TANKLESS PRODUCT GUIDE
SAVE ENERGY. Energy-efficient, plentiful, and endless supply of hot water. SAVE SPACE. Compact size and wall-mounted to free up valuable floor space. SAVE MONEY. The smart choice that will save you a substantial amount of energy. 1 A. O. Smith has delivered innovative hot water solutions for more than 80 years. A. O. Smith’s selection of residential and commercial tank-type, tankless, hybrid water heaters, boilers and storage tanks is unmatched for quality and diversity.
TANKLESS ADVANTAGE HOW IT WORKS – THE PROCESS: • A hot water tap is opened. • 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. • The computer automatically ignites the burner. • As water flows through the heat exchanger, it absorbs heat from the burner. • By the time the water exits the heater, it has reached the designated set temperature.
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.
DURABILITY HEAT EXCHANGER WITH COMMERCIAL-GRADE COPPER Only A. O. Smith incorporates true commercial-grade heat exchangers in our tankless heaters (510, 510C, 510U, 540H, 540P, CT-199 and 910 non-ASME models). All aspects of the heat exchanger are designed to add the durability and reliability that is vital to any successful commercial organization or business.
WATER VALVES 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.
SECONDARY HEAT EXCHANGER 316L STAINLESS STEEL (CONDENSING MODELS ONLY) The secondary condensing heat exchanger is made of high-quality 316L stainless steel. This is where the rest of the heat transfer occurs. Due to the lower temperature acidic condensation occurs, and stainless steel is required in order to avoid corrosion.
WATER FLOW Condensation can build up over time in any heat exchanger, causing damage and premature leaks. A. O. Smith’s commercial models (910 series) include condensation reduction features that safeguard against these types of damaging effects. Better Water Pathway Design By redesigning and redirecting the flow of water, the temperature of the heat exchanger drum and finned coils stay elevated above dew point, making it much more difficult for condensation to build.
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.
FLOW RATE GUIDE Temperature Rise vs. Gallons per Minute Temp Rise 110/U/C 310/U/C 510/U/C 140H 240H 340H 540H/P 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.
SIMPLE TANKLESS SIZING TANKLESS MODELS GROUND WATER TEMPERATURE FACTOR The temperature of incoming ground water (cold water inlet temperature) varies greatly throughout the U.S. and also fluctuates with the changing of the seasons. The temperature of water as it enters the water heater will determine the amount of “temperature rise” required to achieve the desired hot water outlet temperature (120°F is recommended).
110 SERIES NON-CONDENSING The 110 Series is great for apartments, one bath homes in cold climates, condos and summer cabins. A remote control is included as a standard feature. 11 ATO-110-N ATI-110-N Specifications Model Number* ATI-110-N ATO-110-N Model Number* Type Natural Natural Gas Consumption Input Minimum Maximum (BTU/H) (BTU/H) 19,500 140,000 19,500 140,000 Maximum Hot/Cold Gas GPM Connections Connection Inlet Gas Pressure** Minimum Maximum (in. W.C.) (in. W.C.) 4.0 10.5 4.0 10.5 UEF 0.
Specifications Indoor and Outdoor Installation Options Warranty Power Vent or Power Direct Vent Design • 15-year limited warranty on heat exchanger in residential applications. Low NOx Emissions • 5-year limited warranty on heat exchanger in commercial applications. 4” Category III Vent Flow Rate up to 6.6 GPM • 5-year warranty on all parts. • Values based on factory testing. 0.4 GPM required for continuous fire after initial ignition • Refer to hotwater.
310 SERIES NON-CONDENSING The 310 features a max flow rate of 8.0 gpm, providing enough hot water for a home with up to three showers at the same time. A remote control is included as a standard feature. 13 ATO-310-N ATI-310-N Specifications Model Number* ATI-310-N ATO-310-N Model Number* Type Natural Natural Gas Consumption Input Minimum Maximum (BTU/H) (BTU/H) 11,000 190,000 11,000 190,000 Maximum Hot/Cold Gas GPM Connections Connection Inlet Gas Pressure** Minimum Maximum (in. W.C.) (in. W.C.
Specifications Indoor and Outdoor Installation Options Warranty Power Vent or Power Direct Vent Design • 15-year limited warranty on heat exchanger in residential applications. Low NOx Emissions • 5-year limited warranty on heat exchanger in commercial applications. 4” Category III Vent Flow Rate up to 8.0 GPM • 5-year warranty on all parts. • Values based on factory testing. 0.4 GPM required for continuous fire after initial ignition • Refer to hotwater.
