Is the Coleman SPORT CAT portable propane heater approved for tent use?

I purchased a SPORT CAT but do not know whether it is just for outdoor use, for example at sporting events, etc. or whether I can use it to heat a tent as well when camping. I am very nervous about using any propane powered piece of camping equipment other than outside the tent in a very well ventilated area for... show more I purchased a SPORT CAT but do not know whether it is just for outdoor use, for example at sporting events, etc. or whether I can use it to heat a tent as well when camping. I am very nervous about using any propane powered piece of camping equipment other than outside the tent in a very well ventilated area for obvious reasons (possible flame setting things a fire and carbon monoxide build up) and I would never use any piece of equipment that has on open flame in a enclosed area for those reasons anyway. However, the SPORT CAT has a protected, meshed metal top that prevents open flame and diffuses the heat. My tent has quite a large amount of mesh screening which is covered by a rain fly, but there is also quite a large amount of space (several inches) between the rain fly and the mesh, supposedly allowing for good ventilation. Would this amount of ventilation be adequate to use the heater inside the tent for cooler nights without risking build up of carbon monoxide? Has anyone ever used one inside a tent when camping? I'm just a little nervous to try it without asking these questions first. Thanks for your help!
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