Ariston HS C 24 FF NG Installation And Servicing page 53

Connecting the Flue
The boiler is designed to operate in B mode (by drawing air from
the room) and in C mode (by drawing air from outside).
When installing an exhaust system be careful when handling the
seals, in order to avoid flue gas leaking into the air circuit.
Horizontally-installed piping must have a downward incline of
3% so as to avoid the build-up of condensate.
Nel caso di installazione di tipo B il locale in cui
When type B installation is used, the room in which the coiler
is installed must be ventilated using a suitable air inlet which
complies with current legislation.
In rooms where corrosive vapours may be present (for example,
laundry rooms, hair studios, rooms where galvanic processes
take place, etc.) it is important that type C installation is used,
with air for combustion drawn from outside. In this way the boiler
is protected from the effects of corrosion.
When implementing coaxial suction/exhaust systems the use of
authentic accessories is obligatory.
The flue gas exhaust ducting must not be in contact with or
placed near flammable materials, and must not cross building
structures or walls made using flammable material.
When replacing an old boiler, the ventilation and flue gas exhaust
system must always be replaced.
The flue gas exhaust ducting joint should be created using a
male/female coupling and a seal.
Couplings should always be arranged so that they go against
the direction of the condensate flow.
WARNING
MAKE SURE THAT THE FLUE GAS
EXHAUST AND VENTILATION
DUCTING ARE NOT OBSTRUCTED.
MAKE SURE THAT THERE ARE NO
LEAKS ALONG THE FLUE GAS EXHAUST
DUCTING.
Types of boiler - flue exhaust connection
- coaxial connection of the boiler to the suction/exhaust ducting
- split connection of the boiler to the exhaust ducting with air
suction from outside
- split connection of the boiler to the exhaust ducting with air
suction from the room.
Products which are resistant to condensate must be used in the
connection between the boiler and the flue gas exhaust.
For details relating to connection lengths and direction changes,
please consult the "exhaust types" table.
The suction/exhaust ducting connection kits are supplied
separately from the appliance, according to different installation
solutions. The boiler is set up for connection to a coaxial suction
and flue gas exhaust ducting system.
If there is any loss of pressure in the piping, please refer to the
gas flue accessories catalogue.
Supplementary resistance must be borne in mind during the
sizing process mentioned above.
For the calculation method, equivalent length values and
installation examplesplease refer to the gas flue accessories
catalogue.
The boiler is set up for connection to a 60/100 coaxial air intake
and flue gas exhaust ducting system.
For Twin-pipe system it's necessary to utilize the appropriate
adapter.
TO PERFORM THE ANALYSIS OF
COMBUSTION MUST BE INSTALLED
ACCESSORIES WITH FLUE TEST
POINT (SEE FIG. BELOW).
FOR MORE INFORMATION ON FLUE
ACCESSORIES REFER TO THE
CATALOGUE FUMES ARISTON.
COAXIAL SYSTEM
INSTALLATION
TWIN-PIPE SYSTEM
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