8.3 Locking of a fixed temperature
If you desire to set a temperature on the knob please insert
the locks in the spaces to the right and to the left of the black
point after setting the required temperature (see 8.1 and 8.2)
Once the operation is completed the head knob does not ro-
tate anymore.
9
Anti-freeze position
NB
In zero position "0" (closed) there is danger of freezing. With the
thermal expansion valve you have the possibility of protecting
the housing from freezing and damage, even in your absence.
Naturally, the heating system is supposed to be in function.
• Set the knob so that the freezing symbol (
) corresponds
to the reference pointer.
In this case, the desired temperature set up on the thermal ex-
pansion valve corresponds to a temperature of 7 °C.
10 Aeration of the rooms
When you air the rooms, turn the knob to be anti-freeze position
( ). In this way you avoid dispersing the heat.
You will also avoid overheating the rooms after having re-
closed the window.
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