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| Figure 5.5 | Sequence Diagrams |
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| ff | upted) |
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| ff | mittent |
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| O |
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| Pilot | O |
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| Pilot |
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| Start |
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| (Inter |
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| Terminal | Function |
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| 1 | Control Power |
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| 3 | Pilot Valve |
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Outputs | 4 | Ignition |
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| 5 | Main Valve |
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Inputs | 7 | Interlocks |
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V | POVC |
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| TFI |
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| Flame | 35 Seconds |
| Recycle |
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| Check |
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| Pilot |
| Main |
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| Firing |
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| Trial |
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| Trial |
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| Cycle |
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| 10 Sec |
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| End |
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| ff | upte | d) |
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| ff | mittent | ) |
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| O |
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| ove |
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| Pilot |
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| Start |
| Pr |
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| (Interr |
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| (Inter | End | |||||
| Terminal | Function | Air |
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| 1 | Control Power |
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| 3 | Pilot Valve |
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Outputs | 4 | Ignition |
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5 | Main Valve |
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| 8 | Fan |
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| 6 | Air Switch |
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Inputs | 7 | Interlocks |
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| V | POVC |
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| 10 |
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| TFI |
| Flame | 35 Seconds |
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| Recycle |
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| Sec |
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| Check |
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| Permitted |
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| 5 Sec |
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| Post | ||
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| Purge |
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| Purge | |||||||||
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| Trial |
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| Cycle |
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| 15 Sec | ||||||
10 Sec
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| upted) |
| Off | mittent | ) |
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| n |
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| O |
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| ove |
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| ff |
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| Terminal | Function | Start | Air | Pr |
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| Pilot | (Interr |
| Pilot | (Inter |
| End | |
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| 1 | Control Power |
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| 3 | Pilot Valve |
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Outputs | 4 | Ignition |
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5 | Main Valve |
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| 8 | Fan |
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| 6 | Air Switch |
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Inputs | 7 | Interlocks |
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D | High Fire & POVC |
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| 3 | Low Fire Switch |
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Continuity | 10 to 12 | Low Fire Purge |
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Between | 10 to 13 | High Fire Purge |
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Modulation |
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Terminals | 10 to 11 | Automatic |
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| 10 |
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| Flame | Main |
| Firing Cycle |
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| TFI | Check | Trial |
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| Recycle |
| Purge | |
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| 5 Sec | 10 Sec |
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| 15 Sec | ||
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| High Fire |
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| Permitted |
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| Low Fire | Pilot | 20 Seconds |
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| Purge | Purge | Trial | 35 Seconds |
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Eclipse
23
