Start-Up/Shutdown; Starting The Heating System - Viessmann VITODENS Operating Instructions Manual

Start-up/shutdown

Starting the heating system

Position of the gas shut-off valve at
the Vitodens 333-F
12
1. Check the heating system pressure
at pressure gauge A: The system
pressure is too low if the indicator
points to the area below 1.0 bar. In
that case, top up with water or
notify your local heating contractor.
2. For open flue operation:
Check whether the ventilation aper-
tures in the installation room are
open and unobstructed.
Note
With open flue operation, the com-
bustion air is drawn from the instal-
lation room.
3. For Vitodens and Vitopend:
Open gas shut-off valve B.
For Vitoladens:
Open the shut-off valves in the oil
supply lines (at the oil tank and fil-
ter).
4. Switch ON the power supply, e.g. at
a separate MCB/fuse or a main iso-
lator.
5. Switch system ON/OFF switch
"8"C ON.
The green indicator (ON indicator)
illuminates. The boiler water tem-
perature is displayed after a short
time. Your heating system and, if
installed, your remote control unit
are now ready for use.