85
!
Please note
If a value below 1 °C is selected, there is a risk that pipes outside the thermal
envelope of the building could freeze up.
The standby mode, in particular, should be taken into consideration, e.g. dur-
ing holidays.
Parameter
Heating circuit pump
Address 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
Coding in the delivered condition
Possible change
A4:0
With frost protection
A4:1
No frost protection; this set-
ting is only possible if code
"A3:-9" has been selected.
Note
"Please note" for code
"A3"
A5:5
With heating circuit pump
logic function (economy
circuit): Heating circuit
pump "Off" when the out-
side temperature (AT) is
1 K higher than the set
room temperature (RT
set
)
AT > RT
set
+ 1 K
A5:0
Without heating circuit
pump logic function
A5:1
to
A5:15
With heating circuit pump
logic function: Heating cir-
cuit pump "Off"; see the fol-
lowing table
Code 2
Heating circuit 1, heating circuit 2, heating…
(cont.)
5692 860 GB
Summary of Contents for CU3A
Page 147: ...147 5692 860 GB ...