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Building Technologies Basic documentation LMV37.4... CC1P7546en
9 Connection to load controllers 17.12.2018
9.7 Prioritization of load controller sources
To simplify configuration of the LMV37.4, the load controller source need not be
selected. The LMV37.4 automatically detects the available load controller sources and
selects them. If several sources are used, they are selected according to the following
priorities:
Parameter 942 Priority Active load controller source
1 highest Chapter Load controller ON-contact X5-03, pin 1
When the input is activated, the other load
controller sources are assessed according to
their priorities. When the input is deactivated, the
burner is off
1 2 Chapter Load output with curve settings
2 3 Chapter Manual output
3 4 Chapter Default output via building automation
X92
4 5 Chapter External load controller via analog input
X64 pin 1/pin 2
5 6 lowest Chapter External load controller via contacts X5-
03, pin 2/pin 3
Note!
When the Switching back to pilot function is used, the load controller inputs OPEN
CLOSE (X5-03 pin 2 and 3) are not available (refer to chapter Switching back to pilot).
Analog input X64 is used as the load controller source in this case.
The active load controller source can be read out via parameter 942.
No. Parameter
942
Active load controller source
1 = output during curve settings
2 = manual output
3 = default output via building automation
4 = default output via analog input
5 = external load controller via contacts
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