background image

Page 16

BLOWER DATA

Total 

Air Volume 

cfm

Total Static Pressure - in. w.g.

0.2

0.4

0.6

0.8

1.0

1.2

1.4

RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts

1750

711

188

771

279

836

366

905

453

975

544

1044

640

1109

737

2000

752

242

812

332

876

420

944

510

1011

606

1075

709

1138

812

2250

799

300

860

389

923

479

988

575

1052

678

1113

787

1171

896

2500

853

362

914

453

976

548

1038

650

1097

761

1154

877

1209

990

2750

914

434

974

529

1033

629

1091

739

1146

858

1199

979

1250

1098

3000

980

513

1037

614

1092

720

1146

837

1198

961

1247

1088

1295

1215

3250

1048

598

1101

705

1153

819

1203

941

1251

1071

1298

1206

1343

1343

3500

1116

693

1166

809

1214

931

1261

1060

1307

1198

1351

1341

1395

1489

3750

1185

806

1232

931

1277

1063

1322

1201

1365

1348

1407

1499

1448

1657

4000

1254

937

1299

1072

1341

1214

1383

1363

1424

1518

1464

1679

1503

1844

4250

1324

1089

1366

1234

1406

1386

1445

1545

1484

1708

1522

1876

1559

2046

4500

1395

1262

1433

1417

1471

1579

1508

1745

1544

1913

1581

2084

1616

2256

4750

1465

1455

1501

1619

1536

1787

1571

1957

1606

2128

1641

2299

1675

2470

5000

1534

1666

1568

1834

1602

2004

1635

2174

1668

2345

1701

2514

1735

2682

5250

1603

1887

1635

2055

1667

2224

1699

2392

1731

2559

1763

2724

- - -

- - -

5500

1671

2110

1702

2275

1733

2441

1764

2605

- - -

- - -

- - -

- - -

- - -

- - -

5750

1738

2325

1768

2488

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

Total 

Air Volume 

cfm

Total Static Pressure - in. w.g.

1.6

1.8

2.0

2.2

2.4

2.6

RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts

1750

1172

833

1231

932

1287

1039

1340

1156

1391

1283

1442

1426

2000

1197

913

1253

1019

1306

1135

1357

1261

1407

1398

1457

1547

2250

1227

1003

1280

1117

1330

1242

1379

1378

1428

1525

1477

1680

2500

1261

1103

1311

1226

1360

1361

1407

1507

1454

1663

1501

1826

2750

1299

1219

1347

1350

1394

1494

1440

1649

1485

1813

1530

1982

3000

1342

1346

1388

1487

1432

1640

1476

1803

1520

1973

1563

2146

3250

1388

1485

1432

1638

1475

1800

1517

1969

1558

2143

1600

2319

3500

1437

1643

1479

1805

1519

1975

1560

2148

1600

2325

1640

2502

3750

1489

1821

1528

1990

1567

2164

1605

2340

1645

2517

1685

2693

4000

1541

2014

1579

2187

1616

2364

1654

2540

1693

2715

1732

2887

4250

1596

2218

1632

2393

1668

2569

1705

2742

1743

2913

- - -

- - -

4500

1652

2429

1687

2603

1722

2775

1759

2944

- - -

- - -

- - -

- - -

4750

1709

2641

1743

2811

1778

2979

- - -

- - -

- - -

- - -

- - -

- - -

5000

1768

2850

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

5250

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

5500

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

5750

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

- - -

BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY (NO HEAT SECTION) WITH DRY INDOOR COIL AND AIR 

FILTERS IN PLACE.

FOR ALL UNITS ADD:

1 − Wet indoor coil air resistance of selected unit.

 

2 − Any factory installed options air resistance (heat section, Economizer, etc.)

 

3 − Any field installed accessories air resistance (duct resistance, diffuser, etc.)

 

See page 

1

7

 for wet coil and option/accessory air resistance data.

MAXIMUM STATIC PRESSURE WITH GAS HEAT - 2.0 in. w.g.

M

INIMUM AIR VOLUME REQUIRED FOR USE WITH OPTIONAL ELECTRIC HEAT (Maximum Static Pressure - 2.0 in. w.g.)

 

092, 102 Models - 7.5 kW - 1750 cfm

All Models - 15 kW, 22.5 kW, 30 kW, 45 kW - 2750 cfm

120, 1

50

 Models - 60 kW - 3500 cfm

Summary of Contents for LCM092U

Page 1: ...Page 24 INSTALLATION INSTRUCTIONS LGM092U LCM092U LGM102U LCM102U LGM120U LCM120U LGM150U LCM150U 7 5 Ton 8 5 Ton 10 Ton 12 5 Ton PACKAGED UNITS 508116 01 1 2021 Prognostic Diagnostic Sensors Page 20...

