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Re: Exhaust Smell from all faucets and showerheads : Tankless Water heater Rinnai RU119iN reu-n3237ff-us
We got a 'scorched' smell when hot water ran. New-To-Us on-demand heater fed from a small propane tank. Plumber pointed out that the tank was nearly out, the gas pressure musta fallen every time the big fire came on to heat water. Lean fire probably burned bad. Why it smelled 'scorched' I don't know, but topping off the propane was the cure. The smell was not just in-shower but pretty much the whole house, the un-blown heater's fumes just rose by convection and, if under-heated, had places to slip out of smokepipes and out of cellar.
Obviously if you are on city-gas, this should not happen (worn/bunged regulator?).
Obviously if you are on city-gas, this should not happen (worn/bunged regulator?).
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Re: Exhaust Smell from all faucets and showerheads : Tankless Water heater Rinnai RU119iN reu-n3237ff-us
Hi, Just to help rule things out, how about turning the heater off and then running water from the hot side? See if there is any odor. If not, you can eliminate the possibility of some other part of the hot side being at fault.
Is the odor at all hot taps? If not, it could have something to do with drainage not working right.
Have you had a look at the heater's inlet screen? Any plastic bits there? It's a long shot, but if some plastic bits were in the heat exchanger, maybe heating could create the odor??
I've dealt with a lot of hot water odor problems, but this one is new to me.
Yours, Larry
Is the odor at all hot taps? If not, it could have something to do with drainage not working right.
Have you had a look at the heater's inlet screen? Any plastic bits there? It's a long shot, but if some plastic bits were in the heat exchanger, maybe heating could create the odor??
I've dealt with a lot of hot water odor problems, but this one is new to me.
Yours, Larry
Re: Exhaust Smell from all faucets and showerheads : Tankless Water heater Rinnai RU119iN reu-n3237ff-us
My guess would be it is bacteria and minerals in the water like the sulfur smell, possibly some reaction with the metals too.
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Re: Need Help Understanding Dielectrics
Hello @JHMartin,
Either that corroded mess has been leaking for quite some time or maybe the tank has a draft issue and combustion gas spewing out. How does the other pipe look ?
Either that corroded mess has been leaking for quite some time or maybe the tank has a draft issue and combustion gas spewing out. How does the other pipe look ?
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Re: Need Help Understanding Dielectrics
I avoid using dielectric unions for the same reason Larry stated above. They tend to be prone to leaking. Most water heaters have dielectric nipples in the tank but I find that different tanks have different quality dielectric nipples. What works for me, I put a 3/4" brass coupling on the hot water nipple and a 3/4" brass tee on the cold water nipple. I connect the type L copper with male adapters. On the bull of the tee I pipe in the expansion tank with brass nipples and fittings.
If the quality of the dielectric nipples the water heater comes with is questionable then the brass will provide adequate dielectric separation.
If the quality of the dielectric nipples the water heater comes with is questionable then the brass will provide adequate dielectric separation.
Re: American Radiator Co No. 1 Ideal Redflash Boiler | Update or Replace? [Photos]
It's in great shape, I have the same unit and I am currently replacing it....my God Rinnai combination water and Boiler...95% efficient....it's probably a coal converted unit. Original furnace and not in as good of shape. But damn 100 years or so and my HVAC guy says it's the oldest he's ever seen....it's jacketed, full if asbestos so....it's been on its last, last leg for 40 years and the last guy put a fill valve in it and said better start thinking about it.
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Re: The case of the lowered steam pressure, this Friday's case.
There is some ASME rule about operating a high-pressure boiler at reduced pressure believe it or not I don't think it is allowed. Always sounded crazy to me but there is a reason for it.
Re: LG air to water heat pump
here is a snap shot of performance. Better than most I've seen.

Suppliers that help with supply detail and design of Radiant Heat
When I did my Solar I called AltE store and told them what I wanted, and they put together a quote of everything I needed, and it all worked out in the end.
Are there similar suppliers for Radian Heat?
My heating source is not common (Sanden Eco2), but from a plumbing perspective, it's just a two zone radiant system with two heat exchangers (pre-heat with drain-back solar system and exchange heat via required Taco x-block with Sanden Eco2 tank).
Are there similar suppliers for Radian Heat?
My heating source is not common (Sanden Eco2), but from a plumbing perspective, it's just a two zone radiant system with two heat exchangers (pre-heat with drain-back solar system and exchange heat via required Taco x-block with Sanden Eco2 tank).



