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03.06.20, Subject to alterations
Gas pressure monitor
15 Gas pressure monitor
15.1 Gas pressure switch min.
The
gas pressure switch MIN
at the gas fitting ser-
ves to monitor the gas inlet pressure. If the minimum
gas inlet pressure is not reached (factory setting), the
burner is switched off. The burner automatically
starts again when the minimum pressure is excee-
ded. The gas pressure monitor as
density control
DK
generally serves to check the valves and must be
set to 50% of the static gas inlet pressure.
The monitoring of the gas inlet pressure and the
tightness control are either carried out only with the
gas pressure monitor DK
(the jumper GDW MIN
must not be removed)
or with the gas pressure
switch MIN and the gas pressure switch DK
(the
GDW MIN jumper has to be replaced with the
connection of the gas pressure switch MIN)
.
When using the gas cycle MB-VEF 412, the connec-
tion is made via the 7-pin connector and is only
evaluated as DK MIN. The plug bridge must not be
removed
Additional parameterization of the LMV is not re-
quired here.
15.2 Gas pressure monitor max.
Optionally a gas pressure switch max. can be incorporated.
The LMV and the wiring have been prepared such that only the jumper in the socket part (brown) at the
burner needs to be removed. In addition, the male connector and the gas pressure switch max. must be
wired in accordance with the circuit diagram. If the gas pressure switch max. has tripped, a fault is shown
in the display (AZL).
First, the gas pressure switch max. must be unlocked; to do this the lid of the gas pressure switch max.
must be unscrewed and the red button pressed.
Then, the fault in the display can be deleted (press the
i/reset
button for 3 sec.).
