Garage heat, need advice Options

[Sparky]

A friend recently remodeled a small office and gave me the direct vent propane heater that had been used there. It's an Empire Gravity Direct Vent with a blower and thermostat. Can I just pick a wall and stick it in place with something like this as the cap/vent:

Simpson Dura-Vent

Or do I really need a whole chimney setup for it?

It's a 2 car garage that is decently insulated. I plan on keeping the tstat set to about 50 and bumping it up before I head out to work in the garage. The local propane company will "lease" me a 100lb. tank for free as long as I order 100lbs. of propane a year. I dont see that as an issue as I'll plumb it to the heater and my gas grill. Which brings up the next set of questions, what do I use for propane line? Can I pick it up at Lowes or HomeDepot? Trying to keep the budget down to avoid the dreaded S.S.S. (Screaming Spouse Syndrome).

Any and all advise greatly appreciated!!

My best,
Mike D.

[Mark Henry]

Is it a Simpsons (Heat&Glo) heater? Or is it Napoleon (Continental)?

The DV pipe itself is not interchangeable, but both will fit onto the heater (flange). The Napoleon (continental) is cheaper but if it's a Heat&Glo I'd stick with the correct brand of pipe for insurance purposes.
BTW that's a fairly old style vent

Here it's 3/8 copper but it is certified gas line, not just copper pipe from NAPA.

To do the heater and a B-B-Q you will need to do a ½" black pipe header with separate certified gas shut off valves for each device. This has to be fastened to a wall, with an end through the wall. Then you can use an adaptor to the 3/8" copper.
All connections are flange (or NPT with proper dope), not compression, again that's code here. Pretty sure it is code where you are too.

Also although it is direct vent it is still an open flame, in a garage it must be at least 18" above the ground level, the higher the better. This is because gas fumes sit on the floor.

Edit Empire Gravity Direct Vent, I don't know that brand.