Thermal expansion tank

[Blindog]

Must the TET go on the cold side of hot water tank. I have much more room on hot side.

 

[Reach4]

Typically it goes on the cold. I think it wold work fine on the hot. http://www.amtrol.com/media/documents/thermxtrol/MC4090_01_16_ThermXtrol_Brochure.pdf says it can take up to 200 degrees F. Also look at the sizing chart on that link. Therm-X-Trol is a top brand.

You could locate the unit elsewhere on the cold too. I don't think it needs to be downstream of the shutoff for the WH supply. Somebody may tell you otherwise. Let him cite.

 

[Sponsor]

 

[Jadnashua]

Potable ET usually (there are exceptions) not rated for use on hot water. You can find some that are. They do not last as long on hot water verses the cold side.

You do not want a shutoff valve between the WH and the ET. Close the valve, and it can't do its job, which sort of defeats the purpose of installing one in the first place.

 

[Blindog]

Another case of human not reading instructions. Without looking I plumbed the TET into the hot side. I just undid my bad and plumbed it into the cold side, no valve going to the tank. I bench tested and all checked good, tomorrow I'll attach the board to the wall an attempt to tie in all into the branches. I cut a saddle into a 2"x6" attached it to the plywood then pulled a Zip Tie around it the tank. Thanks for sticking with me.

 

[SteveW]

I am not sure what you mean about how you are supporting the expansion tank?
It's really important that it be well supported in the event that it gets waterlogged - which it eventually will. It will weigh a lot then.

 

[SteveW]

I would add that I would personally be concerned about using a zip tie to hold the expansion tank. I'd support it from below, or suspend it from above.