I have a 3week old 66 gallon electric tank installed and at the time the guys didn't know there was a check valve in the whole house filter. I now need to install a expansion tank. I put a gauge on the bottom heater drain valve last night and it went to 115 lbs.The water heater has the cold inlet entering on the bottom and the top cold feed capped off of course.Would there be a problem with installing the expansion tank to the top of the heater in the capped off line?.I think it should work but would like opinions on this.
Thanks.
Thanks.
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