A.O. Smith ATI-340H-N Technical Documents
Contents
1. 7 180 mm 11 1 4 285 mm 4 1 2 114 mm 11 281 mm O N SU es 2 E Ele _ E E ES E N 8 Sn e E co oo T o5 x aq N 10 3 4 272 mm aay Oe VF Jn unas HOT 4 3 4 120 mm COLD 5 8 17 mm M n T 120 VAC 6 1 4 159 mm GAS 5 3 4 147 mm 2 GAS 131 mm Drain port Condensate drain port HOT 140 6 3 4 170 mm 7 1 2 189 mm 140 mm Drain port 6 152 mm COLD 6 3 4 172 mm Condensate drain port 7 7 8 199 mm Condensate drain port HOT 4 3 4 120 mm 7 1 2 189 mm 17 5 8 448 mm TA zu PE E E c E Eu ot N e TE N m A R4 ES 3 9 a go E nes a BH O a 65 I d 0 OF Or 120 VAC 6 1 4 159 mm COLD 5 8 17 mm For Technical Information call 1 877 737 2840 A O Smith Corporation reserves the right to make product changes or improvements without prior notice Page 4 of 6 AOSRG46835 Ye Smith Residential Commercial Gas Tankless Water Heaters FLOW RATE vs TEMPERATURE RISE 240H Flow Rate vs Temperature Rise Flow Rate GPM Temperature Rise F 340H Flow Rate vs Temperature Rise Flow Rate GPM Temperature2. Residential Commercial Gas Si Ith Tankless Water Heaters TANKLESS HIGH EFFICIENCY CONDENSING MODELS FEATURES ET ULTRA LOW NOx CONDENSING TECHNOLOGY PROVIDES UNPRECEDENTED 0 95 ENERGY FACTOR DURABLE HEAT EXCHANGER Primary Heat Exchanger is constructed of HRS35 a Commercial Grade Copper that is more resilient to erosion HRS35 is 25x better at heat transfer than stainless steel thus stabilizing outgoing water temperatures quicker Secondary Heat Exchanger is made of Type 316L Stainless Steel to protect against corrosion CONTINUOUS MAXIMUM FLOW RATES UP TO 10 0 GPM smith ENERGY STAR QUALIFIED 7 AVAILABLE IN NATURAL GAS OR PROPANE LP et Bisnis Ea banda USED IN BOTH RESIDENTIAL AND INDOOR MODELS ATI 240H ATI 340H ATI 540H 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 sem FACTORY INSTALLED POWER CORD INCLUDED FOR INDOOR MODELS EASY LINK UP TO 4 UNITS 540H MODELS ONLY With no additional parts or accessories needed MULTI LINK UP TO 20 UNITS 540H MODELS ONLY COMPLIES WITH LEAD FREE STANDARDS F SAFETY FEATURES AirFuel Ratio AFR Sensor OUTDOOR MODELS Exhaust amp Water Temperature Safety Control ATO 240H ATO 340H
3. ATO 540H Overheat Cut Off Fuse INTERNAL FREEZE PROTECTION SYSTEM Complies with SCAQMD POWER DIRECT VENT DESIGN Rule 1462 Exhaust 3 PVC Venting to 70 Feet or 4 PVC Venting up to 100 Feet wo Provides flexible venting with PVC CPVC or ABS Pipe for Intake and Exhaust solid core only Canadian Installations Require ULCS636 Listed PVC or CPVC Pipe for Venting Category IV Stainless Steel venting can also be used 3 D ACCESSORIES C US Pipe Cover eutralizer Ki FN joe 5 Isolation Valve Kits Concentric Termination m e 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 ANSI 221 10 3 CSA 4 3 Page 1 of 6 Revised March 2013 AOSRG46835 Residential Commercial Gas Tankless Water Heaters TANKLESS HIGH EFFICIENCY CONDENSING MODELS INPUT PRESSURE DIMENSIONS IN INCHES HOT COLD MODEL FUEL MINIMUM MAXIMUM MINIMUM MAXIMUM ENERGY MAX AND C NUMBER TYPE BTU H BTU H W C W C FACTOR GPM GAS CONN HEIGHT WIDTH DEPTH INDOOR INDOOR 20AN 15000 160000 58 105 095 66 senn 258 usa moa s Propane 13000 160000 88 140 095 66 2358 Usu se dimensions are in inches 15 150 psi Water Pressure 40 psi or above is recommended
