Flue System - Rinnai One 11i Operation And Installation Manual

2.6.6 FLUE SYSTEM

The flue system must be carried out by competent personnel, authorized according to the law, following the
manufacturer's instructions and respecting the provisions of the law and the technical regulations in force.
Make sure that the flue terminal is always free from obstructions and external obstacles and that it is protected to avoid
contact burns.
The OUTDOOR model is homologated for operation without exhaust system: it is NOT allowed to connect ANY flue
system to the exhaust of this model. The only element allowed is the flue 'side-diverter' accessory (code UOP-26) to
laterally divert the exhaust.
The INDOOR model must be installed by AlWAYS connecting a Rinnai homologated flue system: they cannot be
operated without having correctly installed the flue system. The indoor unit's exhaust system is considered as part of
the appliance: it is only possible to install certified and tested exhaust systems in combination with the appliance
The flue system type must correspond to one of the many mentionned on the data plate label (located on the side of
the appliance). Rinnai provides a specific inlet/exhaust system for the appliance. Detailed installation instructions are
supplied with the flue elements. For more information contact Rinnai
Coaxial flue: in the upper part, the appliance is provided with a coaxial connection (Ø60/100mm) for the intake of
combustion air (external pipe) and for the expulsion of combustion products (central pipe). It is possible to connect
pipes to extend the flue system. The ducts (coaxial extensions and curves) must have a diameter not inferior to the
initial connection, be made of materials suitable for the appliance's flue gas temperatures and have sealed 'male/
female' fittings.
Coaxial length: the max equivalent lenght for the models Infinity 14i and 17i is 6.5m (Ø60/100mm); for the model One
11i, the max length is 2.5m.
The use of each 90° bend (Ø60/100mm) is equivalent to 0.5m: subtract this value to the max equivalent lenght for
each 90° bend used.
The maximum number of 90° bends that can be used for Infinity 14i and 17i models is three; one for the One 11i model.
Any combination of bends and extensions that comply with the maximum equivalent length and the maximum number
of 90° bends is allowed. There is no minimum required distance for the flue system.
Split flue: by use of a special flue kit adaptor, it is possible to connect the appliance to a split flue system (the
appliance side of the kit is coaxial (Ø60/100mm); the flue side is Ø80-80mm). The pipes of the split unit must have a
minimum internal diameter of 80mm, be made of materials suitable for the appliance's flue gas temperatures and have
sealed 'male/female' fittings.
Split length: the max equivalent lenght is 5m and one 90° bend for the air inlet and 25m and a max of 3x90° bends
for the exhaust outlet.
Any combination of bends and extensions that comply with the maximum equivalent length and the maximum number
of 90° bends is allowed. There is no minimum required distance for the flue system.
Condensate: if the length of the exhaust system exceeds 1.5m, to prevent damages to the appliance, it is
recommended to install on top of the water heater a condensate-trap kit, then to connect the flue system. It is necessary
to incline the horizontal sections of the flue system to remove the condensate from the appliance, or to install a special
exhaust system for vertical sections.
The main components of the flue system are reported below:
FOT-HX060-A01
FOT-HX060-A03
FOT-HX060-A07
Coax prolongue
FOT-HX060-A08
L = 1000 mm
Coax bend 90° FOT-HX060-A13
Horizontal ue kit FOT-HX060-A15
Parallel ue kit
ø 80/80
with condensate trap
Condensate trap
Adaptor
ø 60/100 ø 80/125
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