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7
7
A non-adjustable high temperature limit control operates before
steam temperatures are reached. The high limit is in the same
area as the upper thermostat and must be reset manually when
it operates. BECAUSE THE HIGH LIMIT OPERATES ONLY
MAINTENANCE
DRAINING
If the tank is to be shut off and exposed to freezing temperatures,
it must be drained. Water, if left in the tank and allowed to
freeze, will expand and damage the tank.
1. Turn “OFF” electrical and cold water supplies to tank.
WARNING
Make sure the electrical supply to the tank is turned OFF. Failure
to heed this will result in the possibility of DEATH, SERIOUS
BODILY INJURY OR PROPERTY DAMAGE.
2. Open a nearby hot water faucet and the tank drain valve.
3. The drain valve must be left open during the shut-down
period.
WARNING
The water passing out of the drain valve may be extremely
hot. To avoid being scalded, make sure all connections are
tight and that the water flow is directed away from any
person.
ELEMENT
In some water areas, scale or mineral deposits will build up
on heating elements. This build up will cause a rumbling
noise. Follow the element replacement directions to remove
the elements from the tank. Soaking in vinegar and scraping
will remove the mineral deposit. Be careful not to bend the
element.
ELEMENT REPLACEMENT
WARNING
Replacement elements must (1) be the same voltage and
(2) no greater wattage than listed on the model and rating
plate affixed to the tank.
1. Turn OFF the electrical supply to the tank.
WARNING
Make sure the electrical supply to the tank is turned OFF. Failure
to heed this will result in the possibility of DEATH, SERIOUS
BODILY INJURY OR PROPERTY DAMAGE.
2. Drain the tank. Follow the directions for draining.
3. Take off the access panel and turn back the insulation.
Disconnect the wires from the heating element terminals.
4. Remove the element and gasket. You should always use a
new gasket when you replace the element.
5. Install new element.
6. Reconnect the wires as they were.
7. Fill the tank , following the filling directions on page 7. Fill the
tank with water, BEFORE you turn on the electric supply.
ANODE
The anode rod is used to protect the tank from corrosion. Most
hot water tanks are equipped with an anode rod. The
submerged rod sacrifices itself to protect the tank. Instead of
corroding the tank, water ions attack and eat away the anode
rod. This does not affect the water’s taste or color. The rod
must be maintained to keep the tank in operating condition.
Anode deterioration depends on water conductivity, not
necessarily water condition. A corroded or pitted anode rod
indicates high water conductivity and should be checked and/or
replaced more often than an anode rod that appears to be intact.
Replacement of a depleted anode rod can extend the life of your
water heater. Inspection should be conducted by a qualified
technician, and at a minimum should be checked annually after
the warranty period
Sometimes bacteria and mineral action on the anode will make
the water smell. Chlorination of water supply will get rid of the
odor. Equipment for treating problem water is available at your
local hardware store.
WARNING
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 bodily injury under these conditions,
open the hot water faucet for several minutes at the kitchen sink
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 opened.
FIGURE 8
WHEN ABNORMALLY HIGH WATER TEMPERATURES ARE
PRESENT, IT IS IMPORTANT THAT A QUALIFIED SERVICE
AGENT BE CONTACTED TO DETERMINE THE REASON FOR
OPERATION BEFORE RESETTING.