chemical water treatment for closed loop hot water

michael j. bonk

At Penn State New Kensington campus, I am having a problem with the chemical that were put in to the hot water boiler
system.
The boiler 1,250,000 btuh (perless cast iron).
The system copper piping, u.v. for distrubtion.
Aprox. 60gal. cap.

Problem: Chemical went wild in system!
Ph. levels at 16.8ppm
Nat. levels at 2000ppm

help needed fast to convined boss system is being harmed by these chemicals.
while we still have piping! He needs to think it his idea!

I've been wet head for 25years in privet sect. Now work for P.S.U.
cannot seem to convice him of problem and damage that will and is occuring in the system.

I would reconmened the system be total drained and flushed three times with cleansing agent added and switch chemical company to chem way.

I would like to see Ph level at 10.5 and nat at 700 - 1200ppm.

what would you guy's reconmend doing?

Thank you,
michael j. bonk

George_10

Call me we can help

Call 800-543-5975

I am sure we can give you the answers you need on the phone.

Ask for Dwight our tech director.

Ken_8

If it's a closed loop,

simply cleaning the entire system with TSP and rinsing will be an excellent start. Closed systems do not need pH's that steamers do. You get the pH up around 8 and everything will be fine - as long as there is no, or very little make up - and the initial oxygen is liberated by a crank to 180+ for an hour or more. As long as the air purger works and is located properly a pH of 8 is all you need.

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hr

It would be wise

to test the fill water, hard, high iron, off ph, and on and on will play into the equasion.

Bad fill water will throw chemicals for a loop, as will what ever was installed with those pipes. Older non water soluable flux will around for a long time if not removed with cleaners able to cut them. Same with oils from threading.

That ph number seems wild to me. Time to take action if it is true!

The finished ph will depend somewhat on what you treat the final water with. Generally hydronic conditioners will have you in the 8's for copper/ iron systems. Any aluminum or stainless in the mix? Ph levels will need to be tight and controlled better. Especially with aluminum!

Find someone with experience with testing and treatment. Sounds like the potential for an expensive mistake.

I got a call from a 2 year old school in our area, several days ago. A boiler/ chiller fan coil system with glycol in the 6ph range and steel pipe already failing! Ouch! That's gonna cost the taxpayers.

hot rod

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