How should the vacuum gauge and vacuum pump be connected to a four-port manifold?
A) The vacuum gauge is connected to the evaporator coil, and the vacuum pump is connected to the discharge service valve.
B) The vacuum gauge is connected to the discharge service valve, and the vacuum pump is connected to the evaporator coil.
C) The vacuum gauge is connected to the 3/8-in center port, and the vacuum pump is connected to the 1/4-in center pump.
D) The vacuum gauge is connected to the 1/4-in center port, and the vacuum pump is connected to the 3/8-in center pump.
D
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