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1 Clause G12.3.9, Acceptable Solution G12/AS1 6.14.32
2 Legionella is a bacterium that can cause Legionnaires’ disease―a severe form of pneumonia
Safety devices
Your Rinnai hot water system is tted 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 the heating
element.
DANGER
The operation of the thermal cutout can
indicate a serious situation. Do not reset the
thermal cutout until the system has been
serviced by a qualied person.
Do not operate the system unless all the safety
devices are tted and are in working order.
It is also important that you do not tamper or
remove any of these devices.
Element cover
Do not remove the element cover as this will
expose 230 V wiring. It must only be removed
by an authorised person.
Damaged components
If any component is damaged, it must only be
replaced by an authorised person using Rinnai
replacement parts.
Hydrogen gas
If hot water is not used for two weeks or more,
for example after a holiday, a hot water cylinder
with an anode can produce hydrogen gas,
which is highly ammable. To remove any
potential gas buildup it is recommended a hot
tap be turned on for two minutes at a sink,
basin, or bath. During this procedure there
must be no smoking, open ame, or other
appliance operating nearby.
Location and positioning
The Enviroo is designed primarily for an
outdoor installation. It may be possible to install
the system internally if the proposed location is
not an occupied space as dened by
AS/NZS 5149. Please note that internally
installed units will need adequate ventilation
as the appliance has a cooling eect on the
installed space, operating noise should also
be considered. Rinnai strongly recommends
discussing the installation with a qualied
installer prior to installation.
• DO NOT install the unit in a location that
may be exposed to combustible gas leaks.
If combustible gas accumulates around the
unit, it may cause a re.
• DO NOT install the unit where noise may
be a nuisance, such as near bedrooms or
neighbouring properties. Do not place any
objects on top of the unit, this could cause
excessive vibration and increase noise
levels.
• DO NOT install the unit where it will be
directly exposed to sea wind and salt spray,
this will signicantly reduce the durability of
the unit.
Draining and lling the system
This normally occurs during installation or
servicing and must be carried out by an
authorised person. Draining water from the
heat pump unit is necessary if the power will be
shut o to the unit, and snow or frost conditions
are expected. Arrange for an authorised person
to carry out this task.
Installation by a licensed tradesperson
Only a licensed tradesperson can install,
adjust, maintain, and remove this hot water
system. Any work carried out by a non-licensed
tradesperson is illegal and will void any
warranty.
Legionella
To meet the New Zealand Building
Code requirement
1
to disinfect water
for legionella bacteria
2
, the system has
an auto disinfection cycle.
If the water temperature is < 70 °C over a 7-day
period, the heat pump (with the electric element
on) will start disinfection. During disinfection,
the symbol (as shown above) will flash for two
seconds then light up, water will be heated up
to 70 °C and maintained at 65-70 °C for at least
30 mins. After 30 minutes it will exit disinfection.
If the water cannot reach 70 °C the heat pump
will run in disinfection mode for two hours then
exit.
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