Originally Posted by Blowby
Ok here is another one to put out there!Compression fittings or Flare?
The Propex has come with a compression,but everything I have been reading is that flare should be used as it is better in environments where vibration is possible.
What are peoples thoughts?
Thanks for starting your own thread - lol about hijacking the one I had going. Yeah I'm just about finished with my heater install and was planning on updating that thread with a full write up, but I don't want to do that until I have everything fully complete.
To answer your question though - I would go with flare. In my experience compression fittings tend to leak, a properly made flare connection should be really good. That said anything can leak if not properly connected. The HS 2211 has the singular compression fitting but that's the only one on my system, everything else is flare.
Re - install clearance, I found that I needed 6" clearance (from blue in/out duct) for the forced air in and out side of the unit because I was making a 90 degree bend of the heater hoses into the van. The gas line in side needs and 3" of clearance (from edge of unit) to accommodate the 90 degree gas line fitting, and for some reason I have that I need 7" of clearance (from edge of unit) for the combustion air and exhaust fuel line side of the box but I think that was to account for a 90 degree bend in those lines, I ended up mounting it such that these air and flue lines just go straight out from the unit. I went with an underbody mount, like I said I'll have that write up posted probably in about a week (I'm waiting on some final gas connections to arrive in the post)
Good luck with the install!