Where do the reversing valve's capillary lines at both ends of the cylinder connect?

The connecting lines of the reversing valve's capillary lines at both ends of the cylinder are properly associated with the pilot solenoid chamber. This is essential as the pilot solenoid chamber is responsible for directing the flow of refrigerant in the system, allowing the reversing valve to switch between heating and cooling modes.

When the pilot solenoid is activated by a control signal, the refrigerant pressure from the capillary lines affects the position of the valve's slide, enabling the switching action required for the system's operation. This connection is crucial for ensuring the correct operation of the heat pump, facilitating efficient heat transfer during both heating and cooling cycles.

The other options do not feature the relevant function of the capillary lines in the context of the reversing valve. For example, while the outdoor coil, compressor, and metering device are all important components within the HVAC/R system, they do not directly interact with the reversing valve in the same manner as the pilot solenoid chamber does.