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Building Technologies Basic Documentation LMV37.4... CC1P7546en
17.12.201816
7.2.2 Extraneous light ............................................................................................. 36
7.2.3 No flame at the end of safety time ................................................................. 36
7.2.4 Flame intensity ............................................................................................... 36
7.2.5 Supervision of flame detector ........................................................................ 36
7.2.6 Flame detection sensitivity ............................................................................. 37
7.3 Digital inputs .................................................................................................. 38
7.3.1 Safety loop X3–04 pin 1 and 2 ....................................................................... 38
7.3.2 Burner flange X3–03, pin 1 and 2 .................................................................. 39
7.3.3 Input for external load controller (ON / OFF) X5–03, pin 1 ............................ 39
7.3.4 Inputs X5-03 pin 2 and 3 (Open / Close or stage 2 / stage 3) ........................ 39
7.3.5 Air pressure switch X3-02 .............................................................................. 40
7.3.6 Gas pressure switch valve proving – or heavy oil direct start X9-04 ............. 41
7.3.7 Gas / oil pressure switch-min, start release gas X5–01 ................................. 43
7.3.8 Setting the time for making the pressure switch test ..................................... 45
7.3.9 Gas / oil pressure switch-max / or POC contact, start release oil / additional
speed-dependent air pressure switch X5-02 ................................................. 46
7.3.10 Reset X8-04, pin 1 ......................................................................................... 49
7.4 Digital outputs ................................................................................................ 50
7.4.1 Output alarm type No-SI – X3–05, pin 2 ........................................................ 50
7.4.2 Fan motor contactor type SI – X3–05, pin 1 .................................................. 50
7.4.3 Fan continuous purging X3–05, pin 3 ............................................................ 50
7.4.4 Output ignition type SI (IGNITION) X4-02 ...................................................... 51
7.4.5 Outputs fuel valves type SI V1 / V2 / V3 / PV) X8-02, X7-01, X7-02 ............. 52
7.4.6 Output safety valve type SI X6–03 ................................................................. 52
7.4.7 Output for indication of operation X8-04, pin 2 .............................................. 52
7.5 Program sequence ......................................................................................... 53
7.5.1 Time parameters ............................................................................................ 53
7.5.2 Valve proving ................................................................................................. 54
7.5.3 Valve proving with separate pressure switch X9-04 ...................................... 55
7.5.3.1. Valve proving via gas pressure switch-min X5-01 ......................................... 56
7.5.3.2. Lockout phase (phase 00) ............................................................................. 56
7.5.3.3. Safety phase (phase 01) ................................................................................ 57
7.5.4 Special functions during the program sequence ............................................ 58
7.5.4.1. Reset / manual lockout .................................................................................. 58
7.5.4.2. Alarm upon start prevention ........................................................................... 59
7.5.4.3. Possible start preventions .............................................................................. 60
7.5.4.4. Repetition counter .......................................................................................... 60
7.5.4.5. Start without prepurging (as per EN 676) ...................................................... 63
7.5.4.6. Gas shortage program ................................................................................... 64
7.5.4.7. Program stop function .................................................................................... 65
7.5.4.8. Forced intermittent operation (<24 hours) ..................................................... 65
7.5.4.9. Low-fire shutdown .......................................................................................... 65
7.5.4.10. Continuous fan ............................................................................................... 66
7.5.4.11. Test function for approval of burner – loss-of-flame test (TÜV test) .............. 67
7.5.4.12. Postpurging in the lockout position ................................................................ 68
7.5.4.13. Switching back to pilot ................................................................................... 69
7.6 Fuel trains (application examples) ................................................................. 71
7.7 Sequence diagrams ....................................................................................... 80
7.7.1 Gas direct ignition «G», «G mod», «G mod pneu» ........................................ 81
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