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2

ROUGH-IN-DIMENSIONS

FRONT VIEW

TOP VIEW

BACK VIEW

       TANK

APPROX

U.S Gallons/Hr. and Litres/Hr at TEMPERATURE RISE INDICATED

        CAPACITY

EFF.

36F°

40F°

50F°

54F°

60F°

70F° 72F° 80F° 90F° 100F° 108F° 110F° 120F° 126F° 130F° 140F°

  Model

Btuh

KW U.S.Gal. Litres

%

20C° 22C°

28C° 30C° 33C° 39C° 40C° 44C° 50C° 56C° 60C° 61C° 67C° 70C° 72C°

78C°

BTN-120 120,000

71

80

GPH

320

288

239

213

192

164

160

144

128

115

107

105

96

91

89

82

35

269

LPH 1210

1089

871

807

726

622

605

545

484

436

403

396

363

346

335

311

BTN-154 154,000

81

80

GPH

410

369

295

274

246

211

205

185

184

148

137

134

123

117

114

106

45

307

LPH 1553

1398

1118

1036

932

79

777

699

621

559

518

508

466

444

430

399

BTN-180 180,000

100

80

GPH

480

432

345

320

288

247

240

218

192

173

160

157

144

137

133

123

53

307

LPH 1815

1634

1307

1210

1089

934

908

817

726

654

805

594

545

519

503

487

BTN-199 199,000

100

80

GPH

530

477

382

353

318

273

265

239

212

191

177

174

159

151

147

136

58

307

LPH 2007

1806

1445

1338

1204

1032 1004

903

803

723

669

657

602

573

556

516

BTN-200 199,000

100

80

GPH

530

477

382

353

318

273

265

239

212

191

177

174

159

151

147

136

58

379

LPH 2007

1806

1445

1338

1204

1032 1004

903

803

723

669

657

602

573

556

516

BTN-250 250,000

100

80

GPH

866

600

480

444

400

343

333

300

266

240

222

218

200

190

184

171

73

379

LPH 2522

2269

1815

1881

1513

1297 1261 1135 1009

908

841

825

756

720

698

648

BTN-275 275,000

100

80

GPH

733

659

528

488

440

377

366

330

293

264

244

240

220

209

203

188

81

379

LPH 2774

2496

1997

1849

1664

1426 1387 1248 1109

999

925

908

832

792

768

713

BTN-310 310,000

85

80

GPH

826

743

595

551

496

425

413

372

330

297

275

270

248

236

229

212

91

322

LPH 3127

2814

2251

2084

1876

1808 1563 1407 1251

1126 1042

1023

938

893

866

804

BTN-366 366,000

85

80

GPH

975

878

702

650

585

502

488

439

390

351

325

319

293

279

270

251

107

322

LPH 3692

3322

2658

2461

2215

1898 1846 1661 1477

1329 1231

1208

1107

1055

1022

949

BTN-400 390,000

85

80

GPH 1039

935

748

693

624

534

520

468

416

374

346

340

312

297

288

267

114

322

LPH 3934

3540

2832

2622

2360

2023 1967 1770 1573

1416 1311

1287

1180

1124

1089

1011

TABLE 2. RECOVERY CAPACITIES, based on 80% efficiency

Manifold Pressure

Model

Type of Gas

Inches vs. W.C.

kPa

Volts/Hz

Amperes

BTN 120-400

Natrual

3.5

0.87

120/60

< 5

F

TOP

OUTLET

1 1/2” NPT

TOP

INLET

1 1/2” NPT

TABLE 3. GAS AND ELECTRICAL CHARACTERISTICS

TABLE 1. ROUGH-IN-DIMENSIONS

Model

BTN-120

BTN-154

BTN-180

BTN-199

BTN-200

BTN-250

BTN-275

BTN-310

BTN-366

BTN-400

Dim.

Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm

Inches mm

A

63

1800

68

1727

72

1829

72

1829

72

1829

72

1829

72

1829

73

1854

73

1854

73

1854

B

4 1/4

108

4 1/2

114

4 1/2

114

4 1/2

114

4 1/2

114

4 1/2

114

4 1/2

114

4 1/2

114

4 1/2

114

4 1/2

114

C

59 1/2 1511

62

1575

70

1778

70

1778

70

1778

70

1778

70

1778

72

1829

72

1829

72

1829

D

50 7/8 1292 53 5/8 1362 61 5/8 1565 61 5/8 1565 61 5/8 1565 61 5/8 1565 61 5/8 1565 62 1/2 1588 62 1/2 1588

62 1/2 1588

E

19 11/16 500

20 1/2 521

20 1/2

521 20 1/2

521 20 1/2 521

20 1/2

521

20 1/2 521

20 1/2 521

22 1/2 572

22 1/2

572

F

19

483

21

533

21

533

21

533

21

533

21

533

21

533

21

533

21

533

21

533

G

        1/2NPT           1/2NPT          1/2NPT          1/2NPT           1/2NPT

  1/2NPT

1/2NPT

         1/2NPT          1/2NPT              1/2NPT

(gas inlet)

