LEAKAGE CHECKPOINTS

Instructions: Use this illustration as a guide when checking for sources of water leakage. You or your dealer may be able to correct what

appears to be a problem. NOTE: Cover and Insulation shown removed to reveal tank top

Where possible remove or lift top cover to examine threads of fittings installed into tank for evidence of leakage. Correct fitting leaks as necessary.

Water leaks at the elements may be due to:

1.Defective element which leaks at terminals or thru flange. Replace element*.

2.Loose element/gasket leak:

(a)Screw-in type: tighten with 1-1/2” socket wrench or Part Number 23985 wrench. If leak continues, remove element*, discard gasket and clean thread areas.Apply nonhardeningPermatex Number 2 to thread areas, install new gasket and screw element into fitting until it seats. Tighten 1/2 to 3/4 turn with wrench.

(b)Flange type: tighten screw with wrench. If leak continues remove element* and discard gasket. Clean gasket seating areas and re-install element with new gasket. NOTE: Part Number 40000-1 scale cleaning replacement screws available where threads have become rusted or damaged, preventing tightening.

All water which appears at the heater bottom or on the surrounding floor may be caused by condensation, loose connections or relief valve operation and leakage. Do not replace the heater until full inspection of all potential leak points is made and corrective steps taken to stop the leak. Leakage from other appliances, water lines or ground seepage should also be suspected until proven otherwise.

Relief Valve

Anode Rod (Some Models)

To Open Drain

Condensation and dripping may appear on pipes when cold water temperature is low. Pipe fitting may be leaking.

Relief valve operation and leakage may be due to water expansion during heating cycle or foreign material on seat of valve. If the valve is not piped to an open drain the released water could be mistaken for a leaking heater. To check where threaded material between jacket opening and swab spud area, remove valve* if indicated and repair with pipe joint compound.

To Open Drain

Water on the side of the tank may be condensation due to the panel or insulation not being in place.

Drain valve leakage could be from the valve itself.* To check for leakage where threaded portion enters tank, insert Q-tip or similar absorbent material between jacket opening and valve to swab spud area. Remove valve* if leak is indicated and repair with pipe joint compound.

*Contact your dealer as it is necessary to shut off electricity and drain tank to perform procedure.

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A.O. Smith DEN, DEL warranty Leakage Checkpoints
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DEN, DEL specifications

A.O. Smith is a well-respected name in the water heating industry, known for its innovative and efficient products. Among their notable offerings are the A.O. Smith DEN and DEL models, which showcase advanced features and technologies designed for residential hot water needs.

The A.O. Smith DEN series is a line of electric tank water heaters that exemplify reliability and performance. One of its main features is the "Eco-friendly" design that meets stringent regulatory standards while providing exceptional energy efficiency. The DEN models are equipped with a variety of capacities, allowing homeowners to choose a unit that best fits their needs, ranging from smaller households to larger family homes.

The DEL series, on the other hand, offers gas-fired water heaters that are built to provide high recovery rates, ensuring that hot water is available whenever needed. The DEL models are equipped with a high-efficiency burner system that enhances fuel utilization, reducing energy costs for homeowners. The robust construction of the DEL series also ensures durability and longevity, making it an excellent investment for those seeking reliable hot water solutions.

Both the DEN and DEL series feature user-friendly digital displays, making it easy for users to monitor temperature settings and energy usage. This technological integration empowers homeowners to manage their hot water needs more effectively, leading to both convenience and savings.

In terms of safety, A.O. Smith has incorporated features such as temperature and pressure relief valves in both series to prevent overheating and excessive pressure buildup. This focus on safety is paramount, providing peace of mind for users.

Moreover, the DEN and DEL models come with comprehensive warranties, reflecting the company's commitment to quality. Homeowners can rest assured that they are investing in products that are not only efficient but also backed by a trusted manufacturer with decades of experience.

In summary, the A.O. Smith DEN and DEL series represent a harmonious blend of advanced technology, energy efficiency, and user-centric features. With their focus on performance and safety, these models stand out as exemplary choices for anyone in need of reliable and efficient hot water solutions. Whether for electric or gas applications, A.O. Smith continues to lead the way in the water heating industry.
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