Hot Water Heating System.
I've set the stat to 90 degrees - water got hot, pump has been running for about a 1 hr so far.
When I bleed the lower basement radiators, I am getting water.
No water on the 1st and 2nd level when I attempt to bleed air.
Lower basement baseboard are not warm yet.
When I feel the outgoing / return pipes off the unit and the pump...it's all nice and toasty.