VENT CONNECTION

Vent connections must be made to an adequate stack or chimney. Size and install proper size vent pipe. Do not reduce pipe size to less than that of the draft hood outlet.

Horizontal runs of vent pipe must have a minimum upward slope toward the chimney of 1/4 inch per foot. Dampers or other obstructions must not be installed in between the heater and the draft hood. Be sure that the vent pipe does not extend beyond the inside wall of the chimney.

Where a continuous or intermittent back draft is found to exist, the cause must be determined and corrected. A special vent cap may be required. If the back draft cannot be corrected by the normal methods or if a suitable draft cannot be obtained, a blower type flue gas exhauster must be employed to assure proper venting and correct combustion.

THERMOMETERS (Not Supplied)

Thermometers should be obtained and field installed as shown, see Figure 4.

Thermometers are installed in the system as a means of detecting the temperature of the outlet water supply.

RELIEF VALVE

This water heater is equipped with a combination temperature- pressure relief valve that complies with the standard for relief valves for hot water supply system, ANSI Z21.22/CSA 4.4. FOR SAFE

OPERATION OF THE WATER HEATER, THE RELIEF VALVE(S) MUST NOT BE REMOVED OR PLUGGED.

ASME ratings cover pressure relief capacities. ANSI ratings cover release rate with temperature actuation.

In addition to the appliance relief valve, each remote storage tank which may be used in conjunction with this appliance shall also be

installed with a properly sized, rated and approved combination temperature (ANSI) and pressure (ASME) relief valve(s).

WARNING

THE PURPOSE OF RELIEF VALVE IS TO AVOID EXCESSIVE PRESSURE OR TEMPERATURE INTO THE STEAM RANGE, WHICH MAY CAUSE SCALDING AT FIXTURES, TANK EXPLOSION, SYSTEM OR HEATER DAMAGE. NO VALVE IS TO BE PLACED BETWEEN THE RELIEF VALVE AND TANK.

Your local code authority may have other specific relief valve requirements.

A DRAIN LINE MUST BE CONNECTED TO THE RELIEF VALVE TO DIRECT DISCHARGE TO A SAFE LOCATION TO AVOID SCALDING OR WATER DAMAGE. THIS LINE MUST NOT BE REDUCED FROM THE SIZE OF THE VALVE OUTLET AND MUST NOT CONTAIN VALVES, RESTRICTIONS NOR SHOULD IT BE LOCATED IN FREEZING AREAS. DO NOT THREAD OR CAP THE END OF THIS LINE. RESTRICTED OR BLOCKED DISCHARGE WILL DEFEAT THE PURPOSE OF THE VALVE AND IS UNSAFE. DISCHARGE LINE SHALL BE INSTALLED TO ALLOW COMPLETE DRAINAGE OF BOTH THE VALVE AND LINE.

See SERVICE INFORMATION section for procedure and precautions.

The type, size and location of the relief valves must be in accordance with local codes. The locations of the relief valves shown in the installation diagrams are typical. The heater has a factory installed high temperature limit switch.

For circulating heaters, the separate storage vessel must have a temperature and pressure relief valve installed. This valve shall comply with the standard for relief valves and automatic gas shutoff devices for hot water supply systems.

Cold water inlet lines to heater should be installed as shown in order to minimize gravity circulation of hot water to building cold water lines.

MIXING VALVE APPLICATION

SINGLE TEMPERATURE

INSERT B - VACUUM

FOR TWO TEMPERATURE WATER

 

 

RELIEF VALVE

 

 

*INSTALL PER

 

 

LOCAL CODES

 

 

 

 

 

INSTALL THERMAL EXPANSION

 

 

TANK OR DEVICE IF CHECK VALVE

CIRCULATING RETURN LINE CONNECTIONS

 

OR PRESSURE REDUCING

 

VALVE IS USED IN SUPPLY

TEMPERED WATER LOOP, IF USED, CONNECT TO POINT

 

 

 

"A". STORED TEMPERATURE WATER LOOP, IF USED,

 

WARNING

CONNECT TO COLD WATER INLET.

TEMPERATURE SETTING SHOULD NOT EXCEED SAFE

CAUTION: IF BUILDING COLD WATER SUPPLY HAS A BACK-

USE TEMPERATURE AT FIXTURES, SEE

TEMPERATURE REGULATION ON PAGE 12. IF HIGHER

FLOW PREVENTER, CHECK VALVE OR WATER METER

PREHEAT TEMPERATURES ARE NECESSARY TO

WITH CHECK VALVE, PROVISIONS FOR THERMAL

OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN ANTI-

EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST

SCALD VALVE FOR HOT WATER SUPPLIED TO

BE PROVIDED.

FIXTURES.

 

 

 

 

 

FIGURE 4

7

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A.O. Smith BT- 80 warranty Relief Valve, Vent Connection
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BT- 80 specifications

A.O. Smith BT-80 is a notable model in the realm of water heater technology, representing a confluence of efficiency, durability, and advanced engineering. As an industry leader, A.O. Smith has designed this model with the end-user in mind, focusing on delivering a reliable and long-lasting water heating solution suitable for residential and light commercial applications.

One of the standout features of the BT-80 is its impressive 80-gallon capacity, which makes it ideal for households with high hot water demands. Whether it's for daily showers, laundry, or dishwashing, this water heater can accommodate the needs of larger families or homes that require a consistent supply of hot water throughout the day.

The BT-80 utilizes a high-efficiency burner that maximizes energy use, ensuring that less fuel is consumed while providing consistent heating performance. This feature not only reduces utility costs for the homeowner but also reinforces A.O. Smith's commitment to environmentally friendly solutions. Additionally, the water heater is equipped with an insulated tank that minimizes heat loss, further improving its efficiency.

Safety and reliability are key characteristics of the BT-80. It comes with advanced safety features, including a pressure relief valve that prevents excess pressure build-up, ensuring safe operation at all times. The product is also designed for easy maintenance, with accessibility features that allow users or technicians to perform routine checks and repairs conveniently.

This model incorporates cutting-edge technology such as the company's Blue Diamond® glass coating, which provides superior corrosion resistance. This protective feature extends the lifespan of the tank, making it an excellent investment for homeowners.

Moreover, the BT-80 is built to meet stringent industry standards, ensuring it not only performs well but also complies with local codes. Its robust construction means it can withstand various water conditions while maintaining efficiency.

In summary, the A.O. Smith BT-80 is an exemplary water heating solution characterized by its large capacity, energy-efficient operation, advanced safety features, and durable design. It is an ideal choice for customers seeking a reliable and efficient way to meet their hot water needs. With A.O. Smith's reputable engineering and commitment to quality, the BT-80 is a worthy consideration for anyone in the market for a new water heater.
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