TANKLESS PRODUCT GUIDE
TABLE OF CONTENTS Tankless Advantage........................................................................2 COMMERCIAL CONDENSING Simple Tankless Sizing.....................................................................3 Commercial Condensing......................................................... 37-38 Safety..............................................................................................4 Flow Rate Guide.............................................................................
HOW DOES A TANKLESS TANKLESS ADVANTAGE WATER HEATER WORK? How It Works – The Process: • The opened tap allows water to flow through the water heater. An internal water flow sensor detects this flow. • Upon flow detection, the flow sensor sends the activation signal to the computer board. 1. A hot water tap is turned on 2. The flow sensor detects the water flow 4. Water circulates through the heat exchanger 5. The heat exchanger heats the water to the designated temperature 6.
SIMPLE TANKLESS SIZING AVERAGE GROUND WATER TEMPERATURE SOUTHERN ZONE CENTRAL ZONE NORTHERN ZONE Average Ground Water Temperature: 62°F to 77°F Average Ground Water Temperature: 52°F to 61°F Average Ground Water Temperature: 37°F to 51°F Remember, these are general recommendations. Your A. O. Smith Water Heater Specialist can review your family’s needs in even greater detail to make sure the model you choose will always provide enough hot water to meet the demand.
SAFETY At A. O. Smith, we place the safety and reliability of our products above all else. By incorporating technologically advanced safety features into every model, we provide the assurance and peace of mind that can only come from an A. O. Smith quality product. Air-Fuel Ratio (AFR) Sensor A. O. Smith’s unique AFR sensor monitors and maintains proper combustion at all times.
FLOW RATE GUIDE Temperature Rise vs. Gallons per Minute Temp Rise 110U 310U/C 510U/C 140H 240H 340H 540H/P/X3 CT-199 910 30° 6.6 8.0 10.0 6.6 6.6 8.0 10.0 10.0 14.5 35° 6.6 8.0 9.3 6.4 6.6 8.0 10.0 10.0 14.5 40° 5.7 7.8 8.1 5.6 6.6 8.0 9.5 9.5 14.5 45° 5.1 6.9 7.2 5.0 6.6 7.6 8.4 8.4 13.5 50° 4.6 6.2 6.5 4.5 6.1 6.8 7.6 7.6 12.2 55° 4.2 5.7 5.9 4.1 5.5 6.2 6.9 6.9 11.1 60° 3.8 5.2 5.4 3.7 5.1 5.7 6.3 6.3 10.1 65° 3.5 4.8 5.
BASIC SIZING GUIDELINES The flow rate capacity of tankless water heaters depends on the temperature difference between the desired output and incoming water temperature. The flow rate comparison chart and table shown here summarize the flow rate charts found in the specifications of each model. A. O. Smith water heaters are sized according to the peak flow rate requirements, worst-case temperature-rise scenarios, and types of applications.
OVERCOMING HARD WATER SCALE Hard water is everywhere. In fact, more than 85% of American homes have hard water which adversely affects plumbing systems, including water piping, water fixtures and the water heating system. What is hard water and hard water scale? Water is classified as “hard” when it has a high mineral content, specifically magnesium and calcium (Ca2+ and Mg2+ ions). Hard water is not considered a health risk and these minerals generally remain dissolved in the water.
OVERCOMING HARD WATER SCALE How do I prevent hard water scale? X3 Scale Prevention Technology A. O. Smith has combined its expertise in water heating and treatment to create X3® Scale Prevention Technology. By preventing scale from ever forming, this feature extends the life of the unit three times longer than traditional tankless. This makes it the first tankless product that maintains “like-new” performance without requiring any scale-related maintenance. A. O.
DURABILITY A. O. Smith tankless products are built with commercial-grade materials to ensure durability and reliability. Commercial-Grade Copper Alloy Our commercial-grade copper is a heat-resistant copper alloy, with additive elements that give it eight times the tensile strength of regular copper. Even at high temperatures, our commercial-grade copper maintains a fine grain and high strength.
