The gas kiln I have now is homemade down draft with 6 raku style burners, 3 on a side of a kiln that is about 45 cu ft stacking area. This works fine but I'm looking at making a smaller size kiln that is similar in design as a Geil, where the burners come in from the floor and has no bag wall.
I have looked at a burner from from summit kiln conversions that has 4 pipe style burners(50k btu/burner) that attach to a manifold but do not have primary air ports(PAPS) or butterfly air intake adjustments. This system relies on the damper to create a reduction atmosphere. I believe the gas orifice is drilled into the manifold and the primary air is drawn in around the manifold into the pipe burner.
Since I have used a different system with PAPS and damper, I'm wondering how responsive this type of burner is in giving overall reduction.
Most folks that have this system have converted an electric to gas but I was thinking of building a small downdraft with this burner setup. My main concern is controlling reduction as I start at about 1550 and adjust on the way up to cone 10.
Hope to hear from some folks that have used this type of burner setup.