The best way to measure your incoming ground water temperature is to use a thermometer to measure cold water temperature during the coldest season of the year. To simplify the process, use this map to determine whether your installation location is in the Southern Zone, Central Zone or Northern Zone. Average Ground Water Temperatures SOUTHERN ZONE A v er age Ground W ater T emper atur e: 62°F to 77°F CENTRAL ZONE A v er age Ground W a ter T emper atur e: 52°F to 61°F NORTHERN ZONE A v er age Gro

To simplify the process, use this map to determine whether your installation location is in the Southern Zone, Central Zone or Northern Zone. Average Ground Water Temperatures SOUTHERN ZONE A v er age Ground W ater T emper atur e: 62°F to 77°F CENTRAL ZONE A v er age Ground W a ter T emper atur e: 52°F to 61°F NORTHERN ZONE A v er age Ground W a ter T e mper atur e: 37°F to 51°F Remote Controller All models come with a Remote controller that can set the temperature within a specific range. Prior

To simplify the process, use this map to determine whether your installation location is in the Southern Zone, Central Zone or Northern Zone. Average Ground Water Temperatures SOUTHERN ZONE A v er age Ground W ater T emper atur e: 62°F to 77°F CENTRAL ZONE A v er age Ground W a ter T emper atur e: 52°F to 61°F NORTHERN ZONE A v er age Ground W a ter T e mper atur e: 37°F to 51°F Remote Controller All models come with a Remote controller that can set the temperature within a specific range. Prior

O. Smith On-Demand Gas Water Heaters Endless Hot Water. Endless Innovation. Trust the innovation leader to give you more choices in on-demand water heating. A. O. Smith’s comprehensive line supplies endless hot water when you ask for it...with high efficiency that saves money on both residential and commercial applications. Product Features: Innovative Technology Energy Efficiency ¦ Indoor and outdoor installation options ¦ Up to 84% thermal efficiency, providing significant energy ¦ Continuous

Priority Indicator Indicates that this controller is setting the temperature Priority Button Priority can be changed to another controller if desired On/Off Button Will turn the water heater on/off Temperature Display Shows the temp setting Error Codes When a fault is detected an error code flashes at the temperature setting Thermostat Increases/decreases temp setting In Use Indicator Light Indicates hot water is being supplied (a tap is open) A. O. Smith On-Demand Gas Water Heaters Endless Hot

Consult your sales representative or contact A. O. Smith for specifications and recommendations on which model is right for specific requirements. BTU Input Approximate Model Natural / Propane Hot Water Output (GPM) Shipping Number Minimum Maximum Maximum 45. F Rise 77. F Rise Weight (lbs) INDOOR MODELS ATI-305N 15,000 199,000/190,000 5.3 5.3 4.2 50 ATI-505N 15,000 199,000/190,000 8.5 7.4/7.1 4.2 50 ATI-705N 19,000 237,000 9.8 8.8 5.1 55 ATI-705AN* 19,000 237,000 9.8 8.8 5.1 55 OUTDOOR MODELS AT

O. Smith’s complete line of tankless gas water heaters A. O. Smith On-Demand Gas Water Heaters Each A. O. Smith on-demand water heater is designed for a specific application. Consult your sales representative or contact A. O. Smith for specifications and recommendations on which model is right for specific requirements. BTU Input Approximate Model Natural / Propane Hot Water Output (GPM) Shipping Number Minimum Maximum Maximum 45. F Rise 77. F Rise Weight (lbs) INDOOR MODELS ATI-305N 15,000 199,

O. Smith’s complete line of tankless gas water heaters A. O. Smith On-Demand Gas Water Heaters Each A. O. Smith on-demand water heater is designed for a specific application. Consult your sales representative or contact A. O. Smith for specifications and recommendations on which model is right for specific requirements. BTU Input Approximate Model Natural / Propane Hot Water Output (GPM) Shipping Number Minimum Maximum Maximum 45. F Rise 77. F Rise Weight (lbs) INDOOR MODELS ATI-305N 15,000 199,

. . . . . . . . .2, 3 Operating Instructions . . . . .4–11 Care and Cleaning . . . . . . . . .12, 13 Installation Instructions . . .14–18 Troubleshooting Tips . . . . . .19, 20 Consumer Support . . . . . . . . .22, 68 Write the model and serial numbers here: Model # ________________ Serial # ________________ You can find them on the rating label on the front side of your water heater. Owner’s Manual & Installation Instructions GEH50DNSRSA GEH50DXSRGA Chauffe-eau residentiel hybride electrique Ma

Smith for water heaters, is permanently fused to steel, providing years of corrosion protection and dependable use. HONEYWELL SMARTVALVE™ - Integrated control module and gas valve, this control monitors all critical water heater functions including temperature (up to 180°F, 82.2°C) main valve operation, blower operation, energy cut-out, and hot surface igniter. The diagnostic LED enables a technician to quickly and easily service the system and verify safe and efficient operation. ANODE - Core