Rheem 610340 Owner's Manual And Installation Instructions page 8

MAINTENANCE REQUIREMENTS
TEMPERATURE PRESSURE RELIEF VALVE
This valve is near the top of the storage tank and is essential for its
safe operation. It is possible for the valve to release a little water
through the drain line during each heating period. This occurs as the
water is heated and expands by approximately 1/50 of its volume.
Continuous leakage of water from the valve and its drain line may
"Temperature
indicate a problem with the water heater (refer to
Pressure Relief Valve Running"
on page 12).
Warning: Never block the outlet of this valve or its drain line for
any reason.
Operate the easing lever on the temperature pressure relief valve
"Minor Maintenance Every Six
once every six months. Refer to
Months" on page 7. It is very important the lever is raised and
lowered gently.
Warning: Failure to do this may result in the storage tank
cylinder failing.
Warning: Exercise care to avoid any splashing of water, as water
discharged from the drain line will be hot. Stand clear of the drain
line's point of discharge when operating the valve's lever.
storage
tank
If water does not flow freely from the drain line when the lever is
lifted, then the storage tank must be checked. Phone Rheem
Service or their nearest Accredited Service Agent.
lift until water
The temperature pressure relief valve should be replaced at
flows from the drain
intervals not exceeding five (5) years, or more frequently in areas
drain line –
line
"Water
where there is a high incidence of water deposits (refer to
lower gently
Supplies"
on page 9).
EXPANSION CONTROL VALVE
In many areas, including South Australia, Western Australia and scaling water areas, it is mandatory an
expansion control valve is fitted to the cold water line to the water heater. The expansion control valve may
discharge a small quantity of water from its drain line during the heating period instead of the temperature
pressure relief valve on the water heater.
"Minor Maintenance
Operate the easing lever on the expansion control valve once every six months. Refer to
Every Six Months" on page 7. It is very important the lever is raised and lowered gently. If water does not
flow freely from the drain line when the lever is lifted, then the water heater should be checked by Rheem
Service or their nearest Accredited Service Agent. The expansion control valve should be checked for
performance or replaced at intervals not exceeding five (5) years, or more frequently in areas where there is
a high incidence of water deposits.
8