ᴹQ. narta- v. “to kindle” (Category: to Light, Kindle)
A verb in The Etymologies of the 1930s for “kindle” derived from the root ᴹ√NARTA of the same meaning (EtyAC/NARTA). This root is probably just a causative verb formation from ᴹ√NAR¹ “flame, fire”, more literally “*make fire”. Hence I think this verb can be used in the general sense of “*ignite, inflame, set fire to”, etc.
Reference ✧ EtyAC/NARTA ✧ narta “kindle”
|ᴹ√NARTA > narta||[narta-]||✧ EtyAC/NARTA|