The temperature of incoming ground water (cold water inlet temperature) varies greatly throughout the U.S. and also fluctuates with change of season. 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). 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

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 ATO-305N 15,000 199,000 5.3 5.3 4.2 50 ATO-505N 15,000 199,000 8.5 7.3 4.2 50 ATO-705N 19,000 237,000 9.8 8.7 5.1 55 ATO-705AN* 19,000 237,000 9.8 8.7 5.1 55 * 705A models are ASME Certified. For propane, change “N” to “P” in model number (ATI-305P). 500 Tenness

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. Priority Indicator Indicates that this controller is setting the temperature Priority Button Priority can be changed to another controller if desir

Smith’s complete line of tankless gas water heaters Model Specifications INNOVATION ON DEMAND A. 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 Num

The temperature of incoming ground water (cold water inlet temperature) varies greatly throughout the U.S. and also fluctuates with change of season. 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). 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

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 Model Selection Guide Ground water temperature factor. The temperature of incoming ground water (cold water inlet temperature) va

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

and also fluctuates with change of season. 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). 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

models Bcg3 & aBcg3 low nox series 108 installation - operation - serVice - maintenance - limited warranty complies with scaQmd low nox rule 1146.2 WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. WHAT TO DO IF YOU SMELL GAS: Do not try to light any appliance. Do not touch any

The water heater may be installed by itself, or with a separate storage tank, on both single and two-temperature systems. When used with a separate storage tank, the circulation may be either by gravity or by means of a circulating pump. When a circulating pump is used it is important to note that the flow rate should be slow so that there will be a minimum of turbulence inside the heater. water (potaBle) heating and space heating 1. All piping components connected to this unit for space heating