are to be added to a unit they must meet local codes they are to...

Page 5: ...AUTION Before lifting make sure the unit weight is distributed equally on the rigging cables so it will lift evenly Units may be moved or lifted with a forklift Slotted openings in the base rails are...

Page 6: ...Unit Dimensions Low vlotage entrance 7 8 Dia High voltage conn 1 23 64 Dia Unit size 024 036 The above figure for reference purpose only Hi Lo pressure detected valve 1 4 SAE Side supply air opening S...

Page 7: ...stalled outdoors Over hanging structure or shrubs should not obscure condenser air discharge outlet 2 The minimum clearance without economizer fresh air damper For distance with Economizer fresh air d...

Page 8: ...ventilation air intake Flexible joints may be used in the supply and return duct work to minimize the transmission of noise When fastening duct work to the side duct flanges on the unit insert the sc...

Page 9: ...devices may be either fuses or HACR type circuit breakers Two 1 3 8 knockouts on the back panel are provided for connection of power wiring to electric heater Power wiring is connected to the power te...

Page 10: ...mpartment 6 3 CONTROL WIRING IMPORTANT Class 2 low voltage control wiring SHOULD NOT be run in conduit with main power wiring and must be separated from power wiring unless class 1 wire of proper volt...

Page 11: ...connect Field supplied disconnect Single phase power supply Fig 6 2 Typical Field Power Wiring Diagram R G Y W C R G Y W1 W2 C 24 volt transformer THERMOSTAT UNIT CONTROL BOARD THERMINAL STRIP B wire...

Page 12: ...ic Heat Option Max Fuse2 Breaker3 Size Amps Compressors each 18 7A 0 95A 2 84A 060L 5 0 208 230 1 60 21 5A Volt Size Tons MCA1 Amps 036L 3 0 208 230 1 60 14 0A 70A 024T 2 0 208 230 1 60 9 7A 34 8A 15...

Page 13: ...17 17 17 17 Tube diameter inch 9 32 9 32 9 32 9 32 9 32 9 32 Circuitry type interlaced interlaced interlaced interlaced interlaced interlaced Refrigerant control Orifice Orifice Orifice Orifice Orifi...

Page 14: ...76 360 343 326 1 88 1 81 1 73 1 66 1 58 1251 590 1206 569 1148 541 1080 509 989 466 869 910 949 983 1017 436 416 392 368 340 2 11 2 01 1 91 1 8 1 68 1345 634 1272 600 1192 562 1107 522 980 462 965 995...

Page 15: ...17 CFM L S RPM Watts Amps CFM L S RPM Watts Amps CFM L S RPM Watts Amps CFM L S RPM Watts Amps CFM L S RPM Watts Amps CFM L S RPM Watts Amps CFM L S RPM Watts Amps CFM L S RPM Watts Amps CFM L S RPM...

Page 16: ...53 370 388 414 441 467 493 228 249 270 291 312 333 351 368 386 412 439 465 491 226 247 268 289 310 331 349 366 384 410 437 463 489 224 245 266 287 308 329 347 364 382 408 435 461 487 222 243 264 285 3...

Page 17: ...60 386 411 442 473 504 535 236 256 275 294 314 333 358 384 409 440 471 502 533 234 254 273 292 312 331 356 382 407 438 469 500 531 232 252 271 290 310 329 354 380 405 436 467 498 529 230 250 269 288 3...

Page 18: ...358 376 394 423 451 480 508 225 247 270 293 315 338 358 378 398 425 452 479 506 223 245 268 291 313 336 356 376 396 423 450 477 504 221 243 266 289 311 334 354 374 394 421 448 475 502 219 241 264 287...

Page 19: ...21 342 363 384 405 438 470 503 535 233 254 276 298 319 341 360 379 398 432 466 499 533 231 252 274 296 317 339 358 377 396 430 464 497 531 229 251 272 294 315 337 356 375 394 428 462 495 529 227 249 2...

Page 20: ...onditions If the outdoor ambient temp is 37 4 F and the compressor stopped for more than three hours or the unit powered on once more the crank heater will be on Crankcase heater shut down conditions...

Page 21: ...and T3 is 32 F and last for 40 minutes 2 Compressor keeps running when T4 is 28 4 F and T3 is 32 F and last for 50 minutes When defrosting actions if the electrical heater kit is installed the unit wo...

Page 22: ...and outdoor fan instant OFF Blower fan delay 90 sec OFF 4 way valve instant ON Blower instant ON Compressor and outdoor fan instant ON Compressor and outdoor fan instant OFF Blower fan delay 90 sec O...

Page 23: ...run 4 Turn fan switch to AUTO system switch to COOL and thermostat tem perature setting below room temperature Unit should run in COOLING mode Heating Startup After normal cooling run 1 Turn thermosta...

Page 24: ...24 AC System W iring Diagram GMCC LG compressor 1 2 3 4 6 5 1 2 0...

Page 25: ...25 HP System W iring Diagram GMCC LG compressor 1 2 3 4 6 5 1 2 0 3...

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