Viessmann Vitoligno 300-P Service Instructions For Contractors page 65

Code 2
(cont.)
Parameter Heating circuit pump
address A3:...
"ON"
−9 −10 °C
−8 −9 °C
−7 −8 °C
−6 −7 °C
−5 −6 °C
−4 −5 °C
−3 −4 °C
−2 −3 °C
−1 −2 °C
−1 °C
0
1 0 °C
2 1 °C
to to
15 14 °C
Coding in the delivered condition
A4:0 With frost protection
A5:5 With heating circuit pump
logic function (economy
mode):
Heating circuit pump
"Off" when the outside
temperature (AT) is 1 K
higher than the set room
temperature (RT
AT > RT
A6:36 Extended economy mode
disabled
Possible change
A4:1
A5:0
A5:1
to
A5:15
)
set
+ 1 K
set
A6:5
to
A6:35
"OFF"
−8 °C
−7 °C
−6 °C
−5 °C
−4 °C
−3 °C
−2 °C
−1 °C
0 °C
1 °C
2 °C
3 °C
to
16 °C
No frost protection; this set-
ting is only possible if code
"A3: −9" has been selec-
ted.
Note
Observe the information
regarding coding address
"A3".
Without heating circuit
pump logic function
With heating circuit pump
logic function:
Heating circuit pump "Off";
(see table on page 47)
Extended economy mode
enabled (see page 47)
Codes
65