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MAINTENANCE
MAINTENANCE
Fig. 10.20
Flue
sweep function at maximum output
in heating mode
•
Press key 18 to vary the output in chimney
sweep mode: when the LCD display dis
-
plays the letters
cP
that alternate with the
heating water temperature value (e.g.
60
),
the "
flue sweep function" is at maximum
(eventually range rated) output in heating
mode (Fig. 10.21).
Fig. 10.21
Flue
sweep function at maximum output
in domestic hot water mode
•
Press further key 18 to vary again the out
-
put in flue sweep mode: when the LCD
display displays the letters
dP
that alter-
nate with the heating water temperature
value (e.g.
99
), the "flue sweep function" is
at maximum output in domestic hot water
mode (Fig. 10.22).
Fig. 10.22
•
Press sequentially keys, 16 - 17 and then
18 (Fig. 10.17) and hold in for 10 seconds
to exit the "flue sweep mode" and return
to the previously set boiler status (Fig.
10.23).
Fig. 10.23
°C
°C
Winter
Summer
Note to service engineers
It is required that the burner seal lip seal
and mixing chamber seal along with the
flame detection electrode are inspected
every year and replaced if required.
Failure to inspect the flame detection
probe, seals and replace as required
may render the guarantee void.
Summary of Contents for ADVANCE 25C
Page 87: ......
