Which risk increases when installing mixed hydrocarbon refrigerants in a system designed for CFC-12?

💡 Explanation

When hydrocarbon refrigerants replace CFC-12, the increased flammability of hydrocarbons creates an explosion risk because they are more readily ignited by electrical sparks or hot surfaces within the existing (legacy) equipment. Therefore, the risk of fire/explosion is elevated, rather than thermal runaway or ozone damage which relies on different reactions/molecules.

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