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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 solar water heater 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 solar
water heater.
1. Turn “OFF” the electrical supply to the solar water heater.
WARNING
Make sure the electrical supply to the solar water heater 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 until the water is no longer
hot, then turn off the cold water supply and open the drain
valve, leaving the hot water faucet open.
3. The drain valve must be left open during the shut-down
period. Once the solar water heater is drained close the hot
water faucet.
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 solar water heater.
1. Turn OFF the electrical supply to the solar water heater.
WARNING
Make sure the electrical supply to the solar water heater is
turned OFF. Failure to heed this will result in the possibility
of DEATH, SERIOUS BODILY INJURY OR PROPERTY
DAMAGE.
2. Drain the solar water heater. 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 5. 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 9
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.