Further Details Regarding The Individual Steps; Filling The Heating System - Viessmann VITODENS 100-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 corrosion and may
lead to boiler damage.
■ Thoroughly flush the entire heating system prior to filling it with water.
■ Only use fill water of potable quality.
■ Soften fill water harder than 16.8 °dH (3.0 mmol/l).
■ An antifreeze suitable for heating systems can be added to the fill water.
20
r r
1. Close the gas shut-off valve.
2. Switch ON the power supply.
3. Turn rotary selector "rt" anticlock-
wise for less than 2 s and then clock-
wise back to the control range on the
right.
"SERV", "r" and "w" appear on
the display. Filling function is ena-
bled.
This function will end automatically
after 20 min or after ON/OFF switch
has been turned OFF.