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18
TEMPERATURE PRESSURE RELIEF VALVE RUNNING
• Normal Operation
It is normal and desirable this valve
allows a small quantity of water to
escape during the heating cycle.
However, if it discharges more than
a bucket full of water in 24 hours,
there may be another problem.
• Continuous dribble
Try gently raising the easing lever
on the relief valve for a few
seconds (refer to
“Temperature
Pressure Relief Valve”
on page 14).
This may dislodge a small particle
of foreign matter and clear the fault.
Release the lever gently.
• Steady flows for long period
(often at night)
This may indicate the mains water
pressure sometimes rises above
the designed pressure of the water
heater. Ask your installing plumber
to fit a pressure limiting valve.
Warning: Never replace the relief valve with one of a higher pressure
rating.
• Heavy flows of hot water until the water heater is cold - then stops
until water reheats
The water heater must be switched off at the isolating switch or
switchboard. Phone your nearest Rheem Service Department or Accredited
Service Agent to arrange for an inspection.
EXPANSION CONTROL VALVE RUNNING
If an expansion control valve is fitted in the cold water line to the water heater
(refer to page 36) it may discharge a small quantity of water instead of the
temperature pressure relief valve on the water heater. The benefit is that
energy is conserved as the discharged water is cooler.