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Building Technologies Basic Documentation LMV27... CC1P7541en
17.12.201816
12 Load output X74 pin 3 ............................................................................... 107
12.1 Safe separation of mains voltage and extra low-voltage ............................ 107
12.2 Modulating operation ................................................................................... 108
12.3 2-stage operation ......................................................................................... 108
12.4 3-stage operation ......................................................................................... 108
13 Fuel meter input X75 pin 1 / X75 pin 2 ..................................................... 109
13.1 Configuration of fuel meter ........................................................................... 109
13.1.1 Types of fuel meters .................................................................................... 109
13.1.2 Configuration of pulses per volume unit ....................................................... 109
13.1.3 Reading and resetting the meter readings ................................................... 109
13.2 Fuel throughput ............................................................................................ 110
13.2.1 Configuration ................................................................................................ 110
13.2.2 Reading out the fuel throughput ................................................................... 110
14 Connection and internal diagram ............................................................. 111
15 Special feature: Burner identification ...................................................... 112
16 Connection to superposed systems ........................................................ 112
16.1 General information and building automation functions ............................... 112
16.2 Modbus ........................................................................................................ 113
17 PC software ACS410 .................................................................................. 114
18 Error history ............................................................................................... 115
18.1 Error classes ................................................................................................ 115
18.2 Makeup of error history ................................................................................ 116
19 Lifecycle function ...................................................................................... 117
20 Safety notes on use of the AZL2 .............................................................. 117
21 Operating via AZL2 unit ............................................................................ 118
21.1 Description of unit / display and buttons ...................................................... 118
21.2 Meaning of symbols on the display .............................................................. 119
21.3 Brightness of display .................................................................................... 119
21.4 Special functions .......................................................................................... 120
21.4.1 Manual lockout ............................................................................................. 120
21.4.2 Manual control (manual request for output) ................................................. 121
21.5 Timeout for menu operation ......................................................................... 122
21.6 Backup / restore ........................................................................................... 122
21.6.1 Backup ......................................................................................................... 123
21.6.2 Restore ........................................................................................................ 125
22 Operation of LMV27 via the AZL2 ............................................................. 127
22.1 Normal display ............................................................................................. 127
22.1.1 Display in standby mode .............................................................................. 127
22.1.2 Display during startup / shutdown ................................................................ 127
22.1.2.1. Display of program phases .......................................................................... 127
22.1.2.2. Display of program phase with remaining running time until end of the
phase is reached .......................................................................................... 127
22.1.2.3. List of phase displays ................................................................................... 128
22.1.3 Display of operating position ........................................................................ 129
22.1.4 Fault status message, display of errors and info ......................................... 130
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