A.O. Smith 650A, 740A, BTP(V)-540A warranty Circulating Pump Wiring Diagram

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TWO TEMPERATURE - THREE HEATERS (TWO PRE-HEATERS/ONE BOOSTER)

WITH OR WITHOUT BUILDING RECIRCULATION

CAUTION: IF BUILDING COLD WATER SUPPLY HAS A BACKFLOW PREVENTER, CHECK VALVE OR WATER METER WITH CHECK VALVE, PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED.

FOR MULTIPLE HEATER INSTALLATION SEE MANIFOLD KIT SPECIFICATIONS, PAGE 18.

DANGER

TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 23. IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES.

TWO TEMPERATURE - TWO HEATERS (ONE PRE-HEATER/ONE BOOSTER HEATER)

WITH OR WITHOUT BUILDING RECIRCULATION

*PIPE RELIEF VALVE TO OPEN DRAIN.

**140°F TO 150°F SHOULD BE MAXIMUM WATERTEMPERATUREMAINTAINEDINTHE PRE-HEATERS.

120°F SHOULD BE THE MINIMUM TEMPERATURE OF WATER IN THE PRE- HEATERS.

CIRCULATING PUMP WIRING DIAGRAM

CONNECT CIRCULATING LINE FROM FIXTURES, IF

USED, TO COLD WATER SUPPLY LINE OF PRE-

HEATER.

CONNECT CIRCULATING LINE OF 180°F OR BOOSTED

WATER, IF USED, TO INLET WATER LINE TO BOOSTER.

INSTALL IN ACCORDANCE WITH LOCAL CODES.

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Contents Installation Operation Maintenance Limited Warranty Models BTPV-540A, 650A and 740AROUGH-IN Dimensions ForewordTable of Contents General Safety InformationFeatures Extended NON-USE PeriodsInstallation Instructions Dishwashing Machine RequirementRequired Ability UncratingHard Water ClearancesAIR Requirements VentingBarometric Draft Control Assembly Vertical Venting for BTP ModelsHorizontal SIDE-WALL Venting For Btpv Models Vent ConnectionsVent System Installation Vent Terminal LOCATIONS-EXHAUSTDirect Venting for Btpv Models Vent Terminal LOCATIONS-INTAKEDirect Vent System Installation Drain Valve and Access Panels GAS PipingANY Supply Pressure Testing Exceeding 1/2 PSIG. GAS GAS Meter Size City Gases onlyGAS Pressure Regulation GAS ValvesRelief Valve Water Line ConnectionsSystem Connections Installation Diagrams Circulating Pump Wiring DiagramWiring Diagram for Tempered Water Loop if Used Circulating Pump Wiring Diagram Page Manifold Kits Heater Wiring Start UPPurging FillingPage Page For Your Safety Read Before Lighting Sequence of Operation Adjustment for High Elevation Application Premix LOW NOx Burner Exploded View for BTP Models Premix LOW NOx Burner Exploded View for Btpv Models Maintenance General InformationSediment Removal DrainingLime Scale Removal Checklist and Service Troubleshooting Water is TOO HOTWater Heater Makes Sounds HOT Water OdorMotor will not RUN Burner Lockout Once in a WhileNoisy Burner Operation GAS Fails to Shut OFFModel Btpv Limited Warranty Page Page Replacement Parts

BTP(V)-540A, 650A, 740A specifications

A.O. Smith is renowned for its innovative water heating solutions, and the 650A, 740A, and BTP(V)-540A models exemplify this legacy. These water heaters are designed with advanced technology and feature a range of specifications tailored to meet diverse heating needs.

The A.O. Smith 650A model stands out with its efficient design and high-capacity heating capabilities. It is equipped with a powerful heating element that ensures rapid water heating, allowing consumers to enjoy hot water without long waits. The unit's tank is insulated with durable materials, which minimizes heat loss and enhances energy efficiency. Additionally, it incorporates a glass-lined tank that resists corrosion and extends the lifespan of the water heater, making it a reliable choice for households.

Moving on to the 740A model, this unit is designed for larger applications and can accommodate significant hot water demands. Its advanced heating technology includes an impressive recovery rate, which enables it to supply hot water even during peak usage times. The 740A is also equipped with smart diagnostics that monitor the system's performance, ensuring optimal operation and identifying potential issues before they escalate. This feature enhances user convenience and reduces maintenance costs.

The BTP(V)-540A takes efficiency one step further with its unique heat pump technology. It captures ambient heat from the surroundings to heat water, significantly reducing energy consumption compared to traditional electric water heaters. This eco-friendly model is ideal for those looking to lower their energy bills without sacrificing performance. The BTP(V)-540A also features a user-friendly digital display that allows users to easily adjust settings and monitor performance.

In summary, the A.O. Smith 650A, 740A, and BTP(V)-540A models showcase the brand's commitment to quality, efficiency, and innovation. Each model comes with distinct features tailored to different household requirements. With advanced heating technologies, robust construction, and user-friendly interfaces, these water heaters represent some of the best options available in the market for ensuring a reliable hot water supply. A.O. Smith continues to set the bar high in the water heating industry, making these models a smart investment for any home.
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