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IMPORTANT INFORMATION & WARNINGS
If the valve discharges at high flows, especially at night, it may be as a result of the water pressure
exceeding the design pressure of the water heater. Ask your installer to fit a Pressure Limiting Valve
(PLV).
• NEVER replace the PTR valve with one which has a higher pressure rating than is
specified for your water heater.
WARNING
• If the valve discharges hot water at high flows until the water heater is cold and
then stops discharging until the water reheats there may be a serious problem.
Switch off the power supply in the meter box (the switch marked "WATER
HEATER" or "HOT WATER") or the insolating switch installed near the water
heater and contact Rinnai.
Expansion Control Valve (ECV) - if fitted
It is normal and desirable that this valve allows a small quantity of water to be discharged during the
heating cycle. If it discharges more than a bucket of water during a 24 hour period or discharges
continuously there may be another problem.
If the valve leaks continuously, try easing the valve gear for a few seconds. This may dislodge any
foreign matter and alleviate the problem. If this does not alleviate the problem contact Rinnai.
Operate the easing gear regularly to remove any lime deposits and to verify that it is not blocked.
Service
The system should be checked and serviced by an authorised person at least every 5 years.
The PTR valve must be replaced at intervals not exceeding five (5) years.
Rinnai has a service and spare parts network with personnel who are trained and equipped to give
the best service on Rinnai appliances.
Rinnai Australia
5
Operation / Installation Manual
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