FIGURE 6.

DIRECT VENTING - FOR BTPV MODELS

All exhaust vent terminal, flue reducer, and intake vent terminal are supplied with any unit intended for direct venting. These parts must be installed without alteration.

This heater is category III appliance when used in a direct vent application. All national and local codes pertaining to the installation of such an appliance must be followed.

Horizontal portions of the exhaust vent system must be installed with a minimum upward slope of 1/4” (6.35 mm) per foot of length.

Selkirk metalbestos model PS or G vent is approved for use as exhaust venting on these models. Model PS is a double-wall vent with a 1” (25.4 mm) air space between pipes. Model G is a single-wall variation of model PS for use where combustible clearance is not a concern, see Table 4.

TABLE 4.

Selkirk Metalbestos Model PS

Clearance to Combustibles

Interior

6” (152.4 mm)

Exterior

6” (152.4 mm)

 

 

TABLE 5.

Dimension in

 

BTPV

Inches (mm)

 

540A -740A

Flue Outlet Dia.

 

9

(229)

Flue Reducer Dimension

 

9 x 8

(Supplied)

 

(229 x 203)

Min. Exhaust Vent Dia. Inch (mm)

 

8

(203)

Min. Intake Vent Dia. Inch (mm)

 

8

(203)

Maximum Number Of

 

90°

 

4

Elbows, Intake

 

45°

 

8

Maximum Number Of

 

90°

 

4

Elbows, Exhaust

 

45°

 

8

Total Intake Vent

 

Max.

75

(23 m)

Length, Equiv. Ft.

 

Min.

3

(1 m)

Total Exhaust Vent

 

Max.

75

(23 m)

Length, Equiv. Ft.

 

Min.

6 (1.8)

 

 

 

 

 

Note: Barometric draft control is not used in direct vent installations as the venting system must be sealed.

When calculating the equivalent length of a venting system each 90 elbow is equivalent to 10 feet of straight pipe. Each 45 elbow is equivalent to 5 feet (1.5 m) of straight pipe. Do not exceed the maximum number of elbows as shown in Table 5. In no case may the sum of the straight pipe lengths and the equivalent lengths of the elbows exceed the valves in Table 5.

8” diameter PVC or galvanized pipe is approved for use as intake venting on these models. Class 63, 100, 125, 200, and schedule 40 pipe may be used for PVC pipe. Intake venting must be adequately supported to avoid unnecessary stress on vent hood, venting, or burner.

See Table 5 limitations on venting system design for direct vent installations.

VENT TERMINAL LOCATIONS-EXHAUST

See “Horizontal Venting” in this manual for acceptable locations for exhaust hoods.

VENT TERMINAL LOCATIONS-INTAKE

When considering locations for the intake terminal, bear in mind that the terminal:

9

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A.O. Smith BTP(V)-540A, 650A, 740A warranty Direct Venting for Btpv Models, Vent Terminal LOCATIONS-INTAKE
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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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