Specifications

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Commercial Gas Water Heaters
Revised February 2013 Page 4 of 4
www.hotwater.com AOSCG10300
SUGGESTED SPECIFICATION
(Natural or Propane) gas water heater(s) shall be A. O. Smith Master-Fit
®
model # _____________ or equal, with a
storage capacity of __________ gallons, an input rating of ___________________ BTUs per hour, a recovery rating
of_________ gallons per hour (gph) at 100ºF rise and a maximum hydrostatic working pressure of 160 psi. Water
heater(s) shall be protected against overheating caused by the buildup of scale, film and other sediment by a
self-cleaning device, positioned inside the tank so that it directs the flow of inlet water to keep precipitated solids
in suspension so that they are removed from the water heater on that or successive draws. Glasslined water heater(s)
shall also be protected against electrolytic corrosion by multiple factory-installed anode rods. In addition, water
heater(s) shall: 1) Be equipped with an integrated control system consisting of a 180ºF adjustable thermostat with
upper and lower sensing bulbs. 2) Be equipped with intermittent electronic ignition, a manual reset gas shutoff
device, a gas pressure regulator, factory-installed, CSA Certified and ASME Rated T&P relief valve and
2-3/4˝ x 3-3/4˝ tank inspection port. 3) Be design-certified by UL (Underwriters Laboratories) to current
edition of ANSI Z.21.10.3 - CSA 4.3 standards governing storage-type water heaters. 4) Meets the thermal
efficiency and standby loss requirements of the U. S. Department of Energy and Current Edition of
ASHRAE/IESNA 90.1. 5) Have a 3-year limited warranty against corrosion as outlined in the written warranty.
DIMENSIONS AND SHIPPING WEIGHTS
MODEL
NUMBER
INCHES
OR
CM
THGIEW GNIPPIHSSNOISNEMID
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 6 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
81-1/2 17-1/2 77-1/4 67-1/2 27-13/100 21 1 67-1/2 8 27-3/4 812 Lbs. 857 Lbs.
CM
209 12 187 166 65 53 - 167 20 71 368 Kg 389 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.
229426_AOSCG10300.indd 4 10/11/10 9:41 AM
*BTR-120 approved for 5” venting using field supplied 6” to 5” reducer.