How do i raise and lower the pressure in my hot water base board heating boiler's pipes?

Question

I have a 1983 Boiler in my house. I tried bleeding the air from the system a few days ago. I did so till water came out and now i think it makes more water dripping noise in the pipes than before? I want to bleed more from the pipes but i'm not sure if i should add more water and if that will increase or decrees the water pressure to much. Right now the water pressure is at 23 psi and when it's on it's about 30 psi

Answer 1

The system is, or should be, self-regulating with regard to pressure and water supply. I don't think you can affect this. regardless of pressure, the system will circulate heated water by gravity and convection. There should be a circulator that forces the hot water through the system and returns the cooled water to the heater. If your system is that old, it could need flushing-something a heater tech should be called for- or the pipes might simply be clogged with corrosion or mineral deposits which would restrict the flow of water. The "dripping" noises might be from expansion and contraction of the the pipes as hot or cold water is introduced. What is your intent with regard to water pressure?