VALVES AND WATER FLOW Making true commercial-grade water heaters involves more than just redesigning our heat exchangers—every internal component has to measure up to A. O. Smith’s commercial standards. Just like our advanced heat exchangers, the longevity and functionality of components such as our water valves and flow sensors are also of great importance.
RESIDENTIAL CONDENSING WITH X3® SCALE PREVENTION TECHNOLOGY Features No annual descaling required No scale buildup means the heater maintains like-new performance longer 3" venting up to 70 equivalent feet 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.
Dimensions 17-5/8” Model Number Clearances (inches) 17-5/8” Top Bottom Side Front ATI-540HX3-N 17-5/8” 12 12 3 4 ATO-540HX3-N 36 12 3 24 ATI-340HX3-N 12 12 3 4 6-1/4” ATO-340HX3-N 12 3 24 6-1/4” ATI-240HX3-N 6-1/4” 36 12 12 3 4 ATO-240HX3-N 36 12 3 24 17-3/4” 17-3/4” 7” 7” 3” emale 3” Female 4” 4” 17-3/4” 3” 3” 7” Female 3” Female Female 11-1/4” 11-1/4” 4” 3” Female 5-3/4”5-3/4” 11-1/4” 5-3/4” 17-5/8” Drain port 1-3/5” X3 cartridge n port 4-2/5” ” Hot 6-3/4” a
RESIDENTIAL CONDENSING WITH X3® SCALE PREVENTION TECHNOLOGY 540HX3540HX3 Output Temp Capacity Chartvs. GPM 11 10 9 Flow Rate (gpm) 8 7 6 5 4 3 2 1 0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Temperature Rise (°F) Set Temperature: 100-125°F Set Temperature: 130-160°F 340HX3340HX3 Output Temp Capacity Chart vs.
75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 160 140 120 100 80 Head (�) Pressure (psi) 540HX3 Pressure Drop 540HX3 Pressure Loss 60 40 20 0 1 2 3 4 5 6 7 8 9 10 0 Flow Rate (gpm) Set Temp: 100-125°F Max flow is 8 gpm when set temp above 125 Set Temp: 130-160°F 60 55 50 45 Pressure (psi) 40 35 30 25 20 15 10 5 0 0 1 2 3 4 5 6 7 8 130 120 110 100 90 80 70 60 50 40 30 20 10 0 Head (�) 340HX3 Pressure Drop 340HX3 Pressure Loss Flow Rate (gpm) 240HX3 Pressure Drop 240HX3 Pres
RESIDENTIAL CONDENSING WITH INTEGRATED RECIRCULATION PUMP Features Integrated recirculation pump for instant hot water EASY-LINKTM with up to 3 other 540H heaters 3" venting up to 70 equivalent feet Warranty • 15-year limited warranty on heat exchanger in residential applications • 5-year limited warranty on heat exchanger in commercial applications • 5-year warranty on all parts • Refer to hotwater.
24-7/8" (631 23-5/8" (600 540P Indoor (AT-H3P-DV) 1/2 (13 mm) RETURN 3-1/8" (79 mm) 540P 540PIndoor Indoor(AT-H3P-DV) (AT-H3P-DV) Clearances (inches) 6-1/4" (159 mm) 6-1/4" (159 mm) RETURN 3-1/8" (79 mm) GAS 5-1/8" (131 mm) COLD 6-3/4" (172 mm) GAS 5-1/8" (131 mm) 120 6-3/4" VAC 3-7/8" mm) COLD (172(174 mm) drainmm) port 120Condensate VAC 3-7/8" (174 7-7/8" (199 mm) Condensate drain port 1/2 (13 mm) 1/2 (13 mm) RETURN 4-5/8" (117 mm) GASRETURN 5-1/8"4-5/8" (131 (117 mm)mm) (131 mm) DrainGAS port 5
RESIDENTIAL CONDENSING Features Continuous maximum flow rates up to 10.0 GPM Ultra-Low NOx gas tankless water heaters 540 models can be used in residential and commercial applications EASY-LINKTM up to four 540H heaters or up to twenty 540H heaters with multi-unit controller Warranty • 15-year limited warranty on heat exchanger in residential applications • 5-year limited warranty on heat exchanger in commercial applications • 5-year warranty on all parts • Refer to hotwater.
