FOR YOUR INFORMATION
THERMALEXPANSION
Water supply systems may, because of such events as high line pressure, frequent
The water within the water heater tank expands as it is heated and increases the pressure of the water system. If the relieving point of the water heater’s
STRANGESOUNDS
Possible noises due to expansion and contraction of some metal parts during periods of
OPERATIONAL CONDITIONS
SMELLY WATER
In each water heater there is installed at least one anode rod (see parts sections) for corrosion protection of the tank. Certain water conditions will cause a reaction between this rod and the water. The most common complaint associated with the anode rod is one of a “rotten egg smell” in the hot water. This odor is derived from hydrogen sulfide gas dissolved in the water. The smell is the result of four factors which must all be present for the odor to develop:
A.A concentration of sulfate in the supply water.
B.Little or no dissolved oxygen in the water.
C.A sulfate reducing bacteria which has accumulated within the water heater (this harmless bacteria is nontoxic to humans).
D.An excess of active hydrogen in the tank. This is caused by the corrosion protective action of the anode.
The anode rod in a new
A smelly water condition (Rotten Egg Odor) in your Point of Use water heater can , in most cases, be resolved or reduced with the addition of sufficient amounts of chlorine to eliminate the bacterial growth inside the tank. This can be accomplished through the installation of a chlorine feeder to the system or the periodic flushing of the water heater with
bleach as needed. On systems where the odor is mild and does not occur too rapidly, a monthly flushing may be sufficient. In more severe cases, a system feeder would be more appropriate.
“AIR” IN HOT WATER FAUCETS
HYDROGEN GAS: Hydrogen gas can be produced in a hot water system that has not been used for a long period of time (generally two weeks or more). Hydrogen gas is extremely flammable and explosive. To prevent the possibility of injury under these conditions, we recommend the hot water faucet, located farthest away, be opened for several minutes before any electrical appliances which are connected to the hot water system are used (such as a dishwasher or washing machine). If hydrogen gas is present, there will probably be an unusual sound similar to air escaping through the pipe as the hot water faucet is opened. There must be no smoking or open flame near the faucet at the time it is open.
HIGHWATERTEMPERATURESHUTOFFSYSTEM
A
•Turn off the heater electrical supply. Do not attempt to reset thermostat with power on.
•Remove the two screws securing the outer door and remove door.
•Fold back the insulation to expose the reset button opening.
•Reset the high limit by pushing in the red button marked “RESET”.
•Fold back the insulation so that it completely covers the thermostat and element.
•Replace the outer door.
•Turn “ON” electric power to the water heater.
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