Generac Power Systems PowerPact 6561 Installation Notes page 29

 Pipe elbows, tees, drip legs, etc. - ADD 2.5 feet (.76m) per EACH elbow, tee, etc. to the overall
calculated distance from the source to the generator. (Some local codes require you to add 5 feet.)
 Do NOT install Street Elbows, they restrict the gas flow thru the pipe.
 Remember the Perinton permit required you to add 5 feet for every elbow.
 Most towns in our area also require the gas line to be painted.
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