After installing the lines and coil on a split-system heat pump, what steps must be taken before opening the unit installation valves?
A) Perform a leak test on the lines and coil and evacuate them.
B) The system components come pre-evacuated, so the valves may be opened immediately after installing the lines and coils.
C) Charge the lines and coil with refrigerant.
D) Charge the lines and coil with refrigerant and perform a leak test.
A
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Fill in the blank(s) with the appropriate word(s).
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