Temper valve?

Any quick ways to check one or any way to fix one? Temp gauge's shows it not letting any hot water past it.

jebatty said:

Take it apart and find out! Let us know what you find. Talked to someone else today who had a Termovar that wasn't opening. Waiting to hear from that person too. This will be the 5th season on mine.

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Mine is a honeywell 3/4 inch. I have another one on hand but its a 1/2. I draing the system now should have it off soon.

EricV said:

My Termovar seems weak and flows when it's too cold so I asked Tarm if they sold replacements, waiting for the reply.

If I replace it I am thinking of going to a 160 (or 161, what ever the next higher one is) any thoughts vs the 140 degree?

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I am running a dhw loop only lines are rated I think 190 max I like to dump into the 2nd tank at 160. Never had water coming out to hot. I have another tempering valve for the electric hot water tank just dont think I need it. (I let the system drain over night) Will be back on it Thursday. Indian Summer here!

Oh I have about a 100 foot between the two tanks and lose about 6 degrees.

Ok after soaking in iron out and Pb blaster for the last 36 hours I re-installed. It is working as it should. Awesome that's 100.00 I don't have to spend.!

PassionForFire&Water; said:

smokinjay said:

Ok after soaking in iron out and Pb blaster for the last 36 hours I re-installed. It is working as it should. Awesome that's 100.00 I don't have to spend.!

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Can you please give some more details on "soaking in iron out and Pb blaster for the last 36 hours "
Is this a liquid solution ?
Thanks

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Iron out is what you use in water softener. I started with a bath of it. In a small pan I covered the mixing valve with water added a cup of iron out and soak for 24hrs. Then used a old zip lock bowl with lid and pb blaster and soak in it for another 24 hrs. Wiped it off and re-installed. All is working as it should. Fired a couple hrs ago and all seems normal again with 4 different temp gages saying its good to go!

in hot water said:

The hotter you run them the more they tend to "lime" up. Install all three way mixers with isolation valve at all 3 ports for ease of service, at least on DHW or open systems.

hr

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Help not sure what you mean? Its is dhw

jebatty said:

My comment relates only to temper valves (Termovar - type) used for boiler return water protection or in the boiler/system, not DHW. It is important to know something about your fill water, pH, hardness, etc. My water is from a well that is about 3 grains of hardness, pH 7. I also added treatment to my boiler water. Now in the 5th season and the Termovar works as well today as on day 1, as best as I can tell.

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Mine is in line with the water softner and pretty easy to take out. Was hoping there was even a quicker way to service it. (Ihave a well to heavy iron)

Cave2k said:

smokinjay said:

Any quick ways to check one or any way to fix one? Temp gauge's shows it not letting any hot water past it.

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Have you cycled it in both directions several times? May just be lime build-up.

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Yea it was acting up last spring pretty bad. I figured I would pull it out and clean it good. Could be Iron or lime maybe both...