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 Page 18

Page 19

BLOWER DA

TA

1.5 HP

 | 3 ROW (036, 048)

BLOWER T

ABLE INCLUDES RESIST

ANCE FOR BASE UNIT ONL

Y WITH DR

Y INDOOR COIL

 AND 

AIR FIL

TERS IN PLACE.

FOR 

ALL

 UNITS ADD:

 

1 - 

Any factory installed options air resistance (heat section, economizer

, etc.).

 

2 - 

Any field installed accessories air resistance (duct resistance, diffuser

, etc.).

Minimum 

Air V

olume Required For Different Gas Heat Sizes: 

Standard Heat - 1075 cfm; Medium Heat - 1

150 cfm; High Heat - 1500 cfm

See page 23 for wet coil and options/accessory air resistance data.

DOWNFLOW

Total

 

Air

 

cfm

Total Static Pressure - in. w

.g.

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

400

718

19

803

41

878

60

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

600

845

50

929

72

1008

92

1080

111

1149

127

1226

129

1307

126

1386

124

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

800

971

79

1057

101

1138

123

1214

143

1286

160

1362

168

1439

173

1510

181

1574

197

1630

220

1681

250

1731

279

1779

307

1000

1136

11

3

1215

135

1293

157

1367

177

1438

196

1510

209

1579

222

1642

239

1697

263

1747

293

1796

324

1844

353

1890

379

1200

1335

151

1406

172

1476

193

1544

213

161

1

232

1675

250

1735

272

1788

299

1834

332

1878

368

1923

400

1970

428

2015

454

1400

1560

177

1617

204

1675

231

1732

257

1788

283

1841

310

1891

339

1936

371

1978

405

2019

439

2063

469

2108

496

2152

522

1600

1742

245

1792

278

1842

311

1892

344

1940

376

1988

406

2035

434

2080

461

2125

486

2169

513

2213

541

2256

570

2297

601

1800

1922

330

1970

363

2017

395

2064

426

21

10

457

2155

485

2200

512

2244

539

2287

568

2328

600

2369

634

2408

671

2447

708

2000

21

12

405

2158

438

2202

471

2246

503

2289

536

2331

568

2373

602

2413

640

2452

681

2490

723

2527

766

2564

809

2599

851

2200

2305

493

2347

531

2389

569

2429

608

2469

648

2508

691

2546

737

2582

784

2619

832

2654

878

2690

923

2724

965

2758

1007

2400

2499

617

2539

660

2578

704

2615

748

2652

794

2688

841

2722

890

2757

939

2791

986

2825

1031

2858

1075

2891

111

7

2923

1158

2600

2697

773

2733

818

2769

864

2803

911

2837

957

2871

1005

2903

1052

2936

1099

2968

1143

3000

1186

3031

1228

3062

1270

3092

131

1

2800

2896

944

2929

990

2962

1036

2993

1082

3025

1128

3056

1173

3087

1216

31

18

1259

3147

1300

3177

1341

3206

1382

3236

1423

3264

1463

3000

3093

111

5

3124

1160

3154

1205

3184

1249

3214

1293

3243

1335

3272

1376

3300

1416

3327

1456

3355

1495

3383

1536

3410

1576

3437

1615

Total

 

Air cfm

Total Static Pressure - in. w

.g.

