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Rinnai Australia 4 Operation/ Installation Manual

Expansion Control Valve (ECV) - if fitted

Operate the easing lever on the expansion control valve once every six months. It is very important

you raise and lower the lever gently.

Servicing and Repair

Our servicing network personnel are fully trained and equipped to give the best on your Rinnai

appliance. If your appliance needs service, ring one of the service contact numbers on the back of this

booklet.

The pressure and temperature relief valve and expansion control valve must be checked for

performance or replaced by an authorised person at intervals not exceeding 5 years or more

frequently in areas where the water is classified as scaling water (see 'Water Quality').

If the electric conduit, power supply cord or plug to hot water system is damaged, they must be

replaced by an authorised person in order to avoid a hazard. The power supply cord and plug must

be replaced by a genuine replacement part available from Rinnai.

Insufficient or no hot water

Is there electricity supply to the water heater?

• Check to ensure the electric isolating switch(es) at the switchboard (usually marked "Hot

water" or "Water heater") is switched 'ON'.

• Check to ensure that the electric fuses for hot water at the switchboard are intact.

Is there insufficient gas supply for gas booster?

• Check gas is available and turned 'ON'.

• Check the isolation valve in the gas line is opened.

• Refer to your plumber to ensure the gas line has been purged of air after installation.

Are you using more hot water than you think?

• Often end users are surprised at the amount of hot water used, especially when

showering. If the amount of hot water used during the day exceeds the storage capacity of

the hot water system, it is likely that there will be insufficient hot water. Has your plumber

install water saving fixture and/or flow control or pressure limiting valves to reduce

consumption.

Are hot water system valves discharging excessively?

• Refer to the section "hot water system valves discharging excessively".

High gas bills

• If you think your gas bill is too high, investigate the following:

• You may be using more hot water than you think. This applies especially to showering.

Review hot water usage, especially the time taken for showering, and investigate the use

of flow control valves or 'water saving' shower roses. Investigate recent changes to hot

water usage patterns.

• Water heater valves may be discharging excessively. Refer to the section "hot water

system valves discharging excessively".

• There may be hot water leakages in hot water pipes or taps. Have these checked and

rectified by a plumber.

If, after investigating the above, you still require assistance contact Rinnai.

Water Heater Valves Discharging Excessively

Pressure & Temperature Relief (PTR) Valve

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 dribbles continuously, try easing the valve gear for a few seconds as described above.

This may dislodge any foreign matter and alleviate the problem.

IMPORTANT INFORMATION & WARNINGS

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