What aspect of gas piping must be considered to avoid combustion issues?

Pressure drop is a critical consideration in gas piping systems to avoid combustion issues. Ensuring that the gas delivery system maintains the appropriate pressure is vital for efficient combustion in gas appliances. If there is too much pressure drop in the piping system, it can lead to insufficient gas supply to the burner. This can result in incomplete combustion, producing carbon monoxide and other harmful emissions, or may cause the appliance to shut off due to low pressure.

Moreover, pressure drop can affect the overall performance of the appliance, potentially leading to system malfunctions, increased emissions, and inefficient heating. Proper sizing of gas piping, minimizing bends and fittings that may increase resistance, and maintaining adequate pressure levels across the system are essential to ensure optimal operation of gas appliances and to mitigate the risk of combustion issues.