Checking The Gas Type; Conversion To Natural Gas Ll - Viessmann VITOCROSSAL 200 Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps

Checking the gas type

1. Determine the gas type and Wobbe
index (Wo) from your gas supplier.
& With the natural gas E setting,
the boiler can be operated in the
Wobbe index range 12.0 to 16.1
3
kWh/m (43.2 to 58.0 MJ/m
& With the natural gas LL setting,
the boiler can be operated in the
Wobbe index range 10.0 to 13.1
3
kWh/m (36.0 to 47.2 MJ/m

Conversion to natural gas LL

(not in a and c)
1. Close the gas shut-off valve.
2. Switch OFF the control unit ON/
OFF switch.
3. Switch OFF the main isolator (out-
side the installation room) or the
power supply and prevent
unauthorised reconnection.
4. Pull cables from gas train.
10
2. In the delivered condition, the burn-
er is set up for natural gas E. If
required, convert the burner in
accordance with details provided
by your gas supply utility to a differ-
3
). ent gas type (see page 10).
3. Record the gas type in the service
report (on page 61).
3
).
5. Undo fitting A.
6. Pull compensation hose G from
gas train.
(cont.)