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  #1  
Old 9/14/18, 8:34 PM
Joshua LeBeau's Avatar
Joshua LeBeau Joshua LeBeau is online now
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Default Expansion tank requirements?

Are there any requirements on installing an expansion tank? Like distance between fittings or between anything?
I had a know-it-all father-in-law saying this and saying that about everything but he was adamant that the expansion tank had to be 18" from the 90 degree. I let him go on but I wanted to check anyway.
These pictures show the expansion tank, clearly not 18".

Thanks for the help.
Josh
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  #2  
Old 9/14/18, 9:44 PM
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Marcel Gratton, CMI Marcel Gratton, CMI is offline
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Default Re: Expansion tank requirements?

Below's comment copied from: https://www.flexconind.com/pdf/wh-whv_install.pdf

*Installation
1. This tank must be installed according to your local plumbing code. It should be
at least 18” from the cold water inlet to the water heater...*



Marcel Gratton, NACHI04011210, CMI
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  #3  
Old 9/14/18, 9:50 PM
Joshua LeBeau's Avatar
Joshua LeBeau Joshua LeBeau is online now
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Default Re: Expansion tank requirements?

Thanks Marcel, Good information.
The expansion tank is on the output line of the furnace.
Does that make a difference?




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  #4  
Old 9/14/18, 10:29 PM
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Stephen W. Stanczyk Stephen W. Stanczyk is online now
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Default Re: Expansion tank requirements?

Quote:
Originally Posted by mgratton View Post
Below's comment copied from: https://www.flexconind.com/pdf/wh-whv_install.pdf

*Installation
1. This tank must be installed according to your local plumbing code. It should be
at least 18” from the cold water inlet to the water heater...*
It looks like an Amtrol and they do not have that requirement and the unit manufactured by Watts does not have that requirement either. They just need to be installed on the cold water side between the water heater and backflow device.




Stephen Stanczyk
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  #5  
Old 9/15/18, 1:28 PM
Joshua LeBeau's Avatar
Joshua LeBeau Joshua LeBeau is online now
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Default Re: Expansion tank requirements?

Thank you Stephen,
The tank is in the middle of the hot water exiting the boiler to the start of the hot water heat loop.




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