Specifications

For Technical Information and Automated Fax Service, call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
Commercial Gas Water Heaters
Revised August 2009 Page 3 of 4
www.hotwater.com AOSCG10300
CAPACITY, INPUT AND OUTPUT
MODEL
NUMBER
BTU
INPUT
PER
HOUR
GALLONS OR
LITRES
TANK
SIZE
GPH OR
LPH
RECOVERY - GALLONS OR LITRES
PER HOUR AT DEGREE RISE
40°F 100°F 140°F
22°C 56°C 78°C
BTR-120 120,000
U.S. Gallons 71 GPH 291 116 83
Litres 268 LPH 1102 439 314
BTR-154 154,000
U.S. Gallons 81 GPH 373 149 107
Litres 307 LPH 1412 564 405
BTR-180 180,000
U.S. Gallons 81 GPH 434 175 124
Litres 307 LPH 1643 659 469
BTR-197 199,000
U.S. Gallons 100 GPH 482 193 138
Litres 379 LPH 1825 731 522
BTR-198 199,000
U.S. Gallons 100 GPH 482 193 132
Litres 379 LPH 1825 731 500
BTR-199 199,000
U.S. Gallons 81 GPH 482 193 132
Litres 307 LPH 1825 731 500
BTR-200 (A) 199,000
U.S. Gallons 100 GPH 482 193 132
Litres 379 LPH 1825 731 500
BTR-250 (A) 250,000
U.S. Gallons 100 GPH 606 242 173
Litres 379 LPH 2294 918 655
BTR-251 (A) 251,000
U.S. Gallons 65 GPH 608 243 174
Litres 246 LPH 2303 921 658
BTR-275 (A) 275,000
U.S. Gallons 100 GPH 667 267 190
Litres 379 LPH 2524 1009 721
BTR-305 (A) 305,000
U.S. Gallons 65 GPH 739 296 211
Litres 246 LPH 2799 1120 800
BTR-365 (A) 365,000
U.S. Gallons 85 GPH 885 354 253
Litres 322 LPH 3349 1340 957
BTR-400 (A) 390,000
U.S. Gallons 100 GPH 945 378 270
Litres 379 LPH 3576.8 1430.7 1022
BTR-500 (A) 500,000
U.S. Gallons 85 GPH 1212 485 346
Litres 322 LPH 4588 1835 1311
A
C
H
E
BG
F
J
D
I
OUTLET
INLET
1˝ CLEARANCE
GAS CONNECTION
1˝ NPT
RELIEF
VALVE
OPENING
TOP
OUTLET
TOP
INLET
Maximum gas supply pressure (natural and propane gas): 14˝w.c.
Minimum gas supply pressure, natural gas: 4.5˝ w.c. Minimum gas supply pressure, propane gas: 11˝w.c.
Manifold pressure, natural gas: 3.5˝ w.c. Manifold pressure, propane gas: 10˝w.c.
Electrical requirements: 120 VAC,.7Amp, Electrical requirements with Power Venter: 120 VAC,3.0 FLAAmps
DIMENSIONS AND SHIPPING WEIGHTS
MODEL
NUMBER
INCHES
OR
CM
DIMENSIONS SHIPPING WEIGHT
A B C D E F G H 1 J STANDARD ASME
BTR-120
Inches
69-3/4 4-1/4 59-1/2 50-7/8 19-11/16 19 1/2 51-7/8 5 27-3/4 400 Lbs. -
CM
177 11 151 129 50 48 - 132 13 71 182 Kg
BTR-154
Inches
73 4-1/4 66-1/2 57-7/8 19-11/16 19 1/2 59 6 27-3/4 470 Lbs. -
CM
185 11 169 147 50 48 - 150 15 71 213 Kg -
BTR-180
Inches
67-1/2 4-1/2 62 53-5/8 20-1/2 21 1/2 54-5/8 6 27-3/4 470 Lbs. -
CM
171 12 157 136 52 53 - 139 15 71 213 Kg -
BTR-197
Inches
75 4-1/2 70 61-5/8 20-1/2 21 1/2 62-5/8 6 27-3/4 603 Lbs. .
CM
192 12 178 157 52 53 - 159 15 71 273 Kg -
BTR-198
Inches
75 4-1/2 70 61-5/8 20-1/2 21 1/2 61-1/2 6 27-S//4 603 Lbs. -
CM
192 12 178 157 52 53 - 150 15 71 273 Kg -
BTR-199
Inches
67-1/2 4-1/2 62 53-5/8 20-1/2 21 1/2 54-5/8 6 27-3/4 470 Lbs. -
CM
171 12 157 136 52 53 - 139 15 71 213 Kg -
BTR-200 (A)
Inches
72 4-1/2 65-1/8 55-7/8 19-3/4 23 1/2 56-3/8 6 30-1/4 630 Lbs. 725 Lbs.
CM
183 12 165 142 50 58 - 143 15 77 286 Kg 329 Kg
BTR-250 (A)
Inches
72 4-1/2 65-1/8 55-7/8 19-3/4 23 1/2 56-3/8 8 30-1/4 630 Lbs. 725 Lbs.
CM
183 12 165 142 50 58 - 143 20 77 286 Kg 329 Kg
BTR-251 (A)
Inches
75 4-1/2 65-3/4 57-1/4 20 N/A 1/2 58-3/4 8 27-3/4 750 Lbs. 862 Lbs.
CM
191 12 167 145 51 N/A - 149 20 71 341 Kg 391 Kg
BTR-275 (A)
Inches
72 4-1/2 65-1/8 55-7/8 19-3/4 23 1/2 56-3/8 8 30-1/4 630 Lbs. 725 Lbs.
CM
183 12 165 142 50 58 - 143 20 77 286 Kg 329 Kg
BTR-305 (A)
Inches
75 4-1/2 65-3/4 57-1/4 20 N/A 1/2 58-3/4 8 27-3/4 750 Lbs. 862 Lbs.
CM
191 12 167 145 51 N/A - 149 20 71 341 Kg 391 Kg
BTR-365 (A)
Inches
79-1/2 4-1/2 70-1/4 62-1/2 22-1/2 23 3/4 63 8 27-3/4 725 Lbs. 833 Lbs.
CM
202 12 178 159 57 58 - 160 20 71 329 Kg 379 Kg
BTR-400 (A)
Inches
75-1/2 4-1/2 67-1/2 58-1/4 26-3/4 23 3/4 59 8 30-1/4 760 Lbs. 874 Lbs.
CM
192 12 171 148 68 58 - 150 20 77 345 Kg 396 Kg
BTR-500 (A)
Inches
82-1/4 4-1/2 73-1/2 65-1/4 25-1/2 21 1 65-3/4 8 27-3/4 820 Lbs. 856 Lbs.
CM
209 12 187 166 65 53 - 167 20 71 372 Kg 388 Kg
BTR-250 (A), BTR-251 (A), BTR-275 (A) models shipped with 8” to 6” vent reducer. Certifi ed for both 6”or 8” vent.