Heating Circuit 1, Heating Circuit 2, Heating Circuit 3/Group "5 - Viessmann VITOCROSSAL Service Instructions Manual

Code 2
Solar/Group "4"
(cont.)
Coding in the delivered condition
27:15 Cyclical heating time 15 min.
If the DHW cylinder with priority
has been heated up, the DHW cyl-
inder without priority is heated for a
maximum duration equal to the set
cyclical heating time.
28:3 Cyclical pause time 3 min.
After the set cyclical heating time
for the DHW cylinder without priori-
ty has expired, the rise in collector
temperature is captured during the
cyclical pause time.

Heating circuit 1, heating circuit 2, heating circuit 3/Group "5"

Coding
Coding in the delivered condition
A0:0 Without remote control (only for
weather-compensated control
units)
A1:0 All settings that can be made at
the remote control can be execu-
ted (only for weather-compensated
control units).
A2:2 Cylinder priority control for heating
circuit pump
A3:2 Outside temperature below 1 °C:
Heating circuit pump "ON"
Outside temperature above 3 °C:
Heating circuit pump "OFF"
!
Please note
With settings below 1 °C there is a risk that pipes outside the thermal envelope of the building could freeze
up.
Standby mode in particular must be taken into consideration, e.g. during holidays.
Parameter
address A3:...
-9
-8
-7
-6
-5
56
Possible change
27:5
to
27:60
28:1
to
28:60
Possible change
A0:1
A0:2
A1:1
A2:0
A2:1
A2:3
to
A2:15
A3:-9
to
A3:15
Heating circuit pump
"ON"
-10 °C
-9 °C
-8 °C
-7 °C
-6 °C
Cyclical heating time is adjustable
from 5 to 60 min.
Cyclical pause time adjustable from
1 to 60 min.
With Vitotrol 200-A/200-RF (auto-
matic recognition).
With Vitotrol 300 (automatic recogni-
tion).
Only party mode can be set at the
remote control.
(Only on Vitotrol 200-A.)
Without cylinder priority for heating
circuit pump
Cylinder priority applies only to mix-
ers. The mixer is closed during cylin-
der heating. The heating circuit
pump is running.
Modulating priority for mixers. The
heating circuit receives a reduced
amount of heat.
Heating circuit pump "ON/OFF" (see
the following table)
"OFF"
-8 °C
-7 °C
-6 °C
-5 °C
-4 °C