Flammability rating categories A1, A2, and A3 denote a refrigerant's what?

Flammability rating categories A1, A2, and A3 denote a refrigerant's what?

• A. Toxicity
• B. Operating pressure
• C. Flammability
• D. Boiling point

Answer: (C)

Flammability rating categories A1, A2, and A3 indicate how easily a refrigerant can ignite under typical conditions. These classifications come from safety standards and tell you the flame potential: A1 means nonflammable, A2 means mildly flammable, and A3 means highly flammable. This is about flammability, not toxicity, boiling point, or operating pressure, which are separate properties. Knowing the flammability category helps determine the safety controls, such as ventilation, leak detection, and handling requirements needed for that refrigerant.

Flammability rating categories A1, A2, and A3 indicate how easily a refrigerant can ignite under typical conditions. These classifications come from safety standards and tell you the flame potential: A1 means nonflammable, A2 means mildly flammable, and A3 means highly flammable. This is about flammability, not toxicity, boiling point, or operating pressure, which are separate properties. Knowing the flammability category helps determine the safety controls, such as ventilation, leak detection, and handling requirements needed for that refrigerant.