Basic Unit Lmv52, Software From V01.30 To V04.10; Basic Unit Lmv52, Software From V04.10 To V04.20 - Siemens LMV50 Series Manual

Building Technologies

22.2.1.4 Basic unit LMV52, Software from V01.30 to V04.10

The product nos. of the LMV5 will change as follows:
LMV51.0x0Bx LMV51.0x0Cx
LMV51.1x0Bx LMV51.1x0Cx
LMV51.200Ax no modification
LMV52.2x0Ax LMV52.2x0Bx
To operate the LMV5, it is necessary to have AZL5 software version 04.10 or higher
installed. Using this software, all AZL51 of the B-series or higher and all AZL52 can be
updated. The passwords are now encoded.
1. Introduction of a preset load for testing the safety limit thermostat.
2. Introduction of burner startup without prepurging.
3. Prepurge times 1 (t30) and 3 (t34) can be set at the OEM level.
4. Introduction of repetition counter at the OEM level for loss of flame during operation
(factory setting = 2).
5. Alarm in the event of start prevention in standby mode.
In the case of start prevention with no request for heat, it has previously not been
possible to set off an alarm. Now, via parameterization, an alarm can also be
triggered in standby mode.
6. The inputs for oil are no longer checked when firing on gas. Likewise, the inputs for
gas are no longer checked when firing on oil.
7. The maximum filling and evacuation times for gas valve proving are now limited by
the maximum permissible safety time for startup. This affects in particular the burner
control versions that use the American standard parameter set.
8. Introduction of maximum load limitation at the Enduser level.
9. Hiding an adjustable load range aimed at reducing resonance phenomena in the
burner-boiler-stack system.
10. The fuel actuator can be deactivated (only with LMV52).
11. Flue gas recirculation (FGR) (only with LMV52).
Actuator AUX3 can be employed for controlling the damper used with flue gas
recirculation (FGR). To improve the burner's startup characteristics, only this
actuator can be driven from its ignition position to the adjusted curve, either delayed
or depending on the flue gas temperature.
12. Option: No prepurge for gas burners.
As per EN 676, the prepurge time can be skipped if a valve proving system is
installed.
13. Changing the external light test for OEMs.
Now the OEM is able to skip the extraneous light test in the start sequence.
14. The curvepoints can now be adjusted without actually running the actuators to the
adjusted positions.
15.The guard (alarm) for the maximum pressure can be opened with heavy oil in the
phases 38 and 44 for the duration of the pressure switch-response time.

22.2.1.5 Basic unit LMV52, Software from V04.10 to V04.20

1. Check of AZL5 software version changed to V03.60 or higher.
2. Handling of open / closed release contact changed.
3. Delayed O2 sensor test until test conditions are reached.
4. The plausibility check for the running time control with multistage operation was
corrected.
5. Timing problem in connection with flying start of VSD rectified.
Basic Documentation LMV5...
22 Revision history
305/327
CC1P7550en
22.05.2018