Question about portable steam generators for the shower?

I have a contractor that installed a Mr. Steam's MS225 portable steam unit in a new bathroom. Something about the configuration of the heads just doesn't seem correct to me. The contractor installed six heads in the shower, two at thigh level, two at waist/chest level, and the last two at face level. Since steam is rather hot, aren't those heads close enough to the body (less than sixteen inches) that the steam could burn someone in the shower? I need as much information as you can provide. Thanks in advance!