Manufacturer |
A. O. Smith® |
Equipment Grade |
Commercial |
Input Power |
366000 KBTU/hr107 kW |
Capacity |
85 U.S. gal322 L |
Thermal Efficiency |
82 % |
Type |
Natural Gas |
Minimum Gas Supply Pressure |
0.87 kPa15 inWc |
Maximum Gas Supply Pressure |
14 inWc3.48 kPa |
Sides and Rear Clearance to Combustibles |
0 in |
Top Cover Clearance to Combustibles |
12 in |
Sides and Rear Clearance to Non-Combustibles |
0 in |
Top Cover Clearance to Non-Combustibles |
12 in |
Top Inlet Water Connection |
1-1/2 in |
Front Inlet Water Connection |
1-1/2 in |
Back Inlet Water Connection |
1-1/2 in |
Top Outlet Water Connection |
1-1/2 in |
Front Outlet Water Connection |
1-1/2 in |
Back Outlet Water Connection |
1-1/2 in |
Standard Approximate Shipping Weight |
850 lb386 kg |
ASME Approximate Shipping Weight |
900 lb408 kg |
Industry Standards |
ANSI Z-21.10.3 - CSA 4.3 ASHRAE/IESNA 90.1 ASME Certified |
Schematic |
 Schematic Drawing for Master-Fit® Ultra-Low NOx Commercial Gas Water Heaters (BTL-275(A) to BTL-400(A)) |
Dimension A |
76 in193 cm |
Dimension B |
16-1/4 in41.2 cm |
Dimension C |
78-1/4 in198.8 cm |
Dimension D |
65-3/4 in167 cm |
Dimension E |
25-3/4 in65.4 cm |
Dimension F |
21 in53.3 cm |
Dimension G |
3/4 NPT |
Dimension H |
66-1/4 in168.3 cm |
Dimension I |
6 in15.2 cm |
Dimension J |
27-3/4 in70.5 cm |
Dimension K |
1-1/2 NPT |
Dimension L |
1-1/2 NPT |
Dimension M |
41 in104 cm |
Recovery at 36 ºF Temperature Rise |
1003 gal/h |
Recovery at 40 ºF Temperature Rise |
903 gal/h1898 L/h |
Recovery at 50 ºF Temperature Rise |
722 gal/h |
Recovery at 54 ºF Temperature Rise |
669 gal/h |
Recovery at 60 ºF Temperature Rise |
602 gal/h |
Recovery at 70 ºF Temperature Rise |
516 gal/h |
Recovery at 72 ºF Temperature Rise |
501 gal/h |
Recovery at 90 ºF Temperature Rise |
451 gal/h |
Recovery at 100 ºF Temperature Rise |
361 gal/h |
Recovery at 108 ºF Temperature Rise |
334 gal/h |
Recovery at 110 ºF Temperature Rise |
328 gal/h |
Recovery at 120 ºF Temperature Rise |
301 gal/h |
Recovery at 126 ºF Temperature Rise |
287 gal/h |
Recovery at 130 ºF Temperature Rise |
278 gal/h |
Recovery at 140 ºF Temperature Rise |
258 gal/h |
Recovery at 20 ºC Temperature Rise |
3797 L/h |
Recovery at 22 ºC Temperature Rise |
3417 L/h |
Recovery at 28 ºC Temperature Rise |
2734 L/h |
Recovery at 30 ºC Temperature Rise |
2531 L/h |
Recovery at 33 ºC Temperature Rise |
2278 L/h |
Recovery at 39 ºC Temperature Rise |
1953 L/h |
Recovery at 50 ºC Temperature Rise |
1519 L/h |
Recovery at 56 ºC Temperature Rise |
1367 L/h |
Recovery at 60 ºC Temperature Rise |
1266 L/h |
Recovery at 61 ºC Temperature Rise |
1243 L/h |
Recovery at 67 ºC Temperature Rise |
1139 L/h |
Recovery at 70 ºC Temperature Rise |
1085 L/h |
Recovery at 72 ºC Temperature Rise |
1051 L/h |
Recovery at 78 ºC Temperature Rise |
976 L/h |
Features |
82% thermal efficiency means lower operating costs. Fan Assisted Combustion - The blower is built into the Low NOx burner assembly for Ultra-Low NOx readings that comply with SCQAMD rule1146.2 of 14 ng/j or 20 ppm. Metal Venting - Rated Category I Appliance. Uses standard double wall type "B" vent. Can be commonly vented with other Category I appliances. Vent connects directly to the vent connector outlet. No Draft hood or barometric damper required. Perfect choice for retrofit and upgrade installations. Water Connections - For ease of installation, all BTLs feature water connections on the top, front, and rear. "The Eliminator™" inlet water connection eliminates harmful scale buildup, extending the life of the product. The front inlet connection must be used for the Eliminator™ benefits. Glass Lined Tank - Permaglas® Ultracoat is the proprietary ceramic coating developed by A. O. Smith®’s ceramic engineers specifically for the heater. It is applied after the complete tank has been assembled to give a seamless barrier against hot water corrosion. Installed Cost Savings - When multiple BTL units are exclusively used in a vent manifold, use the National Fuel Gas Code Table 13 Vent Sizing information to determine vent diameter and specifications. The BTL often uses a smaller vent diameter than a natural draft water heater which saves on installation cost. Fully Automatic Digital Controls with Safety Shutoff - Accurate, dependable control system. Features a two speed blower control for smooth main burner light-off. Manual reset gas shutoff device for added safety. Maximum inlet gas pressure is 14" W.C. Minimum gas pressure is 3.5" W.C. Natural Gas. Foam Insulation - Saves fuel, helps reduce standby heat loss. Jacket - Heavy gauge steel finished with a baked enamel finish over a bonderized undercoat. Easy Cleaning - Handhole cleanout allows access for easy cleaning. Intermittent Ignition Device - Eliminates standing pilot. Provides flame failure response in less than one second. Spark igniter and power ON/OFF switch. Easy-to-install - Completely factory-assembled. Only gas, water, vent and electric connections need be made. Provided with drain valve. Anodes - CoreGuard™ long-life, stainless steel core anode rods. Plug Kits - Pipe nipples and caps are included to plug unused water connections. |
Other Standard Features |
|
Testing and Certifications |
Fully Tested for Safety and Performance - Design certified by the Underwriters Laboratory for 180°F hot water service. Meets rigid requirements of the National Sanitation Foundation when equipped with optional leg kit. Certified for use on combustible flooring. Approval Ratings and Certification - All models meet ANSI Z21.10.3 - CSA® 4.3 standards and the thermal efficiency and standby loss requirements of the U.S. Department of Energy and current edition of ASHRAE/IESNA 90.1. NSF LEG Kit
|
