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  3. ATI-140H-N
ATI-140H-N

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

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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
© 2014 A. O. Smith Corporation. All rights reserved. Page 2 of 4
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.
A
HEIGHT
B
WIDTH
C
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
© 2014 A. O. Smith Corporation. All rights reserved. Page 3 of 4
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)
1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140
2
3
4
5
6
7
8
0
Temperature Rise (°F)
AOSRG46836 Condensing High Efficiency Tankless Spec _Layout 1 3/25/14 2:27 PM Page 4
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