Rinnai Infinity XR26ia User manual

Rinnai INFINITY® gas hot
water heater internal ueing
Installation guide
The flueing components outlined in this guide are suitable for the following Rinnai INFINITY models:
Current models
• EFi250 (REU-KM3237FFUD)
• HDi200 (REU-VR2632FFUG)
Discontinued models
• HD200i (REU-VM2632FFUC)
• HDi200 (REU-VM2632FFUC)
• HD200ia (REU-VR2632FFUG)
• XR26i (REU-V2632FFUG)
• XR26ia (REU-VR2632FFUG)

Rinnai INFINITY®gas hot water heater flueing shall be
installed in accordance with:
- Manufacturer’s installation instructions
- Current AS/NZS 5601.1 Gas Installations
- Local regulations and municipal building codes
Installation, servicing and repair shall be carried out only
by authorised personnel.
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
Condensate ..................................................... 6
UV protectors.................................................. 7
Cutting to size ................................................. 7
Direct flueing using FFSSKIT............................ 8
Horizontal extension flueing........................... 8
Combination flueing ....................................... 9
Flue components ............................................ 10

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Flueing options and suitability
Direct flueing
For direct flue installations through an external wall using the direct flue kit FFSSKIT
maximum wall thickness 430 mm (EFi250) and 485 mm (HDi200).
Horizontal extension flueing
For flue installations through an external wall using the direct flue kit FFSSKIT and additional
lengths of pipe.
Vertical straight flueing
Installations where the internal unit is flued vertically through the roof.
Combination flueing
Installations using a combination of horizontal and vertical flueing.
1
2
4
3
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.
Each Rinnai INFINITY water heater is flued individually, refer flueing options diagram below.
Please note
The installation and flue component images throughout this guide refer to our current
internal models only HDi200 and EFi250). Please adapt the information as necessary if
you are referencing this document for the discontinued XR26i internal or HD200i internal
models.

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Flueing guidelines
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.
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 FFSSROOFCOWL and FFSSPIPE1000.
Flue length
The chart below highlights the maximum flue
length and number of bends.
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 below
are maintained.
Each terminal is to be terminated at the same
vertical height, refer images below—please
note these images show our older style
terminals, which have since been updated.
Number of 90 °Bends
0 1 2 3 4
Flue Length (m)
1
2
3
4
5
6
7
9
11
13
15 Max. flue length
Older style roof cowls all
terminating at the same
height
Older style horizontal
terminals all terminating
at the same height
FFSSROOFCOWL
FFSSKIT
A
A: HDi200 350 mm
A: EFi250 470 mm
A
A A
Min. clearance 500 mm

6 | Continuous ow internal ueing guide: 11748-E 05-15
175 mm (HDi200)
230 mm (EFi250)
Female flue spigot - part 4913 Male flue spigot - part 4914
Flue spigots
The Rinnai INFINITY internal water heater models noted on the front cover have a FEMALE flue
spigot attached to the top of the unit. This differs to the older units, which have a MALE flue spigot
attached. This is relevant if you are trying to fit a newer model Rinnai INFINITY* into ‘old’ flueing
the male flue spigot will need to be ordered. Please contact Rinnai for further information.
Condensate
The condensate trap collects any condensate from the flue 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 recommends plastic pipe and
fittings such as UPVC or PE.
Condensate: HD200 and XR26 internal models
A condensate trap kit (FFSSCOND) is required for flue lengths over 1.5 m. If flueing is less than
1.5 m, the flue spigot on the top of the unit is capped using the drain cap tube supplied with the
unit. The drain cap is only removed if the condensate kit is connected..
Condensate: EFi250 internal models
The FFSSCOND is not needed for the EFi250 as there is a different method for draining
condensate (that doesn’t require the additional FFSSCOND component). For further information
refer to the Rinnai INFINITY installation guide, section ‘EF models: Condensate Drain’.
Appliance spigot centres
95~135 mm (HDi200)
155~195 mm (EFi250)
Flue spigot centreline
from edge of appliance
Flue spigot centreline
from wall
* Not applicable if installing an EFi250 model, this MUST USE the FFSS (stainless steel) flue components detailed in this guide.
The wall mounting brackets are adjustable by
40 mm. Adjusting the mounting bracket also
adjusts the spigot centre.

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UV roof protectors
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
FFSSROOFCOWL
Male end up
Female
end down
Cut this end
if required
Ensure the UV
protectors sit
outside the decktite

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Direct ueing using the FFSSKIT
For installations where the Rinnai INFINITY is mounted directly on the inside of
an external wall with a maximum wall thickness of 430 mm (EFi250) and
485 mm (HDi200).
FFSSKIT contains
- 90 ° bend
- horiz. flue terminal
- int. rubber white wall trim
- ext. rubber black wall trim
Horizontal flues MUST
SLOPE 20 mm per metre
to the termination point.
Ensure condensate drains
appropriately.
Approx.
150 mm
45 mm min.
580 mm max.
140 mm hole
430 mm max. EFi250
485 mm max. HDi200
2 ˚ fall
580 mm max.
430 mm max. EFi250
485 mm max. HDi200
2 ˚ fall
140 mm hole
Horizontal extension ueing
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.
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.
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
HDi200 unit will need a condensate
trap kit (FFSSCOND).
Condensate direction
2 ˚ fall
to terminal
Condensate direction (2 ˚ fall to appliance)
To sanitary waste
FFSSCOND (HDi200 only)

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Vertical straight ueing
For installations where the Rinnai INFINITY 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
(HDi200 only)
To sanitary waste
For HDi200 units, a condensate trap (FFSSCOND) is
required for flue lengths over 1.5 m. Total flue length
can be 15 m.
Combination ueing
Combination of vertical and horizontal flueing. HDi200 unit will need a
condensate trap kit (FFSSCOND).
FFSSROOFCOWL
(with roof protectors fitted)
FFSSPIPE1000
FFSSCOND (HDi200 only)
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).

10 | Continuous ow internal ueing guide: 11748-E 05-15
Rinnai INFINITY ue components
All the major flue components are constructed of a PVC outer and a stainless
steel inner. These have zero clearance from combustibles.
90 degree bend (FFSSBEND90) 5
10
80
85
114
130
64.5
66
45 degree bend (FFSSBEND45) - sold as a pair
(As a 90° OFFSET)
85
166 66
10
80
5
165
64.5
(As a 45° OFFSET)
5176
10
80
92
85
Condensate trap kit (FFSSCOND) for the HDi200
Hose is approx. 516 mm
I.D = 20 mm
End-to-end approx. 180 mm
Flue pipe (FFSSPIPE1000) - can be cut to size, includes a Munzing ring to support the flue
10
125
80
980
UP
5
85
All dimensions are in mm.
The FFSSCOND is not needed for the EFi250 as there is a different method to drain condensate (that doesn’t require additional flue
components). For further information refer to the Rinnai INFINITY installation manual.