A. The damper on the inlet side of the furnace is moved to the open position for a given number of seconds and then moved to the closed position. B. The damper on the inlet side of the furnace is moved to the open position for a given number of seconds and then moved to the low fire position. C. The damper is moved to the closed position for a given number of seconds and then moved to the low fire position. D. The damper in the uptakes is moved to the wide open position for a given number of seconds and then moved to the low firing rate position. « Previous Next »
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