Sam's Club
Is this a spool gun or an integrated feed?
It appears to be pretty thin steel sheet that’s stamped. I kept it pretty hot while I was working it to try to keep things together.
40475 Richmond Ky.
Not a spool gun. It is a Lincoln SP-125 Plus, and the spool is inside the box. I'll have to go look to see if the sheath is isolated or supposed to be...
I've got this one. It had the most checkers.
It's possible that the inner most end of the wire is rubbing on the hub. I've had it happen. It trained me to snip off any extraneous bits of wire protruding into the center of the reel.
Blockage in the intake or exhaust? **** in the gas line? I've seen spiderwebs do in boilers.Back to the battle of the Rinnais.
I replaced the primary heat exchangers and burners--what, two weeks ago?--and now I can't heat water above 170 on one of them and 155 on the other. The one that has the lower limit gives me a 10 code, which is burner obstruction--vent flue, etc. So today I tore the coaxial vent/intake lines off both of them and deep-cleaned them.
That took care of the morning. When I got back from lunch, same problem.
It's gotta be the new burner, right? The old burners still work fine, but the ceramic flame plates are falling apart. I replaced the burners because you can't just buy new flame plates, but have to buy the whole thing.
Easy peasy--just gotta do some more thoracic surgery.
All that's gotta come out--again. The burner is the top of the stack so I don't need to take the whole thing apart, but the work cannot be done with that stuff installed.
Now, to the eye, both the new and old look identical, but there has to be a difference, so off come the burner plates of the old burner
and in with the new:
I got it all in by three PM and...
same damned problem. I have no idea what to do at this point. Both heaters would go all the way to 185 without problem before the latest rebuild, which I've done several times now. The units don't connect to the internet, so no surprise "updates". All the sensors are the same as before. I'm stumped.
Beer thirty.
That seems like a bit too far away to drive to buy a lawnmower that will be abused on a rocky property. But it sure looks nice and light.
It happens. Not a bad thing to pack it in and reboot in the morning.
Is it possible you just boogered up the tip so bad the wire couldn’t feed, and the feed wheel just ate through the wire Like a grinding wheel?
As reported above, I disassembled and deep cleaned every inch of the intake/exhaust coax tube, lubed the gaskets and made sure everything was tight when reassembled.
Is it possible that your equipment is getting a bit past its "use by" date?
Oops, missed that bit. I hate coaxial. Is it possible you've got an internal exhaust leak?
I know I’m probably asking a stupid question, because you know engines, but that’s not an interference engine is it? Hate to see you buy a bunch of parts if there’s bent valves and a hole in a piston.
Thanks!
I know it’s a stretch, but on the thread of gas supply - perhaps you could swap the gas valves from one unit to the other and see if the problem moves. I know, I know, gas valves never go bad, but I had one boiler that would seemingly eat gas valves. I could come up with no reasonable explanation. That line had a substantial drip leg and was piped with new pipe and fittings. No water, no rust. More likely that supplier of gas valves produced a few lots where the clearances were too tight and they got fouled easily. Not at all certain that could be your issue, but it seems that you have chased down the issue pretty well. Can you get a gas pressure reading from a service port? Maybe a bum regulator?
I've replaced everything but the carcass--several times. It's essentially new right now.
One of the reasons I took the entire flue system apart today. I've also opened the intakes that use room air. No difference.
I'm entirely open to any ideas for other ways to heat a 1,200 gallon tank with propane. Altering the tank itself is not a good option--nor is direct steam injection. That would just make the boiler the problem.
Sometimes an old tip is more susceptible to burn back. It can cause the wire to temporarily stick to the tip. Once that happens the feed spool can grind into the wire, more likely to happen with flux core.
That looks like a 3.3. IIRC those were non-interference.
If you search for "Rinnai Water heater diagnostic trees" you'll get a lot of factory PDFs. Maybe some of those?
