Hot water tempering valve

Hot water tempering valve

PostBy: Thechap On: Fri Jan 17, 2014 11:54 am

I have an outdoor wood stove which I am also using to heat my domestic hot water. I have taken a photo of the hot water tempering valve. This system has been in use for I would say five years. This year the hot water doesn't seem to be hot enough. The water temperature going into the oil burner is running around 160 degrees. So the temperature of the water going through the domestic hot water tank should be roughly the same?

Which way would I turn the tempering valve to decrease the amount of cold water being mixed with the hot water?
Tempering valve.jpg
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Thechap
 
Other Heating: Outdoor wood boiler
Stove/Furnace Make: Harmon
Stove/Furnace Model: Mark III

Re: Hot water tempering valve

PostBy: Sting On: Fri Jan 17, 2014 11:59 am

These devices "stick" or get buggy with some regularity.

a) take it apart -clean it and put it back together
b) have a plumber fix it
c) replace it and have a nice day - and plan to replace it in about the same life cycle

Kind regards
Sting
Sting
 
Other Heating: BurnHAM=NG-gas

Re: Hot water tempering valve

PostBy: Sting On: Fri Jan 17, 2014 12:00 pm

OH -- you may want to shut the water off first :D
Sting
 
Other Heating: BurnHAM=NG-gas


Re: Hot water tempering valve

PostBy: Wood'nCoal On: Fri Jan 17, 2014 9:25 pm

I just had the same issue with the tempering valve on the EFM. Began loosing hot water under high demand a few weeks ago, yesterday had a lukewarm shower. I was about to remove the guts but I got the hot water running at a good flow and rotated the adjustment stop to stop a bunch of times. Hot water is back now.
To answer your question: There should be a tag on the handle with arrows telling you which way to turn for warmer and for cooler.
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Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: Hot water tempering valve

PostBy: Thechap On: Sat Jan 18, 2014 11:44 am

Thanks everyone! I will check the valve this morning and get back to you.
Thechap
 
Other Heating: Outdoor wood boiler
Stove/Furnace Make: Harmon
Stove/Furnace Model: Mark III

Re: Hot water tempering valve

PostBy: Thechap On: Sat Jan 18, 2014 12:12 pm

After turning the valve the right direction I now have hot water again!
Thechap
 
Other Heating: Outdoor wood boiler
Stove/Furnace Make: Harmon
Stove/Furnace Model: Mark III


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