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Why is it important to adhere to the specified manifold pressures when installing gas appliances?

  1. To reduce the amount of gas used

  2. To ensure safety and efficiency

  3. To allow for higher pressure ratings

  4. To comply with aesthetic requirements

The correct answer is: To ensure safety and efficiency

Adhering to the specified manifold pressures when installing gas appliances is crucial for ensuring safety and efficiency. The manifold pressure is the pressure that gas appliances require to operate correctly and safely. If the pressure is too high or too low, it can lead to improper combustion, which not only reduces the efficiency of the appliance but can also pose significant safety hazards, including gas leaks or the production of carbon monoxide. When the manifold pressure is set correctly, it optimizes the appliance’s performance, allowing it to operate at its designed efficiency and reducing the risk of combustion-related issues. This careful calibration helps to provide a consistent flame and reduces the chances of appliance malfunction, which can endanger the occupants and property. Ultimately, maintaining the specified manifold pressures encompasses both safety and performance aspects, making it an essential part of gas appliance installation and operation.