Viessmann Vitodens 242-F Operations Instructions download pdf (Page 29)

Enter names for heating circuits: Operating instructions

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.

■ Consequently, for natural gas there is no adjustment required across the entire

Wobbe range.

The boiler can be operated in the Wobbe index range 9.5 to 15.2 kWh/m

(34.2 to

54.7 MJ/m

■ Convert the burner for operation with LPG (see "Gas type conversion" on

page 30).

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 30).

3. Record the gas type in the service

report on page 135.

Commissioning, inspection, maintenance

Further details regarding the individual steps

(cont.)

5418 193 GB

Service

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Viessmann Vitodens 242-F Operations Instructions Page 29