Continuous Flow Water Heater Operation Guide 04-12
|
7
General information
Discolouration of flue outlets -
EF external models
The colour of the flue outlet
may change over time due to
condensate in the exhaust gases.
This is normal. The discolouration
will not damage the unit, and will
not affect performance of the
water heater.
Frost kits
Frost protection is fitted as
standard on all models. Frost
protection operates automatically,
as required, whenever the
appliance is connected to the
electric power supply.
If power has failed and there is risk
of damage from frost, turn off the
gas supply to the unit and open a
tap slightly to allow flow through
the unit. This may prevent damage
from freezing.
If the appliance is not going to
be used for an extended period
and the electric power supply is
disconnected, turn off the water
and gas supplies and arrange for
your plumber to drain all water
from the appliance to prevent frost
damage. If for practical reasons
a plumber is unable to drain your
system, we have an instruction
sheet on how to drain the unit at
the back of this guide.
Installation by a licensed
tradesperson
Improper installation, adjustment,
service, or maintenance can
cause serious injury, property
damage, or death. Please ensure
your installation is completed by a
licensed gasfitter and plumber.
Safety devices
Your Rinnai continuous flow water
heater has the following safety
devices:
-
Flame failure
-
Boil-dry protection
-
Overheat protection (OHS)
-
Fusible link
-
Pressure relief valve
-
Combustion fan rpm check
Servicing
Rinnai has a service and spare parts
network with personnel who are
fully trained and equipped to give
the best advice on your Rinnai
appliance. If your appliance needs
servicing, please call Rinnai
(0800 746 624) from a land line
and select option one for a service
centre in your area.
For reliable operation Rinnai
continuous flow water heaters
in domestic applications should
be serviced every three years,
including inspection of the flue
system (if installed). A service
record has been provided at
the back of this guide. For
commercial use annual servicing
is recommended. Rinnai has a
recommended ‘Commercial
Maintenance and Servicing
Schedule’. This is available on
request, or via our website.
Regular servicing is not covered
by the Rinnai warranty. Do not
attempt to carry out any service
work other than that mentioned in
the troubleshooting section. If you
have any other faults or problems,
please contact your installer or
Rinnai.
Solar installations
There is a
recommended
system layout for
Rinnai continuous
flow water heaters
used in solar
installations. It is important your
installer configures your solar
system correctly as water heaters
in solar installations produce
higher than normal temperatures.
Rinnai water controllers cannot be
used with Rinnai continuous flow
water heaters in solar installations
as the hot water does not always
pass through the continuous flow
unit.
Preset temperatures
The Rinnai continuous flow
water heaters are factory preset
to a temperature limit of 55 °C ,
excluding one commercial model,
the Infinity HD200 external.
Temperature controllers are
available to allow precise digital
temperature control—a great
safety feature if you have young
children. Controllers can be
fitted at any time (except in solar
installations) after installation of
the hot water unit.
Water flow
The flow will
vary slightly
depending on
the incoming
water
temperature
and temperature selected. For
example, the water flow will be
higher at 43 °C than at 55 °C.
There is also a minimum flow rate
required for the continuous flow
unit to start, so if a hot water tap is
only opened a fraction, there may
not be enough flow to start the
unit.
Flue outlet
Filter
Drain
Gas
Valve
Gas
Cold
Hot
Turn Water Off
Turn Gas Off
Drain Water
43°C
55°C