11-1/4" (285 mm) 4" (101 mm) ∅ 4" (102 mm) Female 5-3/4" (147 mm) Exhaust 2-5/8" (65 mm) 12 12 3 ATO-540H-N 36 HOT 4-3/4" (120 mm) 12 Drain port 6-3/4" (170 mm) ATI-340H-N 12 36 12 ATI-240H-N 12 12 3 ATO-240H-N 36 12 3 12 Condensate drain port 7-1/2" (189 mm) GAS 5-7/8" (147 mm) 11-1/4" (285 mm) 120 VAC 3" (77 mm) 23-5/8" (600 mm) 17-5/8" (448 mm) HOT 4-3/4" (120 mm) Drain port 6-3/4" (170 mm) 120 VAC 6-7/8" (174 mm) HOT 4-3/4" (120 mm) HOT 5-1/2" (140 mm) 1/2 (13 mm) 1/2GAS (13
RESIDENTIAL CONDENSING 540H Output TempChart vs. GPM 540HX3 Capacity 11 10 9 Flow Rate (gpm) 8 7 6 5 4 3 2 1 0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Temperature Rise (°F) Set Temperature: 100-125°F Set Temperature: 130-160°F 340H Output Temp vs. GPM 340HX3 Capacity Chart 9 8 Flow Rate (gpm) 7 6 5 4 3 2 1 0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Temperature Rise (°F) 240H Output Temp vs.
75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 160 140 120 100 80 Head (�) Pressure (psi) 540HX3 Pressure Loss Drop 540H Pressure 60 40 20 0 1 2 3 4 5 6 7 8 9 10 0 Flow Rate (gpm) Set Temp: 100-125°F Max flow is 8 gpm when set temp above 125 Set Temp: 130-160°F 60 55 50 45 Pressure (psi) 40 35 30 25 20 15 10 5 0 0 1 2 3 4 5 6 7 8 130 120 110 100 90 80 70 60 50 40 30 20 10 0 Head (�) 340HX3 Pressure Drop 340H Pressure Loss Flow Rate (gpm) 240HX3 Pressure Drop 240H Pressure L
RESIDENTIAL CONDENSING Features Operates with 1/2" gas line Designed to fit between standard framing construction 3" venting up to 70 equivalent feet Warranty • 15-year limited warranty on heat exchanger in residential applications • 5-year limited warranty on heat exchanger in commercial applications • 5-year warranty on all parts • Refer to hotwater.
Dimensions Clearances (inches) Top ATI-140H-N 12 ATO-140H-N 36 Bottom Front view Front view 24" (609.4mm) 24 10-13/16" (274.6mm) 10-5/16" (262.2mm) 6" (152.1mm) 22-7/8 (580mm) 22-7/8 (580mm) 4 3 2-9/16" (64.8mm) 2-3/4" (70.2mm) 58.4 58.4 Front 3 Side view Side view 13-7/8" (352mm) 13-7/8" (352mm) 10" (254mm) 6-1/4" (158.5mm) 10-13/16" (274.6mm) 10" (254mm) 6-1/4" (158.5mm) 4" (102mm) 4" (102mm) 10-5/16" (262.2mm) 6" (152.1mm) 4" (102mm) 4" (102mm) 24" (609.
RESIDENTIAL NON-CONDENSING ULTRA-LOW NOX Features Gas convertible from natural gas to propane using the included conversion kit 4” category III vent up to 60 equivalent feet EASY-LINKTM up to four 510U heaters or up to twenty 510U heaters with multi-unit controller Warranty • 15-year limited warranty on heat exchanger in residential applications • 5-year limited warranty on heat exchanger in commercial applications • 5-year warranty on all parts • Refer to hotwater.
