this is impossible right??? - Plumbing Zone

Plumberologist · 08-27-2010, 08:30 PM

We just found a tankless commercial water heater natural gas two years old installed in an LP system. It worked for two years???

plumbear · 08-27-2010, 08:53 PM

Are you syre it hasnt been converted?

Miguel · 08-27-2010, 09:03 PM

I actually found one of those a few years back. It was a Bosche installed by the handi-HO and their claim was, "Oh we've never had any trouble with it at all until now!"
But it was spilling CO at an alarming rate and the combustion chamber was so sooted up that my opinion was to scrap it!
What made it work, I think, was that it never experienced full flow and the 3/8" tubing supplying it with propane actually starved it enough that it could never attain full fire even if it did experience full water flow. That's my guess, anyhow.
I disconnected and capped the gas and told them that I could clean the heat exchanger, burner, etc but that it was a waste of time unless they wanted to hook it up to a nat. gas system.
Never heard back from them...

What brand did you find?

Plumberologist · 08-27-2010, 09:29 PM

Quote:

Originally Posted by Miguel

I actually found one of those a few years back. It was a Bosche installed by the handi-HO and their claim was, "Oh we've never had any trouble with it at all until now!"
But it was spilling CO at an alarming rate and the combustion chamber was so sooted up that my opinion was to scrap it!
What made it work, I think, was that it never experienced full flow and the 3/8" tubing supplying it with propane actually starved it enough that it could never attain full fire even if it did experience full water flow. That's my guess, anyhow.
I disconnected and capped the gas and told them that I could clean the heat exchanger, burner, etc but that it was a waste of time unless they wanted to hook it up to a nat. gas system.
Never heard back from them...

What brand did you find?

it was a takagi

ckoch407 · 08-27-2010, 11:39 PM

Got a call last week for a Noritz 0751M not firing. Got there and it was an LP model on a NG system that was installed in 07 and has ran ever since. There was 2 units and both were wrong. The other unit was still firing. I did a gas conversion on both of them.

PaulW · 09-01-2010, 09:51 AM

Yeah we see that quite often too in the residential market.

Paul

08-27-2010, 08:30 PM	#1
Plumberologist Member Join Date: Aug 2010 Location: Northern Virginia. We service the suburbs of Washington DC. Posts: 34 My Photos	this is impossible right??? We just found a tankless commercial water heater natural gas two years old installed in an LP system. It worked for two years???

08-27-2010, 09:03 PM	#3
Miguel Drained Professional Join Date: Aug 2009 Location: Sunset Country, Ontario Posts: 709 My Photos	I actually found one of those a few years back. It was a Bosche installed by the handi-HO and their claim was, "Oh we've never had any trouble with it at all until now!" But it was spilling CO at an alarming rate and the combustion chamber was so sooted up that my opinion was to scrap it! What made it work, I think, was that it never experienced full flow and the 3/8" tubing supplying it with propane actually starved it enough that it could never attain full fire even if it did experience full water flow. That's my guess, anyhow. I disconnected and capped the gas and told them that I could clean the heat exchanger, burner, etc but that it was a waste of time unless they wanted to hook it up to a nat. gas system. Never heard back from them... What brand did you find? __________________ *BOOM-diyada! Life is good!*

09-01-2010, 09:51 AM	#6
PaulW Member Join Date: Jul 2008 Posts: 99 My Photos	Yeah we see that quite often too in the residential market. Paul __________________ General Manager Progressive Services LLC Clermont, Florida http://www.progressiveservices.com

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08-27-2010, 08:53 PM	#2
plumbear Member Join Date: Jun 2010 Posts: 65 My Photos	Are you syre it hasnt been converted?

08-27-2010, 11:39 PM	#5
ckoch407 Senior Member Join Date: Sep 2009 Location: Florida Posts: 663 My Photos	Got a call last week for a Noritz 0751M not firing. Got there and it was an LP model on a NG system that was installed in 07 and has ran ever since. There was 2 units and both were wrong. The other unit was still firing. I did a gas conversion on both of them.