Operating instructions

20
Venting the boiler by flushing out (after venting system)
A
BC
1. Connect the drain hose on shut-off
valve
A
to a drain.
2.
Close shut-off valve B.
3.
Open valves A and C and flush at
mains pressure, until no sound of
escaping air can be heard.
4.
First shut off valve A then valve
C
.
5.
Operating pressure ≥ 0.8 bar; adjust
with valve
C
.
6.
Open shut-off valve B.
Adjusting circulation pump to suit heating system
Only for gas fired condensing combi boilers:
In the delivered condition, the circulation pump in heating mode is set to stage 1. If
necessary to suit the heating system, the circulation pump can be adjusted to stage
2.
1. Turn ON/OFF switch ON.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5366 836 GB