[pinballlooking]

Here is a picture of the small expansion tank, a check valve and a recirculation pump.
It looks like an erector set now.

I also put in condensation drain the top part of the condensation drain I put in clear tube so I will always know if it is draining.

In another blog I saw where someone else put in a flow switch so whenever someone turned on the hot water they would kick off the recirculation pump. So if they went into the bathroom the would turn on the hot water for a couple seconds then when they came back the water would be hot. They also used a aquastat to save energy. (I like my setup better but his setup if cheaper to install)

I changed the ½ bath to run the pump 30 seconds because it is close to the tank. This new tank is really working well it keeps the water a very constant temp unlike my old tankless water heater.

We keep our water pressure pretty high so that is why I added the small expansion tank.