Antifreeze System uses listed antifreeze solution per NFPA 13.

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Prepare for the NFPA 13R: Sprinkler Systems for Low-Rise Residences Test. Utilize flashcards, multiple choice questions, and detailed explanations to excel. Ace your exam with confidence!

Multiple Choice

Antifreeze System uses listed antifreeze solution per NFPA 13.

Explanation:
The key idea is that antifreeze systems must use an antifreeze solution that has been specifically listed for sprinkler use by NFPA 13. Using a listed solution ensures compatibility with the sprinkler materials (metals and elastomers), appropriate corrosion inhibition, and proven performance in the system’s environment. This listing also helps establish safe concentration limits so the solution won’t cause damage or impede sprinkler operation when the system activates. The other options describe important system components (indicating valve status, controlling the water supply, and drainage) but they do not address the requirement for the antifreeze solution itself.

The key idea is that antifreeze systems must use an antifreeze solution that has been specifically listed for sprinkler use by NFPA 13. Using a listed solution ensures compatibility with the sprinkler materials (metals and elastomers), appropriate corrosion inhibition, and proven performance in the system’s environment. This listing also helps establish safe concentration limits so the solution won’t cause damage or impede sprinkler operation when the system activates.

The other options describe important system components (indicating valve status, controlling the water supply, and drainage) but they do not address the requirement for the antifreeze solution itself.

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