Dimensions Clearances (inches) Model Number Top Bottom Side ATI-510U 12 12 3 Front 4 ATO-510U 36 12 3 24 ATI-310U 12 12 3 4 ATO-310U 36 12 3 24 ATI-110U 12 12 3 4 ATO-110U 36 12 3 24 AT-KJr3U/K5U/D3U-IN AT-KJr3U/K5U/D3U-IN 13-3/4" (350 mm) 10" (254 mm) 13-3/4" (350 mm) 10" (254 mm) 1-3/4" (45 mm) 1-3/4" (45 mm) 1-3/8" (36 mm) 2-1/4" (58 mm) 2-1/4" (58 mm) 3-5/8"(93 mm) 1-3/8" (36 mm) 21-1/2" (545 mm) 21-1/2" (545 mm) 20-1/2" (520 mm) 20-1/2" (520 mm) 3-5/8"(93 mm)
RESIDENTIAL NON-CONDENSING ULTRA-LOW NOX 510U Output vs. GPM 510U: Flow Rate vs. Temp Temperature Rise 11 10 Flow Rate (gpm) 9 8 7 6 5 4 3 2 1 0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 110 120 Temperature Rise (°F) Set Temperature: 100-125°F Set Temperature: 130-160°F 310UFlow Output vs. GPM 310U: Rate vs.Temp Temperature Rise 9 8 Flow Rate (gpm) 7 6 5 4 3 2 1 0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 85 90 95 100 Temperature Rise (°F) 110U Output vs.
55 50 45 Pressure (psi) 40 35 30 25 20 15 10 5 0 0 1 2 3 4 5 6 7 8 9 10 120 110 100 90 80 70 60 50 40 30 20 10 0 Head ( ) PressureLoss Drop 510U510U Pressure Flow Rate (gpm) Tolerance is within ± 10% 60 55 50 Pressure (psi) 45 40 35 30 25 20 15 10 5 0 0 1 2 3 Tolerance is within ± 10% 4 5 6 7 8 130 120 110 100 90 80 70 60 50 40 30 20 10 0 Head ( ) 310U Pressure Loss Drop 310U Pressure Flow Rate (gpm) PressureLoss Drop 110U110U Pressure 100 40 90 35 80 30 70 25 60
RESIDENTIAL NON-CONDENSING CONCENTRIC VENT Features Installations are simple and flexible with contractor preferred concentric venting Venting runs up to 43 equivalent feet Gas convertible from natural gas to propane using the included conversion kit Easy-LinkTM up to four 510C heaters or up to twenty 510C heaters with multi-unit controller Warranty • 15-year limited warranty on heat exchanger in residential applications • 5-year limited warranty on heat exchanger in commercial applications • 5-year warrant
Model Number Top ATI-510C-N 5-7/16” (137.7 mm) 5-7/16” (137.7 mm) Dimensions Clearances (inches) Bottom Side Front 12 12 3 4 12 12 3 4 view TopTop view ATI-310C-N 13-3/4” (350 mm) 13-3/4” (350 mm) (266.5 mm) 10-1/2”10-1/2” (266.5 mm) (137.7 mm) 5-7/16”5-7/16” (137.7 mm) Multi-Unit Controller* (100112691) *Only available for 510C 19-1/2” (495.7 mm) 19-1/2” (495.7 mm) SideSide viewview 7-9/16” (192.3 mm) 4-1/4” 5-11/16” (145mm) Front view Front view 7-9/16” 5-11/16” (192.
RESIDENTIAL NON-CONDENSING CONCENTRIC VENT 510C Output vs. Rise GPM 510C: Flow Rate vs. Temp Temperature 11 10 9 Flow Rate (gpm) 8 7 6 5 4 3 2 1 0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 Temperature Rise (°F) Set Temperature: 100-125°F Set Temperature: 130-160°F 310C Output vs. Rise GPM 310C: Flow Rate vs.
