Checking The Gas Type; Function Sequence And Possible Faults - Viessmann Vitodens 300 Service Instructions Manual

Initial start-up, inspection, maintenance
Further details regarding the individual steps

Checking the gas type

!
Important information
The natural gas version cannot be
converted to LPG.
1. Enquire about the gas type and
Wobbe index (Wo) from your local
mains gas or LPG supplier.
Note
In the delivered condition, Vito-
dens 300 is set up for natural gas E
or LPG P.
Natural gas E version:
The boiler can be operated in the
Wobbe index range 12.0 to
3
16.1 kWh/m (43.2 to 58.0 MJ/m
LPG P version:
The boiler can be operated in the
Wobbe index range 21.4 to
3
22.5 kWh/m (76.9 to 81.0 MJ/m
2. Compare the gas category (gas
type) and gas group with the details
on the label on the gas train and
the cap plate.

Function sequence and possible faults

For further details regarding faults, see page 75.
10
3. If these details do not match the
fuel provided, the burner must be
converted according to the details
provided by the mains gas or the
LPG supplier.
See separate conversion kit
installation instructions.
After conversion from
&
Natural gas E or LPG P to nat-
3
). ural gas LL
The boiler can be operated in the
Wobbe index range 10.0 to
13.1 kWh/m
3 3
). m ).
&
LPG P to natural gas E
The boiler can be operated in the
Wobbe index range 12.0 to
16.1 kWh/m
3
m ).
4. Set the gas type via coding
address 1E at the control unit.
Note
To call up code 1 and for setting the
coding address, see page 38.
5. Record the gas type in the service
report on page 118.
(cont.)
3
(36.0 to 47.2 MJ/
3
(43.2 to 58.0 MJ/