A. O. Smith BTRC-154 User Manual

Commercial Gas

® Tank-Type Water Heaters

MasterFit®	BTRC 120-500(A)
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
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.	ASME
• Maximum working pressure is 160 psi (1103 kPa) standard.
• Cathodic protection.
• Adjustable thermostat with a 120-180°F (49°C-82°C) range.	on selected models.
OPTIONS
• Power vent kits for side wall venting.	Approved to NSF
• Meets NSF Standard 5 with optional leg kit.	Standard 5
	with Optional Leg Kit
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CANCG10000

ROUGH-IN DIMENSIONS - SIDE VIEW

Models BTRC 120-500

Gas Connection

Top View of BTRC

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)

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.

Electrical Specifications

	Volts	Amps
BTRC	120VAC	.7
BTRC with Power Venter	120VAC	3.0 FLA

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CANCG10000