This is a Spanish translation of Guideline 1.2, Technical Requirements for the Commissioning Process for Existing HVAC&R Systems and Assemblies.ASHRAE Guideline 1.2 provides requirements for the application of the Commissioning (Cx) Process described in ASHRAE Guideline 0.2 to existing heating, ventilating, air-conditioning, and refrigerating (HVAC&R) systems and assemblies.