A vital part of the AFG design is a stationary piece of black plastic installed inside the burner housing. This device is known as the “air guide”. The air guide’s purpose is to direct the air into the optimal point of the specially designed tablock blower wheel. This allows it to develop a greater static pressure than the Model AF style wheel, yet maintain the same quantity (cfm) of air flow.
WARNING! Do not operate the AFG burner without the air guide installed. If the air guide is removed, the burner could be seriously disabled, and the performance severely affected. Delayed ignition, puffback, and appliance soot-up could result.