Heating engineer
Installation, use and maintenance manual – Caldaria Con export
25
3
3.3.4
Condensate drain siphon filling
When switching on for the first time, the condensate siphon
must be filled to prevent the combustion gases from backflow-
ing through the siphon.
It is advisable, after the first few months of operation of the ap-
pliance, to clean the siphon, which collects also any deposits re-
sulting from the first passage of the condensate inside the com-
ponents of the boiler. These deposits could cause the siphon
itself to malfunction.
3.3.5
Condensate drain and neutralisation
The provided condensate drain hose (EN 677) must be connect-
ed to a suitable collection and disposal system in accordance
with the applicable regulations in force.
It will be the responsibility of the designer and/or the install-
er and/or the person in charge of the system, depending on
the power of the system and intended use of the building, to
assess the adoption of systems for the neutralization of acid
condensate.
The system must be designed in such a way as to prevent con-
densation from freezing. Before commissioning the appliance,
check that the condensate is drained correctly.
To do this, disconnect the hose from the siphon outlet and pour
water into it, making sure that it is correctly and completely
drained from the downstream drainage system.
The connection of the discharge to the sewerage system
should be made at atmospheric pressure, i.e. by dripping
into a siphoned container connected to the sewerage
system.
3.4
COMBUSTION PRODUCTS EXHAUST
Installation types
For this type of boiler the flue gas exhaust configuration
B23P, B33 can be used.
3.4.1
Flue gas exhaust connection
▶
Caldaria 35: Ø 80 mm
▶
Caldaria 55.1: Ø 80 mm
▶
Caldaria 100.2: Ø 100 mm
on the upper side of the boiler (Paragraph 1.2
p. 7).
The Caldaria 100.2 model is already equipped with chamfer and
seal for Ø 100 mm male pipe.
The rain cover, supplied, must be mounted on the flue gas ex-
haust pipe to protect the internal components of the boiler (de-
tail E, Figure 3.10
p. 25).
The combustion air is drawn from the outside of the casing by
means of special louvres located in the lower part of the casing.
Flanged socket (Caldaria 35 and 55.1)
The Caldaria 35 and Caldaria 55.1 are supplied with a flanged
socket (60/80 mm), complete with a socket for flue gas analy-
sis, which must be connected to the combustion chamber after
positioning the gasket, supplied. When the boiler arrives at the
building site, the flanged socket is resting on the flue outlet of
the combustion chamber, but it is not fixed, and cannot there-
fore be used if it is not correctly positioned and fixed.
Mounting the flanged socket (Ø 60/80 mm)
1. Remove flange A from the upper casing by unscrewing
the two side screws 1.
2. Remove the flanged socket B resting on the flue gas
outlet of the combustion chamber.
3. Check that the gasket G is correctly positioned on the
combustion chamber (Figure 3.11
p. 26).
4. Position the silicone gasket of the flanged socket C at the
appropriate holes for the fixing screws.
5. Poistion the flanged socket B over the gasket C and se-
cure the assembly with the appropriate fixing screws D.
6. Replace the flange A on the upper casing and fix it with
the side screws 1.
7. Place the rain cover E on the flue gas exhaust pipe F (not
supplied).
8. Insert the flue gas exhaust pipe F (not supplied) into the
flanged socket B, so that the rain cover E remains outside
the boiler casing, protecting flange A.
It is important to check the correct positioning of the
gasket G positioned on the combustion chamber (Figure
3.11
Incorrect positioning of the gasket G can compromise
the correct discharge of the flue gas outside and conse-
quently damage the appliance.
Figure 3.10
Mounting the flanged socket (Ø 60/80 mm)
1
Flange fastening screws
A
Flange
B
Flanged socket Ø 60/80 mm
C
Gasket of the flanged socket
D
Fixing screws of the flanged
socket
E
Rain cover
F
Flue gas exhaust pipe
A
B
D
E
F
C
1
Summary of Contents for Caldaria 100.2 Condensing+ export
Page 55: ......
