12
In the delivered condition, the boiler is preset for natu-
ral gas E and can be changed over to natural gas LL.
The setting can later be changed back to natural
gas E.
A
Fig. 3
A
Adjusting screw
1.
Turn the adjusting screw on the main volume but-
terfly of the gas train fully towards "
–
".
2.
Turn the adjusting screw in direction "
+
" as detailed
in the table below:
3.
Start the burner.
4.
Measure the CO
2
content in the flue gas and
adjust: See page 16.
Rated heating output
Natural gas LL
Natural gas E
800 kW
5 turns
4 turns
1000 kW
7 turns
6 turns
Commissioning the system
Danger
CO build-up as a result of incorrect burner
adjustment or flue gas system leakage can have
serious health implications.
Always carry out a CO test before and after
work on gas appliances.
■
Vitotronic control unit operating instructions
and service instructions
■
Neutralising system operating instructions
■
Flue system installation instructions
Commissioning, inspection, maintenance
Setting the gas type
5833296
Содержание Vitocrossal CRU 1000
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