55 50 45 Pressure (psi) 40 35 30 25 20 15 10 5 0 0 1 2 3 4 5 6 7 8 9 10 120 110 100 90 80 70 60 50 40 30 20 10 0 Head ( ) 510C Pressure Drop 510C Pressure Loss Flow Rate (gpm) Tolerance is within ± 10%.
RESIDENTIAL COMBI BOILERS Domestic Hot Water and Space Heating How it Works: • A hot water tap is opened causing incoming potable water to flow through the flat plate heat exchanger. • Heated boiler water, supplied from the fire tube heat exchanger, flows through a diverter valve and into the flat plate heat exchanger where it prioritizes heating the incoming domestic water to the designated set point temperature.
COMBI BOILER FLOW RATE GUIDE Temperature Rise vs. Gallons per Minute Temperature Rise 40°F 45°F 50°F 55°F 60°F 65°F 70°F 75°F 80°F 85°F 90°F 95°F 100°F ACB-110S-N 5.1 4.5 4.0 3.7 3.4 3.1 2.9 2.7 2.5 2.4 2.2 2.1 2.0 ACB-150S-N 6.9 6.1 5.5 5.0 4.6 4.2 3.9 3.7 3.5 3.2 3.1 2.9 2.8 ACB-199S-N 9.2 8.2 7.4 6.7 6.1 5.7 5.3 4.9 4.6 4.3 4.1 3.9 3.7 Innovative Design Fire tube heat exchanger with a higher rated MAWP of 50 psi reduces unit pressure drop.
PROLINE® XE RESIDENTIAL COMBI BOILER Features Indoor installation only Modulating burner with 10:1 turndown ratio DHW flow rate up to 4.8 gpm at 77°F temperature rise 50 PSI max pressure (boiler); 150 PSI max pressure (DHW) Warranty • 10-year limited warranty on heat exchanger in residential applications • 5-year warranty on all parts • Refer to hotwater.
Dimensions BOTTOM BOTTOM FRONT FRONT BOTTOM 12-3/4” FRONT 17-1/4” 17-1/4” BOTTOM 12-3/4”5” FRONT 17-1/4” 8-3/4” 17-1/4” 12-3/4” 8-3/4” 5” 5” 8-3/4” 32-1/2” 5” 12-3/4” 8-3/4” 13-1/2” 32-1/2” 9” 13-1/2” 32-1/2” 9” 13-1/2” 32-1/2” 13-1/2” 9” 5” 14-1/2” 10-1/2” 2-3/4” 9” 5” 10-1/2” 10-1/2” BOTTOM 5” 5” 14-1/2” 2-3/4” 2-3/4” 14-1/2” 2-3/4” 14-1/2” 10-1/2” FRONT 14-3/4” 14-3/4” 14-3/4” 14-3/4” 14-3/4” 3-1/2” 3-1/2” 3-1/2” 3-1/2” 2-3/4”2-3/4” 2-3/4” 14-3/4” 14-3/4”
COMMERCIAL NON-CONDENSING Features Low NOx Emissions EASY-LINKTM up to 4 heaters or connect up to 10 heaters with a multi-unit controller Warranty • 6-year limited warranty on heat exchanger in commercial applications • 5-year warranty on all parts • Refer to hotwater.com for further warranty details Specifications Gas Consumption Input Model Number* Type ATIO-910-N Natural Inlet Gas Pressure** Minimum (BTU/H) Maximum (BTU/H) Minimum (in. W.C.) Maximum (in. W.C.) 15,000 380,000 4.0 10.
Dimensions Accessories Multi-Unit Controller (100112691) Remote Temperature Controller (100112155) 910 Output Temp vs. GPM 910 Pressure Loss 12 10 10 8 6 8 6 4 4 2 2 0 0 25 25 45 45 65 65 85 Set temperature: 145°F or lower Set temperature: 145°F or lower Set temperature: 150°F or higher Set temperature: 150°F or higher 85 105 105125 125145 TemperatureTemperature rise (°F) rise (°F) 145 25 25 20 20 15 10 50 40 40 30 30 15 10 20 5 5 0 0 0.0 50 0.0 2.
