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Building Technologies Basic Documentation LMV5... CC1P7550en
22 Revision history 22.05.2018
Pressure switch relief valve, inverted control
The signal can be inverted via the relevant parameter.
The output is only active when the fan operates.
External controller contact with Manually on
If the burner is in operation with Manually on, the external controller on contact (X5-03
pin 1) acts as a shutoff device should overtemperatures occur.
With the exception of operating mode 1 (extLC), the controller contact can be
deactivated if not used as a switch-off device.
Prepurge time after safety shutdown
After safety shutdown, the longer prepurge time PrepurgeSafeGas/Oil becomes active.
Changes to the supplied parameter set
The parameter set has been changed from V20.02.00 to V20.03.00.
The software of the basic card has been changed from V02.20 to V02.30.
The following changes have been introduced:
Driving to the low-fire positions
After ignition, first the positions of curvepoint P1 are approached, independent of
whether or not the minimum load has been set to a higher value. Once the positions of
P1 are reached, the set minimum load is approached.
22.2.1.2 Basic unit LMV52, introduction V01.10
Introduction of serial software version V01.10.
22.2.1.3 Basic unit LMV51, Software from V02.30 to V02.50
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