SC Refrigeration Practice Questions - South Carolina Refrigeration Contractor Examination Exam

In cold outdoor weather, condenser-fan cycling or a flooded-condenser (head-pressure) valve is used to:

Lower condensing pressure as far as possible to maximize compression ratio Hold a minimum condensing pressure so the TXV still has enough pressure drop to feed the evaporator Prevent any subcooling from occurring Keep the crankcase heater de-energized

Correct Answer:

Hold a minimum condensing pressure so the TXV still has enough pressure drop to feed the evaporator

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