COMMERCIAL CONDENSING Features EASY-LINKTM up to 4 heaters or connect up to 20 heaters with a multi-unit controller 96% thermal efficiency Warranty • 6-year limited warranty on heat exchanger in commercial applications • 5-year warranty on all parts • Refer to hotwater.com for further warranty details Specifications Gas Consumption Input** Model Number* Type Minimum (BTU/H) Inlet Gas Pressure** Maximum (BTU/H) Minimum (in. W.C.) Maximum (in. W.C.) UEF ACT-199I-N Natural 15,000 199,000 4.0 10.
Dimensions Clearances (inches) Model Number Top Bottom Side ACT-199I-N 12 12 3 4 ACT-199O-N 36 12 3 24 11-1/4" (285 mm) 4" (101 mm) 22-1/22" (570 mm) 22-1/22" (570 mm) 24-7/8" (631 mm) 23-5/8" (600 mm) 23-5/8" (600 mm) 24-7/8" (631 mm) Intake 2-5/8" (68 mm) Exhaust 2-5/8" (65 mm) 6-1/4" (159mm) 6-1/4" (159mm) Exhaust 2-5/8" (65 mm) 11-1/4" (285 mm) 5-3/4" (147 mm) ∅ 4" (102 mm) Female 5-3/4" (147 mm) Intake 2-5/8" (68 mm) ∅ 4" (102 mm) Female 17-3/4" (450 mm) 17-3/4" (450 mm) 7
COMMERCIAL TANKLESS RACK SYSTEM Commercial tankless rack systems allow the power of tankless technology to be customized with unprecedented flexibility. A. O. Smith offers wall mount, free standing and back-to-back configurations with easy options to integrate storage when needed. For jobs that require more than six units, custom solutions are available.
MULTI-UNITS SYSTEMS A. O. Smith tankless water heaters have the capability to link multiple heaters together to act as a system. The primary heater is rotated to ensure even operation of all heaters. The 510U/C, 540H, CT-199, and 910 models can EASY-LINKTM up to four units using included communication cables.
TANKLESS APPLICATION DIAGRAMS A. O. Smith tankless water heaters can be used in a wide variety of applications. Whether used in recirculation systems, in conjunction with storage tanks or with heating applications, our commercial units are built to provide continuous hot water when sized appropriately for your home’s needs. Local codes dictate proper compliance. Basic Installation (excluding 540P) Hot Water Return Hot Water to Fixtures Gas Supply Cold Water Supply Expansion Tank 1.
MULTIPLE UNITS Multiple Units with EASY-LINKTM Hot Water to Fixtures Hot Water Return Gas Supply Cold Water Supply Expansion Tank 1. Recirculation pump shall be sized for 2-4 gpm per activated heater (4-8 gpm for 910) 2. Recirculation pump shall be controlled by an aquastat. The minimum suggested differential should be 10°F 3. The automatic air should be installed at the highest location of the system in accordance with the manufacturer’s instructions.
MULTI-UNITS Multiple Unit with Storage Hot Water to Fixtures Gas Supply T-1 Hot Water Return P-2 T-2 Cold Water Supply Expansion Tank P-1 1. Tank circulation pump, P-1, should be controlled by tank aquastat, T-1. 2. Tank aquastat, T-1, should be set 20°F below water heater set temperature. 3. Pump P-1 should be sized to provide flow necessary to heat the storage tank. Refer to the water heater’s spec sheet for pressure drop curves. All application diagrams shown are concept drawings only.
SOLAR TANKLESS BACK UP COLLECTOR SENSOR TANKLESS WATER HEATER H SOLAR COLLECTOR TEMPERED HOT WATER C GAS SUPPLY T HOT WATER RETURN FIELD SUPPLIED PUMP AQUASTAT TANKLESS SUPPLY LINE COLD WATER INLET TANK SENSOR SOLAR CONTROL STORAGE TANK NOTES: 1. Ensure field supplied tank aquastat is in top 1/3 section of the tank. 2. Set tank aquastat 10°F lower than tankless unit set point. 3.
