Selecting A Language - Viessmann VITOCAL 300 Installation And Service Instructions Manual

Controlling the relays and mixers manually
"Switch relay" sub-menu
Note
Here, the relays can be activated at
random.
Some actuators may still be switched
ON when this menu is called up.
!
Please note
Unintentional conflicting oper-
ating situations can be created
using "manual control" (e.g. "E
heating 2: On" and "Sec-
ondary pump: Off"). This can
lead to equipment damage.
For this reason, first set all
actuators to "Off" during every
operating procedure, then set
the required actuators to "On".

Selecting a language

Menu item
& "System settings"
& "Program"
& "System definition"
Select "Language" and open the
selection menu with ?.
Control unit settings
(cont.)
Menu item
& "System settings"
& "Tech. service level"
& "Manual control"
& "Switch relay"
– The "RESET" key switches all
relays OFF, that are currently
switched ON.
– Select a relay by pressing x
and y, then switch the relay
with the keys "ON" and "OFF".
& "OK"
& Select the required language with
x/y and save with "OK"
& "OK"
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