510 SERIES NON-CONDENSING The 510 series is well suited for residential/commercial applications such as small restaurants and beauty salons. Utilizing commercial grade copper alloy for the heat exchanger tubing, the 510 series is also suitable for heavier residential usages such as combination space heating and domestic recirculation systems. A remote control is included as a standard feature.
Specifications Indoor and Outdoor Installation Options Easy-Link up to 4 heaters Power Vent or Power Direct Vent Design Warranty Low NOx Emissions • 15-year limited warranty on heat exchanger in residential applications. 4” Category III Vent • 5-year limited warranty on heat exchanger in commercial applications. Flow Rate up to 10.0 GPM • Values based on factory testing. 0.4 GPM required for continuous fire after initial ignition • 5-year warranty on all parts. • Refer to hotwater.
110C SERIES NON-CONDENSING The 110C Simplicity Series is fuel convertible out of the box and easily installs using contractor preferred concentric venting. Great for apartments, one bath homes in cold climates, condos and summer cabins. 17 ATI-110C-N Specifications Gas Consumption Input Model Number* ATI-110C-N Model Number* ATI-110C-N Inlet Gas Pressure** Type Minimum (BTU/H) Maximum (BTU/H) Minimum (in. W.C.) Maximum (in. W.C.) UEF Natural 15,000 140,000 4.0 10.5 0.81 Maximum GPM 6.
Specifications Installations are simple and flexible with contractorpreferred concentric venting Water Pressure: 15-150 psi Long venting runs up to 43 feet and operates in altitudes up to 10,100 feet • 15-year limited warranty on heat exchanger in residential applications. Flow Rate up to 6.6 GPM • Values based on factory testing. 0.4 GPM required for continuous fire after initial ignition 5-7/16” (137.7 mm) 5-7/16” (137.7 mm) • 5-year limited warranty on heat exchanger in commercial applications.
310C SERIES NON-CONDENSING The 310C Simplicity Series is fuel convertible out of the box and easily installs using contractor preferred concentric venting. It generates a max flow rate of 8.0 gpm, providing enough hot water to run three showers at the same time.
Specifications Installations are simple and flexible with contractorpreferred concentric venting Water Pressure: 15-150 psi • Pressure Only Relief Valve Requires (Min 190,000 btu/h, 150 psi) Long venting runs up to 43 feet and operates in altitudes up to 10,100 feet • 40 psi or above recommended for max. flow Warranty Gas convertible from natural gas to propane using the included conversion kit • 15-year limited warranty on heat exchanger in residential applications. Flow Rate up to 8.
510C SERIES NON-CONDENSING The 510C Simplicity Series is fuel convertible out of the box and easily installs using contractor preferred concentric venting. It is well suited for residential/commercial applications such as small restaurants and beauty salons. Utilizing commercial grade copper alloy for the heat exchanger tubing, the 510C series is also suitable for heavier residential usages such as combination space heating and domestic recirculation systems.
Specifications Installations are simple and flexible with contractorpreferred concentric venting Water Pressure: 15-150 psi • Pressure Only Relief Valve Requires (Min 199,000 btu/h, 150 psi) Long venting runs up to 43 feet and operates in altitudes up to 10,100 feet • 40 psi or above recommended for max. flow Easy-Link up to 4 heaters or connect up to 20 heaters with a Multi-Unit Controller Flow Rate up to 10 GPM Warranty • Values based on factory testing. 0.
110U SERIES NON-CONDENSING The 110U Series is great for apartments, one bath homes in cold climates, condos and summer cabins. Indoor models include an integrated temperature controller. A remote control is included as a standard for outdoor models. Complies with SCAQMD Rule 1146.2 and other air quality management districts with similar NOx Emission requirements of 14 ng/J or 20 PPM.
Specifications Indoor and Outdoor Installation Options Water Pressure: 15-150 psi Power Vent or Power Direct Vent Design • Pressure Only Relief Valve Requires (Min 140,000 btu/h, 150 psi). Ultra-Low NOx Emissions • 40 psi or above recommended for max. flow 4” Category III Vent Warranty Gas convertible from natural gas to propane using the included conversion kit • 15-year limited warranty on heat exchanger in residential applications. Flow Rate up to 6.
310U SERIES NON-CONDENSING The 310U features a max flow rate of 8.0 gpm providing enough hot water to run three showers at the same time. Indoor models include an integrated temperature controller. A remote control is included as a standard for outdoor models. Complies with SCAQMD Rule 1146.2 and other air quality management districts with similar NOx Emission requirements of 14 ng/J or 20 PPM.
