A.O. Smith DEL, DEN Water Is Too Hot, Water Heater Makes Sounds, Water Leakage Is Suspected

Models: DEN DEL

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WATER IS TOO HOT

service, contact your dealer or utility company. Refer to TEMPERATURE REGULATION section.

4.The storage capacity of the heater may have been exceeded by large demands of hot water.

5.If the heater was installed when incoming water temperatures were warm, colder incoming temperatures will create the effect of less hot water.

6.Look for leaking or open hot water faucets.

WATER IS TOO HOT

1. Refer to TEMPERATURE REGULATION section.

WATER HEATER MAKES SOUNDS

1. See MAINTENANCE

WATER LEAKAGE IS SUSPECTED

1.Check to see if the heater drain valve is tightly closed.

2.The apparent leakage may be condensation which forms on cool surfaces of the heater and piping.

3.If the outlet of the relief valve is leaking it may represent:

Excessive water pressure.

Excessive water temperature.

Faulty relief valve.

Excessive water pressure is the most common cause of relief valve leakage. It is often caused by a “closed system”. A check valve in the inlet system will not permit the expanded hot water volume to equalize pressure with the main. A relief valve must release this water or the water heater or plumbing system will be damaged.

When such a condition is encountered, local codes or inspection agency should be consulted to determine which system is acceptable in your area. These may consist of:

Installation of a second relief valve with lower setting than the primary safety relief valve.

An expansion tank of suitable pressure and provision to avoid water logging.

Removal of the check valve.

IF YOU CANNOT IDENTIFY OR CORRECT

THE SOURCE OF THE MALFUNCTION

1.Place the water heater electrical switch in the OFF position.

2.Close the cold water inlet valve to the heater.

3.Contact your dealer.

NOTES

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A.O. Smith DEL, DEN warranty Water Is Too Hot, Water Heater Makes Sounds, Water Leakage Is Suspected