Viessmann Vitovalor 300-P Installation And Service Instructions For Contractors page 64

Commissioning, inspection, maintenance
Checking the static pressure and supply pressure
9. Open the gas shut-off valve and start the appli-
ance.
Danger
Gas escaping from the test connector leads
to a risk of explosion.
Check gas tightness at test connector
On the fuel cell module
C
A
B
Fig. 64
01. Undo screws
A and open clasps
02. Remove cover panel
03. Close the gas shut-off valve.
04. Undo screw in test connector
remove it. Then connect the pressure gauge.
05. Open the gas shut-off valve.
06. Measure the static pressure.
Set value: max. 25 mbar (2.5 kPa).
07. If the set value is exceeded, take steps according
to the table on page 65.
64
A
6x
B .
.
C
but do not
D
.
D
08. Close the gas shut-off valve, remove the pressure
gauge, tighten the screw in test connector
09. Open the gas shut-off valve.
Danger
Gas escaping from the test connector leads
to a risk of explosion.
Check test connector
10. Remount cover panel
(cont.)
D
for gas tightness.
D
.
C
.