Ouch! Yes, way too tight of a radius. Always refer to the listed instructions and the Trac Pipe shown is made by Omegaflex, so that is the correct std.

Rule of thumb for most brands of 1/2" CSST is the radius of a soft Philly pretzel. We sell calibrated pretzels up here. Also, calibrated golf balls as they are referred to on the tags on ANSI Z21.24 flexible appliance connectors.

I would recommend this plumber remove the CSST fitting, install an ell to a sediment trap with a tee and the gas line coming off the snout of the tee horizontally. That creates a smooth, straight run for the gas line without bends and the trap to protect the appliance downstream. If this space is outside the thermal envelope, check with your AHJ on cold traps. Also, check the spacing on supports for this CSST. IF there was a union on that black iron of course, the simplest solution would be to rotate that ell to where the gas is going.

Looks like a damp location. What's up with the welded wire and insulation? Rat farm?

HTH

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