A CR-21 licensee may install residential misting systems under what PSI?

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Multiple Choice

A CR-21 licensee may install residential misting systems under what PSI?

Explanation:
The key idea is that misting systems rely on atomizing water into very fine droplets to cool the air, which only happens effectively at high pressure. To achieve that fine mist, residential misting typically operates around 1000 psi. Pressures much lower than that (like 90–120 psi or even 500 psi) produce larger droplets, wetting rather than misting and offering poor cooling. So a CR-21 licensee would install residential misting systems up to, and typically designed for, 1000 psi to ensure proper atomization and performance.

The key idea is that misting systems rely on atomizing water into very fine droplets to cool the air, which only happens effectively at high pressure. To achieve that fine mist, residential misting typically operates around 1000 psi. Pressures much lower than that (like 90–120 psi or even 500 psi) produce larger droplets, wetting rather than misting and offering poor cooling. So a CR-21 licensee would install residential misting systems up to, and typically designed for, 1000 psi to ensure proper atomization and performance.

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