VENT PIPE TERMINATION

NOT RECOMMENDED:

PREFERRED PRACTICE:

STREET ELBOW

NORMAL ELBOW

6 in.

(15 cm) min.

BACK TO BACK ELBOWS

90° SHORT SWEEP ELBOW

90° LONG SWEEP ELBOW

(MORE RESTRICTIVE)

(LESS RESTRICTIVE)

FIGURE 19

VENT LENGTH LESS THAN OR

VENT LENGTH GREATER THAN 20

EQUAL TO 20 EQUIVALENT FEET

EQUIVALENT FEET (6.1m) USE THIS

(6.1m) USE THIS SCREEN.

SCREEN.

FIGURE 20

The first step is to determine where the vent pipe will terminate (see Figures 24, 29 & 31). The vent may terminate through a sidewall as shown in Figure 24 or through the roof as shown in Figure 29.

The vent system must terminate so that proper clearances are maintained as cited in local codes or the current edition of the National Fuel Gas Code, (ANSI Z223.1, 12.9.1 through 12.9.4).

Instructions on proper installation through a sidewall are provided in Figures 31.

Plan the vent system layout so that proper clearances are maintained from plumbing and wiring.

Vent pipes serving power vented appliances are classified by building codes as “vent connectors”. Required clearances from combustible materials must be provided in accordance with information in this manual under FACTS TO CONSIDER ABOUT LOCATION AND INSTALLING THE WATER HEATER, and with the National Fuel Gas Code and local codes.

PLANNING THE VENT SYSTEM

Plan the route of the vent system from the exhaust elbow to the planned location of the vent terminal.

1.Layout total vent system to use a minimum of vent pipe and elbows.

2.This water heater is capable of venting flue gases a maximum distance equivalent to 50 ft. (15.2m) of 2 in. pipe or 100 ft. (30.5m) of 3 in. pipe. The use of elbows reduces the maximum distance (see Table 1).

NOTE: The lengths of pipe listed are exclusive of the termination. The termination elbow, with an installed screen, is required and uses the equivalent of 7 ft. (2.1m) of vent pipe length. Therefore, the remainder of the vent system must not exceed the lengths listed.

NOTE: Do NOT use Cellcore venting (PVC outer layer, foamcore-type material for middle layer, and then PVC inside layer).

 

Maximum vent

Maximum vent

Number

length for 2 in. pipe

length for 3 in. pipe

ft. (m)

ft. (m)

of 90°

Short

Long

Short

Long

Elbows

Radius

Radius

Radius

Radius

 

 

Elbow

Elbow

Elbow

Elbow

1

43 (13.1)

45 (13.7)

93 (28.4)

95 (28.9)

2

36 (10.9)

40 (12.2)

86 (26.2)

90 (27.4)

3

29 (8.8)

35 (10.6)

79 (24.0)

85 (25.9)

4

22 (6.7)

30 (9.1)

72 (21.9)

80 (24.4)

5

15 (4.5)

25 (7.6)

65 (19.8)

75 (22.8)

TABLE 1

3.The exhaust elbow assembly comes with a straight section of 2 in. pipe installed. To continue the vent system, a rubber coupling must be attached. The venting must extend 6 in. (15cm) vertically from the top of the heater before installing an elbow.

If using 2 inch vent pipe:

Install the rubber coupling and gear clamps (supplied) at the end of the section of vent pipe installed on the heater. Continue building the vent system, or connect the existing vent system to the coupling. The total vent system must not exceed the lengths discussed above, where each (short radius) elbow is equal to 7 equivalent feet (2.1m) of straight pipe. The elbow and rodent screen supplied in the vent kit must be used as the vent termination.

www.americanwaterheater.com

23

Page 22 Page 24
Page 23
Image 23
American Water Heater 316888-004 warranty Vent Pipe Termination, Planning the Vent System, If using 2 inch vent pipe
Page 22 Page 24

316888-004 specifications

The American Water Heater 316888-004 is a reliable and efficient choice for homeowners seeking a dependable and effective water heating solution. Designed with a focus on performance and convenience, this water heater provides an impressive array of features that meet the demands of modern living.

One of the standout characteristics of the 316888-004 is its efficient heating technology. The unit employs advanced heating elements that ensure rapid heating of water, reducing wait times for hot water availability. This feature is particularly beneficial for households with high hot water demands, such as those with multiple bathrooms or numerous appliances requiring hot water simultaneously. By delivering hot water quickly, this model enhances user satisfaction and improves overall household efficiency.

In terms of design, the American Water Heater 316888-004 boasts a compact structure, which makes it suitable for various installation environments, including tight spaces. Its durable construction is complemented by high-quality materials, ensuring longevity and reduced maintenance costs. This model is built to withstand the rigors of daily use, providing peace of mind to homeowners regarding its reliability and durability.

Safety is another important aspect of the 316888-004. The unit is equipped with multiple safety features, including a temperature and pressure relief valve, which helps prevent overheating and excessive pressure buildup. Additionally, it accommodates users' needs for energy efficiency, making it an environmentally friendly option. The device is designed to minimize energy consumption, which not only lowers utility bills but also contributes to reducing the household's overall carbon footprint.

Moreover, the 316888-004 is user-friendly, featuring a simple control interface that makes adjusting temperature settings easy. This accessibility allows users to customize their water heating experience according to their personal preferences.

In conclusion, the American Water Heater 316888-004 stands out as a top choice in its category. With its efficient heating technology, durable construction, focus on safety, energy efficiency, and user-friendly features, it meets the diverse needs of contemporary households. For anyone seeking a reliable, high-performance water heater, the 316888-004 is undoubtedly a smart investment, ensuring consistent hot water availability for years to come.
Top Page Image Contents