This Right Angle Gas/Air "Alfred" Type Mixer is my favorite gas/air mixer. Here the GAS enters the mixing tube in a direct line with the flow of air and both shoot straight down the tube toward the burner head. Aligned in this way the gas entering the air stream adds to the overall velocity of the air allowing for a greater fuel/air mix, yielding a more vigerous burn.

This method uses a pipe "T" as the hub for the mixer. The gas flow is inline with the flow of the air. The main advantage of this right angle set-up is the blower is not protruding out from the furnace wall as can happen with the straight power mixers.

• (#4) Use a standard 1-1/2" black iron pipe "T"
• (#8) Drill hole in 1-1/2" plug or reducer coupling to accommodate the gas line pipe. Insert this pipe and weld.
• (#10) Drill orifice hole in cap and screw on end of gas line. Reference Orifice Chart below for correct size drill (match with correct head size).