Flueing Guidelines - Rinnai INFINITY N56kWi Installation Manual

Flueing guidelines

The flue terminal is to terminate in a location so as not to cause a nuisance, in accordance with
AS/NZS 5601.
Multiple flues
Ensure minimum distances, as
shown below, are maintained.
Each terminal is to be
terminated at the same height,
refer images below—please
note these images show older
style terminals, which have
since been updated.
Vertical PP flue cowl
500 500
355
500 500
Horizontal PP thru-wall kit
Older style roof cowls and
horizontal terminals all terminating
at the same height
Flue support
Ensure the flue is supported
independently of the appliance
by use of suitable clips or
brackets in accordance with
AS/NZS 5601. Appropriate
standoff brackets are supplied
with each roof cowl and flue
pipe.
Flue length
The chart below highlights
the maximum flue length and
number of bends. One 90°
bend equates to 3 m, and one
45° bend equates to 1.1 m.
If you need to extend beyond
20 m please contact Rinnai
as we have another flueing
option available.
Number of 90 ° Bends
0 1 2
1
2
3
4
5
6
7
8
9
11
12
14
15
17
18
20
Flueing table showing maximum
flue length and maximum number
of bends
Rinnai INFINITY N56kWi concentric flue installation guide 12746-B 02-20 | 5
Vertical terminations
To ensure products of
combustion are cleared,
adequate clearance from
the building is required. The
vertical flue cowl should have
a 500 mm clearance from any
part of the building. This also
applies to steeped and pitched
roofs, where the flue cowl
should be 500 mm clear of the
ridge line. An adequate flow of
fresh air must exist around the
flue cowl following installation.
Minimum clearances are
shown in AS/NZS 5601.1.
White pipe UV protection
Where appropriate, all
components must be
protected from UV. The
horizontal terminal (black
3 4
section) is UV resistant. The
vertical terminal is provided
with two black UV protectors.
Anything else exposed to UV
should be painted.