Specifications Indoor and Outdoor Installation Options Water Pressure: 15-150 psi Power Vent or Power Direct Vent Design • Pressure Only Relief Valve Requires (Min 190,000 btu/h, 150 psi). Ultra-Low NOx Emissions • 40 psi or above recommended for max. flow 4” Category III Vent Warranty Gas convertible from natural gas to propane using the included conversion kit • 15-year limited warranty on heat exchanger in residential applications.
510U SERIES NON-CONDENSING The 510U series is well suited for residential/commercial applications such as small restaurants and beauty salons. Indoor models include an integrated temperature controller. A remote control is included as a standard feature for outdoor models. Utilizing commercial-grade copper alloy for the heat exchanger tubing, the 510U series is also suitable for heavier-residential usages such as combination space heating and domestic recirculation systems.
Specifications Indoor and Outdoor Installation Options Water Pressure: 15-150 psi Power Vent or Power Direct Vent Design • Pressure Only Relief Valve Requires (Min 190,000 btu/h, 150 psi). Ultra-Low NOx Emissions • 40 psi or above recommended for max. flow 4” Category III Vent Warranty Gas convertible from natural gas to propane using the included conversion kit • 15-year limited warranty on heat exchanger in residential applications.
140H SERIES The 140H Series is a high efficiency, ultra-low NOx condensing model with up to 0.91 Uniform Energy Factor, allowing for the use of 3”or 4” PVC venting or Category IV stainless steel. Indoor models have an integrated temperature controller and outdoor models include a remote control as a standard feature.
Specifications Indoor and Outdoor Installation Options Warranty Power Vent or Power Direct Vent Design • 15-year limited warranty on heat exchanger in residential applications. Ultra-Low NOx Emissions • 5-year limited warranty on heat exchanger in commercial applications. Flow Rate up to 6.6 GPM • Values based on factory testing. 0.4 GPM required for continuous fire after initial ignition • 5-year warranty on all parts. • Refer to hotwater.
240H SERIES The 240H series offers high efficiency Ultra-Low NOx condensing technology allowing for the use of 3” PVC venting and has 0” clearance to combustibles. Indoor models have an integrated temperature controller and outdoor models include a remote control as a standard feature.
Specifications Indoor and Outdoor Installation Options Warranty Power Vent or Power Direct Vent Design • 15-year limited warranty on heat exchanger in residential applications. Ultra-Low NOx Emissions • 5-year limited warranty on heat exchanger in commercial applications. Flow Rate up to 6.6 GPM • Values based on factory testing. 0.4 GPM required for continuous fire after initial ignition • 5-year warranty on all parts. • Refer to hotwater.
0H SERIES The 340H series offers high efficiency Ultra-Low NOx condensing technology allowing for the use of 3” PVC venting and has 0” clearance to combustibles. Indoor models are certified up to 10,100 ft. altitude. Indoor models have an integrated temperature controller and outdoor models include a remote control as a standard feature.
Specifications Indoor and Outdoor Installation Options Warranty Power Vent or Power Direct Vent Design • 15-year limited warranty on heat exchanger in residential applications. Ultra-Low NOx Emissions • 5-year limited warranty on heat exchanger in commercial applications. Flow Rate up to 8 GPM • Values based on factory testing. 0.4 GPM required for continuous fire after initial ignition • 5-year warranty on all parts. • Refer to hotwater.
540H SERIES Complies with Ultra-Low NOx regulations. Utilizing commercial-grade copper alloy for the heat exchanger tubing, the 540H is also suitable for heavier residential usages such as combination space heating and domestic recirculation systems. Indoor models have an integrated temperature controller and outdoor models include a remote control as a standard feature. Indoor models are certified up to 10,100 ft. altitude.
Specifications Easy-Link up to 4 heaters or connect up to 20 heaters with a Multi-Unit Controller Indoor and Outdoor Installation Options Power Vent or Power Direct Vent Design Warranty Ultra-Low NOx Emissions Flow Rate up to 10 GPM • 15-year limited warranty on heat exchanger in residential applications. • Values based on factory testing. 0.4 GPM required for continuous fire after initial ignition • 5-year limited warranty on heat exchanger in commercial applications.
540P SERIES The 540P Series integrates a recirculation pump to provide instant hot water in residential applications with dedicated recirculation lines. The pump is easily controlled with a simple user interface and multiple pump settings allow you to customize pump operation to meet your needs while maximizing heater efficiency. Indoor models have an integrated temperature and pump controller and outdoor models include a remote control as a standard feature.
