General Information; Opening The Control Unit; Default Display - Viessmann VITOTRONIC 300 Operating Instructions Manual

General information

Each boiler is equipped with its own control unit. One
of the control units takes on the function of boiler and
heating circuit control unit and that of the higher
weather-compensated cascade control unit. This is
referred to below as the Cascade control unit. The
display shows "Lead boiler + cascade".

Opening the control unit

A
Fig. 5
Cascade control unit programming unit
You can change any settings on your heating system
centrally at the programming unit of the cascade con-
trol unit.
If remote control units are installed in your rooms, you
can also adjust the settings at the remote control units.
Remote control operating instructions
A screensaver appears after opening the control unit,
or if there has not been any operation for some time:
Lead boiler + cascade
1 2
Fig. 6

Default display

In the default display, the number of boilers installed in
the heating system is shown in a specific order (boiler
sequence). You can change the boiler sequence (see
page 36).
3 4 5
Operation
—
The other control units take on the function of a boiler
control unit for constant temperature operation. This is
referred to below as the Lag boiler control unit.
The programming unit is located behind cover flap
To open, pull the top edge of the hinged cover forward.
Each programming unit is equipped with a
touchscreen. To make adjustments and scan informa-
tion, tap the on-screen buttons.
Call up the default display as follows:
■ If the screen saver is active (see page 13):
Tap the display anywhere.
■ You are now in the main menu (see page 14).
Tap .
Multi boiler system control
.
A
13