New York Low Pressure Boiler Certificate of Fitness (COF) Practice Test 2026 - Free COF Practice Questions and Study Guide

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What is an automatic damper?

A device that maintains water levels

A device that automatically controls airflow

An automatic damper is a device that automatically controls airflow within a heating, ventilation, and air conditioning (HVAC) system or a combustion system. Its primary function is to regulate the amount of air entering the system, which can help maintain optimal efficiency and prevent overheating or excessive pressure build-up. By adjusting the opening and closing of the damper based on various conditions, such as temperature or pressure, it ensures that the right amount of air is provided for combustion or ventilation without the need for manual intervention.

This is crucial for effective operation in systems like boilers, where proper airflow is necessary for combustion efficiency and safety. When the damper operates automatically, it contributes to the overall control of the system, enhancing performance and safety by responding to real-time environmental changes or operational demands.

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A manual valve for steam release

A gauge for measuring pressure

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