SEQUENCE OF OPERATION FLOW CHART
Description of this flow chart can be found in the “SEQUENCE OF OPERATION” section.
| Ignition |
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|
Switch power on | Control Board |
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to unit. | opens Gas |
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|
| Valve. |
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| Ignition Control |
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| Board shuts off |
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|
Thermostat calls | Silicon Nitride |
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|
for heat. | Ignitor after |
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|
| 3 seconds |
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|
Ignition Control | Ignition Control |
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|
Board performs | Board waits 3 more |
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|
diagnostic check on | seconds to |
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|
components | monitor Flame |
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|
| Sensor. |
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|
Ignition Control |
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|
Board sends power |
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to Exhaust Inducer |
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| Ignition Control |
| Did Main |
| |
| NO | Board shuts off Gas | |
| Burner Light? |
| Valve and allows the |
|
|
| Exhaust Inducer to |
Exhaust Inducer |
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| purge appliance for |
|
| 20 seconds. | |
engages Prover |
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| |
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| |
Switch |
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| YES |
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|
Ignition Control |
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|
Board provides | Ignition Control |
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power to Silcon | Board monitors |
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|
Nitride Ignitor | units until T’Stat |
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| is satisfied. |
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|
Silicon Nitride |
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|
Ignitor |
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|
warms up for |
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|
|
20 seconds |
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|
|
| 28 |
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|
