Viessmann Vitopend 200-W Installation And Service Instructions For Contractors page 63

Code 2
(cont.)
Parameter
-4
-3
-2
-1
0
1
2
to
15
Coding in the delivered condition
Boiler circuit, mixer circuit
A4:0 With frost protection
(only for weather-com-
pensated control units)
A5:5 With heating circuit
pump logic function
(economy circuit): Heat-
ing circuit pump "OFF"
when the outside tem-
perature (AT) is 1 K
higher than the set
room temperature
(RT )
set
AT > RT
for weather-compen-
sated control units)
Parameter address
A5:...
1
2
3
Heating circuit pump
-5 °C
-4 °C
-3 °C
-2 °C
-1 °C
0 °C
1 °C
to
14 °C
Possible change
A4:1
A5:0
A5:1
to
A5:15
+ 1 K (only
set
With heating circuit pump logic function: Heating
circuit pump "OFF"
AT > RT + 5 K
set
AT > RT + 4 K
set
AT > RT + 3 K
set
Coding
-3 °C
-2 °C
-1 °C
0 °C
1 °C
2 °C
3 °C
16 °C
No frost protection; this
setting is only possible if
code "A3:-9" has been
selected.
Note
Observe the information
regarding coding address
"A3"
Without heating circuit
pump logic function
With heating circuit pump
logic function: Heating
circuit pump "OFF" (see
the following table)
63