Where provided, drains shall be _______ to the exhaust duct or listed grease duct drains, in accordance with the terms of the listing and the manufacturer's installation manual.

Where provided, drains shall be _______ to the exhaust duct or listed grease duct drains, in accordance with the terms of the listing and the manufacturer's installation manual.

• A. Continuously Welded
• B. Installed
• C. Screwed
• D. Tack welded

Answer: (A)

Connecting a drain to an exhaust or grease duct must be done with a continuous weld. This creates a single, leak-tight joint that remains durable under heat, grease exposure, and vibration, and it preserves the duct’s listed fire-resistance and performance as specified by the listing and the manufacturer's installation manual. Screwed or tack-welded connections can develop gaps, loosen over time, and may not meet listing requirements, while a vague “installed” connection doesn’t guarantee the necessary leak protection or compatibility with the listing. A continuous weld eliminates crevices for grease to accumulate and ensures the joint stays integral throughout the system’s life.

Connecting a drain to an exhaust or grease duct must be done with a continuous weld. This creates a single, leak-tight joint that remains durable under heat, grease exposure, and vibration, and it preserves the duct’s listed fire-resistance and performance as specified by the listing and the manufacturer's installation manual. Screwed or tack-welded connections can develop gaps, loosen over time, and may not meet listing requirements, while a vague “installed” connection doesn’t guarantee the necessary leak protection or compatibility with the listing. A continuous weld eliminates crevices for grease to accumulate and ensures the joint stays integral throughout the system’s life.