Specifications Indoor and Outdoor Installation Options Easy-Link with up to 3 other 540H heaters Power Vent or Power Direct Vent Design Warranty Ultra-Low NOx Emissions • 15-year limited warranty on heat exchanger in residential applications. Integrated recirculation pump • 5-year limited warranty on heat exchanger in commercial applications. Flow Rate up to 10 GPM • Values based on factory testing. 0.4 GPM required for continuous fire after initial ignition • 5-year warranty on all parts.
910 SERIES The 910 Series, specifically designed for heavy-duty applications, is the largest A. O. Smith tankless heater yet and the most powerful (14.5 GPM max) in the tankless industry. The 910 Series is suitable for commercial applications (hotels, restaurants, government, convalescent homes, etc.) that require high demand and the most durable of heaters.
Specifications Indoor and Outdoor Installation Options Easy-Link up to 4 heaters or connect up to 10 heaters with a Multi-Unit Controller Power Vent or Power Direct Vent Design Warranty Low NOx Emissions • 6-year limited warranty on heat exchanger in commercial applications. Flow Rate up to 14.5 GPM • Values based on factory testing. 0.4 GPM required for continuous fire after initial ignition • 5-year warranty on all parts. • Refer to hotwater.
CT-199 SERIES The CT-199 is well suited for commercial applications such as small restaurants and beauty salons. Complies with Ultra-Low NOx regulations. Utilizing commercialgrade copper alloy for the heat exchanger tubing, the CT-199 is also suitable for combination space heating and domestic recirculation systems. Indoor models have an integrated temperature controller and outdoor models include a remote control as a standard feature. Indoor models are certified up to 10,100 ft. altitude.
Specifications Indoor and Outdoor Installation Options Easy-Link up to 4 heaters or connect up to 20 heaters with a Multi-Unit Controller Power Vent or Power Direct Vent Design 96% thermal efficiency Ultra-Low NOx Emissions Warranty Flow Rate up to 10 GPM • 6-year limited warranty on heat exchanger in commercial applications. • Values based on factory testing. 0.4 GPM required for continuous fire after initial ignition Water Pressure: 15-150 psi • 5-year warranty on all parts.
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- UNIT 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 510/U/C, 540H, CT-199, and 910 models can Easy-Link up to four units using included communication cables.
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 GPM Flow Rates 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 110 model 5.1 4.5 4.0 3.7 3.4 3.1 2.9 2.7 2.5 2.4 2.2 2.1 2.0 150 model 6.9 6.1 5.5 5.0 4.6 4.2 3.9 3.7 3.5 3.2 3.1 2.9 2.8 199 model 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 COMBI BOILER COMBI BOILER The ProLine® XE combi boiler is designed for residential domestic hot water and space heating applications. It’s made with durable commercial-grade materials such as a stainless steel fire tube, brass connections and a brazed stainless steel flat plate heat exchanger. Designed with the contractor in mind, an easy-toremove cover and advanced set up wizard function make the ProLine® XE combi boiler simple to install and maintain.
Specifications Indoor Installation Only Warranty Meets Ultra-Low NOx requirements • 10-year limited warranty on heat exchanger in residential applications. Modulating burner with 10:1 turndown ratio • 5-year warranty on all parts. Power Direct Vent Design • Refer to hotwater.com for further warranty details DHW flow rate up to 4.
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.
MULTIPLE UNITS Multiple Units with Easy-Link 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 DIAGRAMS (EXAMPLES) 4” Sidewall Termination (Please check the wall thickness for proper installation) 2 1 3 Models 110/U, 310/U, 510/U Qty. 4” Combustible Sidewall Termination Kit Part Number: 4 100112726 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 1 2 3 Models 110/U, 310/U, 510/U 4" Non-Combustible Sidewall Termination Kit Part Number: 100112767 53 Qty.
Up Out Standard 4”& Sidewall Termination Installation Combustible Wall (With Condensate Trap) (Please check the wall thickness for proper installation) 3 1 Models 110/U, 310/U, 510/U Qty. 4” Combustible Sidewall Termination (With Condensate Trap) 4 2 Kit Part Number: 100112775 1 100112419 4" Sidewall Hood Terminator 1 2 100112732 4” Wall Thimble (4.0”-7.
DIRECT VENT, CONCENTRIC SIDEWALL TERMINATION 110, 310, 510 Models 1 Models 110, 310, 510 5-10” Sidewall Thickness Direct Vent, Concentric Termination Kit Part Number: 100112421 3 1 100112550 Concentric Intake/Exhaust Kit 1 2 100112549 Universal Appliance Adaptor 1 3 NA 3” Aluminum Flex 1 4 100112184 Direct Vent Conversion Kit 1 12-18” Sidewall Thickness Direct Vent, Concentric Termination 2 Kit Part Number: 100112420 4 910 Model 100112551 Concentric Intake/Exhaust Kit 1 2 10011254
Vertical Venting: Flat Roof Termination 4” Rooftop Termination Models 110/U, 310/U, 510/U 1 3 Qty.
