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Building Technologies Basic Documentation LMV37.4... CC1P7546en
Contents 17.12.2018
13.3 2-stage operation ......................................................................................... 149
13.4 3-stage operation ......................................................................................... 149
14 Fuel meter input X75 pin 1 / X75 pin 2 ..................................................... 150
14.1 Configuration of fuel meter .......................................................................... 150
14.1.1 Types of fuel meters .................................................................................... 150
14.1.2 Configuration of pulses per volume unit ...................................................... 150
14.1.3 Reading and resetting the meter readings .................................................. 150
14.2 Fuel throughput ........................................................................................... 151
14.2.1 Configuration ............................................................................................... 151
14.2.2 Reading out the fuel throughput .................................................................. 151
15 Connection and internal diagram ............................................................ 152
16 Special feature: Burner identification ...................................................... 153
17 Connection to superposed systems ........................................................ 153
17.1 General information and building automation functions .............................. 153
17.2 Modbus ........................................................................................................ 155
18 PC software ACS410 ................................................................................. 156
19 Error history ............................................................................................... 157
19.1 Error classes ................................................................................................ 157
19.2 Makeup of error history ................................................................................ 158
20 Lifecycle function ...................................................................................... 158
21 Safety notes on use of the AZL2 .............................................................. 159
22 Operating via AZL2 .................................................................................... 160
22.1 Description of unit/display and buttons ........................................................ 160
22.2 Meaning of symbols on the display ............................................................. 161
22.3 Brightness of display ................................................................................... 161
22.4 Special functions ......................................................................................... 161
22.4.1 Manual lockout ............................................................................................ 161
22.4.2 Manual control (manual request for output) ................................................. 162
22.5 Timeout for menu operation ........................................................................ 162
22.6 Backup / restore .......................................................................................... 163
22.6.1 Backup ......................................................................................................... 164
22.6.2 Restore ........................................................................................................ 166
23 Operation of LMV37.4 via the AZL2 ......................................................... 168
23.1 Normal display ............................................................................................. 168
23.1.1 Display in standby mode ............................................................................. 168
23.1.2 Display during startup / shutdown ............................................................... 168
23.1.2.1. Display of program phases .......................................................................... 168
23.1.2.2. Display of program phase with remaining running time until end of the phase
is reached .................................................................................................... 168
23.1.2.3. List of phase displays .................................................................................. 169
23.1.3 Display of operating position ....................................................................... 170
23.1.4 Fault status messages, display of errors and info ....................................... 171
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