Bradford-White Corp 9kW, 900kW If You Cannot Identify Or Correct The Source Of Malfunction

Excessive water pressure is not the most common cause of relief valve leakage. It is often caused by a “closed system.” A check valve, back flow preventer or pressure reducing 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 and plumbing system will be damaged.

When such a condition is encountered, local codes or inspection agency should be consulted to determine which of the following procedures is acceptable in your area.

•Installation of an expansion tank.

•Removal of the check valve.

4.Examine the flange area of the elements for gasket leakage. Tighten the screw-in flange or, if necessary, follow the “Water and Lime Scale Removal” procedure to remove the element and replace the “O” ring gaskets that seal each element.

IF YOU CANNOT IDENTIFY OR

CORRECT THE SOURCE OF

MALFUNCTION:

1.Place the water heater electrical disconnect switch on the “OFF” position.

2.Contact your mechanical contractor or service technician.

28 CP-5M-5/02-Reprinted in U.S.A.