I lucked into a used hayward h200 NG heater from a neighbor who moved last year for super cheap ($20) though he could not guarantee that it would work - said it worked last time he used it, a few years ago.
Had a gas guy come out and give me a quote on installation, running the gas line, etc. It's a pretty long run from meter to pool, measured 105 feet though I was modestly surprised that the total cost would be only $700 as I've seen some pretty high figures on these forums.
I cleaned up the heater, which had been sitting outside, as best I could yesterday, and looking at the exchange (from the top) it didn't look too bad, a little bit of green but otherwise ok.
Is there any way I can test the heater before hooking it up? I guess a cracked exchange would be what I am looking for, correct? Do I just put the thing on its side and run some water in the intake? And then look for leaks? Will they be obvious?
Are there various ways to plumb (cost above includes plumbing)? My set up is simple right now, just pump and filter, so I assume I would want the ability to bypass the heater altogether?
As an aside, I asked about me doing the trench and he said it would knock off about maybe $250 as it does not save him much time (not economical for me given that I would need to rent a trencher), said they use a machine that sort of tunnels its way through if I understood him correctly. Anyone familiar with this equipment? Sounds great if it does not dig up your yard!
Anything else I should think about at this stage?