Further Details Regarding The Individual Steps; Filling The Heating System - Viessmann Vitodens 200 Service Manual

Further details regarding the individual steps

Filling the heating system

1. Check the charge pressure of the
diaphragm expansion vessel.
2. Close the gas shut-off valve.
Initial start-up, inspection, maintenance
!
3. Important information
Unsuitable fill water
increases the level of
deposits and corrosion and
may lead to boiler damage.
&
Thoroughly flush the
entire heating system prior
to filling with water.
&
Only use fill water of pota-
ble quality.
&
Soften fill water harder
than 20 °dH (3.58 mmol/l).
For suitable means of
water softening, see the
Vitotec price list.
&
An anti-freeze additive
suitable for heating sys-
tems can be mixed with
the fill water.
Fill the heating system via the boi-
ler fill & drain valve A.(minimum
system pressure > 0.8 bar).
Note
The diverter valve actuator will be
in the central position, and the sys-
tem will be completely filled, if the
control unit has not been switched
ON before the system was filled.
7