Register

HVAC Star Practice Exam

Access More Questions
When charging a refrigerant system, which port on the gauge manifold is typically used to connect the refrigerant cylinder?
Correct Answer:
Center port of gauge manifold
Explanation:
Charging is done through the center service port. This port is designed to accept the refrigerant cylinder via the charging hose and provides controlled access through its Schrader-type valve, allowing refrigerant to flow into the system when you open the cylinder valve. The low- and high-pressure ports are used to monitor pressures on the respective sides of the system, not for introducing refrigerant. The vapor port isn’t the standard connection for charging. Using the center port keeps the flow controlled and safe, and aligns with how manifold gauges are designed to be used.

Access more questions from this quiz

Continue to HVAC Star Practice Exam for more practice questions and the full quiz experience.

Access More Questions