Doug Miller wrote:

In article , Speedy Jim wrote:

Adjust the FillTrol regulator to give the required system pressure
when Cold. This has nothing to do with the air pressure in the
bladder; this adjusts the pressure of city water connection to boiler.


Nope -- you didn't check the link he provided. The FillTrol is expansion tank
and pressure-regulating fill valve in one unit. The air pressure in the tank
bladder is what regulates the system pressure.


Yes, I did check the link.

The fill valve (regulator) is adjustable to set the boiler pressure.
The boiler needs more _water_. You won't get more
water by adding air to the exp tank end of things.