Rinnai INFINITY User manual

INFINITY® gas hot water
heater internal ueing
Installation guide

Rinnai INFINITY®gas hot water heater flueing shall be
installed in accordance with:
- Manufacturer’s installation instructions
- Local regulations and municipal building codes
Installation, servicing and repair shall be carried out only
by authorised personnel.
Owner, please retain this guide for future reference.
Installer, please leave this guide with the owner.
Warning
Improper installation, adjustment, alteration, service or
maintenance can cause property damage, personal injury
or loss of life.
Important:
For more information about buying, using, and servicing
of Rinnai appliances call: 0800 RINNAI (0800 746 624)
Rinnai New Zealand Limited
105 Pavilion Drive, Mangere, Auckland
PO Box 53177, Auckland Airport, Auckland 2150
Phone: [phone]
Fax: [phone]
Email: [email protected].nz
Web: www.rinnai.co.nz
www.youtube.com/rinnainz
www.facebook.com/rinnainz

cnt:
Flueing options and suitability......................... 4
Flueing guidelines ........................................... 5
Flue spigots and condensate........................... 6
UV protectors.................................................. 7
Cutting to size ................................................. 7
Direct flueing using FFSSKIT............................ 8
Horizontal extension flueing........................... 8
Combination flueing ....................................... 9
Flue components ............................................ 10

4 | Continuous ow internal ueing guide: 11748-D 04-13
Direct flueing: For installations where the internal continuous flow unit is mounted directly on the
inside of an external wall with a maximum thickness of 430 mm (EF models) and 485 mm (XR/HD
internal models.
Horizontal extension flueing: The same as direct flueing with additional pipe required due to the
longer horizontal distance.
Vertical straight flueing: Installations where the internal unit is flued vertically through the roof.
Combination vertical and horizontal flueing: A combination of all the above.
Flueing options and suitability
12
3
4
Description
The flueing for internal
water heaters is a coaxial
design. It has a stainless
steel inner pipe to discharge
products of combustion and
a thermoplastic outer pipe for
air supply to the appliance.
The Rinnai INFINITY®internal
gas hot water heaters are room
sealed appliances—sealed
from the room as it takes
air for combustion from the
outside, and expels products
of combustion outside. No
ventilation in the space where
the water heater is installed is
required.
Each Rinnai INFINITY®water
heater is flued individually.
Suitability
The flueing components
outlined in this guide are
suitable for the following
Rinnai INFINITY®models
EFi250 REU-KM3237FFUD
HDi200 REU-VR2632FFUG
HDi200 REU-VRM2632FFUG
HD200i REU-VRM2632FFUG
HD200ia REU-VRM2632FFUC
XR26i REU-VR2632FFUG
XR26ia REU-VR2632FFUG
Female flue spigot (4913)
All of the ‘suitable’ models
have a female flue spigot at the
top of the unit.

Continuous ow internal ueing guide: 11748-D 04-13 | 5
Flue gases can reach temperatures up to 200 °C. The flue
terminal is to terminate in a location so as not to cause a
nuisance, in accordance with AS/NZS 5601.
Flueing guidelines
Flue support
Ensure the flue is fully
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 FFSSROOFCOWL and
FFSSPIPE1000.
Flue length
The chart highlights the
maximum flue length and
number of bends. It also shows
the difference between a short
and long flue.
For flues over 2 m there is a
DIP switch change required—
refer commissioning checklist
supplied with the appliance.
This increases the combustion
speed to overcome the
additional friction loses.
Vertical terminations.
To ensure products of
combustion are cleared,
adequate clearance from the
building is required.
The flue cowl should have a
500 mm clearance from any
part of the building. This also
applies to steeped and pitched
roofs, which should be clear of
the ridge line.
Lesser clearances may provide
perfectly adequate flue systems
depending on the installation.
Minimum clearances are shown
in AS/NZS 5601.
Multiple flues
Ensure minimum distances, as
shown are maintained.
Each terminal is to be
terminated at the same vertical
height.
Number of 90 °Bends
0 1 2 3 4
Flue Length (m)
1
2
3
4
5
6
7
9
11
13
15
Short flue
setting
Long flue
setting
Max. flue length
Min. clearance 500 mm to
nearest part of roof Min. 350 mm
Min. clearance 500 mm
Roof cowl
Min. 350 mm Min. 350 mm
Flue length table
Vertical terminal clearance Multiple flues - vertical flue clearance
Multiple flues - horizontal flue
clearance

