A.O. Smith BTR 151 THRU 201/A - Manual (Page 2)

2
FOREWORD
These designs comply with ANSI Z21.10.3 as a Booster type
water heater.
Detailed installation diagrams are found in this manual. These
diagrams will serve to provide the installer with a reference for
the materials and methods of piping necessary. It is highly
essential that all water, gas piping and wiring be installed as
shown on the diagrams.
Particular attention should be given to the installation of
thermometers at the locations indicated on the diagrams as
these are necessary for checking the proper functioning of the
heater.
The heater is designed to operate on natural gas.
These heaters may be installed on combustible floors.
In addition to these instructions, the equipment shall be installed
in accordance with those installation regulations in force in the
local area where the installation is to be made. These shall be
carefully followed in all cases. Authorities having jurisdiction
should be consulted before installations are made.
The installation must conform to these instructions and the local
code authority having jurisdiction. In the absence of local codes,
the installation must comply with the latest editions of the
National Fuel Gas Code, ANSI Z223.1/NFPA 54 and the National
Electrical Code, NFPA 70, documents are available from the
National Fire Protection Association, 1 Batterymarch Park, Quincy,
MA 02269.
ROUGH-IN-DIMENSIONS
FIGURE 1
TABLE 1 - HEATER PERFORMANCE DATA
Input Approx. RECOVERY RATING CAPACITIES (GPH) AT TEMPERATURE RISE SHOWN
Rate Tank Approx. F 20°F 30°F 40°F 50°F 60°F 70°F 80°F 90°F 100°F 110°F 120°F 130°F 140°F
Model Btuh Cap. Eff. % C 11°C 17°C 22°C 28°C 33°C 39°C 44°C 50°C 56°C 61°C 67°C 72°C 78°C
BTR-151 150,000 NAT 32 Gal 80 GPH 727 485 364 291 242 208 182 162 145 132 121 112 104
44 kW/Hr. NAT 121 Litres LPH 2752 1836 1378 1102 916 787 689 613 549 500 458 424 394
BTR-151 150,000 LP 32 Gal 80 GPH 727 485 364 291 242 208 182 162 145 132 121 112 104
44 kW/Hr. LP 121 Litres LPH 2752 1836 1378 1102 916 787 689 613 549 500 458 424 394
BTR-201 199,900 NAT 32 Gal 80 GPH 969 646 485 388 323 277 242 215 194 176 162 149 139
59 kW/Hr. NAT 121 Litres LPH 3668 2445 1836 1469 1223 1049 916 814 734 666 613 564 526
BTR-201 182,000 LP 32 Gal 80 GPH 882 588 441 353 294 252 221 196 177 160 147 136 126
53 kW/Hr. LP 121 Litres LPH 3339 2226 1669 1336 1113 954 837 742 670 606 557 515 477