1.4

1.5

1.6

1.7

1.8

1.9

2.0

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

RPM

W

atts

800

1826

333

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

1000

1935

403

1979

424

2021

444

2064

464

2106

485

2149

509

2191

533

1200

2058

476

2100

498

2142

518

2184

541

2226

565

2267

592

2308

619

1400

2194

548

2235

574

2275

601

2316

629

2356

658

2395

689

2433

720

1600

2337

632

2377

665

2415

698

2453

733

2490

768

2527

803

2563

839

1800

2484

746

2521

785

2557

824

2592

863

2627

902

2661

942

2695

981

2000

2634

894

2668

935

2701

977

2735

1018

2768

1058

2802

1099

2834

1139

2200

2790

1049

2823

1090

2855

1130

2887

1170

2919

1210

2952

1250

2984

1289

2400

2954

1200

2986

1240

3017

1280

3048

1320

3080

1360

3111

1399

3142

1437

2600

3123

1351

3153

1391

3184

1431

3215

1470

3245

1509

3276

1548

3306

1586

2800

3294

1502

3323

1542

3352

1580

3382

1619

3412

1658

3442

1696

3472

1734

3000

3464

1653

3492

1691

3520

1729

3549

1767

3578

1805

3608

1844

3638

1882

Summary of Contents for LHT/LDT024

Page 1: ...s Page 26 INSTALLATION INSTRUCTIONS LHT LDT024 LHT LDT036 LHT LDT048 LHT LDT060 2 Ton 3 Ton 4 Ton 5 Ton HEAT PUMP AND DUAL FUEL PACKAGED UNITS 508303 01 10 2022 Cooling Operation Page 32 Gas Heat Star...

Page 2: ...TOM SUPPLY AIR OPENING TOP VIEW Base CENTER OF GRAVITY 9 1 2 241 6 5 8 168 26 1 2 673 5 5 8 143 29 737 7 178 BOTTOM RETURN AIR OPENING BOTTOM CONDENSATE OUTLET 25 3 4 654 BOTTOM POWER ENTRY 3 X 8 76 X...

Page 3: ...BLOWER COMPRESSOR CONDENSER COIL REVERSING VALVE INDOOR TXV OUTDOOR TXV UNIT CONTROLLER ELECTRIC HEAT LDT024 036 048 060 PARTS ARRANGEMENT 8 8 8 8 EVAPORATOR COIL CONDENSER FAN CONDENSATE DRAIN FILTER...

Page 4: ...Installation of Residence Type Warm Air Heating and Air conditioning Systems NFPA No 90B local municipal building codes and manufacturer s installation instructions IMPORTANT The Clean Air Act of 1990...

Page 5: ...air by pass and promote a proper seal with the RTU duct work duct drops diffuser assemblies must be supported independently to the building structure A Downflow Discharge Application Roof Mounting wit...

Page 6: ...ght with all available factory installed accessories 378 400 Unit Weight Lbs Kg CAUTION Do not walk on unit 833 881 Horizontal Air Discharge Unit is shipped with panels covering the horizontal supply...

Page 7: ...mm per 10 3 m of line MOUNTING FRAME OPEN VENT CONDENSATE SIDE DRAIN CONNECTION NOTE Allow clearance to open doors when installing condensate piping CAULK AROUND CONDENSATE COUPLING FIGURE 6 UNIT Min...

Page 8: ...Replace the condensate drain mullion Connect Gas Piping Gas Units Before connecting field provided piping check with gas company or authorities having jurisdiction for local code requirements When ins...

Page 9: ...ound joint type After all connections have been made check all piping connections for gas leaks Also check existing unit gas connections up to the gas valve loosening may occur during installation Use...

Page 10: ...refer to the Unit Controller Setup Guide for start up instructions Electrical Connections Power Supply Do not apply power or close disconnect switch until installation is complete Refer to start up di...

Page 11: ...up Guide to change the System Mode Use the mobile service app menu and select Settings Install Thermostat Mode 1 Route thermostat cable or wires from subbase to control area above compressor refer to...

Page 12: ...r air temperature falls below setpoint the unit will operate in gas heat mode Note Only stage one is used stage 2 is not used Although the recommended balance point setpoint is 35 F the setpoint can b...

Page 13: ...ately stop when power is interrupted to the Unit Controller Disconnect unit power before opening the blower compartment The Controller s digital inputs must be used to shut down the blower See Unit Co...

Page 14: ...ATION CFM This is the percentage of torque for high static blower ventilation speed TABLE 3 ELECTRIC HEAT MINIMUM AIRFLOW kW CFM Direct Drive Direct Drive Impeller Style 5 600 NA 7 5 600 1200 10 600 N...

