A.O. Smith ATI-140H-P, ATI-140H-N, ATO-140H-P, ATO-140H-N Technical Documents

Residential Gas Condensing High Efficiency Tankless Water Heaters

FEATURES

ULTRA-LOW NOx CONDENSING TECHNOLOGY PROVIDES 0.93 ENERGY FACTOR (EF)

COMPLIES WITH CALIFORNIA SCAQMD RULE 1146.2 AND OTHER AIR QUALITY MANAGEMENT DISTRICTS WITH SIMILAR NOx EMISSION REQUIREMENTS OF 14 ng/J OR 20 PPM

OPERATES ON 1/2" GAS LINE WITH STANDARD GAS PRESSURES

DURABLE HEAT EXCHANGERS

■Copper Primary Heat Exchanger

■Secondary Heat Exchanger is made of Marine Grade Type 316L Stainless Steel to protect against

corrosion

CONTINUOUS MAXIMUM FLOW RATES UP TO 6.6 GPM

ENERGY STAR

AVAILABLE IN NATURAL GAS OR PROPANE (LP)

ATI-140 & ATO-140 CAN BE USED IN RESIDENTIAL HOT WATER AND HEATING APPLICATIONS (CHECK LOCAL CODES)

QUALIFIED

INDOOR MODEL

ATI-140H

ELECTRONIC IGNITION - NO PILOT LIGHT

INDOOR MODEL - INCLUDES A BUILT-IN TEMPERATURE CONTROLLER AND ADVANCED DIAGNOSTICS TO SIMPLIFY TROUBLESHOOTING

OUTDOOR MODEL - INCLUDES A WALL MOUNT TEMPERATURE REMOTE CONTROLLER AND ADVANCED DIAGNOSTICS TO SIMPLIFY TROUBLESHOOTING

FACTORY-INSTALLED POWER CORD INCLUDED FOR INDOOR MODELS

COMPLIES WITH LEAD FREE STANDARDS

SAFETY FEATURES:

■Air-Fuel Ratio (AFR) Sensor

■Exhaust & Water Temperature Safety Control

■Overheat Cut-Off Fuse

INTERNAL FREEZE PROTECTION SYSTEM

POWER DIRECT VENT DESIGN

■Exhaust, 3" PVC Venting up to 70 Feet or 4" PVC Venting up to 100 Feet

■Provides flexible venting with PVC, CPVC, or ABS Pipe for Intake and Exhaust (solid core only).

■Category IV Stainless Steel venting can also be used

ACCESSORIES

■Pipe Cover

■Neutralizer Kit

■Isolation Valve Kits

■Concentric Termination

■Recess Box

OUTDOOR MODEL

ATO-140H

WARRANTY

■15-year limited warranty on heat exchanger in residential applications

■10-year limited warranty on heat exchanger in commercial applications

■5-year limited warranty on all parts

A. O. Smith Corporation • 500 Tennessee Waltz Parkway • Ashland City, TN 37015 • 800-527-1953 Toll-free USA Page 1 of 4

ANSI Z21.10.3

CSA 4.3

www.hotwater.com AOSRG46836

Residential Gas Condensing High Efficiency Tankless Water Heaters

TANKLESS HIGH EFFICIENCY CONDENSING MODELS

MODEL

NUMBER

FUEL TYPE

GAS CONSUMPTION

INPUT

MINIMUM

BTU/H

MAXIMUM

BTU/H

INLET GAS PRESSURE

MINIMUM

W.C.

MAXIMUM

W.C.

ENERGY

FACTOR

MAX

GPM*

HOT/COLD

CONN.

GAS

CONN.

DIMENSIONS IN INCHES

HEIGHTBWIDTHCDEPTH

WEIGHT

INDOOR

ATI-140H-N Natural 15,000 120,000 5.0 10.5 0.93 6.6 3/4” NPT 1/2” NPT 22-7/8 13-7/8 10-13/16 44

ATI-140H-P Propane 15,000 120,000 8.0 14.0 0.93 6.6 3/4” NPT 1/2” NPT 22-7/8 13-7/8 10-13/16 44

OUTDOOR

ATO-140H-N Natural 15,000 120,000 5.0 10.5 0.93 6.6 3/4” NPT 1/2” NPT 22-7/8 13-7/8 10-13/16 44

ATO-140H-P Propane 15,000 120,000 8.0 14.0 0.93 6.6 3/4” NPT 1/2” NPT 22-7/8 13-7/8 10-13/16 44

All dimensions are in inches. 15-150 psi Water Pressure. 40 psi or above is recommended for maximum flow. *Current numbers based on factory testing; 0.5 gpm for activation; 0.4 gpm required for continuous fire after initial ignition. Indoor models are certified from sea level to 10,100 ft. elevations. In accordance with ANSI Z21.10.3, CO emission does not exceed 400 PPM for normal input. The manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligation.

UNIT

(LBS)

For Technical Information call 1-877-737-2840. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.

AOSRG46836

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