What is the typical manifold pressure for a liquefied petroleum (LP) gas appliance?

The typical manifold pressure for a liquefied petroleum (LP) gas appliance is indeed in the range of 10-11 inches of water column (WC). This pressure provides the optimal flow of gas necessary for the proper functioning of LP gas appliances, ensuring efficient combustion and safe operation. Maintaining this pressure is crucial for appliance performance, as it balances the gas-air mixture needed for effective ignition and heat generation.

When the manifold pressure is set correctly within this range, it helps to avoid issues such as incomplete combustion, which can lead to inefficiency and increased emissions. Having the right pressure also prevents potential problems like the appliance shutting off, backfiring, or producing harmful carbon monoxide.

Understanding and measuring manifold pressure is essential for technicians who service LP gas appliances. Accurate pressure regulation ensures that appliances operate safely and efficiently, which is paramount in preventing hazards associated with gas appliances.