8
If the air inlet is direct from outside
in the room of installation, its run
should not have changes of direction
and small mesh grill, as can be easily
clogged.
For proper functioning, the appliance
should be installed in a location where it
will be able to take in the air necessary
for combustion. Provide an air intake hole
100 cm² close to the boiler/thermostove.
Unless the installation involves a sealed
chamber product, there is no obligation to
withdraw the combustion air from outside
the house through a duct connected di-
rectly to the heat generator. If this type of
installation is deemed necessary, the out-
side air intake must be carried out through
the wall immediately behind the generator.
If it’s not possible to withdraw the air from
outside, the air intake can be made from an
adjacent room. In both cases use straight
ducts made of suitable material with the
diameter no less than the air inlet of the
generator. Protect the duct with a grill gra-
te from inside and outside.
Large mesh grill
Free Hole
fig. 8 - Air Intake
3.7 Plumbing Connections
Before installing the boiler/thermo-
stove, fully flush the heating system
to clear any debris which may have
become lodged in the pipework and
can compromise the boiler effective
operation.
The connection of the boiler/ther-
mostove to the plumbing system
must be carried out only by specia-
lized personnel who are capable of
carrying out installation properly, in
compliance with current standards in
the country of installation. The He-
ating System Compliance Certificate
must be issued under the responsi-
bility of the installer.
Please follow up local regulations
and directives (es: regional building
regulations, requirements for hea-
ting devices, technical regulations
for water and air heating systems).
• Install gate valves upstream and down-
stream of the appliance to be able to di-
sconnect it from the plumbing system.
• It is recommended that a water drain cock
is used on the return pipework.
• Connect the boiler to the heating system
with flexible wedges to give some space
for maintenance work.
• The installation of anti-condensation sy-
stems with a fixed point at 55 ° C is requi-
red in case if system volume greater than
150 liters.
• The installer must determine the necessi-
ty of an additional expansion volume con-
sidering that the boiler/stove is equipped
with a 6/8 L expansion vessel.
• An additional circulation pump can be re-
quired if the prevalence is more than the
built-in pump can lift.
The security 3 Bar valve should
be piped outside to prevent injury to
the user if it is activated.
Thermal safety drain, if present,
should be piped outside downward.
In case of overheating, it must ope-
rate in complete safety for people,
animals or property. The hot water
and steam must not remain inside of
the room.
Ensure that there is an adequate provision
in the system for heat dissipation from the
boiler, especially in closed-circuit zone he-
ating systems. The charge pressure, with
the system cold, must be between 800 and
1200 mBar. In case of leak, close the water
supply and contact the installer. If in your
heating system a glycol is used, it must be
propylene glycol or ethylene glycol-based
fluid.
The following are indicative, non bin-
ding schemes.
