The center part of the gauge manifold is connected to which of the following?

The center part of the gauge manifold is commonly referred to as the “high side” or “low side” connection, depending on whether you're measuring pressures or performing certain tasks in HVAC systems. This connection point serves as a hub for interacting with multiple components during service procedures.

Connecting the gauge manifold to a recovery machine allows for the removal of refrigerants from a system, ensuring safe and efficient handling of refrigerants during maintenance. Through this connection, technicians can monitor pressures accurately while the recovery machine operates.

When linked to a charging cylinder, the gauge manifold facilitates the addition of refrigerant to the system. This connection allows the technician to measure the pressure of the refrigerant being added and ensures that the system is charged correctly.

Using a hand vacuum pump through the gauge manifold is crucial for evacuating air and moisture from the system before charging it with refrigerant. This process helps to prevent issues such as freezing or damage due to the presence of moisture, and the manifold's center connection allows for effective monitoring of the vacuum pressure.

Therefore, the center part of the gauge manifold is integral for connecting with the recovery machine, charging cylinder, and hand vacuum pump, confirming that all these elements work in tandem during HVAC service tasks.