Installation guide

Rinnai Continuous Flow Water Heating Specication Guide 02-13 | 15
Positioning continuous ow units
In order to provide safe and effective water heating it is important to adhere to all
relevant gas installation standards. Prior to purchasing or siting an appliance check the
guidelines detailed in this section.
Internal models
Internal models are
designed for indoor
installations only.
They may be installed
in an enclosure if the
requirements of
AS/NZS 5601.1 are satisfied.
An enclosure is defined as a
compartment, enclosed area or
partitioned off space primarily
used for the installation of the
appliance.
They must be mounted on a
vertical structure with the water
and gas connections on the
underside pointing downwards.
External models
External models are
designed for outdoor
installations only. They
must be located in an
above ground open-air
situation with natural
ventilation, without stagnant
areas, and where gas leakage and
products of combustion are rapidly
dispersed by wind and natural
convection.
They must be mounted on a
vertical structure with water and
gas connections on the underside
pointing downwards. Rinnai
recommend a clearance from the
ground of 1.5 m to give enough
clearance for the pipe work, and to
safely expel flue gases. This differs
to the AS/NZS 5601.1 of 300 mm.
Multiple external units
When multiple units of the
same model are installed on the
same vertical face, with the flue
terminals at the same height, they
can be installed next to each other
as shown.
All models
The appliance must be placed
as close as possible to the most
frequently used hot water outlet
or outlets to minimise the delay for
hot water.
For installations where the distance
between the water heater and
the outlets is considerable, a
flow and return system can be
used to minimise the waiting
time for hot water delivery.
Alternatively, multiple appliances
can be strategically placed to serve
different outlets.
Electrical supply
An AC 230 V, 10 Amp earthed
power point must be provided
adjacent to the appliance. For
outdoor installations, this power
point must be weatherproof. It
must be clear of the gas and water
connections to the appliance and
also the flue exhaust and water
pressure relief valve. The power
cord of continuous flow units is
1.5 m.
Easy access to units
All continuous flow water heaters
must be installed to ensure access
can be gained, for servicing and
repair, without hazard or undue
difficulty. Sufficient clearances shall
allow access and removal of all
serviceable components.
For internal units we recommend
a 600 mm clearance for servicing
access. This can be reduced to
50 mm if installed in a cupboard.
Appliances should not be mounted
higher than 3.5 m above the
ground or floor level unless the
customer can arrange permanent
and safe access, or can provide
another means of access such as
scissor or boom lifts.
Noise consideration
Some people are susceptible to
low level noise. Rinnai Infinity units
operate at approximately
49 dB(A). This needs to be
considered if siting the appliance
near a bedroom.
Clearances required for flue
terminals
All Rinnai continuous flow water
heaters must be located so that
the flue terminal exits the building
at a suitable point—refer AS/NZS
5601.1 Fig 6.2. A diagram to assist
in determining where, and if, an
external model can be installed is
shown on the next page.
75 mm
min.
75 mm
min.
600 mm min.
(50 mm min if in a cupboard)