8
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 with a water hardness in excess of the following values, e.g.
with a small softening system for heating water (see the Viessmann Vitoset
pricelist):
–
Vitodens 200-W to 45 kW: 3.0 mol/m
3
–
Vitodens 200-W from 60 kW and multi-boiler systems: 2.0 mol/m
3
■ An antifreeze additive suitable for heating systems can be mixed with the
fill water. The antifreeze manufacturer must verify its suitability.
A
1.
Check the pre-charge pressure of the
diaphragm expansion vessel.
2.
Close the gas shut-off valve.
3.
Fill the heating system at the boiler fill
& drain valve
A
(on the connection
set, accessories or on-site). Minimum
system pressure
>
1.0 bar.
4.
Close boiler fill & drain valve
A
.
Commissioning, inspection, maintenance
Further details regarding the individual steps
5692 760 GB
Summary of Contents for VITOCONTROL-S, WB2B
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