Honeywell krom schroder BCU 440 - Table of Contents; Contents

BCU 440 · Edition 01.17 2
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= To be continued
Contents
Burner control unit BCU 440 ........................1
Contents ............................................2
1 Application ........................................4
1.1 Examples of application ...........................6
1.1.1 Atmospheric burners ..................................6
1.1.2 BCU 440: Modulating-controlled burner .............7
2 Certification .......................................8
3 Function ...........................................9
3.1 Connection diagram ...............................9
3.1.1 Zonal series wiring...................................10
3.2 Program sequence................................11
3.3 Program status and fault messages..............12
4 Parameters .......................................13
4.1 Scanning the parameters.........................13
4.2 Flame control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.2.1 Burner flame signal.................................. 14
4.2.2 Switch-off threshold of the flame amplifier......... 14
4.3 Behaviour during start-up ........................14
4.3.1 Safety time on start-up t
SA
.........................14
4.4 Behaviour during operation.......................15
4.4.1 Safety time during operation t
SB
....................15
4.4.2 Fault lock-out or restart .............................15
4.4.3 Program status when the most recent fault
occurred . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5 Selection .........................................18
5.1 Selection table ....................................18
5.1.1 Type code ............................................18
6 Project planning information .................... 19
6.1 Cable selection ...................................19
6.1.1 Ionization cable......................................19
6.1.2 Ignition cable ........................................19
6.2 Spark electrode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
6.2.1 Electrode gap .......................................19
6.2.2 Star electrodes ......................................19
6.3 Calculating the safety time t
SA
.................. 20
6.4 Safety interlocks (Limits) .........................21
6.5 Protection of safety-relevant outputs ............21
6.6 Reset ..............................................22
6.6.1 Parallel reset.........................................22
6.6.2 Permanent remote reset ............................22
6.6.3 Automatic remote reset (PLC) ......................22
6.6.4 Burner start..........................................22
6.6.5 Restart and start-up attempts ......................22
6.7 Emergency stop ..................................23
6.7.1 In the event of fire or electric shock .................23
6.7.2 Triggered by the safety interlock (limits) ............23
6.8 Fault signalling ...................................23
6.9 Overload protection ..............................23
6.10 Installation ......................................23
6.11 Wiring............................................24
6.12 BCU switched off................................24
6.13 Furnace control .................................24
6.14 Mains switch ....................................24
6.15 Note on EC type-examination...................24
6.16 Changing parameters ...........................25
7 Flame control .....................................26
8 Accessories.......................................27
8.1 High-voltage cable ...............................27
8.2 “Changed parameters” stickers...................27
8.3 Radio interference suppressed electrode plugs..27
8.4 BCSoft ............................................27
8.4.1 Opto-adapter PCO 200 ..............................27
8.4.2 Bluetooth adapter PCO 300 .........................27
8.5 External securing bar .............................28
8.6 Fastening set .....................................28