Pull and connect the 3-1/8 in. (80mm) corrugated tube to the water heater’s flue tube reducer with hi-temp red silicone (included) and gear clamp. Make sure this connection is tight and leak proof.

*The sealant between 3-1/8 in. (80mm) corrugated tube and water heater’s flue tube reducer must be hi-temp red silicone or other material suitable for 600°F (315°C) continuous service.

TOP VIEW

90° MAXIMUM BEND

FIGURE 23

Apply hi-temp red silicone (included) around 6 in. (152mm) collar on air manifold box. Pull corrugated vent tube all the way on to collar and secure with one sheet metal screw (approx. 3/4 in. (19mm) up from edge of vent tube. Pull gear clamp past screw and tighten.

FIGURE 24

Check the level or slope of the venting again, and adjust if required.

SLOPE

FIGURE 25

OFFSET VENT ARRANGEMENT

CONDITION 1:

Where a straight vent arrangement is impossible, a horizontal 90 degree maximum bend can be made. Use the water heater casing outer diameter as a template to form the corrugated tube.

FIGURE 26

CONDITION 2:

Where floor joists impede venting, a rise to complete the vent termination is possible. All installations require 1 in. (25mm) clearance to combustibles.

Note:

A. The maximum horizontal vent length of 80 in. (2.03m) minus wall thickness should be considered when installing an offset vent arrangement.

B. Do not combine condition 1 (Figure 26) with condition 2 (Figures 27 & 28) in the same installation.

C. The maximum allowable drop from vent center-line to vent termination center-line (Figure 28) is 7.25 in. (184mm).

>1 in. (25mm)

>1 in. (25mm)

 

WALL 10 in. (254mm) (REF)

MINIMUM

68 in. (1.72m) FOR

40 gal. MODELS AND

76 in. (1.93m)

FOR 50 gal. AND

50 gal. Hi-INPUT MODELS

FIGURE 27

>1 in. (25mm)

>1 in. (25mm)

 

7.25 in. (184mm)

MAX

WALL 10 in. (254mm) (REF)

MINIMUM

68 in. (1.72m) FOR

40 gal. MODELS AND

76 in. (1.93m)

FOR 50 gal. AND

50 gal. Hi-INPUT MODELS

FIGURE 28

18

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A.O. Smith GDVT instruction manual Offset Vent Arrangement, Minimum
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GDV, GDVT specifications

A.O. Smith is a well-known name in the water heating industry, and its GDVT and GDV series of water heaters exemplify the company's commitment to quality, efficiency, and innovation. These models are designed to provide reliable hot water solutions for both residential and commercial needs, seamlessly integrating advanced technology and user-friendly features.

One of the main features of the GDVT and GDV series is their high energy efficiency ratings. These water heaters utilize advanced insulation and energy-saving technologies, allowing them to achieve impressive efficiency levels. The GDVT series, for instance, can achieve an Energy Factor (EF) rating of up to 0.96, making it an environmentally friendly choice that can significantly reduce energy bills. This high level of efficiency is a result of thoughtful engineering, including a highly insulated tank that minimizes heat loss.

Another standout characteristic of the GDVT and GDV series is their compact design. These models are built to fit into tight spaces, making them ideal for homes or businesses with limited installation areas. Despite their compact size, they maintain a large storage capacity, ensuring that users have access to consistent hot water. The GDVT series is particularly known for its vertical design, which allows for easy installation in smaller utility rooms or closets.

The GDV models feature a robust digital display that provides real-time information about the water heater's operation. Users can easily monitor the unit’s performance and make adjustments as needed. Additionally, these models come equipped with advanced safety features, including a built-in safety shut-off system and over-temperature protection, ensuring safe and reliable operation.

Both the GDVT and GDV series utilize A.O. Smith's innovative HydroJet® technology, which minimizes sediment buildup within the tank. This technology involves the strategic placement of an internal dip tube that maximizes water circulation, helping to extend the life of the water heater and maintain optimal performance over the years.

In summary, the A.O. Smith GDVT and GDV series water heaters are an excellent choice for those seeking a balance of efficiency, compact design, advanced technology, and enhanced safety. With their impressive energy ratings, user-friendly features, and cutting-edge technologies, these units are tailored to meet the demands of modern residential and commercial water heating solutions, ensuring a consistent supply of hot water while minimizing environmental impact.
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