Heating System With Two Heating Circuits - Viessmann VITODENS Operating Instructions Manual

Where to find the controls
Summary of controls and indicators
|
Mixer "OPEN"
~
Mixer "CLOSE"
w
DHW heating enabled
Êp DHW heating via solar heating
system
A
Burner "On"
Q
Radio clock reception (only with
radio clock module, accessory)

Heating system with two heating circuits

When two heating circuits have been connected to your heating system, select
that heating circuit to which the setting should apply before making adjustments
at the control unit.
Note
"Select htg.circuit" will be displayed should you begin making adjustments
prior to selecting the relevant heating circuit.
Press the following keys:
1. a "1r" flashes on the display.
2. d for selecting heating circuit A1
(heating circuit without mixer)
or
3. a for heating circuit M2 (heating
circuit with mixer)
"2r" flashes on the display.
10
(cont.)
u
For time setting and time scan
S
Emissions test function
E
Burner fault (appears instead of
the day of the week)
In case of two heating circuits:
Selected heating circuit
4. d for selecting heating circuit M2
(heating circuit with mixer).
Note
After approx. 4 s or if you press d
again, the following will be dis-
played:
The figure in front of the day indi-
cates which heating circuit has
been selected.