not cause any property damage, as the water may be extremely hot,
see Figure 7.
fiGure 7.
If after manually operating the valve, it fails to completely reset and
continues to release water, immediately close the cold water inlet
to the water heater, follow the draining instructions, and replace the
temperature-pressure relief valve with a new one.
If the temperature-pressure relief valve on the appliance weeps
or discharges periodically, this may be due to thermal expansion.
You may have a check valve installed in the water line or a water
meter with a check valve. Consult your local water supplier or
service agency for further information. Do not plug or remove the
temperature-pressure relief valve.
draininG
The water heater should be drained if being shut down during
freezing temperatures. Also periodic draining and cleaning of
sediment from the tank may be necessary.
1. Turn off and unplug the water heater from the electrical outlet.
2. CLOSE the cold water inlet valve to the water heater.
3. OPEN a nearby hot water faucet and leave open to allow for
draining.
4. Disconnect water connections. Remove unit from wall. UNIT WILL
BE HEAVY. Turn unit upside down and drain unit into a suitable
drain or receptacle.
removinG the front panel
1. Turn off and unplug the water heater from the electrical outlet
and follow “DRAINING INSTRUCTIONS.”
2. Remove the temperature knob by pulling straight out.
anode rod inspection
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.
NOTE: Artificially softened water is more corrosive because the process
substitutes sodium ions for magnesium and calcium ions. The use of a
water softener may decrease the life of the water heater tank.
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 every
three years. The anode rod in this unit is attached to the element
flange. For removal instructions, see “
ELEMENT CLEANING /
REPLACEMENT
.”
Typical (but not all) signs of a depleted anode rod are as
follows:
• The majority of the rods diameter is less than 3/8”
• Significant sections of the support wire (approximately 1/3 or more
of the anode rod’s length) are visible.
If the anode rod shows signs of either or both it should be replaced.
NOTE: Whether re-installing or replacing the anode rod, check
for any leaks and immediately correct if found.
temperature-pressure relief valve operation
The temperature-pressure relief valve must be manually operated
at least once a year.
When checking the temperature-pressure relief valve operation, make
sure that (1) no one is in front of or around the outlet of the temperature-
pressure relief valve discharge line, and (2) that the water discharge will
periodic maintenance