Page 2: ...NING 24 610 5 5 8 143 6 1 8 156 6 1 8 156 6 5 8 168 28 711 27 686 20 508 AA DD EE FF BOTTOM BASE BASE CONDENSATE 101 1 4 2572 BB CC BOTTOM SUPPLY AIR OPENING 60 1 8 1527 34 7 8 886 7 178 7 178 BOTTOM...

Page 3: ...IR INDUCER IGNITION CONTROL REHEAT COIL OPTIONAL COMPRESSOR INVERTER BEHIND THE HINGED PANEL WIRELESS BOARD WIFI ANTENNA LCM092 102 120 150 PARTS ARRANGEMENT UNIT CONTROLLER EVAPORATOR COIL CONDENSER...

Page 4: ...earances WARNING Electric shock hazard and danger of explosion Can cause injury death or product or property damage Turn off gas and electrical power to unit before performing any maintenance or servi...

Page 5: ...of mounting frame NOTE Securely fasten roof frame to roof per local codes CAUTION To reduce the likelihood of supply return air by pass and promote a proper seal with the RTU duct work duct drops diff...

Page 6: ...using both holes in each corner 3 All panels must be in place for rigging 4 Place field provided H style pick in place just above top edge of unit Frame must be of adequate strength and length H styl...

Page 7: ...er access door Refer to figure 6 REMOVE THREE SCREWS PER HINGE FIGURE 6 CONDENSATE DRAIN MULLION UNITS WITH HINGED PANELS FILTER DOOR 3 Open filter access door hinges and carefully remove door 4 Remov...

Page 8: ...Replace the condensate drain mullion and reinstall eight screws 14 Reinstall filter door on hinges Connect Gas Piping Gas Units Before connecting piping check with gas company or authorities having ju...

Page 9: ...main shut off valve and union furnished by installer be installed in gas line external to unit Union must be of the ground joint type After all connections have been made check all piping connections...

Page 10: ...figure 14 This does not supersede local codes or authorities having jurisdiction Do not apply power or close disconnect switch until installation is complete Refer to start up directions Refer closely...

Page 11: ...rmostat wires are rated for maximum unit voltage they must be routed away from line voltage wiring Use wire ties located near the lower left corner of the controls mounting panel to secure thermostat...

Page 12: ...rs with overall shield Belden type 8760 or 88760 plenum or equivalent Connect both cable shield drain wires to the Unit Controller as shown in figure 18 Wire runs over 150 feet mm Use a local isolated...

Page 13: ...es do not rub against the cabinet or against other refrigerant lines 4 Check voltage at disconnect switch Voltage must be within range listed on nameplate If not consult power company and have voltage...

Page 14: ...WITH CEILING DIFFUSERS MAIN DUCT RUN FIRST BRANCH OFF OF MAIN RUN DIFFUSER ROOFTOP UNIT ROOFTOP UNIT SUPPLY AIR READING LOCATION RETURN AIR READING LOCATION RETURN AIR READING LOCATION DIRECT DRIVE B...

Page 15: ...pically 60 of full load CFM TABLE 3 DIRECT DRIVE PARAMETER SETTINGS Parameter Factory Setting Field Setting Description 092 102 120 150 Note Any changes to Smoke CFM setting must be adjusted before th...

Page 16: ...2 0 2 2 2 4 2 6 RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts 1750 1172 833 1231 932 1287 1039 1340 1156 1391 1283 1442 1426 2000 1197 913 1253 1019 1306 1135 1357 1261 1407 1398 1457 15...

Page 17: ...0 09 0 00 3000 0 09 0 11 0 12 0 13 0 13 0 03 0 02 0 06 0 10 0 02 3250 0 10 0 12 0 15 0 16 0 15 0 04 0 02 0 06 0 11 0 02 3500 0 11 0 12 0 16 0 17 0 15 0 04 0 03 0 07 0 12 0 04 3750 0 13 0 14 0 19 0 20...

Page 18: ...s unit is factory charged and should require no further adjustment If the system requires additional refrigerant reclaim the charge evacuate the system and add required nameplate charge NOTE System ch...

Page 19: ...139 300 139 855 F 349 141 341 141 955 F 399 144 390 144 1055 F 450 146 440 147 1155 F 508 149 494 150 TABLE 8 581031 01 LGM LCM120U No Reheat Outdoor Coil Entering Air Temp Circuit 1 Circuit 2 Dis ch...

