Checking The Gas Type - Viessmann VITOCROSSAL 200 CM2 Service Instructions For Contractors

Commissioning, inspection, maintenance
Opening the boiler
Fig. 5

Checking the gas type

1. Check with your gas supply utility regarding the
gas type and Wobbe index (Wo).
With the natural gas E setting, boilers can be
■
operated in the Wobbe index range 12.0 to
3
16.1 kWh/m (43.2 to 58.0 MJ/m
■ With the natural gas LL setting, boilers can be
operated in the Wobbe index range 10.0 to
13.1 kWh/m 3 (36.0 to 47.2 MJ/m
).
c
■ With the LPG P setting, boilers can be operated
in the Wobbe index range 20.3 to 22.5 kWh/m
(72.9 to 81.2 MJ/m 3
12
(cont.)
3
).
3 ) (not in
a
).
4. To remove the side panel and top panel, undo the
M6 screws on the top rail and on the lower support.
5. Close the gas shut-off valve.
2. In the delivered condition, the burner is set up for
natural gas E. If required, convert the burner to a
different gas type in accordance with the details
provided by your gas supply utility: See page 13
onwards.
3. Record the gas type in the report on page 62.
or
3