H

51 7/8 1318 54 5/8 1387

61

1549

61

1549

61

1549

61

1549

61

1549

63

1600

63

1600

63

1600

I

5

127

6

152

6

152

6

152

6

152

6

152

6

152

6

152

6

152

6

152

(vent dia)

J

27 3/4 705

27 3/4 705

27 3/4

705 27 3/4

705 27 3/4 705

27 3/4

705

27 3/4 705

27 3/4 705

27 3/4 705

27 3/4

705

K          1 1/2NPT        1 1/2NPT          2NPT

         2NPT

           2NPT             2NPT              2NPT         1 1/2NPT         1 1/2NPT           1 1/2NPT

L          1 1/2NPT        1 1/2NPT          2NPT

         2NPT

           2NPT              2 NPT              2NPT          2 NPT           1 1/2NPT           1 1/2NPT

Appox.

Shipping

400

181

470

213

603

274

603

274

603

274

603

274

603

274

725

329

725

329

725

329

Weight

lbs.

K.g

lbs.

K.g

lbs.

K.g

lbs.

K.g

lbs.

K.g

lbs.

K.g

lbs.

K.g

lbs.

K.g

lbs.

K.g

lbs.

K.g

STD.

Approx.

Shipping

-

-

-

-

-

-

-

-

686

311

686

311

686

211

833

378

833

378

833

378

Weight

lbs.

Kg.

lbs.

Kg.

lbs.

Kg.

lbs.

Kg.

lbs.

Kg.

lbs.

Kg.

ASME

Summary of Contents for BTN 120 THRU 400/A Series

Page 1: ...RENCE Printed in U S A 0603 PART NO 195714 000 ADIVISION OFA O SMITH CORPORATION McBEE SOUTH CAROLINA USA www hotwater com CAUTION TEXT PRINTED OR OUTLINED IN RED CONTAINS INFORMATION RELATIVE TO YOUR...

Page 2: ...1107 1055 1022 949 BTN 400 390 000 85 80 GPH 1039 935 748 693 624 534 520 468 416 374 346 340 312 297 288 267 114 322 LPH 3934 3540 2832 2622 2360 2023 1967 1770 1573 1416 1311 1287 1180 1124 1089 101...

Page 3: ...ing Aids 30 Sequence of Operation Flow Chart 30 Operational Checklist 31 Limited Warranty 32 Page Page FOREWORD These designs comply with ANSI Z21 10 3 as an automatic circulating or automatic storage...

Page 4: ...nstallation and periodically thereafter to ensure a down draft condition does not exist DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND VENTILATING AIR ADEQUATE AIR FOR COMBUSTION AND VENTILATION MUST BE P...

Page 5: ...of the heater adjustment to the gas pressure regulator may be required See CHECKING THE INPUT section in this manual for inlet and manifold pressure requirements Also due to the input rating reductio...

Page 6: ...N SERIOUS PERSONAL INJURY OR DEATH UNCRATING The heater is shipped with the inducer already installed The wiring conduit runs from the thermostat to the inducer Before turning unit on check to make su...

Page 7: ...5 BTN 250 A 2 51mm 2 51mm 2 51mm 12 305 BTN 275 A 2 51mm 2 51mm 2 51mm 12 305 BTN 310 A 3 76mm 3 76mm 3 76mm 12 305 BTN 366 A 6 152mm 6 152mm 6 152mm 12 305 BTN 400 A 3 76mm 3 76mm 3 76mm 12 305 TABLE...

Page 8: ...ommunicating with the outdoors through vertical ducts two permanent openings located in the above manner shall be provided Each opening shall have a free area of not less than one square inch per 4000...

Page 9: ...r Inches 154 000 1 Ft 6 6 6 6 6 6 6 6 154 000 2 Ft 6 6 6 6 6 6 6 6 154 000 3 Ft 6 6 6 6 6 6 6 6 Number of Combined Input BTN 154 Heaters in Thousands of Btu hr Manifold and Common Vent Diameter Inches...

Page 10: ...0 Input 310 000 Btu hr Total Vent Height Feet Vent Connector Size 6 inches 6 8 10 15 20 30 50 100 Input Btu hr Rise Vent Connector Diameter Inches 310 000 1 Ft 9 8 8 8 7 7 6 6 310 000 2 Ft 8 8 8 7 7 7...

Page 11: ...may be required in the inlet supply line between the appliance and the meter or valve to compensate for the thermal expansion of the water SYSTEMCONNECTIONS The system installation must conform to th...

Page 12: ...ATURE CONTROL WARNING ON PAGE 25 IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTER OUTPUT ADD AN ANTI SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES GENERAL The type size and loc...

