Arriva/Evolve flue installation guide: 10726-I 09-21
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Through-wall vertical flueing
These types of installations are rare, but have been used on the odd occasion where
traditional flueing is not possible. As a large portion of the flue will be visible—check
with the homeowner that this is okay. In this example the flue length can be up to
7.5 m long and contain one 90° bend.
Condensate trap
The supplied condensate tube (750 mm) will not be long enough for this type of installation,
a separate tube will need to be used. This needs to be connected back through to the heater
(separate hole required), which needs to be weathertight. Another option is to drain the condensate
to a waste drain / gully trap through a PVC line. For more information please contact Rinnai.
Steps for creating horizontal through-wall flueing
1. Create the wall penetration. The minimum diameter is 80 mm to non-combustible surfaces
such as brick, and 100 mm to combustible surfaces such as plaster. Allow for a 2° fall back to
the heater.
2. Create the 90° bend using the ESBEND kit.
3. Join the condensate trap to the 90° bend.
4. Fit lengths of ESPIPE900 as required.
5. Create a vertical roof terminal.
6. Secure joints between flue components through the outer pipes with screws.
7. Connect the condensate tube to the heater. You will need to drill a separate hole to run the
condensate tube back to the heater. Connection points will differ between the Arriva and the
Evolve. For the Arriva refer to p.22 in this guide, for the Evolve refer to p.25.
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2
3
4
5
5
1. Wall plate
2. 2° fall back to the heater
3. ESBEND
4. Condensate trap
5. Wall straps
Flue components:
•
Direct flue kit (ASPDFK)
•
45° bends (ESBEND)
•
Condensate trap (ESCONDK)
•
Flue pipe (ESPIPE900)
•
Roof cowl (ESROOFCOWL)
Flue components required for through-wall flueing
As there is a vertical component in the installation, condensate needs to be drained back
towards the fire, this requires the ASPDFK component to be angled 2° back to the unit.
