REGULATION OF THE WATER
TEMPERATURE FOR HEATING (fig. 26)
To set the temperature of the water for
heating, press the key
of the controls .
The display will be as shown in the figure.
Change the values with the key (
and
). Standard visualisation will return to
the display by pressing the key
again, or
after 60 seconds if no key is pressed.
If the water return temperature is less than
about 55°C, the combustion products con-
dense, further increasing the efficiency of
thermal exchange.
Regulation of the external sensor
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)
To set the desired temperature D.H.W.,
press the key
of the controls.
The display will be as shown in the figure.
Change the values with the key (
and
).
The display will return to the standard
visualisation by pressing the key
again,
or after 10 seconds if no key is pressed.
TO SWITCH OFF THE BOILER (fig. 28)
In the case of a short absence, press more
than two second the key
of the controls.
The display will be as shown in figure (boiler
in stand-by). In this way, leaving the electri-
city and the fuel supply connected, the boi-
ler 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.
87
IT
ES
PT
GB
Fig. 26
Fig. 26/a
Fig. 28
Fig. 27
Summary of Contents for FORMAT DGT HE 12
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