24
Note
If the control unit has not been
switched ON prior to filling the sys-
tem, then the servomotor of the
diverter valve will still be in its central
position, and the system will be com-
pletely filled.
Note
Lever on valve
B
must be in the
"l.h." position.
4.
If the control unit had already been
switched ON before filling began:
Switch control unit ON and activate
filling program (see next steps).
Note
For function and details of the fill pro-
gram, see page 138.
5.
Close boiler drain & fill valve
A
.
Activating filling function with
weather-compensated control units:
1.
Press
OK
and
simultaneously for
approx. 4 s.
2. "Service functions"
3. "Filling"
4.
Ending filling function:
Press
OK
or .
Activating filling function with con-
stant temperature control units:
1.
Press
OK
and
simultaneously for
approx. 4 s.
2.
Select
"
4
"
and confirm with
OK
.
The display shows
"bF on"
when the
filling function is activated.
3.
Ending filling function:
Press .
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5457 552 GB
Summary of Contents for FS2B
Page 163: ...163 5457 552 GB ...