VENTING AND ACCESSORIES erticalSolar Venting: Termination TanklessFlat BackRoof Up Diagrams 4” Rooftop Termination Models 110U, 310U, 510U 1 1 3 Qty.
VENTING DIAGRAMS 4” Sidewall Termination (Please check the wall thickness for proper installation) Models 110U, 310U, 510U (Please check the wall thickness for proper installation) 2 Kit Part Number: 100112726 1 3 Qty. 4” Combustible Sidewall Termination 1 100112419 4" Sidewall Hood Terminator 1 2 100112732 4" Wall Thimble (4.0"-7.0") 1 3 100112400 4" 90 degree Elbow 1 4 100112399 4" Female-Female Adaptor 1 4 1 2 3 Models 110U, 310U, 510U Qty.
Up & Out Standard Installation Combustible Wall VENTING DIAGRAMS 4” Sidewall Termination (With Condensate Trap) (Please check the wall thickness for proper installation) Models 110U, 310U, 510U Qty. 4” Combustible Sidewall Termination (With Condensate Trap) 3 1 Kit Part Number: 100112775 1 4 100112419 4" Sidewall Hood Terminator 2 100112732 4” Wall Thimble (4.0”-7.
DIRECT VENT, CONCENTRIC SIDEWALL TERMINATION 910 Model 1 Model 910 5-10” Sidewall Thickness Direct Vent, Concentric Termination Kit Part Number: 100112606 3 1 100112604 Concentric Intake/Exhaust Kit 1 2 100112597 Universal Appliance Adapter 1 3 NA 5” Aluminum Flex 1 4 100112186 Direct Vent Conversion Kit 12-18” Sidewall Thickness Direct Vent, Concentric Termination 2 4 Kit Part Number: 100112601 Qty. 1 Qty.
DIRECT VENT, CONCENTRIC SIDEWALL TERMINATION 5” Sidewall Termination Model 910 2 3 Kit Part Number: 100112729 1 4 Qty. 5" Combustible Sidewall Termination 1 100112594 5" Sidewall Hood Terminator 1 2 100112734 5" Wall Thimble (4.0"-7.0") 1 3 100112587 5" 90 degree Elbow 1 4 100112599 5" Female-Female Adaptor 1 1 2 3 Model 910 Qty.
DIRECT VENT, CONCENTRIC SIDEWALL TERMINATION 5” Sidewall Termination (With Condensate Traps) 2 Model 910 5" Combustible Sidewall Termination (With Condensate Trap) 3 4 1 Kit Part Number: 100112777 Qty. 1 100112594 5" Sidewall Hood Terminator 1 2 100112734 5" Wall Thimble (4.0"-7.0") 1 3 100112587 5" 90 degree Elbow 1 4 100112597 5" Universal Appliance Adaptor 1 1 2 3 Model 910 5" Non-Combustible Sidewall Termination (With Condensate Trap) Kit Part Number: 100112778 Qty.
DIRECT VENT, CONCENTRIC SIDEWALL TERMINATION 5” Rooftop Termination 1 Model 910 7 3 Qty. 5” Flat Roof Termination 2 Kit Part Number: 100112730 7 1 100112596 5” Extreme Weather Rain Cap 1 2 100112590 5” Storm Collar 1 3 100112592 5” Flat Roof Flashing 1 4 100112591 5” Vertical Firestop 1 5 100112587 5” 90 degree Elbow 2 6 100112597 5” Universal Appliance Adaptor 1 7 Refer to Accessories Chart Straight Pipe TBD 1 4 7 3 2 5 7 6 4 Model 910 Qty.
