When the relief valve opens on a refrigeration compressor discharge line, it discharges high pressure refrigerant vapor to what location?

Correct Answer: Option A — suction side of the compressor

Refrigeration safety relief valves on reciprocating compressors frequently discharge to the compressor suction side (or bypass internally) during minor lifts to prevent losing the entire refrigerant charge into the machinery space while mitigating high-side overpressure.