Burner Orifice Sizing and High Altitude Modification

It will soot up due to a lack of air...the manufacturer should be able to provide you with a high altitude spud (orifice) that has a smaller opening....if not http://shop.swimmingpool.com/Browse/product/26210.html

is a good a place as any to start some research..or google...gas,orifice,6000'............etc. and see where it takes you...

Agreed, I bet you would get some smoke due to a rich mix. Perhaps the company can send you a high altitude retrofit or something, although they probably don't trust consumers to mess with their fuel delivery systems (if the company even still exists).

Just went through this with a gas range/oven!

Two options available that will work; not equal in any way.

1. Get new "spud" usually blanks (i.e. have no hole) and then check local gas company (at 6,000 ft) to find out what size they recommend. The gas company that employs old farts will be best as the techniques have changed over the years. Spuds are dead cheap but have to be drilled with pretty high precision, start too small and work your way up experimentally. The biggest problem with spuds is locating them.

But there was a table, it is basically the product of "lapse rate" as one climbs in altitude. Then translated to hole size - the goal being to keep the gas / air ratio the same independant of altitude.

2. Lower the pressure on the entire line going into the gas appliance. This is the appropriate page now search for

AGS10 - Natural gas or propane regulator

Like I say, either method will work; depends on budget, time parts available...

Good answer!

Now you would think the recommendation from the gas company comes off a chart, the chart ought to be standard for altitude, and ANY gas company ought to have the chart...

Thanks, I am pleased with the response, as a first time thread-er. I am looking at the parts list and exploded diagram, a "burner injector" and a multi-point or orifice burner, like a flat stamped plate that the injector plugs into to supply fuel to the burner. Am I correct in thinking that all the burner holes need to resize, or is it further upstream at the manifold? Probably too difficult to explain here....wish an image of the diagram could be stuck in here somehow....I will pursue with local gas companies in the area, looking for an "HOOF"(hands on old fart), but if anyone can help with more detailed solution, I will gladly accept! Thanks again!!