76
"Temperature limits, frost protection function"
Setting
Explanations
2 see service instructions
A3:2
Outside temperature below 1 °C: Heating circuit pump
"ON"
Outside temperature above 3 °C: Heating circuit pump
"OFF"
... see service instructions
A3:-9 to
A3:15
Heating circuit pump ON/OFF, see following table:
!
Please note
With settings below 1 °C, pipes outside the ther-
mal envelope of the building could freeze up.
Use settings below 1 °C only if pipes are appro-
priately thermally insulated.
Parameter
Heating circuit pump
A3: ...
"ON"
"OFF"
-9
-10 °C
-8 °C
-8
-9 °C
-7 °C
-7
-8 °C
-6 °C
-6
-7 °C
-5 °C
-5
-6 °C
-4 °C
-4
-5 °C
-3 °C
-3
-4 °C
-2 °C
-2
-3 °C
-1 °C
-1
-2 °C
0 °C
0
-1 °C
1 °C
1
0 °C
2 °C
2
to
1 °C
to
3 °C
to
15
14 °C
16 °C
"Frost protection"
Setting
Explanations
With
A4:0
Frost protection active
Without
A4:1
No frost protection. Adjustment only possible if param-
eter "A3:-9" has been set.
Note
Observe "Please note" for parameter "A3"
"Heating limit: Economy function outside temperature"
Setting
Explanations
5 see service instructions
A5:5
Economy function outside temperature: Heating circuit
pump "OFF" when the outside temperature (OT) is
1 K higher than the set room temperature (RT
set
)
OT
>
RT
set
+ 1 K
Without
A5:0
No economy function outside temperature
... see service instructions
A5:1 to
A5:15
With economy function outside temperature: Heating
circuit pump "OFF"; see the following table:
Parameter level 2
Heating circuit 1, heating circuit 2, heating…
(cont.)
5778741
Parameter
