Siemens LMV37.4 Series Basic Documentation page 231

Building Technologies Division
Industry Sector
Software version V02.90

Optimization: Indication of errors on the parameter and info / service menu

Optimization: Rectification of eBus error telegrams, correction of manufacturer's
code for safety limit thermostat, extension of service data interrogation PB:03h
SB:10h by the meter readings of the second fuel, PB:05h SB:09h shows the fuel
currently burnt

Optimization: Curve setting invalid (OFF UPr) upon change to cold settings

Optimization: Setting of minimum / maximum output via the parameterized
output

Optimization: Shorter startup time with valve proving (prepurge or postpurge time
simultaneously with valve proving)

New function: Loss-of-flame test (TÜV test), forced shutdown of fuel valves

Extension: Oil pressure switch-min active from phase 38 or safety time (phase 40)
Extension: Setting of dead band zone for load controller contacts, analog input and
BACS output

Extension: POC for firing on oil (alternative to pressure switch-max)

New function: Valve proving via pressure switch-min

New function: Abortion of postpurging (see postpurge time, extraneous light test in
phase 78)

New function: Evaluation of load controller contacts for multistage operation (normal
/ interchanged)

New fuel trains LO Gp, LO-2V, LO Gp-2V

New operating modes (e.g. without actuator)

New function: Backup / restore via AZL2... (only with new software version AZL2...)
Software version V03.00
Optimization: Maximum time of safety phase reduced from 28 to 27 seconds
Basic Documentation LMV37.4...
30 Revision history of basic unit LMV37.4...
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CC1P7546en
20.09.2013