CONCENTRIC VENT SERIES Horizontal Installation Horizontal Installa�on Models 310C, 510C 1 Standard Sidewall Kits* 2 Straight Pipe 100322374 (11.5") 100322375 (21") 1 100266133 (10") 100266134 (19.5") 100266135 (39") 3 Elbow 100266119 (45°) 100266132 (87°) 4 Condensate Collector 100266139 5 Condensate Trap 100266140 6 Flue Adapter 100322379 *This kit includes one 87° elbow and Flue Adapter.
CONCENTRIC VENT SERIES Ver�cal Installation Installa�on Vertical Vertical Installation Models 310C, 510C Roof Termination (38") 2 100305170 Roof Termination (38") 100266118 100266136 (1/12 to 6/12 pitch) 2 3 100266137 (8/12 to 16/12 pitch) Tile/Shingle Roof Flashing 100266138 (6/12 to 12/12 pitch) 100266187 (Flat Roof) 100266133 (10") 4 Straight Pipe 100266134 (19.
VENTING COMPONENTS Simple Leak-Proof Gasketed Connections – No Sealant Required. High Quality – Category III / IV Stainless Steel. Versatile – Vertical and Horizontal Terminations. Convenient – Vent Kits Available. UL Listed. All Connections have Heat-Resistant Rubber Gaskets.
VENTING COMPONENTS Nova Vent Part # Description Nova Vent Part # Termination Description Intake Hood (Galvanized) 100112547 4” Termination Tee 100112545 3” 100112595 5” Termination Tee 100112546 4” 100112419 4”Exhaust Sidewall Vent Terminator (Hood) 100112547 5” 100112594 5”Exhaust Sidewall Vent Terminator (Hood) 100112415 4” Rain Cap 100112548 4” Extreme Weather Rain Cap 100112421 5.0” to 10.0” 3” Intake, 4” Exhaust 100112596 5” Extreme Weather Rain Cap 100112420 12.0” to 18.
Recess Box Retrofit New Construction 100112188 100324434 100112190 100112718 100187904 Pipe Cover 100112691 Multiple Unit Controller x x x x ATIO-910 ATO-540H/P ATI-540H/P ATO-340 ATI-340 ATO-240 ATI-240 ATO-140 ATI-140 ATO-510U x x x x x x x x x x x x x x x x x* x* x x* x* x* x x x* x* x x x x x x x x x x 100112155 100209924 ATI-510U ATI-510C ATO-310U ATI-310U ATI-310C x x Remote Temperature Controller x x x x 100112183 ATO-540HX3 100266729,
PRODUCT OVERVIEW I = Indoor O= Outdoor Connection: Venting Intake EASY-LINKTM (EL) Gas/Water Multi-Unit (MU) Exhaust Power Temperature GPM (Max) Per Unit Uniform Energy Factor Max BTU/h Dimension/ Weight 310C Series Ideal for 2 to 3 bath homes 3/4” Gas/Water 120 VAC 3” / 5” Concentric, 43’ Max N/A 100 - 140 °F 8.0 0.81 190,000 H= 20-1/2” W= 13-3/4” D= 11-1/2” 51 lbs Well suited for light commercial applications.
PRODUCT OVERVIEW Connection: Gas/Water Power Venting Intake Exhaust EASY-LINKTM (EL) Multi-Unit (MU) Temperature GPM (Max) Per Unit Uniform Energy Factor Max BTU/h Dimension/ Weight 1/2” Gas 3/4” Water 120 VAC Intake & Exhaust 3”, 70’ Max, 5 elbow Max OR 4”, 100’ Max, 5 elbow Max N/A 100 - 140 °F 7.0 I: 0.90 O: 0.91 120,000 H = 22-7/8” W = 13-7/8” D = 10-3/4” 50 lbs 3/4” Gas/Water 120 VAC Intake & Exhaust 3”, 70’ Max, 5 elbow Max OR 4”, 100’ Max, 5 elbow Max N/A 100 - 140 °F 6.6 I: 0.
500 Tennessee Waltz Pkwy Ashland City, TN 37015 Toll Free: 877.737.2840 A. O. Smith Corporation | © March 2022 | hotwater.
