A. O. Smith BTRC-154 User Manual
Commercial Gas
®
Tank-Type Water Heaters
MasterFit
®
FEATURES
80+ % thermal efficiency affords lower operating costs on most models.
WATER CONNECTIONS - For ease of installation, BTRC's feature on most models water
connections on the top, front, and rear.
GLASS LINED TANK - Permaglas® Ultracoat is the proprietary ceramic coating
developed by A.O. Smith's ceramic engineers specifically for this heater. It is applied after
the complete tank has been assembled to give a seamless barrier against corrosion by
hot water. The maximum working pressure is 160 psi (1103 kPa).
FULLY AUTOMATIC CONTROLS WITH SAFETY SHUTOFF — Accurate, dependable
control system. Manual reset gas shutoff device for added safety. Maximum inlet gas
pressure is 14" W.C. Minimum gas pressure is 4.5" W.C. natural gas, 11" W.C. propane.
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 easy cleaning.
FULLY TESTED FOR SAFETY AND PERFORMANCE — Design certified by the Underwriters
Laboratory for 180°F (82°C) hot water service. Meets rigid requirements of the National Sanitation
Foundation when equipped with optional leg kit. Certified for use on combustible flooring.
INTERMITTENT IGNITION DEVICE — Eliminates standing pilot. Provides flame failure response
in less than one second. Power ON/OFF switch
BTRC 120-500(A)
EASY-TO-INSTALL — Completely factory-assembled. Only gas, water, vent and electric
connections need be made. Provided with drain valve.
FACTORY INSTALLED AND TESTED DRAFT DIVERTER — Low profile draft diverter with
automatic motorized flue damper to minimize standby losses.
ANODES — CoreGuard™ long-life, stainless steel core anode rods.
COMPLIANCE — All models comply with ANSI Z21.10.3 - CSA 4.3 Standards and meet or
exceed the thermal efficiency and/or standby loss requirements of the U.S. Department of
Energy and current edition of ASHRAE/IESNA 90.1.
LIMITED WARRANTY OUTLINE — If the tank should leak any time during the first three years,
under the terms of the limited warranty, A. O. Smith will furnish a replacement heater; installation,
labor, handling and local delivery extra. THIS OUTLINE IS NOT A WARRANTY. For complete
information, consult the written warranty or A. O. Smith Water Products Company. Warranty does
not apply to product installed outside of the United States of America or its territorial possessions
and Canada.
OTHER FEATURES
• Equipped with gas pressure regulator and pilot filter.
• Integral automatic gas shutoff system prevents excessive water temperature.
• CSA Certified and ASME Rated T&P relief valve.
• Maximum working pressure is 160 psi (1103 kPa) standard.
• Cathodic protection.
• Adjustable thermostat with a 120-180°F (49°C-82°C) range.
OPTIONS
• Power vent kits for side wall venting.
• Meets NSF Standard 5 with optional leg kit.
ASME
on selected models.
Approved to NSF
Standard 5
with Optional Leg Kit
Page 1 of 4
CANCG10000
ROUGH-IN DIMENSIONS - SIDE VIEW
Models BTRC 120-500
Gas Connection
Clearance To Clearance To
Combustibles Non-Combustibles
Model Sides & Rear Top Cover Sides & Rear Top Cover
BTRC -120 1" 12" 0" 12"
(2.54 cm) (30.48 cm) (0cm) (50.8cm)
BTRC -154 1" 12" 0" 12"
(2.54 cm) (30.48 cm) (0cm) (50.8cm)
BTRC -180 1" 12" 0" 12"
(2.54 cm) (30.48 cm) (0cm) (50.8cm)
BTRC -197 1" 12" 0" 12"
(2.54 cm) (30.48 cm) (0cm) (50.8cm)
BTRC -199 1" 12" 0" 12"
(2.54 cm) (30.48 cm) (0cm) (50.8cm)
BTRC -200A 1" 12" 0" 12"
(2.54 cm) (30.48 cm) (0cm) (50.8cm)
BTRC -250A 2" 12" 0" 12"
(5.1 cm) (30.48 cm) (0cm) (50.8cm)
BTRC -251(A) 2" 12" 0" 12"
(5.1 cm) (30.48 cm) (0cm) (50.8cm)
BTRC -275A 2" 12" 0" 12"
(5.1 cm) (30.48 cm) (0cm) (50.8cm)
BTRC -305(A) 2" 12" 0" 12"
(5.1 cm) (30.48 cm) (0cm) (50.8cm)
BTRC -365(A) 4" 4" 4" 12"
(10.16 cm) (10.16 cm) (10.16cm) (50.8cm)
BTRC -400A 3" 12" 0" 12"
(7.8 cm) (30.48 cm) (0cm) (50.8cm)
BTRC -500A 5" 24" 0" 12"
(12.7 cm) (61 cm) (0cm) (50.8cm)
Top View of BTRC
Water Connections in Inches (NPT)
Inlet Outlet
Model Top Front Rear Top Front Rear
BTRC-120 1.50" 1.50" 1.50" 1.50" 1.50" 1.50"
1.50" 1.50" 1.50" 1.50" 1.50" 1.50"
BTRC-154 1.50" 1.50" 1.50" 1.50" 1.50" 1.50"
1.50" 1.50" 1.50" 1.50" 1.50" 1.50"
BTRC-180 1.50" 1.50" 1.50" 1.50" 1.50" 1.50"
1.50" 1.50" 1.50" 1.50" 1.50" 1.50"
BTRC-197 1.50" 1.50" 1.50" 1.50" 1.50" 1.50"
1.50" 1.50" 1.50" 1.50" 1.50" 1.50"
BTRC-199 1.50" 1.50" 1.50" 1.50" 1.50" 1.50"
1.50" 1.50" 1.50" 1.50" 1.50" 1.50"
BTRC-200 1.50" 2.00" 2.00" 1.50" 2.00" 2.00"
1.50" 2.00" 2.00" 1.50" 2.00" 2.00"
BTRC-250 1.50" 2.00" 2.00" 1.50" 2.00" 2.00"
1.50" 2.00" 2.00" 1.50" 2.00" 2.00"
BTRC-251 NA 1.50" 1.50" NA 1.50" 1.50"
NA 1.50" 1.50" NA 1.50" 1.50"
BTRC-275 1.50" 2.00" 2.00" 1.50" 2.00" 2.00"
1.50" 2.00" 2.00" 1.50" 2.00" 2.00"
BTRC-305 NA 1.50" 1.50" NA 1.50" 1.50"
NA 1.50" 1.50" NA 1.50" 1.50"
BTRC-365 NA 1.50" 1.50" NA 1.50" 1.50"
NA 1.50" 1.50" NA 1.50" 1.50"
BTRC-400 1.50" 2.00" 2.00" 1.50" 2.00" 2.00"
1.50" 2.00" 2.00" 1.50" 2.00" 2.00"
BTRC-500 1.50" 1.50" 1.50" 1.50" 1.50" 1.50"
1.50" 1.50" 1.50" 1.50" 1.50" 1.50"
Gas Pressure Requirements
Natural Gas Propane Gas
Max. Supply Pressure 13.8" w.c. 13.8" w.c.
Min. Supply Pressure 4.5" w.c. 11" w.c.
Manifold Pressure 3.5" w.c. 10" w.c.
Page 2 of 4
CANCG10000
Electrical Specifications
Volts Amps
7.CAV021CRTB
BTRC with Power Venter 120VAC 3.0 FLA
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