Rheem GAS DOMESTIC OUTDOOR WATER HEATER 用户手册

 

9 

 
TEMPERATURE PRESSURE RELIEF VALVE 
This valve is near the top of the water 
heater 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 indicate a 
problem with the water heater (refer to 

“Temperature 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 once 
every six months. It is very important 
you raise and lower the lever gently. 
 
DANGER – Failure to do this may result 
in the water heater cylinder failing. 
 
If water does not flow freely from the 
drain line when the lever is lifted, then 
the water heater should be checked by 
the Rheem Service Department or their 
Accredited Service Agent. 
 
The temperature pressure relief valve should be checked for performance or 
replaced at intervals not exceeding 5 years, or more frequently in areas where 
there is a high incidence of water deposits (refer to 

“Water Supplies”

 on 

page 30).