Page 13: ...OULD NOT EXCEED SAFE USE TEMPERATUREAT FIXTURES SEE WATERTEMPERATURE CONTROL WARNING ON PAGE 25 IF HIGHER PREHEAT TEMPERATURES ARE NECESSARYTO OBTAINADEQUATE BOOSTER OUTPUT ADDANANTI SCALD VALVE FOR H...

Page 14: ...OGGLESWITCHMUSTBECLOSED ON DURING THERINSEOPERATIONANDOPEN OFF WHENDISHWASHER IS NOTOPERATING OR WHEN ON LONG STANDBY NOTE 2 INSTALLLINETEMPERATURECONTROLINANUNINSULATED TEEBEYONDTHEDISHWASHINGMACHINE...

Page 15: ...ns shown in the installation diagrams on the following pages are typical TWO TEMPERATURE TWO HEATERS ONE PRE HEATER ONE BOOSTER HEATER WITH OR WITHOUT BUILDING RECIRCULATION The discharge opening of t...

Page 16: ...NOTE 3 ADJUST PLUG COCK SO THE SANITIZING LOOP FLOW RATE DOES NOT CAUSE UNNECESSARYTURBULENCEINTHETANK PIPE RELIEF VALVE TO OPEN DRAIN INSTALL IN ACCORDANCE WITH LOCAL CODES CIRCULATING RETURN LINE C...

Page 17: ...ERS WITH MIXING VALVE TWO PRE HEATERS WITH BOOSTER HEATER DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE AT FIXTURES SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 25 IF HIGHER PREHE...

Page 18: ...ER OUTPUT ADD AN ANTI SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES PIPE RELIEF VALVE TO OPEN DRAIN WHEN USING AN A O SMITH T 140 200 350 OR 400 STORAGE TANK USE LOWER 3 4 OPENING FOR TANK TEMPERATUR...

Page 19: ...N 154 68 BTN 180 72 BTN 199 72 BTN 200 A 72 BTN 250 A 72 BTN 275 A 72 BTN 310 A 73 BTN 366 A 73 BTN 400 A 73 MANIFOLD KITS TWO UNIT MANIFOLD KIT PART NO 78692 THREE UNIT MANIFOLD KIT PART NO 78593 FOU...

Page 20: ...diction AN ELECTRICAL GROUND IS REQUIRED TO REDUCE RISK OF ELECTRICAL SHOCK OR POSSIBLE ELECTROCUTION If any of the original wire as supplied with the appliance must be replaced use only type 1050 C t...

Page 21: ...BEFOREATTACHING THE GAS LINE BE SURE THATALL GAS PIPE IS CLEAN ON THE INSIDE TO TRAP ANY DIRT OR FOREIGN MATERIAL IN THE GAS SUPPLY LINE A DIRT LEG SOMETIMES CALLED SEDIMENT TRAP OR DRIPLEG MUST BE IN...

Page 22: ...OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO SHUT OFF TURN OFF THE MANUALGAS CONTROLVALVE TO THE APPLIANCE CAUTION Before proceeding with the operation of the unit make sure the water heater and system...

Page 23: ...d then shuts off power to the Silicon Nitride Ignitor 11 From the time the Silicon Nitride Ignitor s power is shut off the Ignition Control Board waits 3 more seconds to monitor the Flame Sensor 12 If...

Page 24: ...ny gas If you then smell gas STOP Follow B in the safety information above on this label If you don t smell gas go on to the next step 7 Turn gas control knob counterclockwise to ON 8 Turn on all elec...

Page 25: ...ed on the lowest setting which produces an acceptable hot water supply This will always give the most energy efficient operation The temperature control has a 4F fixed differential CHECKING VENTING Th...

Page 26: ...valve should be installed in place of the defective one FIGURE13 CHECKING THE INPUT For appliance installation locations with elevations above 2000 feet refer to HIGH ALTITUDE INSTALLATIONS section of...

Page 27: ...APPLIANCE HOT WATER ODOR On occasion hot water may develop a strong odor If this occurs drain the heater completely flush thoroughly and refill If the problem persists chlorination of the heater and r...

Page 28: ...hy When and How booklet Form No 4800 Then install the long plastic male adapter fitting into the drain valve opening of the water heater Use teflon tape and hand tighten only Do not overtighten Prepar...

Page 29: ...g Check that main manual gas shutoff valve is fully open and that gas service has not been interrupted Check that after following the appliance OPERATING INSTRUCTIONS the Top Knob of the appliance gas...

Page 30: ...ription of this flow chart can be found in the SEQUENCE OF OPERATION section found on page 23 Switch power on to unit Thermostat calls for heat Ignition Control Board performs diagnostic check on comp...

Page 31: ...Replace dual bulb controller if differential is too wide greater than 4 F Heater recovery is slower Call serviceman Check gas input If incorrect adjust gas pressure or replace main burner orifice Draf...

Page 32: ...tive method of controlling thermal expansion is also installed at the heater s and operational at all times The relief valve installed on the heater is not an acceptable method 4 SERVICEANDREPAIREXPEN...

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