Red Seal Refrigeration & AC Mechanic Practice Questions - Red Seal Refrigeration And Air Conditioning Mechanic Exam

In the ASHRAE/CSA refrigerant safety classification system, what does a designation of 'A1' indicate?

Higher toxicity, no flame propagation Lower toxicity, no flame propagation Lower toxicity, higher flammability Higher toxicity, higher flammability

Correct Answer:

Lower toxicity, no flame propagation

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