B Auxiliary Function; C Set Temp. 2 - Viessmann VITOCAL WPR 300 Service Instructions Manual

600B Auxiliary function

Auxiliary DHW heat-up function to kill bacteria.
At the first cylinder heating every
Monday, the total cylinder content is
heated to the "Set temp. 2" (600C).
In order that bacteria are also killed in
the DHW circulation line, the DHW cir-
culation pump (if installed) runs in
addition to the cylinder heating.
"Yes" Auxiliary function is on.
"No" Auxiliary function is off.

600C Set temp. 2

Set temperature for "Auxiliary function" DHW and operating mode "Tempera-
ture 2".
If a second temperature sensor is
installed and enabled, this parameter
also specifies the set value for DHW
heating only once.
Note
The maximum adjustable value for
"Set temp. 2" is the upper tempera-
ture limit for the DHW cylinder "Max.
temp." (6006).
DHW control settings
Note
To prevent the cylinder content mixing
with the DHW circuit during DHW
cylinder heat-up, the control unit does
not start the DHW circulation pump
until the cylinder temperature has
reached the "Set temp. 2" up to 50%
of its hysteresis ("Hysteresis",
6007).
Menu
& "Device settings"
& "Programming"
& "DHW"
& "Auxiliary function"
Delivered condition
Setting
Menu
& "Device settings"
& "Programming"
& "DHW"
& "Set temp. 2"
Delivered condition
Setting
No
Yes/No
60 °C
10 to 70 °C
121