Timeline for How to chlorinate a tankless water heater?
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| Jun 16, 2020 at 10:07 | history | edited | CommunityBot |
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| Nov 29, 2017 at 14:12 | comment | added | Ed Beal | Most of the problems I have seen are in the pressure tank where the growth is causing the smell if not sulfer, bleaching the well and a complete flush out after several hours is the best method , there is really no stagnant water in a tankless heater, the well and or pressure tank would be better locations. Note some times if there is air in contact with the water in the pressure tank this can be the cause ruptured bladders and diaphrams are a common cause. | |
| Nov 29, 2017 at 2:39 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Oct 30, 2017 at 16:46 | comment | added | ferret | @Alaskaman that info isn't pertinent. I'm asking how to flush something through a pipe on a tankless system. I'm not asking why my water stinks, that question has been answered dozens of times, I was merely providing that as background info. | |
| Oct 30, 2017 at 0:41 | comment | added | Alaska Man | @andrewtweber you did not supply any of that information in your question. Nor have you edited your question to include any of that pertinent information. " as far as I know" is vague at best and does not tell us that you performed any tests. Had you included any of that information in the question it would have been worthy of an up vote. Now how about you edit the question with all of the pertinent information so it is a good one | |
| Oct 29, 2017 at 16:42 | comment | added | blacksmith37 | You are correct , the problem is sulfate reducing bacteria. But they are primarily in the well and in the aquifer . The answer is correct , you need to get the bleach down the well and let it sit. The reason the smell appears to go away when you run the water is that the H2S concentration goes from very low ( you can smell it ) to very, very low ( you can't smell it) .The H2S content increases as water sits in /near the well bore. | |
| Oct 29, 2017 at 15:09 | answer | added | Ecnerwal | timeline score: 1 | |
| Oct 29, 2017 at 14:32 | comment | added | ferret | @JimStewart yes I do have those valves. Thank you, I'll try that. I forgot that flushing it to descale was necessary so doing the same thing with hydrogen peroxide should work the same way. Even if it's not necessary, it won't do any harm | |
| Oct 29, 2017 at 14:32 | comment | added | ferret | @Alaskaman I did have my water tested. I do have a functioning water treatment system. "I would guess that it is the water itself that smells"- what was that you said about lack of concrete evidence? "Sulfur smells like rotten eggs"- no it doesn't. Hydrogen sulfide smells like rotten eggs. In my case, hydrogen sulfide released by sulfate-reducing bacteria, as confirmed by two local plumbers. Now how about an upvote for a good question? | |
| Oct 29, 2017 at 14:26 | history | edited | ferret | CC BY-SA 3.0 |
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| Oct 29, 2017 at 14:04 | comment | added | Jim Stewart | If you have these special valves, you could use them to flush your hot water distribution lines with peroxide. You would do this by setting the cold water valve on the tankless heater in the flush configuration and leaving the hot water valve in the normal operating position. Then you would pump or draw the peroxide into the system there and it would go through the heater and into the hot water distribution system. You could pump it or use a shop vac to pull it through each faucet. You could use the vac to get a siphon started which could be used to fill the entire hot water distribution sys. | |
| Oct 29, 2017 at 13:04 | comment | added | Jim Stewart | These are the type of valve recommended for a tankless WH: homedepot.com/p/… Do you have valves like this? | |
| Oct 29, 2017 at 12:44 | comment | added | Jim Stewart | Tankless water heaters are "supposed" to be installed with special isolation valves which allow disconnection of the heater both from the incoming cold supply and the outgoing hot. (The standard installation of a tank only has one cut-off in the incoming cold, but some might have two cut-off valves.) But in addition the widely used valves for tankless have a second set of valves (incorporated in the same valve bodies) which open up the heater for flushing and descaling. You could use the descaling settings to flush with hydrogen peroxide, but I question whether this is necessary. | |
| Oct 29, 2017 at 9:48 | comment | added | Alaska Man | "As far as i know" does not sound like concrete evidence. Have your water tested, test a sample direct from the well and one from a fixture within the house. i would guess that it is the water itself that smells and it smells that way from the well before it enters your home. Sulfur in well water is common. Sulfur smells like rotten eggs. perhaps a water treatment system is what is needed. | |
| Oct 29, 2017 at 6:00 | history | asked | ferret | CC BY-SA 3.0 |