Gas Type Conversion (Only For Operation With Lpg); Function Sequence And Possible Faults - Viessmann Vitodens 200-W Series Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Checking the gas type
For operation with natural gas no adjustment is
■
therefore required across the entire Wobbe index
range.
The boiler can be operated in the Wobbe index
range 9.5 to 15.2 kWh/m
For operation with LPG the burner must be conver-
■
ted (see "Gas type conversion" on page 26).

Gas type conversion (only for operation with LPG)

A
Fig. 21

Function sequence and possible faults

Control unit issues a heat
demand
Yes
Fan starts
Yes
Ignition
26
(cont.)
3 (34.2 to 54.7 MJ/m 3 ).
Display
No
After approx. 51 s, fault F9
No
Fault EE
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 26).
3. Record the gas type in the report on page 112.
1. Set adjusting screw
2. Turn on the ON/OFF switch "
3. Select the gas type in coding address "82":
Call up code 2
■
Call up "General" (control unit for weather-com-
■
pensated operation)
or
Group "1" (constant temperature control unit)
In coding address "11", select value "9"
■
In coding address "82", select value "1" (LPG
■
operation)
In code "11", select value
■
End service functions.
■
4. Open the gas shut-off valve.
5. Affix label "G 31" (included with the technical docu-
mentation) in a clearly visible position near the gas
train on the cover panel.
No
on the gas train to "2".
A
".
8
"9".
≠
Action
Increase set value and en-
sure heat is drawn off
Check the fan, fan con-
necting cables, power at
the fan and fan control
Check ignition module
(control voltage 230 V
across plugs "X2.1" and
"X2.2"). Check the gas
supply.