Well I visited the TT30 and have the following to offer:
Amongst my fears about a built in flow center was space for repairs/replacement and I found it adequate.
They've got Doc's dial in Delta T to determine pump speed.
They have on board diagnostics that give you a snap shot of temps and pressures when fault occured.
Pricey.
Kind of cool.
My customers are not lab rats so I wanna see them a few more months in the field.
Worst problem is my loop contractor is in charge of providing my flow centers and now that cost is transferred to me

