How should burner-support height be evaluated when buying a rotating clay-pot cooker?

Settle the burner-support height on three measured values: the clear gap between flame and pot base, the actual base-temperature spread with a full load, and the clearance cooks need to seat and lift claypots. Verify against the maker's drawing, then trial the largest and smallest pot diameters used on site, watching for flame drift or uneven heating. If changing pot size shifts that gap noticeably, the original selection no longer holds and the height must be re-rated; otherwise catalogue figures will diverge from real kitchen performance.