Page 15: ...eed for standard static blowers BLOWER VENTILATION CFM Percentage of torque for high static blower ventilation speed SETUP TEST BALANCE DAMPER BLOWER HIGH CFM DAMPER POS Minimum damper position for hi...

Page 16: ...498 1142 1 0 617 214 1102 806 269 1116 994 324 1130 1125 376 1144 1255 428 1157 1406 510 1184 1 1 561 219 1145 751 276 1157 941 332 1169 1071 384 1183 1200 436 1196 1347 518 1225 1 2 500 221 1185 691...

Page 17: ...5 1109 1766 747 1135 1920 859 1161 2104 1038 1200 1 1 1148 434 1087 1366 545 1115 1583 655 1142 1734 765 1166 1885 874 1189 2060 1047 1227 1 2 1120 456 1124 1334 564 1149 1548 671 1173 1695 777 1195 1...

Page 18: ...58 752 1143 1911 864 1169 2090 1042 1209 1 1 1144 437 1092 1360 548 1120 1576 659 1148 1725 769 1173 1874 878 1197 2043 1049 1236 1 2 1115 458 1129 1328 566 1154 1540 674 1179 1685 780 1202 1829 886 1...

Page 19: ...0 2369 634 2408 671 2447 708 2000 2112 405 2158 438 2202 471 2246 503 2289 536 2331 568 2373 602 2413 640 2452 681 2490 723 2527 766 2564 809 2599 851 2200 2305 493 2347 531 2389 569 2429 608 2469 648...

Page 20: ...469 2110 496 2153 520 1600 1778 258 1827 290 1876 323 1923 355 1970 386 2015 416 2059 444 2102 470 2144 494 2185 519 2227 545 2268 572 2309 600 1800 1973 352 2018 383 2063 415 2107 445 2151 476 2194...

Page 21: ...78 650 2418 682 2458 714 2000 2127 415 2172 448 2217 481 2260 513 2303 546 2345 579 2385 614 2425 653 2464 693 2503 734 2541 774 2578 814 2614 855 2200 2321 507 2363 545 2404 583 2444 623 2484 664 252...

Page 22: ...692 2484 727 2000 2202 451 2242 482 2283 513 2323 545 2363 577 2402 611 2440 646 2477 683 2512 722 2546 763 2579 804 2613 844 2645 884 2200 2408 559 2446 596 2483 633 2520 672 2555 712 2590 753 2623...

Page 23: ...0 04 0 07 0 18 0 05 0 05 0 08 0 11 2400 0 13 0 04 0 05 0 08 0 20 0 05 0 05 0 08 0 12 Page 23 BLOWER DATA POWER EXHAUST FAN PERFORMANCE Return Air System Static Pressure in w g Air Volume Exhausted cfm...

Page 24: ...rvice app menu path RTU MENU COMPONENT TEST COOLING COOLING STAGE 2 2 Units contain one refrigerant circuit Note Units are equipped with two stage compressors 3 Unit is charged with R 410A refrigerant...

Page 25: ...uid temperature at condenser outlet minus ambient temperature 2 Approach temperature should be 3 8 F 1 2 1 C 0 5 An approach temperature greater than this value indicates an under charge An approach t...

Page 26: ...and apply power to unit Defrost Control The defrost control ensures that the heat pump outdoor coil does not ice excessively during the heating mode The defrost control uses input from the coil and am...

Page 27: ...Page 27 LHT LDT024 036 048 060 FIGURE 18 YELLOW RT46 CLAMP THERMISTOR TO BARE COPPER DETAILS NOT TO SCALE 22J06 LHT LDT024 036 048 INDOOR COIL RT46...

Page 28: ...Page 28 LHT LDT024 036 048 060 FIGURE 19 YELLOW RT48 22J08 LHT LDT024 036 OUTDOOR COIL RT48...