5” Sidewall Termination 2 Model 910 Qty. 5" Combustible Sidewall Termination 3 1 4 Kit Part Number: 100112729 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 5" Non-Combustible Sidewall Termination Kit Part Number: 100112768 57 Qty.
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.
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 7 4 3 2 7 5 4 6 7 Model 910 Qty.
CONCENTRIC VENT SERIES Horizontal Installa�on 1 Horizontal Installation Models 110C, 310C, 510C 1 Standard Sidewall Kits* 2 Straight Pipe 100266115 (11.5") 100266117 (21") 100266133 (10") 100266134 (19.
CONCENTRIC VENT SERIES Vertical Installation Models 110C, 310C, 510C Ver�cal Installa�on Roof Termination (38") 1 100266118 100266136 (1/12 to 6/12 pitch) 100266137 (8/12 to 16/12 pitch) Tile/Shingle Roof Flashing 2 100266138 (6/12 to 12/12 pitch) 100266187 (Flat Roof) 100266133 (10") 1 3 Straight Pipe 4 Pipe Hangers 5 Elbow 6 Condensate Trap 100266139 7 Condensate Collector 100266140 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.
NOVA VENT PART # DESCRIPTION Termination NOVA VENT PART # DESCRIPTION Intake Hood (Galvanized) 100112547 4” Termination Tee 100112595 5” Termination Tee 100112419 4”Exhaust Sidewall Vent Terminator (Hood) 100112594 5”Exhaust Sidewall Vent Terminator (Hood) Direct Vent, Concentric Sidewall Termination Kit 100112415 4” Rain Cap Includes : DV Conversion Kit, Concentric Termination, Universal Adaptor 3-in-1, Aluminum Flex and Gear Clamp 100112548 4” Extreme Weather Rain Cap 100112596 5” Ext
ATI -1 1 ATI 0C -1 1 0 ATO /U -1 1 ATI 0/U -3 1 ATI 0C -3 1 0 ATO /U -3 1 ATI 0/U -5 1 0C ATI -5 1 0 ATO /U -5 1 ATI 0/U -1 4 ATO 0 -1 4 ATI 0 -2 4 0 ATO -2 4 ATI 0 -3 4 0 ATO -3 4 ATI 0 -5 4 0 ATO H/P -5 4 ATI 0H/P O-9 10 AC T-1 99I /O ACCESSORIES ACCESSORIES 100112194 Outdoor Vent Cap 100266729, 100266730 Recess Box Standard Flange 100112188 100112187 100112190 100112601 100187904 Pipe Cover 100112691 Multiple Unit Controller x x x x x x* x* x x x x x x x x x 100112183 x x x x x*
Hard Water and Tankless Heaters Hard water can adversely affect plumbing systems, from water piping to water fixtures and even down to the water heating system. For piping and fixtures, hard water can create more pressure loss and reduce water flow. For water heaters, it can even reduce energy efficiency and damage the heater.
Where is hard water found? Hard water is everywhere. In fact, more than 85% of American homes have hard water.
I = Indoor Venting Intake Exhaust High efficiency ultra-low NOx condensing tankless. 3” PVC venting. 0” clearance to combustible. 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 120 - 140 (100 - 140) High efficiency ultra-low NOx condensing tankless. 3” PVC venting. 0” clearance to combustible.
I = Indoor Easy-Link Temperature GPM (Max) (EL) Multi-Unit (with remote) Per Unit (MU) Uniform Energy Factor Max BTU/h Dimension/ Weight N/A 120 - 140 (100 - 140) 6.6 0.81 140,000 H= 20-1/4” W= 13-3/4” D= 7-3/4” 33 lbs 3” / 5” Concentric, 43’ Max N/A 120 - 140 (100 - 140) 8.0 0.82 190,000 H= 20-1/4” W= 13-3/4” D= 9-1/2” 38 lbs 3/4” Gas/Water 120 VAC 3” / 5” Concentric, 43’ Max (EL) 4 units (MU) 20 unit 104 - 160 (100 - 160) 10.0 0.
500 Tennessee Waltz Pkwy Ashland City, TN 37015 Toll Free: 877.737.2840 599 Hill Street West Fergus, ON N1M 2X1 Tel: 519.843.1610 Fax: 519.787.5500 Toll Free: 877.877.4953 A. O. Smith | © December 2017 | hotwater.
