FIGURE 6-THERMOSTAT FOR NATURAL AND

PROPANE GASES

GAS PRESSURE REGULATOR

The gas pressure regulator is built into the gas valve and is equipped to operate on the gas specified on model and rating plate. The regulator is factory adjusted to deliver gas to burner at correct water column pressure allowing for a nominal pressure drop through the controls.

The minimum gas supply pressure for input adjustment must not be less than 5.0" W.C. (1.24 kPa) for natural gas and 11.0" W.C. (2.74 kPa) for propane gas.

Do not subject the combination gas valve to inlet gas pressures of more than 14.0" w.c. (3.48 kPa). A service regulator is necessary if higher gas pressures are encountered.

Gas pressure specified in Table 2, refer to flow pressure taken at pressure tap of automatic gas valve while heater is operating.

OPERATION

It is recommended that a qualified person perform the initial firing of the heater. At this time the user should not hesitate to ask the

individual any questions which he may have in regard to the operation and maintenance of the unit.

WARNING

DO NOT ATTEMPT TO OPERATE WATER HEATER WITH COLD WATER INLET VALVE CLOSED.

NEVER OPERATE THE HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER AND A TEMPERATURE AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF VALVE OPENING OF THE HEATER. DO NOT ATTEMPT TO OPERATE HEATER WITH COLD WATER INLET VALVE CLOSED.

TO OPERATE THE WATER HEATER

1.Close the heater drain valve by turning handle clockwise .

2.Open a nearby hot water faucet to permit the air in the system to escape.

3.Fully open the cold water inlet pipe valve allowing the heater and piping to be filled.

4.Close the hot water faucet as water starts to flow.

5.The heater is ready to be operated.

A checklist is included in the SERVICE INFORMATION section of this manual. By using this checklist the user may be able to make minor operational adjustments and save himself unnecessary service calls. However, the user should not attempt repairs which are not listed in this section.

PURGING

Gas line purging is required with new piping or systems in which air has entered.

CAUTION

PURGING SHOULD BE PERFORMED BY PERSONS EXPERIENCED IN THIS TYPE GAS SERVICE. TO AVOID RISK OF FIRE OR EXPLOSION, PURGE DISCHARGE MUST NOT ENTER CONFINED AREAS OR SPACES WHERE IGNITION CAN OCCUR. THE AREA MUST BE WELL VENTILATED AND ALL SOURCES OF IGNITION MUST BE INACTIVATED OR REMOVED.

TABLE 2.

MANIFOLD PRESSURE SETTING

Model

Type of

 

 

 

Manifold

Number

Gas

Input

 

Pressure

BT-80

Natural

75,100 Btu/Hr

 

22 kW

4.0 in. W.C.

1.0 kPa

 

 

 

 

 

 

 

BT-80

Propane

75,100 Btu/Hr

 

22 kW

10.0 in. W.C.

2.5 kPa

 

 

 

 

 

 

 

BT-100

Natural

75,100 Btu/Hr

 

22 kW

4.0 in. W.C.

1.0 kPa

 

 

 

 

 

 

 

BT-100

Propane

75,100 Btu/Hr

 

22 kW

10.0 in. W.C.

2.5 kPa

 

 

 

 

 

 

 

9

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A.O. Smith BT- 80 warranty GAS Pressure Regulator, To Operate the Water Heater, Purging
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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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