State GS6 50 YOMT - Manual (Page 24)

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the local water heater supplier or service agency for further information
concerning an Anode Replacement Kit and this chlorination treatment.
If the smelly water persists after the 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
is opened. There must be no smoking or open flame near the
faucet at the time it is open.
hIGh water teMperature shut off sYsteM
This water heater is equipped with an automatic gas Shut-off
system. This system works when high water temperatures are
present. Turn “OFF” the entire gas supply to the water heater.
The high temperature Shut-off is built into the gas control valve.
It is non-resettable. If the high temperature Shut-off activates,
the gas control valve must be replaced. Contact your gas supplier
or service agency.