6 | Continuous ow internal ueing guide: 11748-D 04-13
Flue spigots
The newer range of Rinnai
INFINITY®internal water
heaters all have the female flue
spigot attached to the top of
the unit.
The older units have a male
spigot attached, refer image.
If for some reason old flueing
has been installed, but a new
unit (refer REU numbers on p. 4)
has been purchased, OR an old
unit with older flueing needs to
be replaced with a newer Rinnai
INFINITY®internal water heater,
a retrofit male spigot will need
to be ordered.
Appliance spigot centres
The wall mounting brackets
on internal water heaters are
adjustable—refer image.
Condensate
The condensate trap collects
any condensate from the
flue system and prevents
condensate from entering
the water heater and causing
damage.
Condensate is a by-product of
gas combustion and is mildly
acidic. For this reason copper
tube and fittings MUST NOT be
used as it will corrode. Instead
Rinnai recommend plastic pipes
and fittings such as UPVC or PE.
Condensate XR/HD units
A condensate trap kit
(FFSSCOND) is required for flue
lengths over 1.5 m. If flueing is
less than 1.5 m, the spigot on
top of the unit is capped using
the drain tube cap supplied
with the unit. It is only to be
removed if the condensate kit is
connected.
Condensate: EFi250 units
The EFi250 model already has a
system to drain condensate, so
no additional components are
required.
Further information on the
condensate drain are detailed
in the installation guide of the
Rinnai INFINITY®unit.
Flue spigot centreline
from edge of appliance
175 mm (HDi)
230 mm (EFi)
Appliance flue spigot
centreline from wall
95~135 mm (HDi)
155~195 mm (EFi)
Female flue spigot - part 4913
Male flue spigot - part 4914
Drain tube cap
Flue spigots and condensate
Condensate EFi250 units
Only removed if a condensate kit trap is connected

Continuous ow internal ueing guide: 11748-D 04-13 | 7
UV roof protectors
Click together
Cut this end
Ensure the UV
protector sits outside
the decktite
The roof cowl comes with two
black UV injection moulded
pipe sections for covering and
protecting the white flue pipe
from UV damage.
To install, click together and
if required cut to length. If for
some reason any remaining
white pipe is exposed to UV,
this should be painted with a
suitable UV resistant coating.
Important
When installing the UV
protectors it is critical that
the protector sits outside
the decktite, not inside.
Weathertightness will be an
issue if the protector is installed
inside the decktite.
Cutting to size
Pipes overlap by approximately
37 mm. Once joined the
effective length reduces by
37 mm. This needs to be
factored when cutting to size.
Add 2 x 37 mm to extension pipe
X.
The inner pipe must always
extend 10 mm beyond the outer
pipe in the male end of the flue.
Always cut the male end of the
flue and not the female end.
Deburr sharp edges as this
could damage the gasket
resulting in a system that is no
longer air-tight.
10 mm
y
y + 10 mm
y
white (outer) stainless steel (inner)
X + 65 mm
10 mm
X 37 mm37 mm
female
male

8 | Continuous ow internal ueing guide: 11748-D 04-13
Direct ueing using FFSSKIT
For installations where the Rinnai INFINITY®gas hot water heater is mounted against an
internal wall and the flueing needs to be extended for a longer distance horizontally to
exit an external wall.
For installations where the Rinnai INFINITY®gas hot water heater is mounted directly on
the inside of an external wall with a minimum wall thickness of 430 mm (EFi model) and
485 mm (XR/HD internal models).
Horizontal extension ueing
FFSSKIT contains
- 90 ° bend
- horizontal flue terminal
- internal rubber white wall trim
- external rubber black wall trim
Horizontal flues MUST SLOPE
20 mm per metre to the
termination point. Ensure
condensate drains appropriately.
Use FFSSKIT as a starting point and
customise with flue pipe (FFSSPIPE1000).
More than one flue pipe (can be cut to
size) may be required. Total flue length
can be up to 13 m.
For flues over 2 m there is a DIP switch
change required, refer Commissioning
Checklist supplied with the appliance.
Condensate can be handled in two ways:
1. 2° fall to the termination point
(20 mm per metre), ensure
condensate drips will not cause
damage.
2. Condensate drains back to the
unit that includes a condensate
trap kit (FFSSCOND). Note: EFi
models already have a mechanism
for draining condensate so the
FFSSCOND is not required.
Approx.
150 mm
45 mm min.
580 mm max.
140 mm hole
430 mm max. EF
480 mm max. VT/HD/XR
2 ˚ fall
580 mm max.
430 mm max. EF
480 mm max. VT/HD/XR
2 ˚ fall
140 mm hole
Condensate direction
2 ˚ fall
to terminal
Condensate direction (2 ˚ fall to appliance)
To sanitary waste
FFSSCOND

