2 bladder expansion tanks in parallel

[BronYrAur]

Is there anything fundamentally wrong with installing 2 bladder tanks in parallel on a hot water system? I have an existing tank but will be adding a significant amount of volume to the system. Rather than putting a a single larger tank, I want to install a second smaller tank.

Is there anything wrong with this idea? I assume as long as the charge pressure is the same on both and my combined acceptance volume meets the expansion, I should be fine.

By the way, the 2 tanks would not be the same size if that's important.

Thoughts?

 

[Artisi]

Nothing wrong, however which unit will you use as the controlling unit to switch the pump/s on and off?

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)

 

[BronYrAur]

This is not for domestic hot water. It is for a closed-loop hydronic heating system.

 

[DRWeig]

I don't see a problem with it...

Best to you,

Goober Dave

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