Roku cannot be installed on any device that doesn't already have it. You can't "side-load" anything on a Roku. And there is no such thing as "Roku TV" that can be installed. A "Roku TV" is just a TV that the manufacturer has licensed the Roku OS for its smart TV functions.
There are a few smart TVs that offer "The Roku Channel" as an app. Samsung is one brand. But that's not turning the TV into a Roku TV. It simply allows accessing the content that Roku offers via that channel.
Dan Roku Stick (3600), Ultra (4640), Ultra (4670), Ultra (4800), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.