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installation
Water circuit diagram
1
3
4
7
8
9
10
11
12
A
B
Legend:
1.
Air relief valve
3.
Main Heat Exchanger
4.
Detection electrode
5.
Central Heating Return Temperature Probe
6.
Central Heating Flow Temperature Probe
7.
Gas Valve
8.
Secondary Exchanger
9.
Safety valve
10. Automatic By-pass
11. Drain valve
12. Condensate Trap
13. Filling valve
14. Central Heating Filter
15. D.H.W. Flow Switch
16. Diverter valve
17. Pressure Gauge
18. Switch On/Off
19. Circulation Pump with air release valve
20. Expansion vessel
21. Modulating Fun
22. Ignition Electrodes
23. Thermal fuse
24. Thermal fuse
34
24
23
22
21
20
19
18
17
16
15
14
13
C
D E
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 fl ue 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 eff ects of corrosion.
When implementing coaxial suction/exhaust systems the use of
authentic accessories is obligatory.
The fl ue gas exhaust ducting must not be in contact with or placed
near fl ammable materials, and must not cross building structures or
walls made using fl ammable material.
When replacing an old boiler, the ventilation and fl ue gas exhaust
system must always be replaced.
The fl ue 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 fl ow.
Types of boiler - fl ue 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 fl ue 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 diff erent installation solutions.
The boiler is set up for connection to a coaxial suction and fl ue gas
exhaust ducting system.
If there is any loss of pressure in the piping, please refer to the gas
fl ue 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 fl ue accessories catalogue.
WARNING
Make sure that the fl ue gas exhaust and ventilation
ducting are not obstructed.
Make sure that there are no leaks along the fl ue gas
exhaust ducting.
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