Viessmann VITODENS 100-W Manual page 44

Montageablauf
Commissioning and testing
Hinweis
Additive combinations are permitted only if approved additive suppliers recom-
mend it and always according to supplier´s dosage recommendation.
It is essential that the procedure below is followed to ensure that all the air in the
boiler heat exchanger and the system is completely vented prior to firing the
appliance.
Filling the heating system
!
Achtung
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 potable quality.
Soften fill water harder than 150 ppm temporary hardness.
Inhibitors or antifreeze additives suitable for heating systems should
be injected or added manually.
Fill and vent the the system ensuring
that the air has been removed from all
drain and vent points on the system.
Checking static and supply pressure
Gefahr
CO formation, as a result of incorrect burner adjustment,can lead to
severe health problems.
Carry out a CO test prior to, and after, work on gas equipment.
44
(Fortsetzung)
1. Close the gas shut-off valve.