Draining DHW unit?

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Kungur
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Post by Kungur » Fri. Dec. 28, 2018 8:47 am

I have a circulator between my KA2 and my water heater tank, electric with the elements off. How important is it to drain this tank as if the elements were being used?
Thanks!

 
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McGiever
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Post by McGiever » Fri. Dec. 28, 2018 9:55 am

Do you mean to flush out sediment/mineral deposits?

 
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Rob R.
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Post by Rob R. » Fri. Dec. 28, 2018 10:04 am

My thoughts are that draining the tank once per year can't hurt anything. If you get a bunch of minerals out, drain it 2x per year.

I would also backflush the coil into a pail and see if you get anything out of it.


 
lzaharis
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Post by lzaharis » Fri. Dec. 28, 2018 10:51 am

Its even more important to check the coil for leaks by removing the connections and installing a 1/2 plug on one side and a reducer bushing and Shraeder valve on the other to check for a leak in the coil.

I no longer use the coil on my KAA-4-1 as it has a leak in it and I need to find a replacement coil that is a trombone coil or simply remove it and put a plain cover back in its place.

 
Kungur
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Post by Kungur » Fri. Dec. 28, 2018 11:46 am

I "flush" the coil every year with vinegar and a small circulator pump set up. Really don't see anything during this process. I will "drain off" the tank and check it. Couldn't hurt.
Thanks!

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