Page 20: ...3275kPa 138 kPa 2 Low Pressure Switch S87 S88 The compressor circuit is protected by a loss of charge switch Switch opens at 40 psig 5 psig 276 34 kPa and automatically resets at 90 psig 5 psig 621 k...

Page 21: ...Page 21 RT47 RT42 43 SUCTION LINE TXV BULB FIGURE 23 RT46 RT42 RT43 THERMISTOR LOCATION RT42 43 46 47 EVAPORATOR COIL VIEW FROM FRONT SIDE OF UNIT...

Page 22: ...Page 22 RT44 FIGURE 24 THERMISTOR LOCATION RT44 45 VIEW FROM FRONT SIDE OF UNIT 092 102 CONDENSER COIL 120 150 CONDENSER COIL RT45 RT44 RT45 RT44 45...

Page 23: ...Page 23 RT49 RT48 THERMISTOR LOCATION RT48 49 VIEW FROM FRONT SIDE OF UNIT 092 102 CONDENSER COIL 120 150 CONDENSER COIL FIGURE 25...

Page 24: ...turn the gas control knob Never use tools If the knob will not push in or turn by hand do not try to repair it call a qualified service technician Force or attempted repair may result in a fire or ex...

Page 25: ...gas ignition sensor proves the flame and combustion continues 5 If flame is not detected after first ignition trial ignition control will repeat steps 3 and 4 two more times before locking out the gas...

Page 26: ...emand Compressors Modulate Blower Cooling Low Dampers Minimum Position Y2 Demand Compressors Modulate Blower Cooling High Dampers Minimum Position B Three Stage Thermostat 1 Economizer With Outdoor Ai...

Page 27: ...Reheat is factory set to energize when indoor relative humidity rises above 60 default The reheat setpoint can be adjusted by changing mobile service app Settings Control menu A setting of 100 will op...

Page 28: ...s Operation Reheat Only Compressor 1 Reheat Reheat Y1 Compressor 1 2 Enhanced De humidification at Low CFM Reheat Y1 Y2 Compressor 1 2 Enhanced De humidification at High CFM If there is no reheat dema...

Page 29: ...efore each heating season examine the burners for any deposits or blockage which may have occurred Clean burners as follows 1 Turn off both electrical power and gas supply to unit 2 Remove burner comp...

Page 30: ...d be examined periodically during the heating season to establish an ideal cleaning schedule With power supply disconnected the condition of the inducer wheel can be determined by looking through the...

Page 31: ...Flush coil and condensate drain with water taking care not to get insulation filters and return air ducts wet H Supply Air Blower Wheel Annually inspect supply air blower wheel for accumulated dirt or...

Page 32: ...in place 9 Close the blower access door 10 Reconnect power to the rooftop unit 11 Open the filter access door and look through the view port in the triangular sheet metal panel to verify that the UVC...

Page 33: ...Page 33 FIGURE 38 UVC ASSEMBLY UVC ASSEMBLY ASSEMBLY SECURED WITH 3 SCREWS DOOR SWITCH UVC LAMP...

Page 34: ...AGE PRESENT UVC LAMP NOT OPERATING GO TO LAMP LED TROUBLESHOOTING UVC LIGHT TROUBLESHOOTING POWER FIGURE 39 LAMPS BLACK ON ENDS BANDS AROUND LAMP INTACT CONTINUITY PRESENT LAMP LEDS NOT LIT LAMP LEDS...

Page 35: ...et SBUS Address LCONN ADDRESS TABLE 18 580683 LGM LCM 092U4E 2 Compressor Staged Direct Drive Para meter Factory Setting Field Setting Description Note Any changes to Smoke CFM setting must be adjuste...

Page 36: ...F could void warranty 86 0 F F Compressor 2 low temp lockout Settings lower than 0 F could void warranty TABLE 20 580684 LGM LCM 120U4E 2 Compressor Staged Direct Drive Para meter Factory Setting Fiel...

Page 37: ...ield CFM setting SETUP TEST BALANCE can also use SETTINGS RTU OPTIONS DAMPER 0 Damper min position during LOW blower operation 0 Damper min position during HIGH blower operation 50 Min damper for stag...

Page 38: ...igured U Power Exhaust Control 4 Not 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 Au...

Page 39: ...Installed 1 Enabled Internal Lennox 2 External A42 Phase Detection on DI 2 3 External A42 Phase Detection on DI 3 N Not Installed Y Installed 8 Load Shedding N Not Installed G Global P297 pin 9 2 Ins...

Page 40: ..._______ Cooling Checks Compressor Rotation Ambient Temp ________Return Air Temp ________ Supply Air Temp ________ Compressor Amps Compressor Volts Pressures Condenser Fan Amps CC Heater Amps L1 L2 L3...

Reviews: