Details test and examination criteria for gas-fired, heat activated air-conditioning and heat pump appliances which make use of the thermal output of fuel gas combustion of natural, manufactured and mixed gases, liquefied petroleum gases, and LP gas-air mixtures for providing their heating, cooling, or dehumidifying effect. These appliances supply conditioned air, heated and/or cooled liquid, or refrigerants, gases, solids, or liquids to spaces remote from or adjacent to the appliance.