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Building Technologies Basic documentation LMV37.4... CC1P7546en
17 Connection to superposed systems 17.12.2018
No. Parameter
141
Operating mode building automation
0 = off
1 = Modbus
2 = reserved
142
Setback time in the event of communication breakdown
Setting value:
0 = deactivated
1…7200 s
148
Predefined output in the event of communication breakdown with building
automation
Setting values:
For modulating operation, the setting range is as follows:
0…19.9 = burner off
20…100 = 20…100% burner output (20 = low-fire position)
For multistage operation, use the following settings:
0 = burner OFF
P1...P3 = stage 1...stage 3
Invalid = no output predefined by the building automation system in the event
of communication breakdown
Default setting: Invalid
The factory settings of the parameters are shown on the parameter list.
Note
For a detailed description of parameter 148, refer to chapter Default output via building
automation.
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