Selecting The Language (If Required) - Only For Weather- Compensated Control Units; Checking The Gas Type - Viessmann VITODENS 200-W Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
Selecting the language (if required) – only for weather-compen-
sated control units
Note
When the unit is first taken into operation
the display is in German (default lan-
guage setting):
Select heating circuit (see step 1.)
Heizkreis wählen
1
z
Outside temperature (see step 3.)
Außentemperatur
13
i

Checking the gas type

The boiler is equipped with an electronic combustion control unit that adjusts the
burner for optimum combustion in accordance with the prevailing gas quality.
■ The boiler can be operated with natural gas in the Wobbe index range 10.0 to
3
16.1 kWh/m (36.0 to 58.0 MJ/m
■ Convert the burner for operation with LPG (see "Gas type conversion" on
page 13).
1. Determine the gas type and Wobbe
index by asking your local gas supply
utility or LPG supplier.
2. Convert the burner for operation with
LPG (see page 13).
12
°C
3
) without conversion.
Press the following keys:
1. c "Heizkreis wählen" (select
heating circuit) is displayed.
2. d to confirm; wait approx. 4 s.
3. c press this button again,
"Außentemperatur" (outside
temperature) is displayed.
4. b for the required language.
5. d to confirm.
3. Record the gas type in the service
report on page 115.
(cont.)