Viessmann Vitotronic 200 KW2 Installation And Service Instructions Manual page 92

Coding
Code 2
(cont.)
Coding in the delivered condition
Boiler circuit/mixer circuit (cont.)
A3 : 2 Outside temperature below
1 ºC:
Heating circuit pump ON
Outside temperature above
3 ºC:
Heating circuit pump OFF
!
A4 : 0 With frost protection
92
Please note
When selecting a
value below 1 ºC
there is a risk of
pipes outside the
thermal insulation of
the house freezing
up.
Pay particular
attention to this in
standby mode, e.g.
during holidays.
Possible change
Heating circuit pump
ON at
10 ºC
A3 : 9
19 ºC
A3 : 8
18 ºC
A3 : 7
17 ºC
A3 : 6
16 ºC
A3 : 5
15 ºC
A3 : 4
14 ºC
A3 : 3
13 ºC
A3 : 2
12 ºC
A3 : 1
11 ºC
A3 : 0
10 ºC
A3 : 1
11 ºC
A3 : 2
to to−1 to
−14 ºC
A3 : 15
A4 : 1 No frost protection,
Adjustment only possible if
code A3: 9 has been
selected.
!
Please note
Observe the note for
coding address A3.
OFF at
8 ºC
7 ºC
6 ºC
5 ºC
4 ºC
3 ºC
2 ºC
1 ºC
0 ºC
1 ºC
2 ºC
3 ºC
16 ºC