Engine: Expired / Refrigeration AC

1. A a 25 ton air conditioning system set up as a split plant with the condensing unit on deck
2. B a 200 ton low pressure centrifugal chiller for cargo hold air conditioning
3. C a hermetically sealed water cooler with a 2 lb. refrigerant charge
4. D a self-contained walk-in freezer with a 60 lbs. refrigerant charge

Tip: press A-D to answer