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13
TEMPERATURE PRESSURE RELIEF VALVE RUNNING
• Normal Operation
It is normal and desirable that this
valve allows a small quantity of
water to escape during the heating
cycle. However, if the discharge is
deemed excessive (more than 2%
of hot water used), 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 9). 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.
NEVER replace the relief valve with one of a higher pressure rating.
• Heavy flows of hot water until water heater is cold - then stops until
water reheats
The water heater must be switched off at the 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 25) 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.