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Engine : Motor Plants and Auxiliary Boilers - 870/947
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When preparing to light off a cold boiler equipped with a return flow fuel oil system, the recirculating valve directs the flow of oil __________.
A) back to the suction side of the service pump
B) directly to the fuel oil heater inlet for further warm-up
C) directly to the deep tanks
D) back to the fuel oil settler for further filtration
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