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 300 ppm.
■ An antifreeze additive suitable for heating systems can be mixed with the
fill water.
r r
18
1. Close the gas shut-off valve.
2. Switch ON the power.
3. Turn rotary selector "rt" anticlock-
wise for less than 2 s and then clock-
wise back to the control range on the
right.
Filling function is enabled. This func-
tion will end automatically after
20 min or after ON/OFF switch has
been turned OFF.