Checking The Gas Type; Converting The Gas Type For Operation With Lpg And Natural Gas M - Viessmann Vitodens 200-W B2HE Installation And Service Instructions Manual

Venting the heating system
3. OK
4. Use / to select "Commissioning assistant".
5. OK
6. / for "Next" and OK until "Venting"
appears.

Checking the gas type

The boiler is equipped with an electronic combustion
controller that adjusts the burner for optimum combus-
tion in accordance with the prevailing gas quality.
For operation with natural gas, no adjustment is
■
therefore required across the entire Wobbe index
range. The boiler can be operated within the Wobbe
index range 9.5 to 15.2 kWh/m
54.7 MJ/m 3 ).
For operation with LPG or natural gas M, the gas
■
type needs to be changed on the control unit (see
following chapter).

Converting the gas type for operation with LPG and natural gas M

1. To change the gas type on the control unit, see
"Commissioning the system with the commission-
ing assistant"
Note
Mechanical conversion on the gas train is not pos-
sible.
(cont.)
3
(34.2 to
Commissioning, inspection, maintenance
7. OK
The venting function is activated. The display
shows the system pressure.
The venting function ends automatically after
20 min or when you tap OK.
1. Determine the gas type and Wobbe index by ask-
ing your local gas supply utility or LPG supplier.
2. Record the gas type in the service report.
2. Affix label "G31" (supplied with the technical docu-
mentation) adjacent to the type plate on the cover
panel.
39