Checking The Static Pressure And Supply Pressure - Viessmann VITODENS 200-W B2HA Installation And Service Instructions Manual

Function sequence and possible faults
Yes
Burner in operation
Yes
Automatic calibration of
the combustion controller
For further details regarding faults, see page 86.

Checking the static pressure and supply pressure

Danger
CO formation as a result of incorrect burner
adjustment can have serious health implications.
Check the CO content before and after carrying
out work on gas appliances.
Fig. 29
No
Shuts down below the set
boiler water temperature and
restarts immediately
Fault E3
No
Fault Eb
A
Commissioning, inspection, maintenance
(cont.)
Check the flue system for
tightness (flue gas recircula-
tion); check the gas flow
pressure.
Ensure adequate heat trans-
fer. Press reset button R.
Check gap between ionisa-
tion electrode and burner
gauze assembly.
Check allocation of gas type
(coding address 82, gas train
setting).
Check flue system; remedy
flue gas recirculation if re-
quired.
Press reset button R.
Operation with LPG
Purge the LPG tank twice on commissioning or
replacement. Vent the tank and gas connection line
thoroughly after purging.
1. Close the gas shut-off valve.
2. Release screw inside test connector "PE" on
A
one of the two gas trains, but do not remove it.
Connect the pressure gauge.
3. Open the gas shut-off valve.
4. Check the static pressure and record the actual
value in the report on page 114.
Set value: max. 57.5 mbar (5.75 kPa).
5. Start the boiler.
Note
During commissioning, the appliance can enter a
fault state because of airlocks in the gas line. After
approx. 5 s, press R to reset the burner.
39