Starting The Heating System - Viessmann VITODENS Operating Instructions Manual

Starting the heating system

A B C
2
1 3
0 4
bar
E
A Fault indicator (red)
B ON indicator (green)
C Reset button
1. Check the heating system pressure
at the pressure gauge. The system
pressure is too low if the indicator
points to the area below 1.0 bar. In
this case, top up with water or notify
your local heating contractor.
2. For open flue operation:
Check that the ventilation apertures
of the installation room are open and
unrestricted.
Note
With open flue operation, the com-
bustion air is drawn from the installa-
tion room.
HC1
21°C
14°C
Boiler temperature 48°C
D ON/OFF switch
E Pressure gauge
3. For Vitodens and Vitopend:
Open the gas shut-off valve.
For Vitoladens:
Open the shut-off valves in the oil
lines (at the oil tank and filter).
Note
Ask your heating contractor to
explain the positioning and handling
of these components.
4. Switch ON the power supply, e.g. at
a separate MCB/fuse or a mains iso-
lator.
5. Turn the ON/OFF switch " " ON.
After a short time, the standard menu
is displayed (see page 10) and the
green ON indicator illuminates. Your
heating system and, if installed, your
remote control unit are now ready for
operation.
Start-up/shutdown
D
15