25 … 96
24 … 96
Printed in Germany • Edition 04.18 • Nr. 271 958
Gas valve V1 X13
The gas valve V1 switches depend-
ing on the state, see line V1 in the ow
chart.
V2 boost, energy interrupt X14
The output can be used as V2 boost
function, as energy interrupt function or
as "HT active".
Congurable via parameter P80:
Depending on the parameter value,
another line in the ow chart is valid.
Flame detector
See Annex Flame detector.
Air pressure switch X18
The input can be used for the connec-
tion of an air pressure switch. Congur-
able via parameters P84 and P16.
HT signal, gas pressure switch or
POC X17
The input can be congured via param-
eter P18. The high temperature NC
signal can be connected to the input.
If this function is used, the X16 must
be assigned to the respective inverse
signal (NO).
As an option, the input can be used
for the connection of a gas pressure
switch or as POC function.
Parameterisation mode (manual
operation)
A switch in the connection chamber
is used for switching between param-
eterisation and automatic mode.
The MPA registers a switching opera-
tion not before a restart.
After connecting the mains supply, a
messages is prompted on the display
in the parameterisation mode request-
ing you to enter the code. Enter the
password for service or OEM level.
After having changed the level, the se-
lected parameters are activated one af-
ter the other. An overview of the param-
eters and their order can be found in
section Parameterisation display. The
parameter values may be modied by
pressing the keys + and -. The unlock
key is used for saving the displayed
value. Press the ← key to return to the
previous position or parameter.
As the display has two positions only,
some values are represented in an
optimised resolution. If the set value
cannot be displayed in this resolution,
the display shows "– –". The value may
be changed in a resolution that can be
displayed.
Once all parameters are set, all values
must be conrmed once again. This
completes setting the parameters (H5
is displayed) and the parameter switch
can be reset to "Auto" position.
If you do not press any key for 30
minutes in parameterisation mode, the
program tries a restart.
Switch to "Auto"
With this switch position, the MPA is
working in normal operation. If moni-
tored parameters were changed and
not released, the MPA switches to fault
mode with 0x60 error.
Parameter switch
Left "Auto" position
Right "Para" position