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Important
All cylinders have the potential to leak water. To minimise damage to other areas of your home, ensure that your
cylinder has been installed with a drip tray—the person doing the installation is responsible for this.
* Refer to the warranty terms and conditions in this guide for more information.
Safety messages
• Element cover
Do not remove the
element cover, this will
expose 230 V wiring, it
must only be removed by
an authorised person.
• Damaged components
If any component is
damaged, it must be
replaced by an authorised
person using Rinnai
replacement parts.
• Child supervision
Children should be
supervised to ensure they
do not play with any part
of the hot water system.
• Hot pipe work
Care should be taken not
to touch the pipe work
from the cylinder as this
could be very hot.
Safety devices
Your cylinder is fitted with a:
• Temperature & Pressure
Relief (TPR) valve that
ensures the water remains
at a safe pressure and
temperature.
• Automatic thermostat
to maintain water
temperature.
• Temperature override
cutout for heating
element.
6 | Rinnai Smart Cylinders MP indoor enamel: Owner & installer guide: 20431-D 04-17
The operation of the
thermal cutout can
indicate a dangerous
situation. Do not reset
the thermal cutout until
the water heater has been
serviced by a qualified
person.
Do not operate the system
unless all the safety devices
are fitted and are in working
order. It is also important that
you do not tamper or remove
any of these devices.
Hydrogen gas
If hot water is not
used for two weeks
WARNING
or more, a quantity of
hydrogen gas, which is highly
flammable, may accumulate
in the cylinder. To dissipate
safely, it is recommended a
hot tap (nonelectrical) be
turned on for two minutes at
a sink, basin or bath. During
this procedure there must be
no smoking, open flame, or
any other appliance operating
nearby.
Draining and filling the
system
This normally occurs during
installation or servicing and
must be carried out by an
authorised person.
Installation by a licensed
tradesperson
Only a licensed tradesperson
can install, adjust, maintain,
and service this water heater.
Any work carried out by a
non-licensed tradesperson
is illegal and will void any
warranty.
Turning the cylinder on/off
(we don't recommend this)
If you switch the
cylinder off for more
IMPORTANT
than 18 hours it will
lose all the water usage
history.
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