My install is about done (with a bit of elec to go). I am now preparing to fill er up. I have:
Weil CGa boiler
Taco 4900 Series Air Seperator on supply side
Taco 1/8" Hy-Vent on boiler
Boiler drain valve
Watts ET Expansion Tank
Taco Cartridge Style Pressure Reducing Valve (3350-T2)
My stem is an old converted steam/gravity system and I have no idea how much water it takes.
? What is the best way to fill the system? Just turn on the water and let the 3350 fill until ~12psi is reached?