Start-Up/Shutdown; Starting The Heating System - Viessmann VITODENS 050-W Operating Instructions Manual

Start-up/shutdown

Starting the heating system

We recommend you contact your heat-
ing contractor if you are planning to take
your heating system out of use for long
periods.
1. Check the heating system pressure
at pressure gauge A:
The system pressure is too low if the
indicator points to the area below
0.8 bar(80 kPa). In this case, top up
with water or notify your local heating
contractor. When topping up the sys-
tem with water the pressure (cold)
should not exceed 1.5 bar.
2. Open gas shut-off valve C.
3. Switch ON the power supply, e.g. at
a separate MCB/fuse or a mains iso-
lator.
12
B A C
2 3
1
4
r
0
b a
4. Switch ON/OFF switch B ON.
The control unit carries out a self test
after being switched ON.
Your heating system and room tem-
perature controller (if installed) are
now ready for operation.
Note
Boiler frost protection is enabled.
°C