Viessmann Vitodens 222-F Installation And Service Instructions For Contractors page 77

Heating circuit 1, heating circuit 2, heating...
Parameter Heating circuit pump
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
0 -1 °C
1 0 °C
2 1 °C
to to
15 14 °C
"Frost protection"
Setting
With
Without
"Heating limit: Economy function outside temperature"
Setting
5 see service instructions
Without
... see service instructions
Parameter With economy function outside tem-
A5:... perature: Heating circuit pump
"OFF"
1 OT RT
>
set
2 OT RT
>
set
3 OT RT
>
set
4 OT RT
>
set
5 OT RT
>
set
6 OT RT
>
set
7 OT RT
>
set
to
15 OT RT
>
set
"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
A4:0
A4:1
A5:5
A5:0
A5:1 to
A5:15
+ 5 K
+ 4 K
+ 3 K
+ 2 K
+ 1 K
- 1 K
- 9 K
(cont.)
Explanations
Frost protection active
No frost protection. Adjustment only possible if param-
eter "A3:-9" has been set.
Note
Observe "Please note" for parameter "A3"
Explanations
Economy function outside temperature: Heating circuit
pump "OFF" when the outside temperature (OT) is
1 K higher than the set room temperature (RT
OT RT + 1 K
>
set
No economy function outside temperature
With economy function outside temperature: Heating
circuit pump "OFF"; see the following table:
Parameter level 2
)
set
77