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10.12 Water inhibitor concentration
Where chemical products are used the level
of water treatment should be checked on an
annual basis and re treated after full or par-
tial drain down.
A conductivity meter can be used to check
the correct concentration of inhibitor in the
heating water.
10.13 Setting the boiler flue sweep
function
With the boiler set in flue sweep mode, it is
possible to exclude some boiler automatic
functions making check and control opera-
tions easier.
• Enter in "programming mode" by sequen-
tially pressing and holding in keys, 12 - 13
and then 14 (Fig. 10.16) for 10 seconds
until the letters Pr that alternate with code
01 are displayed on the LCD display, in-
dicating that "parameter 01" (Fig. 10.17)
has been activated.
12
Fig. 10.16
- 74 -
MAINTENANCE
Fig. 10.17
Flue sweep function at minimum output
in domestic hot water mode
• Press keys 13 and 14 (Fig. 10.16) at the
same time until the LCD display displays
the letters LP that alternate with the heat-
ing water temperature value (e.g.45), in-
dicating the activation of the "flue sweep
function" at minimum output (Fig. 10.18).
14
13
Fig. 10.18
Flue sweep function at minimum output
in heating mode
• By pressing 14 (Fig. 10.16) it is possible
to change power in flue sweep mode: with
the letters hP on the LCD display which
alternate between the heated water tem-
perature (i.e.32), we are in the "flue sweep
function" at the minimum power during
heating (Fig. 10.19).
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