1.
Check the inlet pressure of the dia-
phragm expansion vessel.
2.
Close the gas shut-off valve.
3.
Pivot control unit
A
down (see
page 23.)
4.
Fill the heating system at fill valve
B
in heating return
B
. minimum
system pressure > 0.8 bar (see
pressure gauge
C
behind the
hinged cover).
Note
If the control unit had
not already
been switched ON before filling
began: The diverter valve is in cen-
tre position and the system will be
completely filled.
5.
If the control unit
had already
been
switched ON before filling began:
In code 1, set coding address
"2F:2" (see page 66).
At this point, the diverter valve is in
its central position.
Whilst the fill program runs, the dis-
play shows
"bF"
(constant tem-
perature control unit) or "
Filling
"
(weather-compensated control
unit).
6.
Close boiler fill & drain valve .
7.
Set coding address "2F:0".
Further details regarding the individual steps
(cont.)
24
Commissioning, inspection, maintenance
5592
883
GB
Содержание VITODENS 343-F WS4A
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