Um, yeah. I'd still put 'em in their own little box with all the bits they need to function not just because of the heat they output, mainly because of what they are and run on. Little hydrocarbon-burning internal combustion motors, something not usually typically recommended for indoor usage, nor in restricted atmosphere environments - ie pressurized aircraft cabins, spacecraft, and submarines.
Even if somepeople do run IC devices indoors, the only ones I've seen are propane fueled and are running inside an indoors environment smaller than a warehouse & larger than a 7-11, in other words your typical large supermarket.
Even if somepeople do run IC devices indoors, the only ones I've seen are propane fueled and are running inside an indoors environment smaller than a warehouse & larger than a 7-11, in other words your typical large supermarket.