Viessmann Vitovalor 300-P Installation And Service Instructions For Contractors page 72

Commissioning, inspection, maintenance
Commissioning the fuel cell module
2. Press SET. Commissioning mode 3 is activated.
Under ITEM, a dot will flash while commissioning
mode 3 is active.
13. 01
ITEM STATE
It will not be possible to carry out commissioning
mode if "n1", "n2" or "n3" is flashing under STATE.
For the meaning of fault messages and to correct
faults, see page 70.
3. Fill with the distilled water supplied.
While indicators "01" to "04" are flashing, continue
to fill with distilled water until they switch to con-
stant. The switch from flashing to constant display
will be repeated several times.
The whole process takes about 40 min.
Phase
01
02
03
04
When phase 04 shows constant, add another 0.5 l
of distilled water so that the integral trap is filled.
!
Please note
Escaping flue gas can damage your health.
Ensure that the integral trap is filled with
water.
Stopping commissioning mode 1 or 3 (in emergency only)
"Commissioning/maintenance" operating mode
must be enabled (MNT illuminates)
Commissioning mode 1: Possible only during phases
■
01 to 05.
■ Commissioning mode 3: Possible only during phases
01 to 04.
1. Select "18" using / .
2. Press and hold SET for at least 3 s. The current
commissioning phase is displayed under STATE.
If commissioning mode is stopped, "End" will
appear under STATE.
18. End
ITEM STATE
72
Duration
min. approx.
4
15
20
0.5
(cont.)
4. The filling process has been completed when
"End" flashes under STATE.
13. End
ITEM STATE
Press SET to complete commissioning mode 3.
Note
A fault has occurred during the commissioning
process if in phase 04 the display shows alter-
nately "End" and "nP".
Turn the ON/OFF switch on the fuel cell module
OFF and then ON again. Then restart commission-
ing mode 3.
5. Remove the funnel from the filler neck and secure
it to the front panel with the screw (see page 69).
6. Replace the cover on the distilled water filler neck
and secure it with the screw (see page 69).
3. Press SET. 01 is displayed under STATE.
"01" appears under ITEM, and the dot disappears.
Commissioning mode has terminated.