rotten egg smell from radiant floor heating system

Dave Larsen_11

As usual. I'd bet Hot Rod hit it right on the head. Pull out that anode rode and use fresh water.

Jim Hall

rotten egg smell

we have a radiant floor heating system with 80 gallon water heater and a recirc pump. It is a closed system and drained off a little water from system to lower operating pressure and got horrible egg smell What is cause? Is this normal? What can we do about this if anything?

Derheatmeister

Yes, use Airfreshers, Just Kidding, Is the system heated by a Boiler or waterheater? . I did not understand the post!..... Sometimes if you use well water you can get some Minerals that when heated do all kind of things,What i use in my systems is a system cleaner and then a system treatment(Rhomar) Start with checking the PH maybe tap some fluid.Are you a" heating guy" or HO.?

hot_rod

what type of tube?

Is it rubber hose by chance? Or if it is pex, is it a barrier type pex.

Also the anode rods in water heaters can sometimes cause that odor.

hr

[Deleted User]

yep der,

i was about to ask the same/a similar question; smell from the drain off? 'sulfer' well? if so, there are some formulas out there, u of pa paper?, that tells ya in detail how to shock a well with clorox in order to get rid of those easter fart smells

Jim Hall

rotten egg smell

should you take anode rod out of a closed radiant floor heating system? we are on a well but never get that smell from our domestic water system. System has been shut off for about 6 months. Not normally a problem and I don't really care what it smells like as long as it isn't hurting anything. I bled off a little pressure and noticed the foul smell.

hot_rod

smelly info

www.waterheaterrescue.com/pages/WHRpages/English/Troubleshooting/Tanklets/water-heater-odor.html

I doubt the smell is going to cause a problem.

Is the heater connected to the potable water with a fill valve? Be sure you have an approved backflow device to prevent that water from entering your water system.

hr

[Deleted User]

yep hr,

that was my other head scratch; heater/potable connection with no bflow p

Jim Hall

yes there is a double backflow prevention valve since there is a bit of food grade antifreeze in system as well

Derheatmeister

Well??

[Deleted User]

ok, double backflow

is it an indirect wh and boiler, or a heat exchanger/
boiler system?

hot_rod

an 80 gallon WH

as the dedicated radiant source as I read it?

hr

Derheatmeister

How about some pictures of the System. I think i am not the only one that does not get you post ! there is just not enough information to figure it out, and again is the water from a well or from city water?. Was the system cleaned from the manufactures oil?. Is the system heated by a boiler? OR by a water heater.? Do you have Rubber hose as infloor tube. Oxygen barrier? Or none Oxygen Barrier. Too many things , No Feedback! I guess you maybe do not know the Answer to some of this but PIX go a long way!