Technical data

SAVE A SERVICE CALL
15
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 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 10). 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 gas control must be turned off using the knob on top of the gas
control thermostat (refer to “Close Down Procedure” on page 35).
Phone Rheem Service or their nearest Accredited Service Agent to
arrange for 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.
HIGHER THAN EXPECTED GAS BILLS
Should you at any time, feel your gas account is higher than expected, we suggest you check the following
points:
Is the relief valve running excessively?
Refer to “Temperature Pressure Relief Valve Running” on page 15.
Is one outlet (especially the shower) using more hot water than you
think?
Refer to “Not Enough Hot Water” on page 14.
Is there a leaking hot water pipe, dripping hot water tap, etc?
Even a small leak will waste a surprising quantity of hot water and gas.
Replace faulty tap washers, and have your plumber rectify any leaking
pipe work.
Has there been an increase in hot water usage?
An increase in hot water usage will result in an increase in water heater operation.
Has your water heating tariff rate been increased by your gas retailer since your previous account?
IF YOU HAVE CHECKED ALL THE FOREGOING AND STILL BELIEVE YOU NEED ASSISTANCE,
PHONE RHEEM SERVICE OR THEIR NEAREST ACCREDITED SERVICE AGENT.