Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors page 75

Filling with distilled water and starting the...
10. Fill with distilled water (VDE 0510).
Distilled water (5 l) is available as an accessory.
When the displays "01" to "02" flash:
Fill with distilled water until water runs from the
trap drain at the back.
!
Please note
Commissioning with non-distilled water
(VDE 0510) (e.g. tap water) will damage the
appliance.
Fill only with the distilled water supplied or
available as an accessory (VDE 0510).
Danger
Escaping flue gas can damage your health.
Ensure that the integral trap is filled with
water.
11. Once water has run from the drain, filling is com-
plete.
12. Remove funnel from the filler neck and secure
B
it to the front panel with the screw.
13. Push cover onto the filling aperture and secure
A
with the screw.
14. Fit the closure of vent aperture
15. Confirm filling with SET. A venting program will
then start.
The process takes about 40 to 60 min.
Commissioning lapse times
Phase
01 Preparation for filling with distilled water.
02 Fill with distilled water. Confirm filling.
03 - 05 Ventilation programme, distilled water circuit
06 - 10 Heating
11 - 12 Power generation (up to specified electrical output > 600 W)
Fault messages
Display in Cause
STATE
n1 No heat transfer from the fuel cell
module possible
n2 Fuel cell module is in cooling mode.
n3 Fuel cell fault
16. When "05" is displayed in STATE, the venting
17. When "12" is displayed in STATE, power genera-
18. Terminate maintenance mode if the transferred
19. Replace the programming unit cover on the fuel
.
C
Remedy
Remedy the cause for the lack of heat transfer.
Use consumers to draw off heat until the "n1" message
disappears.
Wait until cooling mode has terminated and the "n2"
message disappears.
The process may take up to 90 min.
Read the fault message on the control unit and take
measures according to the information in "Trouble-
shooting".
Commissioning, inspection, maintenance
(cont.)
process has finished and the start phase will com-
mence.
The starting procedure automatically follows the
venting program and takes approx. 60 min.
tion starts.
Indicators "GEN" and "GRD" illuminate.
Note
A fault has occurred during the commissioning
process if the display alternately shows "End" and
"n1", "n2" or "n3". For explanations see the fol-
lowing table.
■ Find the cause of the fault. Remove the fault.
■ Then switch off the ON/OFF switch for the fuel
cell module and switch it on again after
10 seconds. Initiate new starting procedure.
If a fault recurs or the cause of the fault is
■
unclear, notify Viessmann Technical Service.
electrical output is more than 600 W: See energy
cockpit and the next chapter.
cell module.
Duration (approx. min)
1
5
40 to 60
40 to 60
10 to 25
75