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Building Technologies Basic Documentation LMV27... CC1P7541en
17.12.201816
7.3 Digital input .................................................................................................... 36
7.3.1 Safety loop X3–04, pin 1 and 2 ...................................................................... 36
7.3.2 Burner flange X3–03, pin 1 and 2 .................................................................. 37
7.3.3 Input for external load controller (ON / OFF) X5–03, pin 1 ............................ 37
7.3.4 Inputs X5–03 pin 2 and 3 (Opening / Closing or stage 2 / stage 3) ............... 37
7.3.5 Air pressure switch X3–02 ............................................................................. 38
7.3.6 Gas pressure switch for valve proving X9-04 ................................................ 39
7.3.7 Gas / oil pressure switch-min, start release gas X5-01 .................................. 40
7.3.8 Setting the time for making the pressure switch test ..................................... 42
7.3.9 Gas / oil pressure switch-max / oil pressure-max or POC contact, start
release oil X5–02 ........................................................................................... 43
7.3.10 Reset X8-04, pin 1 ......................................................................................... 44
7.4 Digital outputs ................................................................................................ 45
7.4.1 Output alarm type No-SI – X3–05, pin 2 ........................................................ 45
7.4.2 Fan motor contactor type SI – X3–05, pin 1 .................................................. 45
7.4.3 Continuous fan operation – X3–05, pin 3 ....................................................... 45
7.4.4 Output ignition type SI (IGNITION) – X4–02 .................................................. 46
7.4.5 Outputs fuel valves V1 / V2 / V3 / PV, type SI – X8–02, X7-01, X7-02 .......... 47
7.4.6 Output safety valve type SI – X6–03 .............................................................. 47
7.4.7 Output for indication of operation X8-04, pin 2 .............................................. 47
7.5 Program sequence ......................................................................................... 48
7.5.1 Time parameters ............................................................................................ 48
7.5.2 Valve proving ................................................................................................. 49
7.5.2.1. Valve proving with separate pressure switch X9-04 ...................................... 50
7.5.2.2. Valve proving via gas pressure switch-min X5-01 ......................................... 51
7.5.2.3. Lockout phase (phase 00) ............................................................................. 51
7.5.2.4. Safety phase (phase 01) ................................................................................ 52
7.5.3 Special functions during the program sequence ............................................ 53
7.5.3.1. Reset / manual lockout .................................................................................. 53
7.5.3.2. Alarm upon start prevention ........................................................................... 54
7.5.3.3. Possible start preventions .............................................................................. 54
7.5.3.4. Repetition counter .......................................................................................... 55
7.5.3.5. Start without prepurging (as per EN 676) ...................................................... 57
7.5.3.6. Gas shortage program ................................................................................... 58
7.5.3.7. Program stop function .................................................................................... 59
7.5.3.8. Forced intermittent operation (<24 hours) ..................................................... 59
7.5.3.9. Low-fire shutdown .......................................................................................... 59
7.5.3.10. Continuous fan ............................................................................................... 60
7.5.3.11. Test function for approval of burner – loss-of-flame test (TÜV test) .............. 61
7.5.3.12. Postpurging in the lockout position ................................................................ 62
7.6 Fuel trains (application examples) ................................................................. 63
7.7 Sequence diagrams ....................................................................................... 71
7.7.1 Gas direct ignition «G», «G mod», «G mod pneu» ........................................ 71
7.7.2 Gas pilot ignition 1 «Gp1», «Gp1 mod», «Gp1 mod pneu» ........................... 72
7.7.3 Gas pilot ignition 2 «Gp2», «Gp2 mod», «Gp2 mod pneu» ........................... 73
7.7.4 Light oil direct ignition «Lo», «Lo mod», «Lo 2 stage», « Lo 3-stage» ........... 74
7.7.5 Light oil – pilot ignition «LoGp»«LoGp mod» «LoGp 2-stage» ...................... 75
7.7.6 Legend to the sequence diagrams ................................................................. 76
8 Selection of operating mode ....................................................................... 79
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