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Excessive water pressure is the most common cause of relief
valve leakage. It is often caused by a “closed system”. If a
check valve is in the inlet system it will not permit the expanded
hot water volume to equalize pressure with the main. The
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 relief valve.
• An expansion tank of suitable size and pressure rating and
provision to avoid water logging.
REPLACEMENT PARTS
Replacement parts may be ordered through authorized servicers
or distributors, refer to your local Yellow Pages for where to call
or contact State Water Heaters, 500 Lindahl Parkway,
Ashland City, TN 37015. When ordering parts, be sure to state
the quantity, part number and description of the item including
the complete model and serial number as it appears on the
product. Refer to the parts list for more information.
For additional troubleshooting information, refer to the power
burner manual.