A friend of mine recently installed a 100k Slantfin Lynx modulating propane boiler. Had the propane gas company come out to connect the gas and do final checks and startup. He saw that the panel was reporting ODT "open" and I explained outdoor reset based on what I have learned here on DIY (always learn something).
I looked at the manual and it specifies a 12k ohm ODT sensor but I have been unable to find it online. Anyone here know where to find one? I suggested he call PEX Supply where he got the boiler so I think he will also try that.
BTW, what a nice piece of gear that boiler. Nice neat installation and small footprint and darn near silent operation. Quite the contrast to the rusting hulk of the ancient oil boiler lying next to it (old farmhouse dirt basement). Makes me wish I had hydronic heat instead of forced air although it would be a steep learning curve to be able to diagnose and work on that beast.