Continuous ow internal ueing guide: 11748-D 04-13 | 9
Vertical straight ueing
Combination of both vertical and horizontal flueing. For XR and HD internal units, a
condensate trap is required for flue lengths over 1.5 m.
For installations where the Rinnai INFINITY®gas hot water heater needs to be flued
vertically through the roof.
FFSSROOFCOWL
(with roof protectors fitted)
FFSSPIPE1000
Additional lengths can be
added as required (can be
cut to size)
FFSSCOND
To sanitary waste
Combination ueing
FFSSROOFCOWL
(with roof protectors fitted)
FFSSPIPE1000
FFSSCOND
To sanitary waste
Condensate direction
(2 ˚ fall to appliance)
If starting horizontally and finishing horizontally, use FFSSKIT as a
starting point and customise.
If starting horizontally and ending vertically or vice versa, individual
flue components will need to be ordered. Flueing must start with a
FFSSBEND90 or FFSSPIPE1000 (can be cut to size).
For flues over 2 m there is a DIP switch change required, refer
Commissioning Checklist supplied with the appliance.
For XR/HD internal units, a condensate trap is required for flue
lengths over 1.5 m. Total flue length can be 15 m.
For flues over 2 m there is a DIP switch change required, refer
Commissioning Checklist supplied with the appliance.

10 | Continuous ow internal ueing guide: 11748-D 04-13
All the major flue components are constructed of a PVC outer and a stainless steel inner.
These have a zero clearance from combustibles. Flue components with the code SS
(stainless steel) cannot be used with older flue components.
Flue components
90 degree bend (FFSSBEND90)
5
15
80
85
114
130
64.5
66
45 degree bend (FFSSBEND45) - sold as a pair
85
16666
15
80
5
165
64.5
5176
15
80
92
85
As a 90˚offset As a 45˚offset
Black UV roof protectors
Comes with the roof cowl.
Dimensions:
Length approx. 197 mm
Joined length approx. 347 mm
Diameter 140 mm
White and black wall trims - comes with the FFSSKIT
225
125
Thickness 1 mm
Condensate trap kit (FFSSCOND)
Required for vertical lengths over
1.5 m—HD and XR internal
installations only.
Hose is approx. 516 mm
I.D = 20 mm
End-to-end approx. 180 mm

Continuous ow internal ueing guide: 11748-D 04-13 | 11
Roof cowl for vertical installations (FFSSROOFCOWL)
953 ± 5 mm
483 ± 5 mm
Black powder coat
cast aluminium
Black PVC plastic
White PVC plastic
Can be cut to size.
Includes two black injection UV roof protectors
for covering and protecting the white flue pipe
from UV damage. Also includes a flue pipe clamp
(pictured below) to support the flue.
Inner = 80 mm
Outer = 125 mm
Stainless steel inner protrudes from base of roof
cowl by approx. 10 mm
Direct flue kit for horizontal installations (FFSSKIT)
Flue pipe (FFSSPIPE1000)
Can be cut to size.
Includes a Munzing ring (not pictured) to support
the flue.
Dimensions:
Inner = 80 mm
Outer = 125 mm
End to end dimension = approx. 778 ± 10 mm
Wall trim to wall trim = approx. 480 ± 5 mm
Terminal centre to base = approx. 120 ± 5 mm
Terminal protrudes approximately 150 mm from the
wall.
UP
975 515
125
80
85
Can be cut to size.
Includes a Munzing ring to support the flue.

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11748-D 04-13