Viessmann Vitopend 100-W Installation And Service Instructions Manual page 46

Commissioning, inspection, maintenance
Further details regarding the individual steps
11. Check (do not adjust) the upper
heating output
Ensure heat is being drawn off by
the heating system. Do not draw
off DHW.
Use / to switch directly
between the lower and upper heat-
ing output.
For the upper heating output,
select "HI".
Note
Operation with the upper or lower
heating output is automatically
reset after approx. 30 min, or press
OK and MODE simultaneously
until flashes.
Gas combi boiler
Rated heating output
Natural gas (12T)
Nozzle ø
Nozzle pressure
based on a supply pressure of 20 mbar
Note
The values for nozzle pressure given in
the tables apply to the following ambi-
ent conditions:
■ Air pressure: 1013 mbar
■ Temperature: 15 °C
Wobbe index see page 42.
46
12. Check the setting values and
13. Turn OFF the ON/OFF switch on
14. Open the gas shut-off valve and
°C
(cont.)
record them in the enclosed "Guar-
antee card".
the control unit (the boiler shuts
down), close the gas shut-off
valve, remove the pressure gauge
and close test connector A with
the screw.
start the appliance.
Danger
Gas escaping from the test
connector leads to a risk of
explosion.
Check the test connector
for gas tightness.
kW 5.4
mm 1.25
mbar 1.1
18 21
1.25 1.25
11.3 14.0