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In any case, it should be inspected at least
once a year by a qualified technician.
During maintenance operations, it is
important to verify that the drip-plate
with drain trap contains water (this check
is particularly important if the generator
has not been used for extended periods of
time). If necessary, the drip plate can be
filled using the tap provided (fig. 20).
5
4.5.1
Chimney sweep function (fig. 21)
To check boiler combustion, press the
3
installer's key
for a few seconds. The
chimney sweep function will switch on and
1
will continue for 15 minutes.
From that moment, the boiler will start
working in heating mode at maximum
power, with cut off at 80°C and re-ignition
2
at 70°C (ATTENTION! Temperature may
reach excessive values when using unpro-
4
tected low temperature plants. Before
activating the chimney sweep function
make sure that the radiator valves or
eventual zone valves are open).
The test can also be carried out with the
boiler working in D.H.W. mode.
For this, after activating the chimney sweep
function, open one or more hot water fau-
cets. Under these conditions, the boiler
5
will function at maximum power with the
5
D.H.W. circuit kept at between 60°C and
50°C. During the test, the hot water faucets
must remain open.
3
3
If the key
and
are pressed during
the 15 minutes of the chimney sweep fun-
1
1
ction, the boiler will be brought respecti-
vely to maximum and minimum power.
5
The chimney sweep function will automa-
2
2
tically switch off after 15 minutes or when
3
is pressed again.
the key
4
4
1
4.5.2
Operation floor drying
(fig. 22)
2
The operation floor drying keeps the floor
at a pre-established temperature profile
and it is activated only for those systems
4
combined with the mixed zone card
ZONA MIX code 8092275/76.
Fig. 20
The temperature profiles can be selected
by means of the installer parameter PAR
43:
0 = Not activated function
1 = Curve setting A
2 = Curve setting B
3 = Curve setting A + B
The turning off of the function happens
clicking on the button OFF (return of PAR
43 to the value 0) or automatically at the
end of the function.
The set of the mixed zone follows the deve-
lopment of the selected curve and reaches
a maximum of 55°C.
During the function all the other heating
[TVw]
55
50
45
40
35
30
25
20
0
1
X
1
TVw
Flow temperature setpoint
Tag
Period in days
x
Start day
A
Functional heating
B
Floor curing heating
demands are ignored (heating, sanitary,
antifreeze and chimney sweep).
During the functioning the display shows
the remaining days for the completion of
the function (example mains digits -15 = 15
days lack to the end of the function).
The diagram fig. 22 reports the deve-
lopment of the curve.
ATTENTION:
- Observe the relevant standards and
regulations of the floor manufacturer!
- Proper functioning is ensured only
when the plant is correctly installed
(hydraulic system, electrical installa-
tion, settings)! If not observed, the floor
might get damaged!
5
7
1
5
10
A
B
A + B
EN
2
Fig. 21
15
18
[Tag
]
25
Fig. 22
63
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