A.O. Smith Residential Power Vent Gas Water Heaters with Hot Surface..., Инструкция по эксплуатации

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Periodic Maintenance (cont’d)
32
Failure to install and maintain a new properly listed tem-
perature-pressure relief valve will release the manufacturer
from any claim which might result from excessive tempera-
ture or pressure.
Temperature-Pressure Relief
Valve Operation
The temperature-pressure relief valve must be manually
operated at least once a year.
TEMPERATURE-PRESSURE
RELIEF VALVE
DISCHARGE PIPE
Housekeeping
Vacuum around base of water heater for dust, dirt, and lint
on a regular basis.
WARNING
INSTALLED IN SUITABLE AREA: To insure sufficient
ventilation and combustion air supply, proper clear-
ances from the water heater must be maintained. See
“Locating the New Water Heater” section. Combustible
materials such as clothing, cleaning materials, or
flammable liquids, etc. must not be placed against or
adjacent to the water heater which can cause a fire.
WARNING
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 manually discharged
will not cause any property damage because the water
may be extremely hot.
If after manually operating the valve, it fails to complete-
ly reset and continues to release water, immediately close
the cold water inlet to the water heater, follow the drain-
ing instructions, and replace the temperature-pressure
relief valve with a new one.
WARNING
If the temperature-pressure relief valve on the appliance
weeps or discharges periodically, this may be due to
thermal expansion. Your water heater may have a check
valve installed in the water line or a water meter with a
check valve. Consult the water supplier and/or plumbing
contractor for further information. Do not plug the tem-
perature-pressure relief valve.
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.
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.
L.P. Gas Control Valve & Burner
Assembly Replacement Information
WARNING
PROPANE (L.P.) GAS CONTROL VALVE AND BURNER
ASSEMBLY REPLACEMENT INFORMATION.
For Propane (L.P.) Gas Models Only:
Your water heater is equipped with a Propane (L.P.) gas
control valve and a main burner assembly with left hand
threads for the following fittings and their connections.
(1) The connection between the manifold and the gas
control valve (A to B) are left hand threads.
(2) The connection between the main burner orifice
and the manifold (C to D) are left hand threads.
For ordering these replacement parts, please refer to the
“Repair Parts” section of this manual.
B
A
C
D