46
In the delivered condition, the heating circuits are des-
ignated
"Heating circuit 1"
,
"Heating circuit 2"
and
"Heating circuit 3"
(if installed).
If the system user prefers, the heating circuits can be
designated differently to suit the specific system.
Enter names for heating circuits:
Operating instructions
Checking the gas type
The appliance is equipped with an electronic combus-
tion controller that adjusts the burner for optimum com-
bustion in accordance with the prevailing gas quality.
■
For operation with natural gas, no adjustment is
therefore required across the entire Wobbe index
range.
The appliance can be operated in a Wobbe index
range of 9.5 to 15.2 kWh/m
3
(34.2 to 54.7 MJ/m
3
).
■
For operation with LPG, the burner must be conver-
ted (see "Gas type conversion" on page 46).
1.
Determine the gas type and Wobbe index by ask-
ing your local gas supply utility or LPG supplier.
2.
For operation with LPG, convert the burner (see
page 46).
3.
Record the gas type in the report on page 155.
Converting the gas type (only for operation with LPG)
1
2
A
B
Fig. 32
1.
Set adjusting screw
A
on the gas train to "2".
2.
Turn the ON/OFF switch on.
3.
Select the gas type in coding address "82":
■
Calling up code 2
■
"General"
■
Select coding address "11" and set value "9".
Confirm with
OK
. The display shows "11:0".
Note
Setting the code to "11:9" results in the process
circuit being cooled. This can take approx.
20 min. Only then is coding address "82" visible.
■
Select coding address "82" and set value "1"
(operation with LPG). Confirm with
OK
.
■
Select coding address "11" and set value "8".
Confirm with
OK
. The display shows "11:0".
■
End service functions.
4.
Open the gas shut-off valve.
5.
Affix label "G31" (enclosed with the technical docu-
mentation) next to type plate
B
.
Information on automatic testing of the flue gas temperature sensor
When the first heat demand is received after the com-
missioning assistant has been closed, the control unit
automatically checks the function of the flue gas tem-
perature sensor.
The display shows:
"Test flue gas temp. sensor"
and
"Active"
.
Note
If the flue gas temperature sensor is positioned incor-
rectly (see page 103), commissioning is cancelled and
fault message A3 is displayed (see page 108).
Commissioning, inspection, maintenance
Naming the heating circuits
5678 044 GB
Summary of Contents for D2RA
Page 113: ...113 Maintenance Checking the Vitotronic 200 H accessories cont 5678 044 GB Maintenance ...
Page 133: ...133 Parts lists Sorption module hydraulics cont 5678 044 GB Components ...
Page 136: ...136 0001 0002 0003 0004 0005 Fig 83 Parts lists Miscellaneous 5678 044 GB Components ...
Page 163: ...163 5678 044 GB ...
