Checking The Gas Type - Viessmann VITOCROSSAL 200 Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps

Checking the gas type

1. Check the gas type and Wobbe index
(Wo) with your gas supply utility.
■ With the natural gas E setting, the
boiler can be operated in the
Wobbe index range 12.0 to
3
16.1 kWh/m
■ With the LPG P setting, the boiler
can be operated in the Wobbe
index range 20.3 to 21.3 kWh/m
(72.9 to 76.8 MJ/m
Rated heating output
Restrictor for natural gas E
Restrictor for LPG P
3. Record the gas type in the report (on
page 86).
10
(43.2 to 58.0 MJ/m
3
).
kW
7 mm
7 mm
2. In the delivered condition, the burner
is set up for natural gas E. If required,
convert the burner to a different gas
type (see from page 11) in accord-
ance with details provided by your
gas supply utility.
3
).
Note
The 500 kW burner requires a natural
3
gas restrictor. A natural gas restrictor
is not required for the 400 and
620 kW burners.
400
−
14.0
(cont.)
500
21.5
14.8
620
−
17.2