Viessmann VITOLADENS333-F Service Instructions Manual page 54

Coding
Code 2
(cont.)
!
Please note
When selecting a value below 1 °C, there is a risk of pipes outside the
thermal envelope of the building being damaged by frost.
The standby mode, in particular, should be taken into consideration, e.g.
during holidays.
Parameter
Address A3: ...
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
to
15
Coding in the delivered condition
Boiler circuit, mixer circuit
A4:0 With frost protection
54
Heating circuit pump
"ON" at
-10 °C
-9 °C
-8 °C
-7 °C
-6 °C
-5 °C
-4 °C
-3 °C
-2 °C
-1 °C
0 °C
1 °C
to
14 °C
Possible change
A4:1
"OFF" at
-8 °C
-7 °C
-6 °C
-5 °C
-4 °C
-3 °C
-2 °C
-1 °C
0 °C
1 °C
2 °C
3 °C
16 °C
No frost protection, ad-
justment only possible if
coding address "A3: -9"
has been selected.
Note
Observe the note for
code "A3"