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TX1 COMMERCIAL INTEGRATED
TANKLESS ON TANK
COMMERCIAL
GAS WATER HEATERS
The TX1 condensing water heater combines tankless with a tank to deliver energy saving
performance.
INTEGRATED CT-199 CONDENSING
TANKLESS
• Delivers 96% thermal efficiency
• Modulating burner
• Heat exchanger constructed of commercial grade
copper
• Secondary heat exchanger constructed of 316 grade
stainless steel
• 185°F Max Temperature
• Available in natural gas or propane
119 GALLON STORAGE TANK
• Glass lined tank
• Multiple anodes protect the tank
• Front water inlet and top water outlet
• High density foam reduces standby heat losses
• Heavy gauge steel jacket
• 160 psi working pressure
CODES AND STANDARDS
• CSA certified and ASME rated T&P relief valve
• Maximum hydrostatic working pressure: 160 psi
• All models are design certified by Underwriters
Laboratories (UL), Inc., to ANSI Z21.10.3 - CSA 4.3
Standards
• Meets the thermal efficiency and standby loss
requirements of the U.S. Department of Energy and
current edition ASHRAE/IES 90.1
• Complies with SCAQMD Rule 1146.2 and other
Air Quality Management Districts with similar
requirements for ultra low-NOx emissions
• Complies with lead free standards
6 YEAR LIMITED HEAT EXCHANGER
AND TANK, 5 YEAR LIMITED PARTS
WARRANTY
• For complete warranty information, consult written
warranty or go to hotwater.com.
COMMERCIAL-GRADE
COMPONENTS
• 4.1 GPM pump
• Advanced electronic control
• Factory installed T&P and pressure relief valves
ATX-199 MODEL
© June 2019 A. O. Smith Corporation. All Rights Reserved
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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AOSCG12000
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COMMERCIAL
GAS WATER HEATERS
C
A
F
G
E
Water Connection Size: Inlet/Outlet 2" Female NPT
B
D
ATX-199
Supply Gas Connection: 3/4" Male NPT
DIMENSIONS
Dimensions
A B C D E F G
Inches (cm) Inches (cm) Inches (cm) Inches (cm) Inches (cm) Inches (cm) Inches (cm) LBS (KG)
72 (183) 58.7 (149) 41 (104) 11.8 (30) 4.3 (11) 61.38 30 (76) 520 (236)
Electrical characteristics-120V-60Hz A.C., 5.0 A
Propane gas models available
Dimensions and specifications subject to change without notice in accordance with our policy of continuous product improvement.
Approx. Ship
Weight
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AOSCG12000
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COMMERCIAL
GAS WATER HEATERS
RECOVERY CAPACITIES
U.S. Gallons/hr & liters/hr at temperature rise indicated
Type of
Gas
Natural
Propane LPH 2922 2192 1753 1461 1253 1094 973 878 799 731 674 625
Input
Btu/hr kW °C 17°C 22°C 28°C 33°C 39°C 44°C 50°C 56°C 61°C 67°C 72°C 78°C
199000 58.32 96
Thermal
Efficiency%
STORAGE CAPACITY
°F 30°F 40°F 50°F 60°F 70°F 80°F 90°F 100°F 110°F 120°F 130°F 140°F
GPH 772 579 463 386 331 289 257 232 211 193 178 165
Model
Number
ATX-199-N 119 450.96
ATX-199-P 119 450.96
U.S. Gallons Liters
GAS PRESSURE REQUIREMENTS
Manifold Pressure Minimum Supply Pressure Maximum Supply Pressure
NATURAL GAS PROPANE GAS NATURAL GAS PROPANE GAS NATURAL GAS PROPANE GAS
2.95” W.C. (0.73 kPa) 3.3” W.C. (0.82 kPa) 4.0” W. C. (1.00 kPa) 8.0” W. C. (1.99 kPa) 10.5” W. C. (2.61 kPa) 14” W. C. (3.49 kPa)
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AOSCG12000
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COMMERCIAL
GAS WATER HEATERS
SUGGESTED SPECIFICATION
(Natural or Propane) gas water heater(s) shall be A. O. Smith TX1 model # _________ or equal, minimum 96% thermal efficiency, a storage capacity of 119
gallons, an input rating of 199,000 BTUs per hour, a recovery rating of 232 gallons per hour (gph) at 100°F rise and a maximum hydrostatic working pressure of
160 psi. Water heater(s) shall: 1. Modulating gas burner that automatically adjusts the input based on demand. 2. Dual anodes. 3. Have seamless glass-lined steel
tank construction, with glass lining applied to all water-side surfaces after the tank has been assembled and welded; 4. Meets the thermal efficiency and/or standby
loss requirements of the U. S. Department of Energy and current edition of ASHRAE/IES 90.1; 5. Have foam insulation and a CSA Certified and ASME rated T&P relief
valve; 6. Have a condensing tankless with modulating burner as the heat source; 7. Be approved for 0˝ clearance to combustibles.
The control shall be an integrated solid-state temperature and ignition control device with integral diagnostics, graphic user interface, fault history display, and
shall have digital temperature readout. 1. All models are design certified by Underwriters Laboratories (UL), Inc., according to ANSI Z21.10.3 - CSA 4.3 standards
governing storage type water heaters; 2. Meet the thermal efficiency and standby loss requirements of the U. S. Department of Energy and current edition ASHRAE/
IES 90.1; 3. Complies with SCAQMD Rule 1146.2 and other air quality management districts with similar requirements for low NOx emissions.
For Standard Power Venting: Water heater(s) shall be suitable for power venting using a (3˝ or 4˝ ) _______ diameter PVC pipe for a total distance of (70 ft or
100 ft.) ______ equivalent feet of vent piping. For Power Direct Venting: Water heater(s) shall be suitable for power direct venting using a (3˝ or 4˝ ) _______
diameter PVC pipe for a total distance of (70 ft or 100 ft.) ______ equivalent feet of vent piping and (50 ft. or 120 ft.)______ equivalent feet of intake air piping.
Operation of the water heater(s) in a closed system where thermal expansion has not been compensated for (with a properly sized thermal expansion tank) will
void the warranty.
For Technical Information, call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
© June 2019 A. O. Smith Corporation. All Rights Reserved
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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AOSCG12000
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