Bathroom Radiator

Anthony_10

Can someone explain to me why I need to bleed my bathroom radiator (the smallest one in the house located on the 2nd floor of a 2 story single home ) every week or two. I am not losing any pressure in my system ( guage states 15 psi.), though I need to bleed this radiator some times to get it to heat up ?? Can a bad expansion tank be causing this problem ?? Any help is appreciated.

Uni R_2

What kind of tank is it?

Which does your expansion tank most resemble?

A? http://images.oldhouseweb.com/stories/bitmaps/10463/expansiontank.jpg

B? http://www.aimradiantheating.com/store/media/ExpansionTank.jpg

ALH_4

...and

If your expansion tank is bad, you can be losing water at the relief valve when the system heats up and the automatic fresh water makeup valve is maintaining the pressure when the system cools down. Is there ever water dripping from the boiler relief valve? If there is, this is important to repair as soon as possible because it will eventually cause problems for the iron parts of the system with dissolved oxygen or minerals in the makeup water.

Unknown

is the wet

Is the wet rotor pump on return side of boiler with steel expanison tank? If so, there's ur problem...