2. Emergency Shutdown - Rheem GHE119SS Use & Care Manual

A. DO turn off manual gas shut-off valve if water heater has been
subjected to over heating, fire, flood, physical damage or if gas
supply fails to shut off.
B. DO NOT turn on water heater unless it is filled with water.
C. DO NOT turn on water heater if cold water supply shut-off
valve is closed.
D. DO NOT store or use gasoline or other flammable vapors
and liquids, such as adhesives or paint thinner, in vicinity of
this or any other appliance. If such flammables must be used,
open doors and windows for ventilation, and all gas burning
appliances in vicinity should be shut off, including their pilot
lights, to avoid vapors igniting.
NOTICE: Flammable vapors may be drawn by
air currents from surrounding areas to the water
heater.
E. DO NOT allow combustible materials such as newspaper,
rags or mops to accumulate near water heater.
1. TEMPERATURE SETTINGS — The temperature is
adjusted to 120° F when shipped from the factory. To
meet commercial water use needs, it is adjustable up
to 185°F (85°C). However, water temperatures over
125°F (52°C) can cause severe burns instantly or
death from scalds. This is the preferred starting point
for setting the control for supplying general purpose
hot water.
Safety and energy conservation are factors to be
considered when setting the water temperature. The
most energy efficient operation will result when the
temperature setting is the lowest that satisfies the
needs consistent with the application.
DANGER
!
Hotter water increases the potential for hot water SCALDS.
When this water heater is supplying general purpose hot
water requirements for individuals, a thermostatically
controlled mixing valve for reducing point of use water
temperature is recommended. Contact a licensed plumb-
er or the local plumbing authority for further information.
Operation
SAFETY PRECAUTIONS
F. If there is any difficulty in understanding or following
the OPERATION or MAINTENANCE instructions, it is
recommended that a qualified person or serviceman perform
the work.
! CAUTION
Hydrogen gas can be produced in a hot water system
served by this water heater that has not been used for
a long period of time (generally two weeks or more).
HYDROGEN GAS IS EXTREMELY FLAMMABLE!! To
dissipate such gas and to reduce risk of injury, it is
recommended that the hot water faucet be opened for
several minutes at the kitchen sink before using any
electrical appliance connected to the hot water system.
If hydrogen is present, there will probably be an unusual
sound such as air escaping through the pipe as the
water begins to flow. DO NOT smoke or use an open
flame near the faucet at the time it is open.
Outlet water temperature will vary during normal operat-
ing cycles. Reliable temperature readings should be taken
shortly after main burner cycles off during a period of little
or no use.
2. EMERGENCY SHUTDOWN —
WARNING
!
Should overheating occur or the gas supply fail to shut
off, turn off the manual gas control valve to the appliance.
DO NOT use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect the appliance
and to replace any part of the control system or any gas control which has
been under water.
If the water heater has been subjected to fire or physical damage, turn
off gas at the manual gas control (shut-off) valve. DO NOT operate
the water heater again until it has been checked out by a qualified
service technician.
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