A.O. Smith BT-80 User Manual

Commercial Gas Water Heaters

CONSERVATIONIST

FULLY AUTOMATIC CONTROLS WITH SAFETY SHUTOFF

• Accurate, dependable control system requires no electric connections. Fixed automatic gas shutoff device for added safety.

• Temperature adjustable up to 181°F.

GLASSLINED TANK

• Maximizes tank life.

HEAVY GAUGE STEEL JACKET

• Finished with baked enamel over bonderized undercoat.

FOAM INSULATION

• Saves fuel, helps reduce standby heat loss.

LOW NOx

• Complies with Texas and other districts requirements for NOx emissions less than 40 ng/j.

EASY-TO-INSTALL

• Completely factory-assembled. Only gas, water and vent connections need be made. All connections are located in front and top of heaters for ease of installation and service.

DRAFT DIVERTER

• Low proﬁle diverter furnished as standard equipment.

MAXIMUM WORKING PRESSURE

• 150 psi.

GREEN CHOICE BURNER

• New Eco friendly Green Choice burner for cleaner emissions.

HANDHOLE CLEANOUT

• Allows for easy tank cleaning.

BUILT-IN GAS FILTER AND INTEGRAL DIRT LEG (PROPANE ONLY)

ANODIC PROTECTION

INTEGRAL AUTOMATIC GAS SHUTOFF SYSTEM PREVENTS EXCESSIVE WATER TEMPERATURE

STANDARDS AND CERTIFICATIONS

• All models meet the thermal efﬁciency and standby loss requirements of the U. S. Department of Energy and Current Edition ASHRAE/IESNA 90.1.

• CSA certiﬁed and ASME rated T&P relief valve.

• Not recommended for sanitation rinse.

3-YEAR LIMITED TANK / 1-YEAR LIMITED PARTS WARRANTY

• For complete warranty information, consult written warranty or go to hotwater.com.

BT-80 & BT-100

MAXIMUM GAS INLET PRESSURE

• 14” W.C.

www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015

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AOSCG10600

Commercial Gas Water Heaters

HOT WATER OUTLET

DRAIN

VALVE

COLD WATER INLET

TOP VIEW

TEMPERATURE

AND PRESSURE

RELIEF VALVE

HOT

COLD

DRAIN VALVE

GAS INLET

ANODE ROD

Model

Number

BT-80

BT-100

Model

Number

BT-80 74 280 75,100 22

BT-100 98 371 75,100 22

Units

Inches 61-1/8 58-1/2 29-11/16 26-1/2 15-3/16 4 14-1/2 16 1-1/4 1 1/2 11-15/16 lbs 275

CM 155.25 148.6 75.4 67.3 38.6 10.2 39.4 40.6 3.2 NPT NPT 30.3 kg 124.7

Inches 68-5/8 66-1/2 30-15/16 27-3/4 15-3/16 4 15-3/4 16 1-1/4 1-1/4 1/2 11-15/16 lbs 350

CM 174.3 168.9 75.59 70.5 38.6 10.2 40 40.6 3.2 NPT NPT 30.3 kg 158.8

Capacity Input Rating

Gallon Litres

A B C D E F G H J K L M

BTU/HRkW/

Hr.

30°F

(17°C)

243

(916)

243

(916)

40°F

(22°C)

182

(686)

182

(686)

50°F

(28°C)

146

(550)

146

(550)

Dimensions Approx.

Temperature Rise

GPH (LPH)

60°F

(33°C)

121

(456)

121

(456)

70°F

(39°C)

104

(392)91(343)81(305)73(275)66(249)61(230)56(211)52(196)

104

(392)91(343)81(305)73(275)66(249)61(230)56(211)52(196)

80°F

(45°C)

90°F

(50°C)

100°F (56°C)

110°F (61°C)

120°F (67°C)

130°F (72°C)

Shipping

Weight

140°F

(78°C)

SPECIFICATION

Water heater(s) shall be Model ________________ as manufactured by A. O. Smith or an approved equal. Water heater(s) shall be of glasslined design, and gas-ﬁred, equipped to burn __________ gas and design certiﬁed by CSA and shall be approved by the National Sanitation Foundation (with optional leg kit). Heaters must meet all applicable energy codes. Heaters shall have an input rating of _____ BTU/H and a recovery capacity of 73 GPH at a temperature rise of 100°F with a storage capacity of _____ gallons. Heater shall be equipped with a 2-3/4” x 3-3/4” boiler-type handhole cleanout and shall have a working pressure of 150 psi. Heater(s) shall be provided with an automatic gas shutoff device and safety shutoff in the event the pilot ﬂame is extinguished; a gas pressure regulator set for the type of gas supplied; an approved draft diverter, and extruded anode rod rigidly supported for cathodic protection. A CSA Certiﬁed and ASME Rated T&P Relief Valve shall be furnished and installed by the manufacturer. The tank shall be foam insulated. The outer jacket shall have a baked enamel ﬁnish over a bonderized undercoating. All internal surfaces of the heater exposed to water shall be glasslined with an alkaline borosilicate composition that has been fused-to-steel by ﬁring at a temperature range of 1400° to 1600°F. Heater tank shall have a three year limited warranty against corrosion and tank failure due to sediment build-up as outlined in the written warranty. Operation of the heater in a closed system where thermal expansion has not been compensated for with a properly sized expansion tank will void the warranty. Fully illustrated instruction manual and parts list to be included.

For technical information, call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.

www.hotwater.com | 800-527-1953 Toll-Free USA

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AOSCG10600