Bpt TH 350 - 12 - Frost Protection Function; Frost Protection Procedure

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12  FROST PROTECTION FUNCTION
Even if proportional-integral operating mode has been
selected, in Frost Protection mode the temperature set
for heating mode will be maintained but with differential
control only.
12.1- Remove the main unit of the unit.
12.2- Press the button twice and check that the
symbol is displayed (fig. 54).
12.3- Press the button.
The presence of symbols and on the display confirms
frost protection mode.
The display shows the default frost protection temperature
(3°C) which will remain displayed for 5 seconds (fig. 55).
12.4- Press the or button to select any temperature
between 3°C and 16°C (fig. 56).
If a temperature below 3°C is set then the system will
return to SYSTEM BYPASS mode.
The symbol confirms the return to system bypass mode
(fig. 57).
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