Exhausting hanging heater

[Dragster Racer]

I picked up an older Renzor heater cheap. It has the vent out of the back. I'm a rookie at venting these. Can I go straight out the side of the building with double wall tubing? How far up do I then have to go?

 

[wapony]

Here are some install instructions I found for various models, hope it helps..
https://www.rezspec.com/index.php?pageid=000000000014&mod_files[currpos]=000000000002

 

[Dragster Racer]

Found it. Thank you!!