When the capillary tube serves the function of both the liquid line and the metering device, it is connected between the evaporator and the:

When a capillary tube functions both as a liquid line and a metering device, it plays a crucial role in managing refrigerant flow within the HVAC system. Specifically, it is connected between the evaporator and the condenser.

In this configuration, the capillary tube allows liquid refrigerant to flow from the condenser to the evaporator, where the refrigerant evaporates and absorbs heat from the indoor environment. The capillary tube also regulates the amount of refrigerant that enters the evaporator, helping maintain the desired pressure and flow rate essential for the system's efficiency.

This setup is common in certain air conditioning systems, particularly small, self-contained units where the simplicity of having a single component perform both functions is advantageous. The direct connection to the condenser ensures that the refrigerant is in its liquid form when it exits, enabling effective heat absorption in the evaporator.

In contrast, the other options do not represent the correct connection point for a capillary tube functioning in this dual role. The suction line carries vapor from the evaporator back to the compressor, and the compressor itself is not an appropriate location for the capillary tube as this component is primarily responsible for compressing the vapor before it enters the condenser. A modulator is not a standard