Regency 600PHSHEATER, Инструкция по эксплуатации

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15
THERMAL EXPANSION
Water supply systems may, because of such events as high line
pressure, frequent cut-offs, the effects pf water hammer among
others, have installed devices such as pressure reduing valves,
check valves, back flow preventers, etc. to control these types of
problems. When these devices are not equipped with an internal
by-pass, and no other measures are taken, the devices cause the
water system to be closed. As water is heated, it expands(thermal
expansion) and closed systems do not allow for the expansion of
heated water.
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 temperature-pressure relief valve
is reached, the valve will relieve the excess pressure. The
temperature-pressure relief valve is not intended for the constant
relief of thermal expansion. This is an unacceptable condition and
must be corrected. It is recommended that any devices installed
which could create a closed system have a by pass and/or the
system have an expansion in the water system. Expansion tanks
are available for ordering through a local plumbing contractor.
Contact the local water heater supplier or service agency for
assistance in controlling these situations.
STRANGE SOUNDS
Possible noises due to expansion and contraction of some metal
parts during periods of heat-up and cool-down do not necessarily
represent harmful or dangerous conditions
OPERATION CONDITIONS
WATER ODOR
In each water heater there is installed at least one anode rod(see
parts section) 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.
Smelly water may be eliminated or reduced in some water heater
models by replacing the anode(s) with one of less active material,
and then chlorinating the water heater tank and all hot water
lines. Contact the local water heater supplier oe service agency
for further information concerning an Anode Replacement and
chlorination treatment; we can only suggest that chlorination or
aeration of the water supply be considered to eliminate the water
problem.
Do not remove the anode leaving the tank unprotected. By doing
so, all warranty on the water heater tank is voided.
"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 at the time it is open.
HIGHER WATER TEMPERATURE SHUT OFF SYSTEM
A non-adjustable high temperature limit control operates before
steam temperatures are reached. The high limit switch must be
reset manually when it operates. BECAUSE THE HIGH LIMIT
OPERATES ONLY WHEN ABNORMALLY HI GH WATER
TEMPERATURES ARE PRESENT, IT IS IMPORTANT THAT A
QUALIFIED SERVICE AGENT BE CONTACTED TO DETERMINE
THE REASON FOR OPERATION BEFORE RESETTING.
•
Turn off and unplug the water heater. Do not attempt to
reset thermostat with power on.
•
Remove the front panel, see "Removing Front Panel" in the
Periodic Maintenance section.
•
Removing the insulation to expose the reset button.
•
Reset the high limit by pushing in the red button.
•
Replace the insulation so that ii completely covers the
thermostat and element.
•
Replace the front panel.
•
Plug in and turn on the water heater.
FOR YOUR INFORMATION
CAUTION
Property Damage Hazard
•
Avoid water heater damage.
•
Install thermal expansion tank if necessary.
•
Do not apply heat to cold water inlet.
•
Contact qualified installer or service agency.
WARNING
Explosion Hazard
•
Flammable hydrogen gases may
be present.
•
Keep all ignition sources away
from faucet when turning on hot
water.
WARNING
•
Before removing any access
panels or servicing the water
heater, make sure the electrical
supply to the water heater is
turned "OFF".
•
Failure to do this could result in
death, serious bodily injury, or
property damage.