Water Heater Submittal

ManualsBrandsA.O. Smith ManualsWater HeatersX3 - 5.1 GPM at 60° F Rise - 0.94 UEF - Gas Tankless Water Heater - Indoor

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

COMMERCIAL-GRADE

RESIDENTIAL GAS WATER HEATERS

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AOSRG47112

FEATURES:

X3 SCALE PREVENTION

TECHNOLOGY (PATENT PENDING)

• No annual descaling required

• No scale buildup means the heater

maintains like-new performance longer

ENERGY STAR

QUALIFIED

DURABLE HEAT EXCHANGER

• Primary heat exchanger is constructed of

a commercial-grade copper that is more

resilient to corrosion. Copper is 25x better

at heat transfer than Stainless Steel, thus

stabilizing outgoing water temperatures

quicker

• Secondary heat exchanger is made of 316L

Stainless Steel to protect against corrosion

QUALIFIED AS LEAD FREE UNDER

THE SAFE DRINKING WATER ACT

SAFETY FEATURES

• Exhaust & Water Temperature Safety

Control

• Overheat Cut-Off Fuse

• Air-Fuel Ratio (AFR) Sensor

INTERNAL FREEZE PROTECTION

SYSTEM

RECIRC CAPABLE

• Tankless water heaters with X3 Technology

are approved to work with an external

recirculation pump and cross-over valve.

See training manual for full details.

POWER DIRECT VENT DESIGN

• Category III or IV venting can be used

• Exhaust, 3” PVC up to 70’; 4” PVC up to

100’

• Provides ﬂexible venting with PVC, CPVC,

polypropylene, or ABS Pipe for Intake and

Exhaust (solid core only)

ACCESSORIES

• Pipe Cover

• Neutralizer Kit

• X3 Freeze Protection Kit

• Concentric Termination

• Recess Box

WARRANTY

• No hardwater exclusions in the industry’s

ﬁrst “peace of mind” limited warranty

• 15-year limited warranty on heat exchanger

in residential applications

• 5-year limited warranty on all parts in

residential applications

• 1-year limited warranty on heat exchanger

and parts in commercial applications

• For complete information, consult written

warranty or go to hotwater.com

PROLINE

XE CONDENSING TANKLESS

WITH X3

SCALE PREVENTION

TECHNOLOGY

An expert in both water heating and treatment, A. O. Smith is uniquely qualiﬁed to

combine the two technologies in a product designed to revolutionize tankless water

heating. Our new condensing gas tankless line features X3 Technology that extends

life on the unit up to three times longer than traditional/unprotected models.

CSA/ANSI Z21.10.3•CSA 4.3

OUTDOOR

ATO-240HX3, ATO-340HX3, ATO-540HX3

INDOOR

ATI-240HX3, ATI-340HX3, ATI-540HX3

Summary of content (6 pages)

PAGE 1
COMMERCIAL-GRADE RESIDENTIAL GAS WATER HEATERS PROLINE® XE CONDENSING TANKLESS WITH X3® SCALE PREVENTION TECHNOLOGY INDOOR ATI-240HX3, ATI-340HX3, ATI-540HX3 An expert in both water heating and treatment, A. O. Smith is uniquely qualified to combine the two technologies in a product designed to revolutionize tankless water heating. Our new condensing gas tankless line features X3 Technology that extends life on the unit up to three times longer than traditional/unprotected models.
PAGE 2
COMMERCIAL-GRADE RESIDENTIAL GAS WATER HEATERS CONDENSING TANKLESS WITH X3® SCALE PREVENTION TECHNOLOGY Model Number Type Gas Consumption Supply Gas Pressure Approx. Dimensions in Inches Input Hot/Cold Gas Shipping UEF Maximum GPM* Connections Connection Minimum Maximum Minimum Maximum with Weight Height Width Depth Height (lbs) BTU/H BTU/H in. W.C. in. W.C. Cartridge Indoor Models ATI-240HX3-N Natural 15,000 160,000 4.0 10.5 0.94 6.
PAGE 3
COMMERCIAL-GRADE RESIDENTIAL GAS WATER HEATERS 340HX3 OUTPUT TEMP VS. GPM 540HX3 OUTPUT TEMP VS.
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17-5/8” 17-5/8” COMMERCIAL-GRADE 6-1/4” 6-1/4” 17-3/4” 7” 3” Female 3” Female 17-5/8” RESIDENTIAL GAS WATER HEATERS 6-1/4” INDOOR DIMENSIONS 11-1/4” 4” 17-3/4” 3” 17-3/4” 7” Female 4” 5-3/4” 11-1/4” 7”3” 5-3/4”11-1/4” 4” 3” Female Female 3” Female 6-1/4” 5-3/4” 17-3/4” 7” 4” 3” Female 3” Female Drain port 1-3/5” X3 cartridge 4-2/5” Drain port 1-3/5” Hot 6-3/4” X3 cartridge Drain port 4-2/5” 1-3/5” Hot 6-3/4” X3 cartridge 4-2/5” Hot 6-3/4” Hot 6-3/4” X3 cartridge 4-2/5” Hot 6-3/4” Drain
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17-5/8” COMMERCIAL-GRADE 17-5/8” 17-5/8” RESIDENTIAL GAS WATER HEATERS 17-5/8” OUTDOOR DIMENSIONS 17-3/4” 7” 4-1/2” 4-1/2” 17-3/4” 17-3/4” 7” 11-1/4” 7” 4-1/2” 11-1/4” 11-1/4” 17-3/4” 7” 4-1/2” Cold 5/8” Cold 5/8” 120 VAC 2-4/5” 120 VAC 2-4/5” Cold 5/8” Gas 5-3/4” Gas 5-3/4”120 VAC 2-4/5” Condensate drain port CondensateGas drain port 7-1/2” 5-3/4” 7-1/2” Drain port 1-3/5” Drain port 1-3/5” X3 cartridge Drain port 4-2/5” X3 cartridge Hot 6-3/4” 4-2/5” 1-3/5” Hot 6-3/4” X3 cartridge 4-2/5” Hot
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COMMERCIAL-GRADE RESIDENTIAL GAS WATER HEATERS SUGGESTED SPECIFICATION FOR ATI-540HX3 OR ATO-540HX3 The fully modulating, on-demand, condensing gas fired tankless water heater(s) shall be A. O. Smith Tankless Water Heater model ATI-540HX3 or ATO-540HX3, having a maximum input rating of 199,000 Btu/h and available in NG or LP. The heater shall have ¾ in. male NPT water and gas connections. The inlet gas supply pressures shall be 4.0 in. WC (min.) up to 10.5 in. WC (max.) for NG and 8.0 in. WC (min.