Further Details Regarding The Individual Steps; Filling The Heating System - Viessmann VITODENS 111-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Further details regarding the individual steps

Filling the heating system

!
Please note
Unsuitable fill water increases
the level of deposits and corro-
sion and may lead to boiler dam-
age.
■ Thoroughly flush the entire
heating system prior to filling it
with water.
■ Only fill with water of potable
quality.
22
r r
■ Soften fill water harder than
300 ppm.
■ An antifreeze additive suitable
for heating systems can be
added to the fill water.
1. Close the gas shut-off valve.
2. Switch ON power and wait until the
display shows the boiler water tem-
perature.
3. Turn rotary selector "rt" fully anti-
clockwise, until the display shows
"SERV".
Within 2 s return the rotary selector to
the r.h. control range.
The display shows "r" and "w".
Filling is active.
This function will end automatically
after 20 min or after the ON/OFF
switch has been turned off.