Hopefully someone here can help me do this without causing a disaster.
I need to bleed a zone of my hot water heat (hydronic?) system. It's a standard boiler, 3 zones, expansion tank, digital thermostats etc. Baseboard heaters without bleed valves.
I think the control valves are on the return side, how to be sure? The pump is on the same side of the boiler as the valves, and the expansion tank and city supply with pressure regulator is on the other.
There are taps for each zone, I need to bleed the top zone and the tap is before the control valve (assuming the valves are on the return side).
So I think, from reading stuff and watching some youtube, that I just need to attach a hose to the applicable zone tap and open it. The city supply should provide the pressure to run the water through the pipes. I don't think I need to manually open the control valve because the tap is before it. The pressure regulator was recently replaced so I believe it will work properly.
These seem like simple systems, I just want to make sure there isn't something I'm missing. I have put a decent sum of money into this system in the past few years getting it running well, and would rather not pay someone to do something simple like this. I also like understanding how my house works, I think it saves me money and keeps things running better.
So, if someone knows this stuff and can verify that I'm going about it the right way, I'd appreciate it!