64
1.
Close shut-off valves A and B on
the heating water side (lever to the
right).
2.
Connect the drain hose to valve D
and connect it to a drain outlet.
3.
Open valves C and D and vent
(flush) using mains pressure until no
more air noise is audible.
4.
Close valves C and D, open shut-
off valves
A
and
B
on the heating
water side.
5. Adjust system pressure at fill valve
C
to > 1.0 bar.
Venting the heating system
1. Vent heating system by bleeding the
radiators.
Vent the heating water buffer cylinder
separately when operating with a
multi mode heating water buffer cyl-
inder (see page 8).
2. Check the system pressure.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5618 294 GB
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