Gas Type Conversion (Only For Operation With Lpg); Checking The Static Pressure And Supply Pressure - Viessmann Vitodens 242-F Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Checking the gas type
1. Determine the gas type and Wobbe index by asking
your local gas supply utility or LPG supplier.
2. For operation with LPG, convert the burner (see
page 44).

Gas type conversion (only for operation with LPG)

A
Fig. 35

Checking the static pressure and supply pressure

Danger
CO formation as a result of incorrect burner
adjustment can have serious health implications.
Always carry out a CO test before and after
work on gas appliances.
Operation with LPG
Purge the LPG tank twice when commissioning or
making a replacement. Vent the tank and gas connec-
tion line thoroughly after purging.
44
(cont.)
3. Record the gas type in the report on page 148.
1. Set adjusting screw
2. Turn on ON/OFF switch
3. Select the gas type in coding address "82":
■ Call up code 2
■ "General"
■ Select coding address "11" and set value "9".
Confirm with OK. The display shows "11:0".
Select coding address "82" and set value "1"
■
(LPG operation). Confirm with OK.
Select coding address "11" and set value
■
Confirm with OK. The display shows "11:0".
■ End service functions.
4. Open the gas shut-off valve.
5. Affix label "G31" (supplied with the technical docu-
mentation) adjacent to the type plate on the cover
panel.
A
Fig. 36
1. Close the gas shut-off valve.
A on the gas train to "2".
.
"9".
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