4. Rise 540 Flow Rate vs Temperature Rise Flow Rate GPM Temperature Rise ex Set temperature 125 F 52 C or lower em e Set temperature 130 F 55 C or higher For Technical Information call 1 877 737 2840 A O Smith Corporation reserves the right to make product changes or improvements without prior notice Page 5 of 6 AOSRG46835 Residential Commercial Gas Tankless Water Heaters PRESSURE LOSS 240H 340H Pressure Loss Pressure Loss 7 7 EEERREEERREEEREREB S 45 100 100 40 35 80 80 EEEH a 2 30 I LE LIES TI o Y 9 60 HEE oy E I H H EH 2 o Ead ep pt EE dE dy tf Em g 20 Pf amp 40 SEE 5555 5555555555 5955557228 40 15 a 10 20 5 0 0 6 10 0 i Flow Rate GPM 00 10 20 30 40 50 60 70 80 90 100 ow Rate Flow Rate GPM o40H Pressure Loss 50 120 45 M 100 T 2 80 30 g TA Z 60 7 20 i UN 40 10 28 5 0 0 0 0 60 70 80 90 100 110 120 Flow Rate GPM es Set temperature 125 F 52 C
5. or lower em em Set temperature 130 F 55 C or higher Specification Water heater s shall be Model as manufactured by A Smith Water Heaters shall be a copper coil integral fin and tube construction with quick release brass or bronze waterways Heater s will be factory assembled and tested The heater shall be vented with 3 or 4 Schedule 40 PVC CPVC or ABS vent pipe or stainless steel Category III vent pipe at a distance not to exceed 70 equivalent for 3 vent or 100 equivalent for 4 vent terminating vertically or horizontally as prescribed Intake air pipe may be of such material as ABS PVC galvanized B Vent corrugated aluminum or stainless steel or Category IV stainless steel not to exceed 70 equivalent for 3 vent or 100 equivalent for 4 vent The heater s shall be controlled by an onboard solid state printed circuit board monitoring incoming and outgoing temperatures with factory installed thermistors sensing and controlling flow rate to set point temperature controlling both air and gas mixture inputs to maintain thermal combustion efficiency The heater s shall also consist of inline fusing a spark ignition and sensor system aluminized stainless steel burners an air fuel ratio sensor a hi limit temperature switch modulating and proportional gas valves a freeze protection sensor with ceramic heating blocks and an overheat cutoff fuse The water heater s shall be CSA listed exceed the energy efficiency r
6. 72mm Ed COANN D UU TN E HOT 4 3 4 120mm COLD 5 8 17 mm cuc mm Drain port 120 VAC 3 77 mm HOT 5 1 2 140 mm 6 3 4 170 mm GAS 5 3 4 147 mm Drain port 6 152 mm Condensate drain port COLD 6 3 4 172 mm 7 1 2 189 mm 120 VAC 6 7 8 174 mm Condensate drain port 7 7 8 199 mm Condensate drain port 7 1 2 189 mm HOT 4 3 4 120 mm GAS 5 7 8 147 mm 120 VAC 3 77 mm 17 5 8 448 E os c O ES o SE eS 1 25 oE VOX sre a a o6 E dO oo gt 9 2 o 5N Lh SE e N O Or For Technical Information call 1 877 737 2840 A O Smith Corporation reserves the right to make product changes or improvements without prior notice Page 3 of 6 AOSRG46835 Sm Ih Residential Commercial Gas He Tankless Water Heaters OUTDOOR MODEL 17 3 4 450 mm
7. equirements of ASHRAE 90 1b 1992 and shall comply with SCAQMD Rule 1146 2 Ultra Low NOx Standards For Technical Information call 1 877 737 2840 A O Smith Corporation reserves the right to make product changes or improvements without prior notice Page 6 of 6 www hotwater com AOSRG46835
8. for maximum flow Current numbers based on factory testing 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 For Technical Information call 1 877 737 2840 A O Smith Corporation reserves the right to make product changes or improvements without prior notice Page 2 of 6 AOSRG46835 Sm i Ih Residential Commercial Gas Te Ho Tankless Water Heaters INDOOR MODEL 17 3 4 450 mm 7 180 mm 4 101 mm 11 1 4 285 mm 4 102 mm 4 102 mm 5 3 4 147 mm Female Female mW ES f 6 1 4 15 LN 29 Ei col Sm gt lt 1 i CN e e N A 2 m o5 gt A amp E 10 3 4 2
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