Page 29: ...Page 29 LHT LDT024 036 048 060 FIGURE 20 LHT LDT048 OUTDOOR COIL RT48 CLAMP THERMISTOR TO BARE COPPER DETAILS NOT TO SCALE YELLOW RT48 22J08...

Page 30: ...Page 30 LHT LDT024 036 048 060 FIGURE 21 YELLOW RT46 CLAMP THERMISTOR TO BARE COPPER DETAILS NOT TO SCALE LHT LDT060 INDOOR COIL RT46 22J06...

Page 31: ...Page 31 LHT LDT024 036 048 060 FIGURE 22 CLAMP THERMISTOR TO BARE COPPER DETAILS NOT TO SCALE LHT LDT060 OUTDOOR COIL RT48 YELLOW RT48 22J08...

Page 32: ...Blower Low Dampers Modulate Y2 Demand Compressor On 024 units only Compressor Low 036 060 Blower High Dampers Full Open Note Compressor is energized after damper has been at full open for three minut...

Page 33: ...Gas heat is also energized during the defrost cycle 2 Outdoor Temperature BELOW Balance Point Setpoint W1 Demand Compressor Off Blower Heating Speed Low Gas Heat Energized W2 Demand Compressor Off Blo...

Page 34: ...y to repair it Call a qualified service technician Force or attempted repair may result in a fire or explosion WARNING Danger of explosion Can cause injury or death Do not attempt to light manually Un...

Page 35: ...shes Ignition lockout from too many trials 4 Flashes Ignition lockout from too many flame losses within single call for heat 5 Flashes Control hardware fault detected C Limit Controls Limit controls a...

Page 36: ...ilter frame when reinstalling filters See figure 24 NOTE Filters must be U L C certified or equivalent for use in Canada B Lubrication All motors are lubricated at the factory No further lubrication i...

Page 37: ...ENTATION One and Two Stage Heat 150 000 BTUH 7 BURNERS 108 000 BTUH 5 BURNERS 65 000 BTUH 3 BURNERS SENSOR IGNITOR SENSOR IGNITOR SENSOR IGNITOR Clean combustion air inducer as follows 1 Shut off powe...

Page 38: ...ly during the cooling season Condenser coils are made of single and two formed slabs On units with two slabs dirt and debris may become trapped between the slabs To clean between slabs carefully separ...

Page 39: ...et See figure 30 Retain the screw to secure the back side of the ionizer bracket 2 Remove two screws securing the front side of the ionizer bracket and pull out of unit and clean brushes 3 Replace ion...

Page 40: ...blower access door 6 Allow 10 minutes before touching the lamps Then carefully remove the old lamp from the lamp holder clips 7 Wear cotton gloves or use a cotton cloth when handling the new lamp Plac...

Page 41: ...t office for proper disposal Do not use a vacuum cleaner Do not incinerate Maintenance For all maintenance contact a qualified HVAC technician Read the maintenance instructions before opening unit pan...

Page 42: ...I D must change To configure the option use MAIN MENU SETUP INSTALL menu path Press SAVE until CONFIGURATION ID 1 or 2 appears depending on the option installed Change the appropriate character in the...

Page 43: ...t Installed N Damper Position A A34 Pressure Sensor C 5 Network Module N Not Installed L LonTalk Lennox 6 Blower Variable Frequency Drive Bypass N Not Installed A Automatic Bypass M Manual Bypass U Un...

Page 44: ...lled 1 Air Flow Proving Switch S52 3 Overflow Switch S149 S179 4 Reserved Reserved for future use N 7 Zone Bypass Damper N Not Installed Y Installed FIGURE 36 10 Reserved N Not Installed Not Installed...

Page 45: ...voltage __________ Cooling Checks Compressor Rotation Ambient Temp ________Return Air Temp ________ Supply Air Temp ________ Compressor Amps Compressor Volts Pressures Condenser Fan Amps CC Heater Am...

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