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Fill the system and vent it properly to safe-
guard the perfect boiler function.
Before connecting the boiler
Note
to the heating system, flush
the entire system to remove
residues such as welding
pearls, hemp, putty, etc. from
the pipework.
The boiler and central heating
Note
system may only be filled, if a
type-tested safety valve (ope-
ning pressure maximum 3 bar)
has been installed.
• Connect a water hose to the filling/drain
valve (on-site).
• Open the cap of the quick-action air-vent
valve of the safety assembly (accessory)
by one revolution, but do not remove
the cap.
• With the boiler in a cold condition, fill
the heating system slowly via the fill
and drain valve, until 1 bar pressure is
indicated. Inhibitors are not permissible.
22
Filling the heating system
Filling the heating system
Boiler fill and drain valve
Automatic air-vent valve
Connection for venting
and safety flow
Filling
Hose connection
Locking cap
Automatic
air-vent valve
3060918_1203
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