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). Standard visualisation will return to
the display by pressing the key (
or after 10 seconds if no key is pressed.
Regulation of the external
sensor (fig. 26/a)
If an external sensor is installed, the value
of the output temperature is automatically
chosen by the system, which quickly adjusts
the of flow temperature on the basis of the
external temperature.
If you wish to change the value of the tem-
perature, increasing or decreasing that cal-
culated automatically by the electronic
card, proceed as indicated in the preceding
paragraph.
The level of various correction of a value of
temperature proportional calculated. The
display will be as shown in fig. 26/a.
REGULATION OF THE D.H.W.
TEMPERATURE (fig. 27)
The D.H.W. temperature is set by default to
the optimum of 50 ° and the knob of the
mixing valve is set in pos. 4. To increase the
temperature of the following steps:
- Pressing the key
. The display will
appear as shown.
- Increase the value with the key (
until the display shows a temperature of
60 °.
- The display will return to the standard
visualisation by pressing the key
again, or after 10 seconds if no key is
pressed.
- Manually set the knob on the mixing
valve in pos. 5.
TO SWITCH OFF THE BOILER (fig. 28)
In the case of a short absence, press more
than two second the key (
trols. The display will be as shown in figure
(boiler in stand-by). In this way, leaving the
electricity and the fuel supply connected,
the boiler is protected from frost and from
the pump becoming blocked.
If the boiler is not used for a prolonged
period, it is advisable to disconnect the
electricity supply, by switching off the main
switch of the system, and to close the gas
tap and, if low temperatures are expected,
to completely empty the hydraulic circuits
to avoid pipes being broken by the forma-
tion of ice in the pipes.
84
) again,
)
) of the con-
Fig. 26
Fig. 26/a
°C
Pos.
3
25
4
30
5
60
MAX °C
65
pos. 4
Fig. 27
Fig. 28
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