Viessmann Vitoligno 250-S Installation And Service Instructions For Contractors page 42

Code 1
Additional heat generator group
Coding
Coding in the delivered condition
Buffer charging until, sensor
D0:1 The additional heat generator
charges the heating water buffer
cylinder up to the 1st buffer tem-
perature sensor.
Buffer charging until, temperature
D1:75 The additional heat source charg-
es the heating water buffer cylinder
until a temperature of 75 °C is
reached at the selected sensor
"D0:1-5".
Start delay
D2:10 Start delay of 10 min for the addi-
tional heat generator
Start temperature, set system temperature
D3:-10 Start temperature of the additional
heat generator. Condition for start-
ing: Actual system temperature <
set system temperature - value set
(here: 10 K)
Minimum runtime
D4:5 Minimum runtime of the additional
heat generator of 5 min
Minimum pause
D5:5 Minimum pause duration of the ad-
ditional heat generator of 5 min
Immediate start, set system temp
D6:-20 Additional heat generator is started
without delay. Condition: Actual
system temperature < set system
temperature - value set (here:
20 K)
42
(cont.)
Possible change
D0:0
D0:2
D0:3
D0:4
D0:5
D1:50
to
D1:100
D2:0
to
D2:250
D3:-100
to
D3:-1
D4:0
to
D4:250
D5:0
to
D5:250
D6:-100
to
D6:0
The additional heat generator does
not charge the heating water buffer
cylinder.
The additional heat generator charg-
es the heating water buffer cylinder
up to the 2nd buffer temperature
sensor.
The additional heat generator charg-
es the heating water buffer cylinder
up to the 3rd buffer temperature
sensor.
The additional heat generator charg-
es the heating water buffer cylinder
up to the 4th buffer temperature
sensor.
The additional heat generator charg-
es the heating water buffer cylinder
up to the 5th buffer temperature
sensor.
Adjustable value in °C
Adjustable value in min
Adjustable value in K
Adjustable value in min
Adjustable value in min
Adjustable value in K