Viessmann Vitodens 100-W Installation And Service Instructions Manual page 51

Changing from LPG to natural gas
Checking the CO
See page 26.
content
2
Gas type conversion
(cont.)
5. Do not adjust the rotary selectors
for at least 15 s. The set operating
mode is then saved and the control
unit returns to standard mode.
6. Turn the ON/OFF switch off and on
again. The selected gas type is
now enabled
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