I'm suddenly responsible for a steam boiler (gas) and I can't get a pro in for 4 weeks.
I suspect there has not been maintenance done for a few years.
I'm hoping in the meantime someone can explain what the parts are to me and tell me if I have any urgent problems?
The boiler in question is a Weil-McLain EG/PEG-35 series 4. I believe it was installed in 2005.
I have enclosed photos below with annotations.
My main concerns are:
1. What are all these valves for? (numbered in photos)
2. When I turn valve #1, a LOT of very dirty water comes out. Am I draining the boiler, or draining the pipes/radiators when I do this? If I drain enough, the low water alert light comes on, so I know that part works at least.
3. Valve #2 in first photo will not open, totally corroded. I'm not inclined to force it. What's this for? Will it need to be replaced? How urgently?
4. Valve #3 will open, but nothing comes out. What is supposed to?
5. Valve #4 (bottom of sight glass) is stuck. Knob won't turn. I don't know if it's open or closed. Valve #5 (top of sight glass) I can open, but when I do, tons of sediment pours into the sight glass. Should I keep it open or closed?
6. Sight glass is full of water even if low water light is on. I assume because the bottom valve is clogged? Possible for tech to clean or does it need replaced?
7. I have heat! But it's a bit noisy especially when starting up. Hissing, banging. Also it seems to turn on and off quite frequently. Normal?
The fill valve is manual and is in the last photo (6). I filled it up until the low water light when off and then some but I have no way of telling how much to do, since the sight glass is clogged, right? I just have to guess?
Any help for this steam newbie is much appreciated. Or if the advice is "find a professional ASAP" that's good too - I can keep calling around.