Heating Circuit - Viessmann Vitoladens 300-C Installation And Service Instructions Manual

Codes
Code 2
(cont.)
Coding in the delivered condition
27:15 Cyclical heating time 15 min.
Once the DHW cylinder with priori-
ty is heated up, the DHW cylinder
without priority is heated for a max-
imum duration equal to the set cy-
clical 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 detected during the
cyclical pause time.

"Heating circuit..."

Select "Heating circuit ..." (see page 63).
Coding
Coding in the delivered condition
A0:0 Without remote control
A1:0 All possible settings at the remote
control can be accessed
A2:2 Cylinder priority 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
72
Possible change
26:3
26:4
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
Priority for DHW cylinder 2 with cy-
clical heating.
Cyclical heating without priority for
either DHW cylinder.
The cyclical heating time is adjusta-
ble from 5 to 60 min.
The cyclical pause time is adjustable
from 1 to 60 min.
With Vitotrol 200-A/200-RF (auto-
matic recognition)
With Vitotrol 300-A (automatic rec-
ognition)
Only party mode can be set at the
remote control (only for
Vitotrol 200-A and Vitotrol 200-RF)
No cylinder priority for heating circuit
pump
Cylinder priority for mixer. The mixer
is closed during cylinder 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