flo check problems

Joseph_4 · November 2020

I had a customer last yr with 3 zones via pumps and was getting ghost flow in another zone making very hot. he had no flow check so i installed 3 cast iron flow checks.. It fixed problem for rest of season. now he is having problem again.. I cant believe the flo check valve went bad.. Any advice what to look for? I can install zone valve on that zone which would be a sure fix ( or replace that flo check on that zone) but he is upset.. I would be too if i were the customer.
Thank
Joe

EdTheHeaterMan · November 2020

Three things
1. most unlikely, but the valve may have failed. There could be a piece of debris keeping the valve from closing.
2. ghost flow from the return, (or the supply if you installed the flow check on the return). this is more likely the larger the pipe diameter.
3. circulator is operating all the time. Check the relay.

Read the discussion starting on page 10 of this publication from B&G
https://documentlibrary.xylemappliedwater.com/wp-content/blogs.dir/22/files/2020/01/FH-Z100B-BG-Zoning-Made-Easy-2.pdf

Joseph_4 · November 2020

Thanks so much.. the advice u gave me for the 2 wire feeder worked like a charm
thanks
Joe

Baggypolo · November 2021

What was the advice about the two wire feeder? I have the same issue.

flo check problems

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