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Building Technologies Basic Documentation LME7… CC1P7105en
Contents 17.04.2018
4.12 Flame supervision ......................................................................................... 31
4.12.1 Ionization probe ............................................................................................. 31
4.12.2 Flame detector QRA2 / QRA4 / QRA10 ........................................................ 33
5 Dimensions .................................................................................................... 34
6 Function ......................................................................................................... 35
6.1 Preconditions for burner startup .................................................................... 35
6.2 Undervoltage ................................................................................................. 35
6.3 Controlled intermittent operation ................................................................... 35
6.4 Control sequence in the event of fault ........................................................... 36
6.5 Resetting the burner control .......................................................................... 36
6.6 Limitation of repetitions .................................................................................. 37
6.6.1 Repetition in case of loss of flame ................................................................. 37
6.6.2 Repetition in case of no flame is established by the end of safety time
(TSA) ............................................................................................................. 37
7 Operation, indication, diagnostics .................................................................. 38
7.1 Operation ....................................................................................................... 38
7.2 Indication of operating state .......................................................................... 38
7.3 Diagnostics of cause of fault .......................................................................... 39
8 Inputs / outputs .............................................................................................. 41
9 Connection diagram AGG9 connector ........................................................... 42
9.1 LME71 ........................................................................................................... 42
9.2 LME73 ........................................................................................................... 43
10 Basic unit ....................................................................................................... 44
10.1 Description of inputs and outputs .................................................................. 44
10.2 Digital input .................................................................................................... 45
10.2.1 Safety Loop terminal X3–04 pin 1 and 2 ....................................................... 45
10.2.2 Input for external controller (ON/OFF) terminal X5–03 pin 1 ......................... 45
10.2.3 Air pressure switch terminal X3–02 ............................................................... 46
10.2.4 Input gas pressure switch-min ....................................................................... 46
11 Multistage or modulating mode with actuator ................................................ 47
11.1 Relevant parameters ..................................................................................... 47
11.1.1 Connection diagram for feedback potentiometer ASZ12.33 .......................... 47
11.1.2 Connection diagram for load controller .......................................................... 48
11.2 Actuators ....................................................................................................... 48
11.3 Function ......................................................................................................... 48
11.4 Load controller inputs .................................................................................... 49
11.4.1 3-position step input terminal X5-03 .............................................................. 49
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