A.O. Smith ATI-140H-N Technical Documents

Brand: A.O. Smith

Model: ATI-140H-N

Type: Technical Documents

A.O. Smith ATI-140H-N is a residential gas condensing high-efficiency tankless water heater with a 0.93 energy factor and ultra-low NOx emissions. It has a continuous maximum flow rate of 6.6 GPM and can be used for both hot water and heating applications. It features an electronic ignition system with no pilot light, built-in temperature controller, and advanced diagnostics for simplified troubleshooting. It also complies with lead-free standards and has a 15-year limited warranty on the heat exchanger and a 5-year limited warranty on all parts.

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

QUALIFIED

AVAILABLE IN NATURAL GAS OR PROPANE (LP)

ATI-140 & ATO-140 CAN BE USED IN RESIDENTIAL HOT WATER AND HEATING

APPLICATIONS (CHECK LOCAL CODES)

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

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

INDOOR MODEL

ATI-140H

OUTDOOR MODEL

ATO-140H

ANSI Z21.10.3

CSA 4.3

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

www.hotwater.com AOSRG46836

AOSRG46836 Condensing High Efficiency Tankless Spec _Layout 1 3/25/14 2:27 PM Page 1

Residential Gas Condensing High

Efficiency Tankless Water Heaters

AOSRG46836

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

TANKLESS HIGH EFFICIENCY CONDENSING MODELS

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.

MODEL

NUMBER

FUEL

TYPE

GAS CONSUMPTION

INPUT

INLET GAS

PRESSURE

ENERGY

FACTOR

MAX

GPM*

HOT/COLD

CONN.

GAS

CONN.

DIMENSIONS IN INCHES

UNIT

WEIGHT

(LBS)

MINIMUM

BTU/H

MAXIMUM

BTU/H

MINIMUM

W.C.

MAXIMUM

W.C.

HEIGHT

WIDTH

DEPTH

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

AOSRG46836 Condensing High Efficiency Tankless Spec _Layout 1 3/25/14 2:27 PM Page 2

Residential Gas Condensing High

Efficiency Tankless Water Heaters

AOSRG46836

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

Side viewFront view

13-7/8" (352mm)

4" (102mm)4" (102mm)

6-1/4" (158.5mm)

10" (254mm)

10-5/16" (262.2mm)

10-13/16" (274.6mm)

6" (152.1mm)

2-9/16" (64.8mm)

2-3/4" (70.2mm)

22-7/8 (580mm)

Gas 4/1/2" (113.7mm)

Hot 4-3/4" (121.1mm)

Condensate drain port

5-1/16" (129.1mm)

7-1/16" (180mm)

120VAC 3-1/16" (77mm)

Cold 1/2" (13.3mm)

Condensate drain port 3-1/4" (82.1mm)

Gas 4-1/8" (105.4mm)

Hot 6-1/2" (164.6mm)

Cold 7" (178.5mm)

120VAC 7-3/4" (196.5mm)

1" (25.5mm)

24" (609.4mm)

5-3/8" (137mm)

13-5/16" (338.1mm)

6" (152.1mm)

2-5/16" (58.4mm)

6-1/4" (158.5mm)

58.4

4-3/16" (106.1mm)

7-1/16" (179.2mm)

7-3/4" (197.2mm)

3-1/4" (82.8mm)

HOT 6-1/2" (165.3mm)

1/2" (13.3mm)

3-1/16" (77mm)

4-1/2" (113.7mm)

4-3/4" (121.1mm)

5-1/16" (129.1mm)

GAS

COLD

120VAC

Condensate drain port

BoƩom view

Top view

INDOOR MODEL

Side view

Front view

13-7/8" (352mm)

10" (254mm)

10-5/16" (262.2mm)

22-7/8 (580mm)

Gas 4/1/2" (113.7mm)

Hot 4-3/4" (121.1mm)

5-1/16" (129.1mm)

Condensate drain port

7-1/16" (180mm)

Cold 1/2" (13.3mm)

Condensate drain port 3-1/4" (82.1mm)

Gas 4-1/8" (105.4mm)

Hot 6-1/2" (164.6mm)

Cold 7" (178.5mm)

1" (25.5mm)

5-3/8" (137mm)

7-1/16" (180mm)

5-3/8" (137mm)

2-9/16" (65.8mm)

1-11/16" (42.5mm)

3" (75.5mm)

8" (203mm)

10-3/4" (272.4mm)

120VAC 3-13/16" (96.1mm)

120VAC 1-7/16" (36.8mm)

13-5/16" (338.1mm)

Condensate drain port

GAS

COLD

HOT 6-1/2" (165.3mm)

3-1/4" (82.8mm)

4-3/16" (106.1mm)

7-1/16" (179.2mm)

1/2" (13.3mm)

4-1/2" (113.7mm)

4-3/4" (121.1mm)

5-1/16" (129.1mm)

1-7/16" (36.8mm)

BoƩom view

Top view

OUTDOOR MODEL

AOSRG46836 Condensing High Efficiency Tankless Spec _Layout 1 3/25/14 2:27 PM Page 3

FLOW RATE vs TEMPERATURE RISE

PRESSURE LOSS

Residential Gas Condensing High

Efficiency Tankless Water Heaters

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

www.hotwater.com AOSRG46836

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

Flow Rate (gpm)