Ammonia refrigerant ASHRAE classification is which?

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Prepare for the New York City Refrigeration License Exam I. Utilize flashcards, multiple-choice questions, and detailed explanations to boost your readiness. Ace your licensing exam!

Multiple Choice

Ammonia refrigerant ASHRAE classification is which?

Explanation:
Refrigerant classifications use two factors: toxicity and flammability. The letter (A or B) indicates toxicity, with A meaning lower toxicity and B meaning higher toxicity. The number (1 or 2) indicates flammability, with 1 meaning lower flammability (essentially nonflammable) and 2 meaning higher flammability. Ammonia has high toxicity to humans and is flammable in air, so it is classified as B2. This differs from low-toxicity, nonflammable refrigerants (A1), higher-toxicity but nonflammable (B1), or low-toxicity but flammable (A2).

Refrigerant classifications use two factors: toxicity and flammability. The letter (A or B) indicates toxicity, with A meaning lower toxicity and B meaning higher toxicity. The number (1 or 2) indicates flammability, with 1 meaning lower flammability (essentially nonflammable) and 2 meaning higher flammability. Ammonia has high toxicity to humans and is flammable in air, so it is classified as B2. This differs from low-toxicity, nonflammable refrigerants (A1), higher-toxicity but nonflammable (B1), or low-toxicity but flammable (A2).

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