Viessmann Vitoligno 300-P Service Instructions For Contractors page 105

Control functions
Extended economy mode
The heating circuit pump is switched
OFF and the set flow temperature is set
to 0 °C, if one of the following criteria is
met:
■ The outside temperature exceeds the
value selected via coding address
"A6".
■ The set room temperature is reduced
via coding address "A9".
■ The mixer has been closed for 12 min.
(mixer economy function, coding
address "A7").
■ The actual room temperature exceeds
the value selected via coding address
"B5".
(cont.)
System dynamics mixer circuit
In conjunction with the heating circuits 1
and 2:
You can influence the control character-
istics of the mixer via coding address
"C4".
Frost protection
In the case of outside temperatures
below +1 ºC a minimum flow tempera-
ture of 10 ºC is ensured. For changes
see coding address "A3", variable frost
limit.
Function description
105