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FIGURE 41
15 SECOND PREPURGE
58
IS NEGATIVE PRESSURE SYSTEM CLOSED?
(BOTH ON 2 STAGE HT)
THE SYSTEM WILL ATTEMPT TO LIGHT 3 TIMES (4 TIMES 2 STG HT) WITH A 60 SECOND
INTER-PURGE BETWEEN TRIES. IF AFTER THE THIRD TIME THE BURNERS
DO NOT LIGHT, THE SYSTEM WILL LOCK OUT. THE SYSTEM
WILL ATTEMPT TO LIGHT 3 TIMES (4 TIMES 2 STG HT) EACH HOUR UNTIL THE BURNERS LIGHT
OR THE THERMOSTAT IS RESET.
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